staging.inyokaproject.org

Hallo zusammen,

ich habe erst seit kurzem Ubuntu 14.04 installiert (Dual Boot neben Windows 8.1), bin also ganz neu dabei.

Mein Wlan Stick funktioniert einwandfrei unter Win 7 und 8.1 (Fritz Wlan Stick N zusammen mit dem Fritz Wlan Modem 7312), aber unter Ubuntu wurde er zwar automatisch bei der Installation erkannt; es kommt allerdings es in unterschiedlichen zeitlichen Abständen immer wieder zu Verbindungsabbrüchen. Im Network-Manager taucht die Verbindung dann gar nicht mehr auf. Es besteht keine LAN-Verbindung; es ist auch keine weitere WLAN-Karte im Rechner selbst verbaut. Der Stick ist also die einige Möglichkeit, ins Netz zu gelangen.

Habe etwas recherchiert und feststellen müssen, dass es vielen mit diesem Stick so geht. Meine Frage wäre daher: Ich suche für den Anfang eine möglichst einfache Lösung ohne viel zu konfigurieren. Wäre das mit diesem Stick zu machen? Sonst würde ich wahrscheinlich lieber in die Abteilung Kaufberatung umziehen?

Lieben Gruß

Hallo,
es gibt nicht nur den einen Fritz-Stick-N → WLAN/Karten/AVM

Info zur Hardware, den verwendeten USB-Anschlüssen und Ursachen nach Verbindungsabbruch aus dem Syslog (→ Logdateien). Verwende dazu ein Terminal:

lsmod
lsusb
lsusb -t
sudo  lsusb -vv | egrep -iw 'id|maxpower'
egrep -i 'net|wlan|reason' /var/log/syslog 

Weitere Hintergrundinfo auch in Welche Angaben zum System sind für ein neues Thema nötig?

Guten Morgen,

vielen Dank für die schnelle Antwort. Hier die Angaben - zuerst die, nach denen du im Post gefragt hattest, danach die aus der allgemeinen Info. Zu Beginn der Abfragen bestand noch eine WLAN-Verbindung, die dann aber nach einer Weile wieder zusammenbrach. Ich hoffe, es ist vollständig. Danke nochmal für die Hilfe. Besten Gruß Jenny

lsmod

Module                  Size  Used by 
ctr                    16384  1 
ccm                    20480  1 
bnep                   20480  2 
rfcomm                 69632  0 
bluetooth             491520  10 bnep,rfcomm 
arc4                   16384  2 
intel_rapl             20480  0 
iosf_mbi               16384  1 intel_rapl 
carl9170               94208  0 
ath                    32768  1 carl9170 
x86_pkg_temp_thermal    16384  0 
mac80211              708608  1 carl9170 
intel_powerclamp       20480  0 
snd_hda_codec_hdmi     53248  1 
snd_hda_codec_realtek    81920  1 
snd_hda_codec_generic    69632  1 snd_hda_codec_realtek 
coretemp               16384  0 
snd_hda_intel          36864  6 snd_hda_codec_hdmi 
snd_hda_controller     32768  1 snd_hda_intel 
kvm_intel             151552  0 
cfg80211              524288  3 ath,mac80211,carl9170 
snd_hda_codec         143360  5 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_intel,snd_hda_controller 
kvm                   479232  1 kvm_intel 
snd_hwdep              20480  1 snd_hda_codec 
snd_pcm               106496  4 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_controller 
crct10dif_pclmul       16384  0 
snd_seq_midi           16384  0 
snd_seq_midi_event     16384  1 snd_seq_midi 
crc32_pclmul           16384  0 
snd_rawmidi            32768  1 snd_seq_midi 
snd_seq                65536  2 snd_seq_midi_event,snd_seq_midi 
aesni_intel           172032  2 
i915                 1048576  4 
snd_seq_device         16384  3 snd_seq,snd_rawmidi,snd_seq_midi 
aes_x86_64             20480  1 aesni_intel 
snd_timer              32768  2 snd_pcm,snd_seq 
lrw                    16384  1 aesni_intel 
gf128mul               16384  1 lrw 
glue_helper            16384  1 aesni_intel 
ablk_helper            16384  1 aesni_intel 
cryptd                 20480  2 aesni_intel,ablk_helper 
snd                    86016  21 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel,snd_seq_device 
drm_kms_helper        126976  1 i915 
mxm_wmi                16384  0 
soundcore              16384  2 snd,snd_hda_codec 
drm                   344064  5 i915,drm_kms_helper 
shpchp                 40960  0 
serio_raw              16384  0 
ppdev                  20480  0 
parport_pc             32768  1 
i2c_algo_bit           16384  1 i915 
mei_me                 20480  0 
video                  20480  1 i915 
acpi_pad               20480  0 
lp                     20480  0 
intel_smartconnect     16384  0 
wmi                    20480  1 mxm_wmi 
mei                    90112  1 mei_me 
parport                45056  3 lp,ppdev,parport_pc 
tpm_infineon           20480  0 
lpc_ich                24576  0 
8250_fintek            16384  0 
mac_hid                16384  0 
hid_generic            16384  0 
usbhid                 53248  0 
hid                   110592  2 hid_generic,usbhid 
uas                    24576  0 
usb_storage            69632  2 uas 
ahci                   36864  2 
r8169                  81920  0 
libahci                32768  1 ahci 
mii                    16384  1 r8169 

lsusb

Bus 004 Device 002: ID 8087:8001 Intel Corp. 
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub 
Bus 003 Device 002: ID 8087:8009 Intel Corp. 
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub 
Bus 002 Device 002: ID 0480:0101 Toshiba America Info. Systems, Inc. 
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub 
Bus 001 Device 004: ID 093a:2510 Pixart Imaging, Inc. Optical Mouse 
Bus 001 Device 003: ID 048d:1336 Integrated Technology Express, Inc. SD/MMC Cardreader 
Bus 001 Device 006: ID 057c:8401 AVM GmbH Fritz!WLAN N [Atheros AR9001U] 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub 

lsusb -t

/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M 
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/8p, 480M 
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M 
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M 
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 5000M 
    |__ Port 5: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 5000M 
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/14p, 480M 
    |__ Port 6: Dev 6, If 0, Class=Vendor Specific Class, Driver=carl9170, 480M 
    |__ Port 8: Dev 3, If 0, Class=Mass Storage, Driver=usb-storage, 480M 
    |__ Port 9: Dev 4, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M 

sudo lsusb -vv | egrep -iw 'id|maxpower'

Bus 004 Device 002: ID 8087:8001 Intel Corp. 
    MaxPower                0mA 
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub 
    MaxPower                0mA 
Bus 003 Device 002: ID 8087:8009 Intel Corp. 
    MaxPower                0mA 
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub 
    MaxPower                0mA 
Bus 002 Device 002: ID 0480:0101 Toshiba America Info. Systems, Inc. 
    MaxPower              224mA 
  Container ID Device Capability: 
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub 
    MaxPower                0mA 
Bus 001 Device 004: ID 093a:2510 Pixart Imaging, Inc. Optical Mouse 
    MaxPower              100mA 
Bus 001 Device 003: ID 048d:1336 Integrated Technology Express, Inc. SD/MMC Cardreader 
    MaxPower              100mA 
Bus 001 Device 006: ID 057c:8401 AVM GmbH Fritz!WLAN N [Atheros AR9001U] 
    MaxPower              500mA 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub 
    MaxPower                0mA 

