kernel-packages team mailing list archive

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

superlex, if you have a bug in Ubuntu, the Ubuntu Kernel team, Ubuntu Bug Control team, and Ubuntu Bug Squad would like you to please file a new report by executing the following in a terminal while booted into a Ubuntu repository kernel (not a mainline one) via:
ubuntu-bug linux

For more on this, please read the official Ubuntu documentation:
Ubuntu Bug Control and Ubuntu Bug Squad: https://wiki.ubuntu.com/Bugs/BestPractices#X.2BAC8-Reporting.Focus_on_One_Issue
Ubuntu Kernel Team: https://wiki.ubuntu.com/KernelTeam/KernelTeamBugPolicies#Filing_Kernel_Bug_reports
Ubuntu Community: https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette

When opening up the new report, please feel free to subscribe me to it.

Please note, not filing a new report would delay your problem being
addressed as quickly as possible.

No need exists to comment here at this time. After reading the above
documentation in it's entirety, if you have further questions, you are
welcome to redirect them to the appropriate mailing list or forum via
http://www.ubuntu.com/support/community/mailinglists , or you may
contact me directly.

Thank you for your understanding.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
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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