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[Jeremy Powell <1233575@xxxxxxxxxxxxxxxxxx>]

Hi,

Thanks for the speedy response.

I have installed 3.12.0-999-generic and so far I haven't had any kernel
panics, but it is an intermittent problem, so I am reluctant to say that
the problem is resolved in the mainline yet.  Also, although there have
not yet been any kernel panics, the USB UVC device can become
unresponsive.  Here is the output of dmesg, showing the device becoming
unresponsive at ~226:

[  210.854994] xhci_hcd 0000:03:00.0: Signal while waiting for configure endpoint command
[  210.855282] usb 6-1: Not enough bandwidth for altsetting 0
[  216.913188] xhci_hcd 0000:03:00.0: Signal while waiting for configure endpoint command
[  216.913537] usb 6-1: Not enough bandwidth for altsetting 0
[  226.520929] xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD
[  226.521291] xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD
[  226.521682] xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD
[  226.522044] xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD
[  226.522414] xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD
[  226.522441] xhci_hcd 0000:03:00.0: Signal while waiting for configure endpoint command
[  226.522475] usb 6-1: Not enough bandwidth for altsetting 0

The device resumes normal operation after being unplugged and plugged
back in.

I'll keep running the mainline kernel and update this issue if I have
any further findings.

Thanks for your help!

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https://bugs.launchpad.net/bugs/1233575

Title:
  Kernel panic with Magewell USB 3.0 UVC capture device

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  A kernel panic can occur when using a Magewell USB 3.0 UVC video
  capture device. It frequently occurs when killing a process using the
  device with SIGTERM.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: linux-image-3.8.0-31-generic 3.8.0-31.46
  ProcVersionSignature: Ubuntu 3.8.0-31.46-generic 3.8.13.8
  Uname: Linux 3.8.0-31-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8.3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC2:  jeremy     2178 F.... pulseaudio
   /dev/snd/controlC0:  jeremy     2178 F.... pulseaudio
   /dev/snd/controlC1:  jeremy     2178 F.... pulseaudio
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
  Date: Tue Oct  1 10:24:06 2013
  InstallationDate: Installed on 2013-07-31 (61 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  IwConfig:
   eth0      no wireless extensions.
   
   lo        no wireless extensions.
  MachineType: Gigabyte Technology Co., Ltd. To be filled by O.E.M.
  MarkForUpload: True
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-31-generic root=UUID=1ed8a421-e1ce-4c23-8c7b-a334d9b30b28 ro quiet splash
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-31-generic N/A
   linux-backports-modules-3.8.0-31-generic  N/A
   linux-firmware                            1.106
  RfKill:
   
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/24/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: F16
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: Z77X-D3H
  dmi.board.vendor: Gigabyte Technology Co., Ltd.
  dmi.board.version: x.x
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF16:bd10/24/2012:svnGigabyteTechnologyCo.,Ltd.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnZ77X-D3H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: To be filled by O.E.M.
  dmi.product.version: To be filled by O.E.M.
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.

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