egrep -i 'net|wlan|reason' /var/log/syslog

Jan  9 07:52:14 Christian wpa_supplicant[1094]: message repeated 5 times: [ wlan0: CTRL-EVENT-SCAN-STARTED ] 
Jan  9 07:52:29 Christian NetworkManager[861]: <warn> Couldn't retrieve BSSID properties: failed to parse RSN IE. 
Jan  9 07:52:34 Christian wpa_supplicant[1094]: wlan0: CTRL-EVENT-SCAN-STARTED 
Jan  9 07:52:58 Christian wpa_supplicant[1094]: wlan0: WPA: Group rekeying completed with 24:65:11:80:35:f0 [GTK=TKIP] 
Jan  9 07:54:14 Christian wpa_supplicant[1094]: wlan0: CTRL-EVENT-SCAN-STARTED 
Jan  9 07:56:14 Christian wpa_supplicant[1094]: wlan0: CTRL-EVENT-SCAN-STARTED 
Jan  9 08:02:14 Christian wpa_supplicant[1094]: message repeated 3 times: [ wlan0: CTRL-EVENT-SCAN-STARTED ] 
Jan  9 08:02:58 Christian wpa_supplicant[1094]: wlan0: WPA: Group rekeying completed with 24:65:11:80:35:f0 [GTK=TKIP] 
Jan  9 08:04:14 Christian wpa_supplicant[1094]: wlan0: CTRL-EVENT-SCAN-STARTED 
Jan  9 08:06:14 Christian wpa_supplicant[1094]: wlan0: CTRL-EVENT-SCAN-STARTED 
Jan  9 08:06:23 Christian wpa_supplicant[1094]: wlan0: CTRL-EVENT-DISCONNECTED bssid=24:65:11:80:35:f0 reason=3 locally_generated=1 
Jan  9 07:54:29 Christian NetworkManager[861]: message repeated 2 times: [ <warn> Couldn't retrieve BSSID properties: failed to parse RSN IE.] 
Jan  9 08:06:23 Christian NetworkManager[861]: <warn> Connection disconnected (reason -3) 
Jan  9 08:06:23 Christian kernel: [ 1684.143714] wlan0: deauthenticating from 24:65:11:80:35:f0 by local choice (Reason: 3=DEAUTH_LEAVING) 
Jan  9 08:06:23 Christian avahi-daemon[795]: Interface wlan0.IPv6 no longer relevant for mDNS. 
Jan  9 08:06:23 Christian avahi-daemon[795]: Leaving mDNS multicast group on interface wlan0.IPv6 with address fe80::be05:43ff:fe0d:a764. 
Jan  9 08:06:23 Christian dhclient: receive_packet failed on wlan0: Network is down 
Jan  9 08:06:23 Christian avahi-daemon[795]: Interface wlan0.IPv4 no longer relevant for mDNS. 
Jan  9 08:06:23 Christian avahi-daemon[795]: Leaving mDNS multicast group on interface wlan0.IPv4 with address 192.168.178.34. 
Jan  9 08:06:23 Christian avahi-daemon[795]: Withdrawing address record for fe80::be05:43ff:fe0d:a764 on wlan0. 
Jan  9 08:06:23 Christian avahi-daemon[795]: Withdrawing address record for 192.168.178.34 on wlan0. 
Jan  9 08:06:23 Christian avahi-daemon[795]: Withdrawing workstation service for wlan0. 
Jan  9 08:06:23 Christian NetworkManager[861]: <info> (wlan0): device state change: activated -> unmanaged (reason 'removed') [100 10 36] 
Jan  9 08:06:23 Christian NetworkManager[861]: <info> (wlan0): deactivating device (reason 'removed') [36] 
Jan  9 08:06:23 Christian ModemManager[714]: <info>  (net/wlan0): released by modem /sys/devices/pci0000:00/0000:00:14.0/usb1/1-6 
Jan  9 08:06:23 Christian NetworkManager[861]: <info> (wlan0): canceled DHCP transaction, DHCP client pid 2663 
Jan  9 08:06:23 Christian NetworkManager[861]: <warn> sysctl: failed to open '/proc/sys/net/ipv6/conf/wlan0/accept_ra': (2) Datei oder Verzeichnis nicht gefunden 
Jan  9 08:06:23 Christian NetworkManager[861]: <warn> sysctl: failed to open '/proc/sys/net/ipv6/conf/wlan0/use_tempaddr': (2) Datei oder Verzeichnis nicht gefunden 
Jan  9 08:06:23 Christian NetworkManager[861]: <warn> (5) failed to find interface name for index 
Jan  9 08:06:23 Christian NetworkManager[861]: (nm-system.c:766):nm_system_iface_get_flags: runtime check failed: (iface != NULL) 
Jan  9 08:06:23 Christian NetworkManager[861]: <error> [1452323183.482013] [nm-system.c:768] nm_system_iface_get_flags(): (unknown): failed to get interface link object 
Jan  9 08:06:23 Christian NetworkManager[861]: <warn> (5) failed to find interface name for index 
Jan  9 08:06:23 Christian NetworkManager[861]: (nm-system.c:766):nm_system_iface_get_flags: runtime check failed: (iface != NULL) 
Jan  9 08:06:23 Christian NetworkManager[861]: <error> [1452323183.482075] [nm-system.c:768] nm_system_iface_get_flags(): (unknown): failed to get interface link object 
Jan  9 08:06:23 Christian NetworkManager[861]: <info> (wlan0): bringing up device. 
Jan  9 08:06:23 Christian NetworkManager[861]: <warn> (5) failed to find interface name for index 
Jan  9 08:06:23 Christian NetworkManager[861]: nm_system_iface_flush_routes: assertion 'iface != NULL' failed 
Jan  9 08:06:23 Christian NetworkManager[861]: <warn> (5) failed to find interface name for index 
Jan  9 08:06:23 Christian NetworkManager[861]: <warn> DNS: plugin dnsmasq update failed 
Jan  9 08:06:23 Christian NetworkManager[861]: <info> Removing DNS information from /sbin/resolvconf 
Jan  9 08:06:23 Christian NetworkManager[861]: <info> (wlan0): cleaning up... 
Jan  9 08:06:23 Christian NetworkManager[861]: <warn> (5) failed to find interface name for index 
Jan  9 08:06:23 Christian NetworkManager[861]: (nm-system.c:766):nm_system_iface_get_flags: runtime check failed: (iface != NULL) 
Jan  9 08:06:23 Christian NetworkManager[861]: <error> [1452323183.495058] [nm-system.c:768] nm_system_iface_get_flags(): (unknown): failed to get interface link object 
Jan  9 08:06:23 Christian NetworkManager[861]: <info> Unmanaged Device found; state CONNECTED forced. (see http://bugs.launchpad.net/bugs/191889) 
Jan  9 08:06:23 Christian NetworkManager[861]:    SCPlugin-Ifupdown: devices removed (path: /sys/devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6:1.0/net/wlan0, iface: wlan0) 
Jan  9 08:06:23 Christian NetworkManager[861]: <info> radio killswitch /sys/devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6:1.0/ieee80211/phy2/rfkill2 disappeared 
Jan  9 08:06:24 Christian NetworkManager[861]:    SCPlugin-Ifupdown: devices added (path: /sys/devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6:1.0/net/wlan0, iface: wlan0) 
Jan  9 08:06:24 Christian NetworkManager[861]:    SCPlugin-Ifupdown: device added (path: /sys/devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6:1.0/net/wlan0, iface: wlan0): no ifupdown configuration found. 
Jan  9 08:06:24 Christian NetworkManager[861]: <info> (wlan0): using nl80211 for WiFi device control 
Jan  9 08:06:24 Christian NetworkManager[861]: <info> (wlan0): driver supports Access Point (AP) mode 
Jan  9 08:06:24 Christian NetworkManager[861]: <info> (wlan0): new 802.11 WiFi device (driver: 'carl9170' ifindex: 6) 
Jan  9 08:06:24 Christian NetworkManager[861]: <info> (wlan0): exported as /org/freedesktop/NetworkManager/Devices/4 
Jan  9 08:06:24 Christian NetworkManager[861]: <info> (wlan0): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2] 
Jan  9 08:06:24 Christian NetworkManager[861]: <info> (wlan0): bringing up device. 
Jan  9 08:06:24 Christian NetworkManager[861]: <info> (wlan0): preparing device. 
Jan  9 08:06:24 Christian NetworkManager[861]: <info> (wlan0): deactivating device (reason 'managed') [2] 
Jan  9 08:06:24 Christian NetworkManager[861]: <info> NetworkManager state is now DISCONNECTED 
Jan  9 08:06:24 Christian NetworkManager[861]: <info> rfkill3: found WiFi radio killswitch (at /sys/devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6:1.0/ieee80211/phy3/rfkill3) (driver carl9170) 
Jan  9 08:06:24 Christian kernel: [ 1685.536501] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready 
Jan  9 08:06:24 Christian NetworkManager[861]: <info> (wlan0) supports 4 scan SSIDs 
Jan  9 08:06:24 Christian NetworkManager[861]: <info> (wlan0): supplicant interface state: starting -> ready 
Jan  9 08:06:24 Christian NetworkManager[861]: <info> (wlan0): device state change: unavailable -> disconnected (reason 'supplicant-available') [20 30 42] 
Jan  9 08:06:24 Christian NetworkManager[861]: <warn> Trying to remove a non-existant call id. 
Jan  9 08:06:24 Christian wpa_supplicant[1094]: wlan0: CTRL-EVENT-SCAN-STARTED 
Jan  9 08:06:24 Christian NetworkManager[861]: <info> (wlan0): supplicant interface state: ready -> disconnected 
