uvcvideo module randomly fails to load
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Expired
|
Medium
|
Unassigned | ||
linux-ubuntu-modules-2.6.24 (Ubuntu) |
Won't Fix
|
Undecided
|
Unassigned |
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.
Changed in linux: | |
status: | Incomplete → New |
Changed in linux: | |
status: | New → Confirmed |
Changed in linux: | |
assignee: | nobody → ubuntu-kernel-team |
importance: | Undecided → Medium |
status: | Confirmed → Triaged |
tags: | added: cherry-pick |
Hi Sympy,
Since the upcoming Intrepid Ibex 8.10 release is actively being worked on, care to confirm if this is still an issue with the latest Alpha for the upcoming Intrepid Ibex 8.10. You should be able to test via a LiveCD - http:// www.ubuntu. com/testing. Please let us know your results.
Additionally, beginning with the Intrepid Ibex 8.10 development cycle the linux-ubuntu- modules package was actually merged with the linux kernel package. Going forward, bugs that would have been reported against linux-ubuntu- modules should now just be reported against linux. I'll go ahead and add the 'linux' task for this report. However, against linux-ubuntu- modules- 2.6.24 this will be closed as it does not qualify for a Stable Release Update - http:// wiki.ubuntu. com/StableRelea seUpdates . Thanks.