kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

Sympy, this bug was reported a while ago and there hasn't been any
activity in it recently. We were wondering if this is still an issue? If
so, could you please test for this with the latest development release
of Ubuntu? ISO images are available from http://cdimage.ubuntu.com
/daily-live/current/ .

If it remains an issue, could you please run the following command in
the development release from a Terminal
(Applications->Accessories->Terminal), as it will automatically gather
and attach updated debug information to this report:

apport-collect -p linux <replace-with-bug-number>

Also, could you please test the latest upstream kernel available following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Please do not test the daily folder, but the one all the way at the bottom. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-v3.11

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your
understanding.

** Changed in: linux (Ubuntu)
       Status: Triaged => Incomplete

** Attachment removed: "dmesg | grep -C 5 -i uvcvideo output"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/241753/+attachment/757406/+files/dmesg%20%7C%20grep%20-C%205%20-i%20uvcvideo

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https://bugs.launchpad.net/bugs/241753

Title:
  uvcvideo module randomly fails to load

Status in “linux” package in Ubuntu:
  Incomplete
Status in “linux-ubuntu-modules-2.6.24” package in Ubuntu:
  Won't Fix

Bug description:
  I have a Dell Vostro 1400 with a built-in webcam that works flawlessly
  with uvcvideo. However, during the boot I get

  uvcvideo: Failed to query (129) UVC control 1 (unit 0) : -32

  right after "loading hardware drivers...". Googling a bit, I found out
  that this error message is harmless and can be ignored. And, in fact,
  the camera completely works despite that. However, randomly the module
  fails to load. In those cases, the message above is shown twice and
  after the two lines I get "failed to initialize device". When that
  happens, the camera does not work until I do a modprobe uvcvideo
  manually (works fine after that).

  This error seems random and I'm not sure how to reproduce. It seems a
  race condition is happening during the module loading. This problem
  was worse in Gutsy, where it happened more or less in one out of four
  or five boots. Now in Hardy it happens VERY rarely, but still happens.

  My workaround was blacklisting uvcvideo and adding it to /etc/modules.
  This ensures the module is loaded during the "loading manual
  drivers..." stage, which happens after "loading hardware drivers..."
  has finished. That seemed to fix the problem.

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