Jan  9 08:06:24 Christian NetworkManager[861]: <info> (wlan0) supports 4 scan SSIDs 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> (wlan0): supplicant interface state: disconnected -> inactive 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> Auto-activating connection 'FRITZ!Box 7312'. 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> Activation (wlan0) starting connection 'FRITZ!Box 7312' 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> (wlan0): device state change: disconnected -> prepare (reason 'none') [30 40 0] 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> NetworkManager state is now CONNECTING 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) scheduled... 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) started... 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) scheduled... 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) complete. 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) starting... 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> (wlan0): device state change: prepare -> config (reason 'none') [40 50 0] 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> Activation (wlan0/wireless): access point 'FRITZ!Box 7312' has security, but secrets are required. 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> (wlan0): device state change: config -> need-auth (reason 'none') [50 60 0] 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) complete. 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) scheduled... 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) started... 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> (wlan0): device state change: need-auth -> prepare (reason 'none') [60 40 0] 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) scheduled... 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) complete. 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) starting... 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> (wlan0): device state change: prepare -> config (reason 'none') [40 50 0] 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> Activation (wlan0/wireless): connection 'FRITZ!Box 7312' has security, and secrets exist.  No new secrets needed. 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> Config: added 'ssid' value 'FRITZ!Box 7312' 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> Config: added 'scan_ssid' value '1' 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> Config: added 'key_mgmt' value 'WPA-PSK' 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> Config: added 'auth_alg' value 'OPEN' 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> Config: added 'psk' value '<omitted>' 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) complete. 
Jan  9 08:06:30 Christian NetworkManager[861]: <info> Config: set interface ap_scan to 1 
Jan  9 08:06:30 Christian wpa_supplicant[1094]: wlan0: CTRL-EVENT-SCAN-STARTED 
Jan  9 08:06:35 Christian wpa_supplicant[1094]: wlan0: SME: Trying to authenticate with 24:65:11:80:35:f0 (SSID='FRITZ!Box 7312' freq=2412 MHz) 
Jan  9 08:06:35 Christian kernel: [ 1696.525549] wlan0: authenticate with 24:65:11:80:35:f0 
Jan  9 08:06:35 Christian NetworkManager[861]: <info> (wlan0): supplicant interface state: inactive -> authenticating 
Jan  9 08:06:35 Christian kernel: [ 1696.602029] wlan0: send auth to 24:65:11:80:35:f0 (try 1/3) 
Jan  9 08:06:35 Christian wpa_supplicant[1094]: wlan0: Trying to associate with 24:65:11:80:35:f0 (SSID='FRITZ!Box 7312' freq=2412 MHz) 
Jan  9 08:06:35 Christian kernel: [ 1696.604967] wlan0: authenticated 
Jan  9 08:06:35 Christian kernel: [ 1696.607389] wlan0: associate with 24:65:11:80:35:f0 (try 1/3) 
Jan  9 08:06:35 Christian NetworkManager[861]: <info> (wlan0): supplicant interface state: authenticating -> associating 
Jan  9 08:06:35 Christian kernel: [ 1696.617873] wlan0: RX AssocResp from 24:65:11:80:35:f0 (capab=0x31 status=0 aid=1) 
Jan  9 08:06:35 Christian kernel: [ 1696.621349] wlan0: associated 
Jan  9 08:06:35 Christian kernel: [ 1696.621366] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready 
Jan  9 08:06:35 Christian wpa_supplicant[1094]: wlan0: Associated with 24:65:11:80:35:f0 
Jan  9 08:06:35 Christian NetworkManager[861]: <info> (wlan0): supplicant interface state: associating -> 4-way handshake 
Jan  9 08:06:35 Christian wpa_supplicant[1094]: wlan0: WPA: Key negotiation completed with 24:65:11:80:35:f0 [PTK=CCMP GTK=TKIP] 
Jan  9 08:06:35 Christian wpa_supplicant[1094]: wlan0: CTRL-EVENT-CONNECTED - Connection to 24:65:11:80:35:f0 completed [id=0 id_str=] 
Jan  9 08:06:35 Christian wpa_supplicant[1094]: wlan0: SME: Trying to authenticate with 24:65:11:80:35:f0 (SSID='FRITZ!Box 7312' freq=2412 MHz) 
Jan  9 08:06:35 Christian kernel: [ 1696.630758] wlan0: deauthenticating from 24:65:11:80:35:f0 by local choice (Reason: 2=PREV_AUTH_NOT_VALID) 
Jan  9 08:06:35 Christian kernel: [ 1696.708462] wlan0: authenticate with 24:65:11:80:35:f0 
Jan  9 08:06:35 Christian wpa_supplicant[1094]: wlan0: CTRL-EVENT-DISCONNECTED bssid=24:65:11:80:35:f0 reason=2 locally_generated=1 
Jan  9 08:06:35 Christian NetworkManager[861]: <info> (wlan0): supplicant interface state: 4-way handshake -> authenticating 
Jan  9 08:06:35 Christian NetworkManager[861]: <warn> Connection disconnected (reason -2) 
Jan  9 08:06:35 Christian kernel: [ 1696.785602] wlan0: send auth to 24:65:11:80:35:f0 (try 1/3) 
Jan  9 08:06:35 Christian wpa_supplicant[1094]: wlan0: Trying to associate with 24:65:11:80:35:f0 (SSID='FRITZ!Box 7312' freq=2412 MHz) 
Jan  9 08:06:35 Christian kernel: [ 1696.788824] wlan0: authenticated 
Jan  9 08:06:35 Christian kernel: [ 1696.791188] wlan0: associate with 24:65:11:80:35:f0 (try 1/3) 
Jan  9 08:06:35 Christian NetworkManager[861]: <info> (wlan0): supplicant interface state: authenticating -> associating 
Jan  9 08:06:35 Christian kernel: [ 1696.798823] wlan0: RX AssocResp from 24:65:11:80:35:f0 (capab=0x31 status=0 aid=1) 
Jan  9 08:06:35 Christian wpa_supplicant[1094]: wlan0: Associated with 24:65:11:80:35:f0 
Jan  9 08:06:35 Christian kernel: [ 1696.802560] wlan0: associated 
Jan  9 08:06:35 Christian NetworkManager[861]: <info> (wlan0): supplicant interface state: associating -> 4-way handshake 
Jan  9 08:06:35 Christian wpa_supplicant[1094]: wlan0: WPA: Key negotiation completed with 24:65:11:80:35:f0 [PTK=CCMP GTK=TKIP] 
Jan  9 08:06:35 Christian wpa_supplicant[1094]: wlan0: CTRL-EVENT-CONNECTED - Connection to 24:65:11:80:35:f0 completed [id=0 id_str=] 
Jan  9 08:06:35 Christian NetworkManager[861]: <info> (wlan0): supplicant interface state: 4-way handshake -> completed 
Jan  9 08:06:35 Christian NetworkManager[861]: <info> Activation (wlan0/wireless) Stage 2 of 5 (Device Configure) successful.  Connected to wireless network 'FRITZ!Box 7312'. 
Jan  9 08:06:35 Christian NetworkManager[861]: <info> Activation (wlan0) Stage 3 of 5 (IP Configure Start) scheduled. 
Jan  9 08:06:35 Christian NetworkManager[861]: <info> Activation (wlan0) Stage 3 of 5 (IP Configure Start) started... 
Jan  9 08:06:35 Christian NetworkManager[861]: <info> (wlan0): device state change: config -> ip-config (reason 'none') [50 70 0] 
Jan  9 08:06:35 Christian NetworkManager[861]: <info> Activation (wlan0) Beginning DHCPv4 transaction (timeout in 45 seconds) 
Jan  9 08:06:35 Christian NetworkManager[861]: <info> dhclient started with pid 3342 
Jan  9 08:06:35 Christian NetworkManager[861]: <info> Activation (wlan0) Beginning IP6 addrconf. 
Jan  9 08:06:35 Christian NetworkManager[861]: <info> Activation (wlan0) Stage 3 of 5 (IP Configure Start) complete. 
Jan  9 08:06:35 Christian dhclient: Internet Systems Consortium DHCP Client 4.2.4 
Jan  9 08:06:35 Christian dhclient: Copyright 2004-2012 Internet Systems Consortium. 
Jan  9 08:06:35 Christian NetworkManager[861]: <info> (wlan0): DHCPv4 state changed nbi -> preinit 
Jan  9 08:06:35 Christian dhclient: Listening on LPF/wlan0/bc:05:43:0d:a7:64 
Jan  9 08:06:35 Christian dhclient: Sending on   LPF/wlan0/bc:05:43:0d:a7:64 
Jan  9 08:06:35 Christian dhclient: DHCPREQUEST of 192.168.178.34 on wlan0 to 255.255.255.255 port 67 (xid=0x4f3db43) 
Jan  9 08:06:35 Christian NetworkManager[861]: <info> (wlan0): DHCPv4 state changed preinit -> reboot 
Jan  9 08:06:35 Christian NetworkManager[861]: <info>   address 192.168.178.34 
Jan  9 08:06:35 Christian NetworkManager[861]: <info>   prefix 24 (255.255.255.0) 
Jan  9 08:06:35 Christian NetworkManager[861]: <info>   gateway 192.168.178.1 
Jan  9 08:06:35 Christian NetworkManager[861]: <info>   nameserver '192.168.178.1' 
Jan  9 08:06:35 Christian NetworkManager[861]: <info>   domain name 'fritz.box' 
Jan  9 08:06:35 Christian NetworkManager[861]: <info> Activation (wlan0) Stage 5 of 5 (IPv4 Configure Commit) scheduled... 
Jan  9 08:06:35 Christian NetworkManager[861]: <info> Activation (wlan0) Stage 5 of 5 (IPv4 Commit) started... 
Jan  9 08:06:35 Christian avahi-daemon[795]: Joining mDNS multicast group on interface wlan0.IPv4 with address 192.168.178.34. 
Jan  9 08:06:35 Christian avahi-daemon[795]: New relevant interface wlan0.IPv4 for mDNS. 
Jan  9 08:06:35 Christian avahi-daemon[795]: Registering new address record for 192.168.178.34 on wlan0.IPv4. 
Jan  9 08:06:36 Christian NetworkManager[861]: <info> (wlan0): device state change: ip-config -> secondaries (reason 'none') [70 90 0] 
Jan  9 08:06:36 Christian NetworkManager[861]: <info> Activation (wlan0) Stage 5 of 5 (IPv4 Commit) complete. 
Jan  9 08:06:36 Christian NetworkManager[861]: <info> (wlan0): device state change: secondaries -> activated (reason 'none') [90 100 0] 
Jan  9 08:06:37 Christian NetworkManager[861]: <info> NetworkManager state is now CONNECTED_GLOBAL 
Jan  9 08:06:37 Christian NetworkManager[861]: <info> Policy set 'FRITZ!Box 7312' (wlan0) as default for IPv4 routing and DNS. 
Jan  9 08:06:37 Christian NetworkManager[861]: <info> Writing DNS information to /sbin/resolvconf 
Jan  9 08:06:37 Christian NetworkManager[861]: <info> Activation (wlan0) successful, device activated. 
Jan  9 08:06:37 Christian avahi-daemon[795]: Joining mDNS multicast group on interface wlan0.IPv6 with address fe80::be05:43ff:fe0d:a764. 
