Running with: Linux quadrio.nederware.nl 3.15.0-031500rc1-generic #201404131835 SMP Sun Apr 13 22:36:23 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
But didn't help. 1. I first upgraded to latest 14.04, then rebooted. No webcam found after reboot. 2. Then installed the new kernel, still no webcam found. 3. I then turned off the computer, waited a while, and turned it on. Skype recognised webcam for a few milliseconds, then video crashed. After the crash I rebooted, webcam not found. Turned it off, waited, and on again, wecbcam found. It seems that after a crash I need to physicall turn off the computer before lsusb sees the webcam. This is what it sees after I've turned off the computer: Bus 002 Device 004: ID 17ef:480c Lenovo Integrated Webcam That device simply is not found after the crash. Messages in /var/log/syslog when the webcam was found for a few millisecs: Apr 18 11:42:14 quadrio kernel: [ 285.124490] usb 2-4: USB disconnect, device number 4 Apr 18 11:42:14 quadrio kernel: [ 285.484046] usb 7-2: new full-speed USB device number 2 using uhci_hcd Apr 18 11:42:14 quadrio kernel: [ 285.604111] usb 7-2: device descriptor read/64, error -71 Apr 18 11:42:14 quadrio kernel: [ 285.828075] usb 7-2: device descriptor read/64, error -71 Apr 18 11:42:15 quadrio kernel: [ 286.248105] usb 7-2: new full-speed USB device number 3 using uhci_hcd Apr 18 11:42:15 quadrio kernel: [ 286.368126] usb 7-2: device descriptor read/64, error -71 Apr 18 11:42:15 quadrio kernel: [ 286.592101] usb 7-2: device descriptor read/64, error -71 Apr 18 11:42:15 quadrio kernel: [ 286.808135] usb 7-2: new full-speed USB device number 4 using uhci_hcd Apr 18 11:42:16 quadrio kernel: [ 287.224074] usb 7-2: device not accepting address 4, error -71 Apr 18 11:42:16 quadrio kernel: [ 287.336094] usb 7-2: new full-speed USB device number 5 using uhci_hcd Apr 18 11:42:16 quadrio kernel: [ 287.748043] usb 7-2: device not accepting address 5, error -71 Apr 18 11:42:16 quadrio kernel: [ 287.748083] hub 7-0:1.0: unable to enumerate USB device on port 2 ** Tags added: kernel-bug-exists-upstream -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1308311 Title: uvcvideo kernel module crash To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1308311/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
