Bug 816524 - Freeze on cam access
Summary: Freeze on cam access
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: 17
Hardware: x86_64
OS: Unspecified
unspecified
high
Target Milestone: ---
Assignee: Kernel Maintainer List
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2012-04-26 10:29 UTC by muny
Modified: 2012-04-26 10:55 UTC (History)
5 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2012-04-26 10:55:27 UTC
Type: Bug
Embargoed:


Attachments (Terms of Use)
lsusb -v on device (14.20 KB, text/plain)
2012-04-26 10:29 UTC, muny
no flags Details

Description muny 2012-04-26 10:29:50 UTC
Created attachment 580424 [details]
lsusb -v on device

Description of problem:
System freeze (without [easy?] possibility to see any log, even with kernel-debug). Complete freeze (no sysrqkey) when system and any app try to access integrated webcam

Version-Release number of selected component (if applicable):
kernels 3.3.*-fedora / 3.3.*-vanilla

How reproducible:
Install Fedora on hardware with idVendor:090c Product:37b0 webcam. Try to access on with any app.


Additional info:
Seems to be another bug on UVC in 3.3 kernels (with some colors tables from old gspca but missing in uvc). This one freeze totally system.
-> Webcam works perfectly on 3.2 (same machine/hardware : not local hw pb)

Comment 1 muny 2012-04-26 10:55:27 UTC
This is the return of droped images bug (this hardware, 090c:37b0, works perfectly on a 3.2.* Fedora kernel without workaround. Bur not with 3.3.* Fedora (nor 3.3.* vanilla). Workaround :

rmmod uvcvideo;
modprobe uvcvideo nodrop=1;
echo "options uvcvideo nodrop=1" > /etc/modprobe.d/uvcvideo.conf

works fine.


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