Jan  9 08:06:37 Christian avahi-daemon[795]: New relevant interface wlan0.IPv6 for mDNS. 
Jan  9 08:06:37 Christian avahi-daemon[795]: Registering new address record for fe80::be05:43ff:fe0d:a764 on wlan0.*. 
Jan  9 08:06:47 Christian wpa_supplicant[1094]: wlan0: CTRL-EVENT-SCAN-STARTED 
Jan  9 08:06:56 Christian NetworkManager[861]: <info> (wlan0): IP6 addrconf timed out or failed. 
Jan  9 08:06:56 Christian NetworkManager[861]: <info> Activation (wlan0) Stage 4 of 5 (IPv6 Configure Timeout) scheduled... 
Jan  9 08:06:56 Christian NetworkManager[861]: <info> Activation (wlan0) Stage 4 of 5 (IPv6 Configure Timeout) started... 
Jan  9 08:06:56 Christian NetworkManager[861]: <info> Activation (wlan0) Stage 4 of 5 (IPv6 Configure Timeout) complete. 
Jan  9 08:07:04 Christian kernel: [ 1725.282813] net_ratelimit: 25 callbacks suppressed 
Jan  9 08:11:39 Christian wpa_supplicant[1094]: message repeated 5 times: [ wlan0: CTRL-EVENT-SCAN-STARTED ] 
Jan  9 08:12:58 Christian wpa_supplicant[1094]: wlan0: WPA: Group rekeying completed with 24:65:11:80:35:f0 [GTK=TKIP] 
Jan  9 08:13:39 Christian wpa_supplicant[1094]: wlan0: CTRL-EVENT-SCAN-STARTED 
Jan  9 08:19:39 Christian wpa_supplicant[1094]: message repeated 3 times: [ wlan0: CTRL-EVENT-SCAN-STARTED ] 
Jan  9 08:20:29 Christian wpa_supplicant[1094]: wlan0: CTRL-EVENT-DISCONNECTED bssid=24:65:11:80:35:f0 reason=3 locally_generated=1 
Jan  9 08:20:29 Christian NetworkManager[861]: <warn> Connection disconnected (reason -3) 
Jan  9 08:20:29 Christian kernel: [ 2529.359542] wlan0: deauthenticating from 24:65:11:80:35:f0 by local choice (Reason: 3=DEAUTH_LEAVING) 
Jan  9 08:20:29 Christian avahi-daemon[795]: Interface wlan0.IPv6 no longer relevant for mDNS. 
Jan  9 08:20:29 Christian avahi-daemon[795]: Leaving mDNS multicast group on interface wlan0.IPv6 with address fe80::be05:43ff:fe0d:a764. 
Jan  9 08:20:29 Christian dhclient: receive_packet failed on wlan0: Network is down 
Jan  9 08:20:29 Christian avahi-daemon[795]: Interface wlan0.IPv4 no longer relevant for mDNS. 
Jan  9 08:20:29 Christian avahi-daemon[795]: Leaving mDNS multicast group on interface wlan0.IPv4 with address 192.168.178.34. 
Jan  9 08:20:29 Christian avahi-daemon[795]: Withdrawing address record for fe80::be05:43ff:fe0d:a764 on wlan0. 
Jan  9 08:20:29 Christian avahi-daemon[795]: Withdrawing address record for 192.168.178.34 on wlan0. 
Jan  9 08:20:29 Christian avahi-daemon[795]: Withdrawing workstation service for wlan0. 
Jan  9 08:20:29 Christian NetworkManager[861]: <info> (wlan0): device state change: activated -> unmanaged (reason 'removed') [100 10 36] 
Jan  9 08:20:29 Christian NetworkManager[861]: <info> (wlan0): deactivating device (reason 'removed') [36] 
Jan  9 08:20:29 Christian NetworkManager[861]: <info> (wlan0): canceled DHCP transaction, DHCP client pid 3342 
Jan  9 08:20:29 Christian NetworkManager[861]: <warn> sysctl: failed to open '/proc/sys/net/ipv6/conf/wlan0/accept_ra': (2) Datei oder Verzeichnis nicht gefunden 
Jan  9 08:20:29 Christian NetworkManager[861]: <warn> sysctl: failed to open '/proc/sys/net/ipv6/conf/wlan0/use_tempaddr': (2) Datei oder Verzeichnis nicht gefunden 
Jan  9 08:20:29 Christian NetworkManager[861]: <warn> (6) failed to find interface name for index 
Jan  9 08:20:29 Christian NetworkManager[861]: (nm-system.c:766):nm_system_iface_get_flags: runtime check failed: (iface != NULL) 
Jan  9 08:20:29 Christian NetworkManager[861]: <error> [1452324029.512018] [nm-system.c:768] nm_system_iface_get_flags(): (unknown): failed to get interface link object 
Jan  9 08:20:29 Christian NetworkManager[861]: <warn> (6) failed to find interface name for index 
Jan  9 08:20:29 Christian NetworkManager[861]: (nm-system.c:766):nm_system_iface_get_flags: runtime check failed: (iface != NULL) 
Jan  9 08:20:29 Christian NetworkManager[861]: <error> [1452324029.512057] [nm-system.c:768] nm_system_iface_get_flags(): (unknown): failed to get interface link object 
Jan  9 08:20:29 Christian NetworkManager[861]: <info> (wlan0): bringing up device. 
Jan  9 08:20:29 Christian NetworkManager[861]: <warn> (6) failed to find interface name for index 
Jan  9 08:20:29 Christian NetworkManager[861]: nm_system_iface_flush_routes: assertion 'iface != NULL' failed 
Jan  9 08:20:29 Christian NetworkManager[861]: <warn> (6) failed to find interface name for index 
Jan  9 08:20:29 Christian NetworkManager[861]: <warn> DNS: plugin dnsmasq update failed 
Jan  9 08:20:29 Christian NetworkManager[861]: <info> Removing DNS information from /sbin/resolvconf 
Jan  9 08:20:29 Christian NetworkManager[861]: <info> (wlan0): cleaning up... 
Jan  9 08:20:29 Christian NetworkManager[861]: <warn> (6) failed to find interface name for index 
Jan  9 08:20:29 Christian NetworkManager[861]: (nm-system.c:766):nm_system_iface_get_flags: runtime check failed: (iface != NULL) 
Jan  9 08:20:29 Christian NetworkManager[861]: <error> [1452324029.523965] [nm-system.c:768] nm_system_iface_get_flags(): (unknown): failed to get interface link object 
Jan  9 08:20:29 Christian NetworkManager[861]: <info> Unmanaged Device found; state CONNECTED forced. (see http://bugs.launchpad.net/bugs/191889) 
Jan  9 08:20:29 Christian NetworkManager[861]:    SCPlugin-Ifupdown: devices removed (path: /sys/devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6:1.0/net/wlan0, iface: wlan0) 
Jan  9 08:20:29 Christian NetworkManager[861]: <info> radio killswitch /sys/devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6:1.0/ieee80211/phy3/rfkill3 disappeared 
Jan  9 08:20:30 Christian NetworkManager[861]:    SCPlugin-Ifupdown: devices added (path: /sys/devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6:1.0/net/wlan0, iface: wlan0) 
Jan  9 08:20:30 Christian NetworkManager[861]:    SCPlugin-Ifupdown: device added (path: /sys/devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6:1.0/net/wlan0, iface: wlan0): no ifupdown configuration found. 
Jan  9 08:20:30 Christian NetworkManager[861]: <info> (wlan0): using nl80211 for WiFi device control 
Jan  9 08:20:30 Christian NetworkManager[861]: <info> (wlan0): driver supports Access Point (AP) mode 
Jan  9 08:20:30 Christian NetworkManager[861]: <info> (wlan0): new 802.11 WiFi device (driver: 'carl9170' ifindex: 7) 
Jan  9 08:20:30 Christian NetworkManager[861]: <info> (wlan0): exported as /org/freedesktop/NetworkManager/Devices/5 
Jan  9 08:20:30 Christian NetworkManager[861]: <info> (wlan0): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2] 
Jan  9 08:20:30 Christian NetworkManager[861]: <info> (wlan0): bringing up device. 
Jan  9 08:20:30 Christian kernel: [ 2531.069599] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready 
Jan  9 08:20:30 Christian NetworkManager[861]: <info> (wlan0): preparing device. 
Jan  9 08:20:30 Christian NetworkManager[861]: <info> (wlan0): deactivating device (reason 'managed') [2] 
Jan  9 08:20:30 Christian NetworkManager[861]: <info> NetworkManager state is now DISCONNECTED 
Jan  9 08:20:30 Christian NetworkManager[861]: <info> rfkill4: found WiFi radio killswitch (at /sys/devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6:1.0/ieee80211/phy4/rfkill4) (driver carl9170) 
Jan  9 08:20:31 Christian NetworkManager[861]: <info> (wlan0) supports 4 scan SSIDs 
Jan  9 08:20:31 Christian NetworkManager[861]: <info> (wlan0): supplicant interface state: starting -> ready 
Jan  9 08:20:31 Christian NetworkManager[861]: <info> (wlan0): device state change: unavailable -> disconnected (reason 'supplicant-available') [20 30 42] 
Jan  9 08:20:31 Christian NetworkManager[861]: <warn> Trying to remove a non-existant call id. 
Jan  9 08:20:31 Christian wpa_supplicant[1094]: wlan0: CTRL-EVENT-SCAN-STARTED 
Jan  9 08:20:31 Christian NetworkManager[861]: <info> (wlan0): supplicant interface state: ready -> disconnected 
Jan  9 08:20:31 Christian NetworkManager[861]: <info> (wlan0) supports 4 scan SSIDs 
Jan  9 08:20:31 Christian NetworkManager[861]: <info> (wlan0): supplicant interface state: disconnected -> inactive 
Jan  9 08:20:54 Christian kernel: [ 2554.525275] net_ratelimit: 70 callbacks suppressed 
Jan  9 08:21:00 Christian kernel: [ 2560.512935] net_ratelimit: 28 callbacks suppressed 
Jan  9 08:22:10 Christian kernel: [ 2630.448331] net_ratelimit: 29 callbacks suppressed 
Jan  9 08:23:03 Christian kernel: [ 2683.394704] net_ratelimit: 28 callbacks suppressed 
Jan  9 08:24:06 Christian kernel: [ 2746.335730] net_ratelimit: 28 callbacks suppressed 
Jan  9 08:25:09 Christian kernel: [ 2809.272295] net_ratelimit: 28 callbacks suppressed 
Jan  9 08:26:12 Christian kernel: [ 2872.213415] net_ratelimit: 28 callbacks suppressed 
Jan  9 08:27:15 Christian kernel: [ 2935.148646] net_ratelimit: 28 callbacks suppressed 
Jan  9 08:28:18 Christian kernel: [ 2998.090868] net_ratelimit: 28 callbacks suppressed 
Jan  9 08:29:21 Christian kernel: [ 3061.026407] net_ratelimit: 28 callbacks suppressed 

