Erst einmal besten Dank für deine Hinweise.
Ich habe mich bemüht das eine oder andere nachzuvollziehen.
Die Pegel in alsamixer sind alle rot. Wenn ich sie niedriger stelle und danach die Audio-Einstellungen aufrufen, dann sind die Einstellungen wieder im roten Bereich. Ich teste also vorsichtig. Durch Abspielen von Musik scheinen sich die Pegel im alsamixer allerdings nicht zu verändern. Diesen Hinweis verstehe ich also scheinbar nicht korrekt.
Den Link für die Einrichtung der Soundkarte hatte ich schon vorher gesehen. Ich hatte die Anleitung für passenden Treiber finden auch angefangen konnte mich da aber nicht durch kämpfen.
Von der Problembehebung schien mir nur die Prioriätsanpassung für pulseaudio relevant. Die habe ich versucht. Aber auch manuelle Vergabe einer minimalen Priorität über die Systemüberwachung hat das Knistern nicht beheben können.
Nachdem ich gestern den Rechner frustriert ausgeschaltet habe ist der neue Stand also folgender:
Sound im Firefox scheint immer super zu funktionieren.
Die Systemsound laufen meist super. Hatte vorhin mal Probleme die aber dann wieder verschwunden sind. Konnte ich nicht nachvollziehen.
Im Skype ist der Sound unmöglich. Die Stimme sind derart verzerrt, dass ich nichts verstehen kann.
Hier noch das gewünschte Log:
alexander@Alex-Ubuntu:~$ grep pulse /var/log/syslog
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: snd_pcm_avail() gibt einen Wert zurück, welche außerordentlich groß ist: 3528320 bytes (10000 ms).
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: Dies ist wahrscheinlich ein Fehler im ALSA-Treiber 'snd_hda_intel'. Bitte melden Sie diesen Punkt den ALSA-Entwicklern.
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: snd_pcm_dump():
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: Soft volume PCM
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: Control: PCM Playback Volume
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: min_dB: -51
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: max_dB: 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: resolution: 256
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: Its setup is:
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: stream : PLAYBACK
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: access : MMAP_INTERLEAVED
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: format : S16_LE
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: subformat : STD
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: channels : 4
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: rate : 44100
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: exact rate : 44100 (44100/1)
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: msbits : 16
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: buffer_size : 441040
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: period_size : 88208
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: period_time : 2000181
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: tstamp_mode : ENABLE
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: period_step : 1
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: avail_min : 440158
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: period_event : 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: start_threshold : -1
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: stop_threshold : 7758857733029232640
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: silence_threshold: 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: silence_size : 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: boundary : 7758857733029232640
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: Slave: Hardware PCM card 0 'HDA ATI SB' device 0 subdevice 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: Its setup is:
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: stream : PLAYBACK
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: access : MMAP_INTERLEAVED
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: format : S16_LE
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: subformat : STD
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: channels : 4
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: rate : 44100
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: exact rate : 44100 (44100/1)
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: msbits : 16
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: buffer_size : 441040
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: period_size : 88208
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: period_time : 2000181
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: tstamp_mode : ENABLE
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: period_step : 1
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: avail_min : 440158
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: period_event : 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: start_threshold : -1
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: stop_threshold : 7758857733029232640
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: silence_threshold: 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: silence_size : 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: boundary : 7758857733029232640
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: appl_ptr : 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: hw_ptr : 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: snd_pcm_mmap_begin() gibt einen Wert zurück, welche außerordentlich groß ist: 3528320 bytes (10000 ms).
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: Dies ist wahrscheinlich ein Fehler im ALSA-Treiber 'snd_hda_intel'. Bitte melden Sie diesen Punkt den ALSA-Entwicklern.
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: snd_pcm_dump():
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: Soft volume PCM
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: Control: PCM Playback Volume
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: min_dB: -51
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: max_dB: 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: resolution: 256
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: Its setup is:
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: stream : PLAYBACK
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: access : MMAP_INTERLEAVED
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: format : S16_LE
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: subformat : STD
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: channels : 4
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: rate : 44100
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: exact rate : 44100 (44100/1)
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: msbits : 16
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: buffer_size : 441040
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: period_size : 88208
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: period_time : 2000181
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: tstamp_mode : ENABLE
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: period_step : 1
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: avail_min : 440158
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: period_event : 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: start_threshold : -1
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: stop_threshold : 7758857733029232640
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: silence_threshold: 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: silence_size : 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: boundary : 7758857733029232640
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: Slave: Hardware PCM card 0 'HDA ATI SB' device 0 subdevice 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: Its setup is:
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: stream : PLAYBACK
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: access : MMAP_INTERLEAVED
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: format : S16_LE
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: subformat : STD
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: channels : 4
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: rate : 44100
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: exact rate : 44100 (44100/1)
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: msbits : 16
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: buffer_size : 441040
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: period_size : 88208
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: period_time : 2000181
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: tstamp_mode : ENABLE
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: period_step : 1
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: avail_min : 440158
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: period_event : 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: start_threshold : -1
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: stop_threshold : 7758857733029232640
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: silence_threshold: 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: silence_size : 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: boundary : 7758857733029232640
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: appl_ptr : 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: hw_ptr : 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: snd_pcm_delay() gibt einen Wert zurück, welche außerordentlich groß ist: 3528320 bytes (10000 ms).
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: Dies ist wahrscheinlich ein Fehler im ALSA-Treiber 'snd_hda_intel'. Bitte melden Sie diesen Punkt den ALSA-Entwicklern.
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: snd_pcm_dump():
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: Soft volume PCM
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: Control: PCM Playback Volume
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: min_dB: -51
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: max_dB: 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: resolution: 256
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: Its setup is:
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: stream : PLAYBACK
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: access : MMAP_INTERLEAVED
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: format : S16_LE
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: subformat : STD
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: channels : 4
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: rate : 44100
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: exact rate : 44100 (44100/1)
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: msbits : 16
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: buffer_size : 441040
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: period_size : 88208
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: period_time : 2000181
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: tstamp_mode : ENABLE
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: period_step : 1
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: avail_min : 440158
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: period_event : 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: start_threshold : -1
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: stop_threshold : 7758857733029232640
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: silence_threshold: 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: silence_size : 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: boundary : 7758857733029232640
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: Slave: Hardware PCM card 0 'HDA ATI SB' device 0 subdevice 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: Its setup is:
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: stream : PLAYBACK
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: access : MMAP_INTERLEAVED
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: format : S16_LE
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: subformat : STD
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: channels : 4
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: rate : 44100
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: exact rate : 44100 (44100/1)
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: msbits : 16
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: buffer_size : 441040
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: period_size : 88208
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: period_time : 2000181
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: tstamp_mode : ENABLE
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: period_step : 1
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: avail_min : 440158
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: period_event : 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: start_threshold : -1
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: stop_threshold : 7758857733029232640
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: silence_threshold: 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: silence_size : 0
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: boundary : 7758857733029232640
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: appl_ptr : 441040
Sep 3 08:21:32 Alex-Ubuntu pulseaudio[1516]: alsa-util.c: hw_ptr : 0
alexander@Alex-Ubuntu:~$
EDIT
Das Ausschalten von pulseaudio löst das Problem von Skype ja auf keinen Fall. Irgendwie kann das Programm wohl nur mit pulseaudio betrieben werden?!?!