Hi!
Ich hab nun inzwischen drei verschiedene powered USB-Hubs ausprobiert, aber wirklich jeder hat nach einer Weile Fehlermeldungen im dmesg-Output verursacht und ich konnte auch nicht mehr auf die angeschlossenen USB-Geräte zugreifen (egal, ob die Geräte am Hub oder direkt am Laptop angeschlossen waren!). Nachdem ich den Hub abgezogen und das USB-Kernel-Module (ehci oder so?) entfernt und wieder eingebunden hatte, funktionierten zumindest die Geräte, die direkt angeschlossen waren, wieder.
Ich hab auch schon mehere Kabel (alle funktionieren an anderen Geräten problemlos) ausprobiert und ein non-powered USB-Hub funktioniert auch ohne Probleme. Auch unter Windows XP auf dem selben Laptop funktioniert der Hub, sowie auf einem anderen Ubuntu an einem anderen Rechner.
Hier der relevante Output von dmesg:
[10539.516158] hub 6-7:1.0: cannot reset port 3 (err = -110) [10540.528648] hub 6-7:1.0: cannot reset port 3 (err = -110) [10541.540151] hub 6-7:1.0: cannot reset port 3 (err = -110) [10542.551642] hub 6-7:1.0: cannot reset port 3 (err = -110) [10543.562144] hub 6-7:1.0: cannot reset port 3 (err = -110) [10543.562151] hub 6-7:1.0: Cannot enable port 3. Maybe the USB cable is bad? [10544.574641] hub 6-7:1.0: cannot disable port 3 (err = -110) [10545.585142] hub 6-7:1.0: cannot reset port 3 (err = -110) [10546.597634] hub 6-7:1.0: cannot reset port 3 (err = -110) [10547.608131] hub 6-7:1.0: cannot reset port 3 (err = -110) [10548.619631] hub 6-7:1.0: cannot reset port 3 (err = -110) [10549.632127] hub 6-7:1.0: cannot reset port 3 (err = -110) [10549.632133] hub 6-7:1.0: Cannot enable port 3. Maybe the USB cable is bad? [10550.642626] hub 6-7:1.0: cannot disable port 3 (err = -110) [10551.655111] hub 6-7:1.0: cannot reset port 3 (err = -110) [10552.665622] hub 6-7:1.0: cannot reset port 3 (err = -110) [10553.677789] hub 6-7:1.0: cannot reset port 3 (err = -110) [10553.762413] usb 6-7: USB disconnect, address 5 [10553.762417] usb 6-7.3: USB disconnect, address 7 [10554.688612] hub 6-7:1.0: cannot reset port 3 (err = -110) [10554.688621] hub 6-7:1.0: cannot reset port 3 (err = -19) [10554.688625] hub 6-7:1.0: cannot disable port 3 (err = -19) [10554.688630] hub 6-7:1.0: cannot disable port 3 (err = -19) [10554.688642] hub 6-7:1.0: cannot reset port 4 (err = -19) [10554.688647] hub 6-7:1.0: cannot disable port 4 (err = -19) [10554.688650] hub 6-7:1.0: cannot disable port 4 (err = -19) [10554.688683] sd 8:0:0:0: Device offlined - not ready after error recovery [10554.688910] sd 9:0:0:0: Device offlined - not ready after error recovery [10554.692624] Buffer I/O error on device sde, logical block 7890 [10554.692635] lost page write due to I/O error on sde [10554.692642] Buffer I/O error on device sde, logical block 7891 [10554.692645] lost page write due to I/O error on sde [10554.692648] Buffer I/O error on device sde, logical block 7892 [10554.692650] lost page write due to I/O error on sde [10554.692654] Buffer I/O error on device sde, logical block 7893 [10554.692656] lost page write due to I/O error on sde [10554.692674] Buffer I/O error on device sde, logical block 7896 [10554.692677] lost page write due to I/O error on sde [10554.692686] Buffer I/O error on device sde, logical block 7897 [10554.692688] lost page write due to I/O error on sde [10554.692701] sd 9:0:0:0: [sde] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK,SUGGEST_OK [10554.692705] end_request: I/O error, dev sde, sector 1 [10554.692708] Buffer I/O error on device sde, logical block 1 [10554.692710] lost page write due to I/O error on sde [10554.721567] usb 6-7.4: USB disconnect, address 6 [10554.733883] VFS: busy inodes on changed media. [10554.733901] scsi 9:0:0:0: rejecting I/O to dead device [10554.733918] scsi 9:0:0:0: rejecting I/O to dead device [10554.733922] scsi 9:0:0:0: rejecting I/O to dead device [10554.733926] scsi 9:0:0:0: rejecting I/O to dead device [10554.733929] scsi 9:0:0:0: [sde] READ CAPACITY failed [10554.733931] scsi 9:0:0:0: [sde] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK,SUGGEST_OK [10554.733935] scsi 9:0:0:0: [sde] Sense not available. [10554.733939] scsi 9:0:0:0: rejecting I/O to dead device [10554.733942] scsi 9:0:0:0: [sde] Write Protect is off [10554.733945] scsi 9:0:0:0: [sde] Mode Sense: 00 00 00 00 [10554.733947] scsi 9:0:0:0: [sde] Assuming drive cache: write through
Hat jemand eine Idee?