KERNELVERSION (uname -a)

Linux Christian 3.19.0-43-generic #49~14.04.1-Ubuntu SMP Thu Dec 31 15:44:49 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux 

PCI / PCMCIA( lspci -nnk | grep -i net -A2 )

02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 0c) 
	Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:7850] 
	Kernel driver in use: r8169 

NETZWERKKONFIGURATION

cat /etc/network/interfaces

# interfaces(5) file used by ifup(8) and ifdown(8) 
auto lo 
iface lo inet loopback 

cat /etc/resolv.conf

# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) 
#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN 
nameserver 127.0.1.1 
search fritz.box 

cat /etc/hosts

127.0.0.1	localhost 
127.0.1.1	Christian 

# The following lines are desirable for IPv6 capable hosts 
::1     ip6-localhost ip6-loopback 
fe00::0 ip6-localnet 
ff00::0 ip6-mcastprefix 
ff02::1 ip6-allnodes 
ff02::2 ip6-allrouters 

ifconfig -a

eth0      Link encap:Ethernet  Hardware Adresse d8:cb:8a:1c:0f:ca  
          UP BROADCAST MULTICAST  MTU:1500  Metrik:1 
          RX-Pakete:0 Fehler:0 Verloren:0 Überläufe:0 Fenster:0 
          TX-Pakete:0 Fehler:0 Verloren:0 Überläufe:0 Träger:0 
          Kollisionen:0 Sendewarteschlangenlänge:1000 
          RX-Bytes:0 (0.0 B)  TX-Bytes:0 (0.0 B) 

lo        Link encap:Lokale Schleife  
          inet Adresse:127.0.0.1  Maske:255.0.0.0 
          inet6-Adresse: ::1/128 Gültigkeitsbereich:Maschine 
          UP LOOPBACK RUNNING  MTU:65536  Metrik:1 
          RX-Pakete:566 Fehler:0 Verloren:0 Überläufe:0 Fenster:0 
          TX-Pakete:566 Fehler:0 Verloren:0 Überläufe:0 Träger:0 
          Kollisionen:0 Sendewarteschlangenlänge:0 
          RX-Bytes:64629 (64.6 KB)  TX-Bytes:64629 (64.6 KB) 

wlan0     Link encap:Ethernet  Hardware Adresse bc:05:43:0d:a7:64  
          inet Adresse:192.168.178.34  Bcast:192.168.178.255  Maske:255.255.255.0 
          inet6-Adresse: fe80::be05:43ff:fe0d:a764/64 Gültigkeitsbereich:Verbindung 
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metrik:1 
          RX-Pakete:116 Fehler:0 Verloren:0 Überläufe:0 Fenster:0 
          TX-Pakete:183 Fehler:0 Verloren:0 Überläufe:0 Träger:0 
          Kollisionen:0 Sendewarteschlangenlänge:1000 
          RX-Bytes:17135 (17.1 KB)  TX-Bytes:44095 (44.0 KB) 

iwconfig

eth0      no wireless extensions. 

wlan0     IEEE 802.11abgn  ESSID:"FRITZ!Box 7312"  
          Mode:Managed  Frequency:2.412 GHz  Access Point: 24:65:11:80:35:F0   
          Bit Rate=1 Mb/s   Tx-Power=20 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off 
          Power Management:off 
          Link Quality=69/70  Signal level=-41 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0 
          Tx excessive retries:36  Invalid misc:49   Missed beacon:0 

lo        no wireless extensions. 

route -n

Kernel-IP-Routentabelle 
Ziel            Router          Genmask         Flags Metric Ref    Use Iface 
0.0.0.0         192.168.178.1   0.0.0.0         UG    0      0        0 wlan0 
192.168.178.0   0.0.0.0         255.255.255.0   U     9      0        0 wlan0 

arp -av

fritz.box (192.168.178.1) auf 24:65:11:80:35:ee [ether] auf wlan0 
Einträge: 1   Ignoriert: 0   Gefunden: 1 

ip neigh show

192.168.178.1 dev wlan0 lladdr 24:65:11:80:35:ee STALE 

NETWORKMANAGER

cat /var/lib/NetworkManager/NetworkManager.state

[main] 
NetworkingEnabled=true 
WirelessEnabled=true 
WWANEnabled=true 
WimaxEnabled=true 

cat /etc/NetworkManager/NetworkManager.conf

[main] 
plugins=ifupdown,keyfile,ofono 
dns=dnsmasq 

[ifupdown] 
managed=false 

SCHNITTSTELLEN

cat /etc/udev/rules.d/70-persistent-net.rules | egrep -i 'device|sub' -A3

# PCI device 0x10ec:0x8168 (r8169) 
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="d8:cb:8a:1c:0f:ca", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0" 

# USB device 0x:0x (carl9170) 
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="bc:05:43:0d:a7:64", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0" 

PINGS

ping -c 2 $(route -n | grep UG | awk {'print $2'})

PING 192.168.178.1 (192.168.178.1) 56(84) bytes of data. 
64 bytes from 192.168.178.1: icmp_seq=1 ttl=64 time=1.74 ms 
64 bytes from 192.168.178.1: icmp_seq=2 ttl=64 time=1.72 ms 

--- 192.168.178.1 ping statistics --- 
2 packets transmitted, 2 received, 0% packet loss, time 1001ms 
rtt min/avg/max/mdev = 1.722/1.733/1.745/0.043 ms 

ping -c 2 www.ubuntuusers.de

PING ubuntuusers.de (213.95.41.4) 56(84) bytes of data. 
64 bytes from ha.ubuntu-eu.org (213.95.41.4): icmp_seq=1 ttl=59 time=49.4 ms 
64 bytes from ha.ubuntu-eu.org (213.95.41.4): icmp_seq=2 ttl=59 time=31.8 ms 

--- ubuntuusers.de ping statistics --- 
2 packets transmitted, 2 received, 0% packet loss, time 1001ms 
rtt min/avg/max/mdev = 31.898/40.666/49.435/8.770 ms 

ping -c 2 213.95.41.4

PING 213.95.41.4 (213.95.41.4) 56(84) bytes of data. 
64 bytes from 213.95.41.4: icmp_seq=1 ttl=59 time=32.6 ms 
64 bytes from 213.95.41.4: icmp_seq=2 ttl=59 time=35.0 ms 

