Created attachment 592999 [details] dmesg Description of problem: My logitech webcam c270 (046d:0825) fails to work with these kernels. In Fedora 17 it functions okay. It looks like a regression in the usb-code or uvc-driver [1] When I remove the webcam the kernel crashes with the following message: "khubd/21 is trying to acquire lock". See further /var/log/messages. [1] http://www.spinics.net/lists/linux-media/msg49077.html Version-Release number of selected component (if applicable): 3.5.0-0.rc2.git0.1.fc18.x86_64 3.5.0-0.rc2.git0.3.fc18.x86_64 3.5.0-0.rc3.git0.2.fc18.x86_64 How reproducible: Always Steps to Reproduce: 1. boot system --> see messages in dmesg 2. run kamoso (KDE) or Cheese (Gnome) -> no webcam 3. see dmesg -> probe of webcam fails Actual results: no webcam Expected results: light webcam turns on, kamoso/cheese shows image Additional info: In /var/log/message you'll see that systemd-udevd taints the kernel. In the output it seems to be related to the sound system e.g card1. That's the microphone of the webcam. Note: I'v added messages from the crash and the current running/latest kernel in one messages file. dmesg is from the latest kernel.
Created attachment 593000 [details] /var/log/messages
Which F17 kernels work? Specifically, do the F17 3.4 kernel updates function correctly?
Hi Josh, All kernels - now running 3.4.2-4.fc17.x86_64 - have been working fine. No errors in /var/log/messages and dmesg. Martin Kho
Hi, I've checked some older /var/log/messages - /var/log/messages-20120610 - and saw that the first kernel that showed the issues is 3.5.0-0.rc0.git9.2.fc18.x86_64. This kernel was the first one that was installed after upgrading the stable Fedora 17 KDE-liveCD. 3.5.0-0.rc2.git0.1 is the oldest kernel that is currently installed. Hope this helps. Martin Kho
Hi, FYI: Upstream bugreport [1] comment #6 speaks of a discussion on the alsa-devel list. A fix would land in mainstream soon. HTH Martin Kho [1] https://bugzilla.kernel.org/show_bug.cgi?id=44281
Hi, Pressed somewhat too quick on Save Changes :-) From [1] comment #54 it seems that kernel v3.5-rc7 contains a fix. As soon this kernel lands in rawhide I'll let you know if it works for me. Martin Kho https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1018020
Hi, Kernel-3.5.0-0.rc7.git0.1.fc18.x86_64 indeed solved this issue. This report can be closed. Thanks, Martin Kho
Thank you for letting us know. Your persistence in the bug is appreciated.