Laurent, Here is the request dmesg output when controls start to fail: [ 152.923415] uvcvideo: Failed to query (1) UVC control 1 (unit 9) : -32 (exp. 4). [ 153.588159] uvcvideo: Failed to query (1) UVC control 1 (unit 9) : -110 (exp. 4). [ 154.185036] uvcvideo: Failed to query (1) UVC control 1 (unit 9) : -110 (exp. 4). [ 154.484165] uvcvideo: Failed to query (1) UVC control 1 (unit 9) : -110 (exp. 4). [ 154.784035] uvcvideo: Failed to query (1) UVC control 1 (unit 9) : -110 (exp. 4). [ 155.084039] uvcvideo: Failed to query (1) UVC control 1 (unit 9) : -110 (exp. 4). [ 155.384161] uvcvideo: Failed to query (1) UVC control 1 (unit 9) : -110 (exp. 4). [ 155.685037] uvcvideo: Failed to query (1) UVC control 1 (unit 9) : -110 (exp. 4). [ 155.984162] uvcvideo: Failed to query (1) UVC control 1 (unit 9) : -110 (exp. 4). [ 156.285167] uvcvideo: Failed to query (1) UVC control 1 (unit 9) : -110 (exp. 4). [ 156.584167] uvcvideo: Failed to query (1) UVC control 1 (unit 9) : -110 (exp. 4).
I was just paning left and right and after a while the camera just stopped responding, video is still streaming ok. all other controls also stopped responding (see brightness control below): [ 500.896084] uvcvideo: Failed to query (1) UVC control 2 (unit 2) : -110 (exp. 2). [ 501.197589] uvcvideo: Failed to query (1) UVC control 2 (unit 2) : -110 (exp. 2). [ 501.496091] uvcvideo: Failed to query (1) UVC control 2 (unit 2) : -110 (exp. 2). [ 501.796591] uvcvideo: Failed to query (1) UVC control 2 (unit 2) : -110 (exp. 2). [ 502.096092] uvcvideo: Failed to query (1) UVC control 2 (unit 2) : -110 (exp. 2). [ 502.396094] uvcvideo: Failed to query (1) UVC control 2 (unit 2) : -110 (exp. 2). The funny thing is that this only seems to occur after a kernel update. I didn't seem to be able to replicate the problem before, but then I run an update and it installed kernel 2.6.27.8, after booting with the new kernel It just failed almost immediately (I had the camera connected). When I try to restart guvcview I get the following in dmesg: [ 913.960151] uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -110 (exp. 26). [ 914.960146] uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -110 (exp. 26). guvcview fails with "Unable to set format: 5." After replugging the camera everything seems to be working fine and I can no longer replicate this issue. This is consistent with previous kernel updates (I always have to disconnect the camera after the update). In my case it's not a big problem, I just don't understand why is this necessary. Best regards, Paulo 2008/11/12 Laurent Pinchart <[EMAIL PROTECTED]>: > Hi Paulo, > > On Wednesday 12 November 2008, Paulo Assis wrote: >> Hi, >> I've notice a similar problem with my sphere AF, >> The camera is working OK, but then the controls stop responding, video >> streaming is unaffected until I restart the app, >> after this it just fails to start, and I need to rmmod/modprobe the >> driver to get the camera working again. >> The problem is a bit random (very similar to the one caused by the >> firmware bug on my pro 5000, but not so severe), >> It seems to be triggered more easily when doing intensive control >> operations, like pan/tilt, or using the manual focus control, >> I don't use other controls that much, so I'm not sure if they also >> trigger the described error. > > Could you please check the kernel log after the problem occurred (both when > you notice that controls stop responding, and after the application failed to > restart) and report any message printed by the driver ? > > Best regards, > > Laurent Pinchart > _______________________________________________ Linux-uvc-devel mailing list [email protected] https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