--- 213.95.41.4 ping statistics --- 
2 packets transmitted, 2 received, 0% packet loss, time 1001ms 
rtt min/avg/max/mdev = 32.611/33.840/35.070/1.243 ms 

WLAN EINGESCHALTET

rfkill list 
3: phy3: Wireless LAN 
	Soft blocked: no 
	Hard blocked: no

WLAN KARTEN / EMPFANG

iwlist chan

eth0      no frequency information. 

wlan0     32 channels in total; available frequencies : 
          Channel 01 : 2.412 GHz 
          Channel 02 : 2.417 GHz 
          Channel 03 : 2.422 GHz 
          Channel 04 : 2.427 GHz 
          Channel 05 : 2.432 GHz 
          Channel 06 : 2.437 GHz 
          Channel 07 : 2.442 GHz 
          Channel 08 : 2.447 GHz 
          Channel 09 : 2.452 GHz 
          Channel 10 : 2.457 GHz 
          Channel 11 : 2.462 GHz 
          Channel 12 : 2.467 GHz 
          Channel 13 : 2.472 GHz 
          Channel 36 : 5.18 GHz 
          Channel 40 : 5.2 GHz 
          Channel 44 : 5.22 GHz 
          Channel 48 : 5.24 GHz 
          Channel 52 : 5.26 GHz 
          Channel 56 : 5.28 GHz 
          Channel 60 : 5.3 GHz 
          Channel 64 : 5.32 GHz 
          Channel 100 : 5.5 GHz 
          Channel 104 : 5.52 GHz 
          Channel 108 : 5.54 GHz 
          Channel 112 : 5.56 GHz 
          Channel 116 : 5.58 GHz 
          Channel 120 : 5.6 GHz 
          Channel 124 : 5.62 GHz 
          Channel 128 : 5.64 GHz 
          Channel 132 : 5.66 GHz 
          Channel 136 : 5.68 GHz 
          Channel 140 : 5.7 GHz 
          Current Frequency:2.412 GHz (Channel 1) 

lo        no frequency information. 

sudo iwlist scan

eth0      Interface doesn't support scanning. 

wlan0     Failed to read scan data : Resource temporarily unavailable 

lo        Interface doesn't support scanning. 

LOG dmesg | egrep 'net|eth|sky|sun|sis|via|3c3|3c5|e100|8139|8169|acx|air|ath|atl|ar9|carl|atme|at7|herm|iwl|ipw|rtl8|r81|rt2|rt3|rt6|rt7|tg3|ssb|wl|b43|b44|ori|pri|p5|zd|ndis|wmi|ns8|FW'

[    0.000000] original variable MTRRs 
[    0.000000] PERCPU: Embedded 31 pages/cpu @ffff88021ea00000 s86144 r8192 d32640 u524288 
[    0.000000] pcpu-alloc: s86144 r8192 d32640 u524288 alloc=1*2097152 
[    0.000000] Calgary: detecting Calgary via BIOS EBDA area 
[    0.014070] Initializing cgroup subsys net_cls 
[    0.014075] Initializing cgroup subsys net_prio 
[    0.014900] CPU0: Thermal monitoring enabled (TM1) 
[    0.411627] microcode: Microcode Update Driver: v2.00 <tigran@aivazian.fsnet.co.uk>, Peter Oruba 
[    0.411885] audit: initializing netlink subsys (disabled) 
[    0.417107] thermal LNXTHERM:00: registered as thermal_zone0 
[    0.417109] ACPI: Thermal Zone [TZ00] (28 C) 
[    0.417232] thermal LNXTHERM:01: registered as thermal_zone1 
[    0.417233] ACPI: Thermal Zone [TZ01] (30 C) 
[    0.440126] tun: (C) 1999-2004 Max Krasnyansky <maxk@qualcomm.com> 
[    0.477004] Consider also installing thermald for improved thermal control. 
[    0.478558] Loaded X.509 cert 'Magrathea: Glacier signing key: e09b1e7e9841e9cfef256b70ab210562dab1ef68' 
[    0.507389] r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded 
[    0.507395] r8169 0000:02:00.0: can't disable ASPM; OS doesn't have ASPM control 
[    0.516749] r8169 0000:02:00.0 eth0: RTL8168g/8111g at 0xffffc90004e72000, d8:cb:8a:1c:0f:ca, XID 0c000800 IRQ 28 
[    0.516752] r8169 0000:02:00.0 eth0: jumbo features [frames: 9200 bytes, tx checksumming: ko] 
[   10.090421] Adding 8252412k swap on /dev/sda6.  Priority:-1 extents:1 across:8252412k FS 
[   11.064860] wmi: Mapper loaded 
[   11.870664] fbcon: inteldrmfb (fb0) is primary device 
[   12.366455] usbcore: registered new interface driver carl9170 
[   13.123132] ath: EEPROM regdomain: 0x8114 
[   13.123133] ath: EEPROM indicates we should expect a country code 
[   13.123146] ath: doing EEPROM country->regdmn map search 
[   13.123153] ath: country maps to regdmn code: 0x37 
[   13.123164] ath: Country alpha2 being used: DE 
[   13.123164] ath: Regpair used: 0x37 
[   13.180343] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht' 
[   16.022802] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 
[   16.957008] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready 
[   17.221627] r8169 0000:02:00.0 eth0: link down 
[   17.221660] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready 
[   45.900654] audit_printk_skb: 168 callbacks suppressed 
[   78.861243] ath: EEPROM regdomain: 0x8114 
[   78.861245] ath: EEPROM indicates we should expect a country code 
[   78.861246] ath: doing EEPROM country->regdmn map search 
[   78.861247] ath: country maps to regdmn code: 0x37 
[   78.861247] ath: Country alpha2 being used: DE 
[   78.861248] ath: Regpair used: 0x37 
[   78.861449] ieee80211 phy1: Selected rate control algorithm 'minstrel_ht' 
[   79.045988] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready 
[   90.018834] wlan0: authenticate with 24:65:11:80:35:f0 
[   90.097948] wlan0: send auth to 24:65:11:80:35:f0 (try 1/3) 
[   90.100763] wlan0: authenticated 
[   90.103834] wlan0: associate with 24:65:11:80:35:f0 (try 1/3) 
[   90.113512] wlan0: RX AssocResp from 24:65:11:80:35:f0 (capab=0x31 status=0 aid=1) 
[   90.117108] wlan0: associated 
[   90.117135] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready 
[   90.144545] wlan0: deauthenticating from 24:65:11:80:35:f0 by local choice (Reason: 2=PREV_AUTH_NOT_VALID) 
[   90.222130] wlan0: authenticate with 24:65:11:80:35:f0 
[   90.298984] wlan0: send auth to 24:65:11:80:35:f0 (try 1/3) 
[   90.302006] wlan0: authenticated 
[   90.303642] wlan0: associate with 24:65:11:80:35:f0 (try 1/3) 
[   90.309491] wlan0: RX AssocResp from 24:65:11:80:35:f0 (capab=0x31 status=0 aid=1) 
[   90.313049] wlan0: associated 
[  160.223256] wlan0: deauthenticating from 24:65:11:80:35:f0 by local choice (Reason: 3=DEAUTH_LEAVING) 
[  161.417434] ath: EEPROM regdomain: 0x8114 
[  161.417438] ath: EEPROM indicates we should expect a country code 
[  161.417439] ath: doing EEPROM country->regdmn map search 
[  161.417441] ath: country maps to regdmn code: 0x37 
[  161.417442] ath: Country alpha2 being used: DE 
[  161.417443] ath: Regpair used: 0x37 
[  161.417661] ieee80211 phy2: Selected rate control algorithm 'minstrel_ht' 
[  161.618198] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready 
[  172.599660] wlan0: authenticate with 24:65:11:80:35:f0 
[  172.677671] wlan0: send auth to 24:65:11:80:35:f0 (try 1/3) 
[  172.680502] wlan0: authenticated 
[  172.683008] wlan0: associate with 24:65:11:80:35:f0 (try 1/3) 
[  172.692336] wlan0: RX AssocResp from 24:65:11:80:35:f0 (capab=0x31 status=0 aid=1) 
[  172.695773] wlan0: associated 
[  172.695791] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready 
[  172.705452] wlan0: deauthenticating from 24:65:11:80:35:f0 by local choice (Reason: 2=PREV_AUTH_NOT_VALID) 
[  172.782990] wlan0: authenticate with 24:65:11:80:35:f0 
[  172.859878] wlan0: send auth to 24:65:11:80:35:f0 (try 1/3) 
[  172.863186] wlan0: authenticated 
[  172.866829] wlan0: associate with 24:65:11:80:35:f0 (try 1/3) 
[  172.875488] wlan0: RX AssocResp from 24:65:11:80:35:f0 (capab=0x31 status=0 aid=1) 
[  172.879095] wlan0: associated 
[  185.299821] net_ratelimit: 11 callbacks suppressed 
[ 1684.143714] wlan0: deauthenticating from 24:65:11:80:35:f0 by local choice (Reason: 3=DEAUTH_LEAVING) 
[ 1685.339641] ath: EEPROM regdomain: 0x8114 
[ 1685.339644] ath: EEPROM indicates we should expect a country code 
[ 1685.339645] ath: doing EEPROM country->regdmn map search 
[ 1685.339646] ath: country maps to regdmn code: 0x37 
[ 1685.339648] ath: Country alpha2 being used: DE 
[ 1685.339649] ath: Regpair used: 0x37 
[ 1685.339838] ieee80211 phy3: Selected rate control algorithm 'minstrel_ht' 
[ 1685.536501] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready 
[ 1696.525549] wlan0: authenticate with 24:65:11:80:35:f0 
[ 1696.602029] wlan0: send auth to 24:65:11:80:35:f0 (try 1/3) 
[ 1696.604967] wlan0: authenticated 
[ 1696.607389] wlan0: associate with 24:65:11:80:35:f0 (try 1/3) 
[ 1696.617873] wlan0: RX AssocResp from 24:65:11:80:35:f0 (capab=0x31 status=0 aid=1) 
[ 1696.621349] wlan0: associated 
[ 1696.621366] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready 
[ 1696.630758] wlan0: deauthenticating from 24:65:11:80:35:f0 by local choice (Reason: 2=PREV_AUTH_NOT_VALID) 
[ 1696.708462] wlan0: authenticate with 24:65:11:80:35:f0 
[ 1696.785602] wlan0: send auth to 24:65:11:80:35:f0 (try 1/3) 
[ 1696.788824] wlan0: authenticated 
[ 1696.791188] wlan0: associate with 24:65:11:80:35:f0 (try 1/3) 
[ 1696.798823] wlan0: RX AssocResp from 24:65:11:80:35:f0 (capab=0x31 status=0 aid=1) 
[ 1696.802560] wlan0: associated 
[ 1725.282813] net_ratelimit: 25 callbacks suppressed 
[ 2529.359542] wlan0: deauthenticating from 24:65:11:80:35:f0 by local choice (Reason: 3=DEAUTH_LEAVING) 
[ 2530.422820] ath: EEPROM regdomain: 0x8114 
[ 2530.422825] ath: EEPROM indicates we should expect a country code 
[ 2530.422827] ath: doing EEPROM country->regdmn map search 
[ 2530.422828] ath: country maps to regdmn code: 0x37 
[ 2530.422830] ath: Country alpha2 being used: DE 
[ 2530.422830] ath: Regpair used: 0x37 
[ 2530.423186] ieee80211 phy4: Selected rate control algorithm 'minstrel_ht' 
[ 2531.069599] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready 
[ 2554.525275] net_ratelimit: 70 callbacks suppressed 
[ 2560.512935] net_ratelimit: 28 callbacks suppressed 
[ 2630.448331] net_ratelimit: 29 callbacks suppressed 
[ 2683.394704] net_ratelimit: 28 callbacks suppressed 
[ 2746.335730] net_ratelimit: 28 callbacks suppressed 
[ 2809.272295] net_ratelimit: 28 callbacks suppressed 
[ 2872.213415] net_ratelimit: 28 callbacks suppressed 

