[hardy] oops when running cheese on Thinkpad X300

I just tested again with gstreamer-properties and that is Oopsing the kernel now too, so perhaps this is something that changed in the most recent kernel updates.

I didn't see this particular device listed at http://linux-uvc.berlios.de/ as supported. However, they say "Other UVC compliant video input devices are very likely to be supported."

It is indeed not specifically listed and I can't reproduce it working at all. My only suspicion at this point is that I was using 2.6.24-10, but I don't think the uvc driver has changed since then, and that version is gone from the archives.

This is the output of v4l-info on the camera, up to the point where the tool segfaults because the driver has oopsed in uvc_get_video_ctrl (which seems to be the same place as before).

Logitech Sphere/Orbit not recognized. Cheese and Ekiga crashing. Similar regression occurred during Gusty beta.

Attached are output files requested.

Rob: the OOPS in your kernel dmesg strongly suggests to me that it's actually an audio driver that's crashing (I guess your camera includes a USB microphone). I suggest you report a new bug against linux-ubuntu-modules or something alsa related.

I have been talking to upstream about this and Laurent.Pinchart has offered a patch for testing. It seems to fix this issue for me - the camera works in cheese multiple times after booting, and suspending multiple times - I can no longer immediately reproduce the OOPS.

I have asked Laurent (ie upstream) to comment on the potential impact of the patch for other cameras, but even if it's super low risk, it seems to be too late to make Hardy now.

@Rob
There has already been a fix to sco_bt (which may cause this). Should be included in -14.

@Ng, thanks for the pointer. Looking at the patch it absolutely makes sense not to access an array before its start. ;-) So it shouldn't harm.

This is fixed in 2.6.24-15. Thanks Stefan!