Hallo,
folgende Dinge würde ich anpassen.

Systemeinstellungen unter Linux anpassen (Hardwareverschlüsselung off/Sendleistung etwas runter):

echo "options carl9170 nohwcrypt=1" | sudo tee /etc/modprobe.d/carl9179.conf
echo 'KERNEL=="wlan0", RUN+="/sbin/iwconfig wlan0 txpower 18"' | sudo tee -a /etc/udev/rules.d/75-wlan.rules 

Dann noch einen anderen freien USB Doppel-Anschluß ausprobieren, da sich der Stick anscheinend zwischendurch neu initialisiert (aufsteigendes phys. Interface phy3), was auf Probleme mit der Stromaufnahme hindeutet.

Ja, der Stick klinkt sich aus:

Jan  9 08:06:23 Christian NetworkManager[861]: <info> radio killswitch /sys/devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6:1.0/ieee80211/phy2/rfkill2 disappeared 

An Bus 1 befindet sich zusätzlich noch der SD-Kartenleser und die Maus. In Summe ist die Stromaufnahme schon zu hoch (100mA + 100mA + 500mA). 500mA sind erlaubt, wird die Stromaufnahme überschritten, schaltet der USB-Controler ab. Ich kann jetzt allerdings nicht sicher erkennen, ob sich diese tatsächlich am selben gemeinsamen Port befinden.

/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/14p, 480M 
    |__ Port 6: Dev 6, If 0, Class=Vendor Specific Class, Driver=carl9170, 480M 
    |__ Port 8: Dev 3, If 0, Class=Mass Storage, Driver=usb-storage, 480M 
    |__ Port 9: Dev 4, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M 

Bus 001 Device 004: ID 093a:2510 Pixart Imaging, Inc. Optical Mouse 
    MaxPower              100mA 
Bus 001 Device 003: ID 048d:1336 Integrated Technology Express, Inc. SD/MMC Cardreader 
    MaxPower              100mA 
Bus 001 Device 006: ID 057c:8401 AVM GmbH Fritz!WLAN N [Atheros AR9001U] 
    MaxPower              500mA 

Änderungen der FritzBox-Einstellungen:

• SSID ist noch auf Werkseinstellung „FRITZ!Box 7312“ - momentan nicht so wichtig

  • andere Geräte müssen dann auch umgestellt werden, was die SSID angeht, die Verschlüsselung wird aut. erkannt

• Verschlüsselung ist gemischt WPA2/2-TKIP, dass ist veraltet und rel. unsicher

  • verwende sicheres WPA2-AES (CCMP) und nicht irgendeinen Mischmodus mit TKIP/WPA1

• ob die Kanaleinstellunmg der Box ok ist, kann ich noch nicht sagen, da der Scan in dem Augenblick nicht funktionierte

Info zu allen Optionen in WLAN

Scan wiederholen bis es funktioniert:

sudo iwlist wlan0 scan | egrep -i 'cell|chan|essid|wpa|cipher|qual'

Es handelt sich ja anscheinend um ein stationär betriebenes Desktop-System?

Moin moin,

habe die (überfälligen) Sicherheitseinstellungen der Fritz Box verändert. Danke für den Hinweis. Zumindest das geklappt. Habe dann die Systemeinstellungen wie beschrieben angepasst … und folgendes wurde mir geantwortet.

echo "options carl9170 nohwcrypt=1" | sudo tee /etc/modprobe.d/carl9179.conf

options carl9170 nohwcrypt=1 

echo 'KERNEL=="wlan0", RUN+="/sbin/iwconfig wlan0 txpower 18"' | sudo tee -a /etc/udev/rules.d/75-wlan.rules

KERNEL=="wlan0", RUN+="/sbin/iwconfig wlan0 txpower 18" 

Egal welchen meiner USB-Anschlüsse ich nutze, der Stick bleibt dem Bus 1 zugeordnet und die Verbindung bricht nach einer Weile ab (insb. wenn mehrere Tab geöffnet sind und mehrere Seiten gleichzeitig geladen werden). Am Bus 2 war beim obigen Scan meine Festplatte abgeschlossen. Bei diesem USB-Port funktioniert der Stick gar nicht.

Hier aber noch die Ergebnisse des Scans (das gelbe ist mein Netzwerk).

sudo iwlist wlan0 scan | egrep -i 'cell|chan|essid|wpa|cipher|qual'

Cell 01 - Address: 24:65:11:80:35:F0 
                    Channel:1 
                    Frequency:2.412 GHz (Channel 1) 
                    Quality=68/70  Signal level=-42 dBm  
                    ESSID:"fensterbank" 
                    IE: IEEE 802.11i/WPA2 Version 1 
                        Group Cipher : CCMP 
                        Pairwise Ciphers (1) : CCMP 
          Cell 02 - Address: 5C:35:3B:F2:62:20 
                    Channel:1 
                    Frequency:2.412 GHz (Channel 1) 
                    Quality=70/70  Signal level=-38 dBm  
                    ESSID:"KDG-2621B" 
                    IE: WPA Version 1 
                        Group Cipher : TKIP 
                        Pairwise Ciphers (2) : TKIP CCMP 
                    IE: IEEE 802.11i/WPA2 Version 1 
                        Group Cipher : TKIP 
                        Pairwise Ciphers (2) : TKIP CCMP 
          Cell 03 - Address: 04:35:3B:F2:62:22 
                    Channel:1 
                    Frequency:2.412 GHz (Channel 1) 
                    Quality=70/70  Signal level=-40 dBm  
                    ESSID:"Vodafone Hotspot" 
          Cell 04 - Address: 00:23:08:35:78:F9 
                    Channel:1 
                    Frequency:2.412 GHz (Channel 1) 
                    Quality=43/70  Signal level=-67 dBm  
                    ESSID:"WLAN-357815" 
                    IE: WPA Version 1 
                        Group Cipher : TKIP 
                        Pairwise Ciphers (2) : TKIP CCMP 
                    IE: IEEE 802.11i/WPA2 Version 1 
                        Group Cipher : TKIP 
                        Pairwise Ciphers (2) : TKIP CCMP 
          Cell 05 - Address: 5C:35:3B:C4:DF:63 
                    Channel:6 
                    Frequency:2.437 GHz (Channel 6) 
                    Quality=70/70  Signal level=-38 dBm  
                    ESSID:"KDG-4DF5E" 
                    IE: WPA Version 1 
                        Group Cipher : TKIP 
                        Pairwise Ciphers (2) : TKIP CCMP 
                    IE: IEEE 802.11i/WPA2 Version 1 
                        Group Cipher : TKIP 
                        Pairwise Ciphers (2) : TKIP CCMP 
          Cell 06 - Address: 74:31:70:37:D5:88 
                    Channel:8 
                    Frequency:2.447 GHz (Channel 8) 
                    Quality=41/70  Signal level=-69 dBm  
                    ESSID:"WLAN-37D532" 
                    IE: IEEE 802.11i/WPA2 Version 1 
                        Group Cipher : CCMP 
                        Pairwise Ciphers (1) : CCMP 
          Cell 07 - Address: 84:A8:E4:F8:AA:32 
                    Channel:11 
                    Frequency:2.462 GHz (Channel 11) 
                    Quality=44/70  Signal level=-66 dBm  
                    ESSID:"Missy" 
                    IE: IEEE 802.11i/WPA2 Version 1 
                        Group Cipher : TKIP 
                        Pairwise Ciphers (2) : CCMP TKIP 
                    IE: WPA Version 1 
                        Group Cipher : TKIP 
                        Pairwise Ciphers (2) : CCMP TKIP 
          Cell 08 - Address: 1C:C6:3C:17:2C:B0 
                    Channel:2 
                    Frequency:2.417 GHz (Channel 2) 
                    Quality=39/70  Signal level=-71 dBm  
                    ESSID:"ALICE-WLAN12" 
                    IE: IEEE 802.11i/WPA2 Version 1 
                        Group Cipher : TKIP 
                        Pairwise Ciphers (2) : TKIP CCMP 

Ach so, ja, es ist ein normaler Despktop-Rechner, kein Notebook. Gibt es dafür eigentlich einen WLAN-Stick ohne Kapriolen unter Linux?

Lieben Gruß Jenny

Auch mit dem Fritz-Stick muss es eigentlich reibungslos funktionieren. Ändere zumächst einmal den Funkkanal der Box.

Kanal 1 ist mehrfach belegt, vor allem stört ganz sicher das sehr starke Netz "KDG-2621B" und "Vodafone Hotspot". Vom Empfang her muss auch da der Router quasi im selben Raum sein.

Kanal 2, 3, 4, 5, 7, 9, 12 und 13 sind frei, wobei sich im 2,4GHz-Band durch die Bandbreite von 20/40MHz ja mehrere Kanäle überlappen. Ich würde zunächst Kanal 13 empfehlen, da ist der Abstand zu allen anderen Netzen am höchsten.

Funktioniert die Einstellung der Sendeleistung?

iwconfig wlan0

Gibt es dafür eigentlich einen WLAN-Stick ohne Kapriolen unter Linux?

Ich empfehle dann eher einen Client-Adapter wie den TP-Link TL-WA890EA, keinerlei Treiberprobleme oder Ärger mit den USB-Anschlüssen, außerdem bereits Dualbandunterstützung, also zukunftssicher. Ethernet sollte des Desktop-Rechner ja eingebaut haben.

Hier in NRW gibt es momentan bei Aldi-Nord noch Restbestände eines a/c Repeaters für die Steckdose mit zwei Ethernetports (25€, in einigen Filialen bereits reduziert für 20€), der ebenfalls den Client-Modus unterstützt (als transparente Bridge oder Router konfigurierbar). Das Gerät habe ich jetzt schon ein paar mal eingesetzt und getestet, funktioniert einwandfrei. 2,4GHz und 5GHz-Band lässt sich einzeln konfigurieren oder auch abschalten.

Hey, es ist schon viel besser!!! Nach dem Wechsel des Funkkanals (von 1 auf die 13) ist die die Verbindung nun etwas stabiler, bricht aber trotzdem hin und wieder ab (insb. beim Laden mehrerer Seiten). Der Stick versucht aber, immer wieder neu die Verbindung herzustellen (was nun auch meistens funktioniert). Hier noch die Ergebnisse der Abfrage zur Sendeleistung:

wlan0     IEEE 802.11abgn  ESSID:"fensterbank"  
          Mode:Managed  Frequency:2.472 GHz  Access Point: 24:65:11:80:35:F0   
          Bit Rate=117 Mb/s   Tx-Power=18 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=70/70  Signal level=-38 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:2  Invalid misc:49   Missed beacon:0

Gibt es noch etwas, was man an der Fritzbox oder den WLAN-Einstellungen ändern könnte, damit der Stick gänzlich ohne Probleme läuft? Wenn ich das richtig verstanden habe, schlägst du den Repeater als Alternative zum Stick (oder als Ergänzung?) vor?

Der Empfang ist ja sehr gut, die Sendeleistung kann daher noch weiter reduziert werden:

echo 'KERNEL=="wlan0", RUN+="/sbin/iwconfig wlan0 txpower 16"' | sudo tee /etc/udev/rules.d/75-wlan.rules 

Du kannst die gleiche Befehlszeile mit einem andern Wert erneut verwenden, um die Sendeleistung bei Bedarf noch weiter zu senken oder auch wieder zu erhöhen (nicht jeder beliebige Wert wird akzeptiert). Treiber danach einfach kurz entladen/laden und Konfiguration prüfen:

sudo service network-manager stop
sudo modprobe -rfv carl9170 && sudo modprobe -v carl9170
sudo service network-manager start
iwconfig wlan0

Verwende für die Verbindung bitte mal folgendes Skript, um den Network-Manager zu umgehen. Irgendwelche Einstellungen am Skript müssen nicht vorgenommen werden. Eine aktuelle, fehlerbereinigte Version des Skripts hänge ich hier an.

Der Manager scannt in regelmäßigen Abständen die WLAN-Umgebung, was bei einigen Geräten zum Verbindungsabbruch führt, und hier wegen des festen Standort des PC sowieso nicht erforderlich ist.

Bleibt die Verbindung damit stabil, käme als Ersatz für den Manager Wicd oder eine manuelle Konfiguration der Verbindung über die interfaces in Frage. Wicd kann ebenfalls getestet werden ohne den Network-Manager direkt zu deinstallieren (siehe Wiki).

Wenn ich das richtig verstanden habe, schlägst du den Repeater als Alternative zum Stick (oder als Ergänzung?) vor?

Das Gerät von Aldi ginge entweder als Alternative zum Stick am PC, oder besser als Ergänzung an der Fritz-Box. Dadurch könnte man das 5GHz-Band nutzen, was völlig frei ist und störungsfrei verwendet werden kann. Der Fritz-Stick unterstützt ja ebenfalls das 5GHz-Band, die FB7312 unterstützt ja nur das 2,4GHz-Band, der genannte Repeater beides. WLAN der Box könnte man dann möglicherweise ganz abschalten.

Entschuldige, die späte Antwort, ich hatte die letzten Tage einiges um die Ohren und wollte das hier in Ruhe testen. Danke für das Skript. Hatte zunächst die Sendeleistung reduziert auf 14 (das geht ganz gut, jedenfalls nicht schlechter als vorher). Habe dann das Skript – ohne etwas daran zu verändern – ausprobiert. Die Verbindung wird auch hergestellt, bleibt aber nicht stabil und bricht auch hier nach einer Weile ab. Habe das Skript wieder gestoppt und bin zum Network Manager zurückgekehrt. Das Ist jetzt wahrscheinlich keine sehr genaue Problembeschreibung. Die Ursache liegt also eher beim Network Manager, nicht so sehr an der WLAN-Konfiguration des Sticks/der Box?

Wenn es auch mit dem Skript Abbrüche gibt, dann liegt es eigentlich auch nicht am Network-Manager. Dann teste doch bitte noch Wicd.

Wenn eine USB-Verlängerung vorhanden ist (max 1,5 Meter), dann verwende auch diese, um den Stick etwas weiter entfernt vom Rechner und möglicherweise anderen Metallteilen in der Nähe positionieren zu können.

Nochmal vielen Dank für Deine Hilfe. Habe Wicd getestet, den Network Manager dabei zunächst aber nur gestoppt und nicht deinstalliert. Auch hier hatte ich dasselbe Problem mit Verbindungsabbrüchen. Außerdem müsste ich auch perspektivisch VPN nutzen, was mit dem Wicd – so wie ich das verstanden habe – noch nicht möglich ist. Da ich absolute Anfängerin bei Ubuntu bin, würde ich mich wahrscheinlich nach Alternativen zum Fritz Stick umschauen, die einfach funktionieren. Ich werde mal einen der Client-Adapter testen… oder mir einfach ein sehr langes Kabel kaufen 😉 Lieben Gruß und ein schönes Wochenende Jenny

Ein Kabel ist natürlich immer besser, wenn es sich mit geringem Aufwand und nach Möglichkeit unsichtbar verlegen lässt sowieso.