Hi Aurel, On Friday 18 January 2008, Aurel Gabris wrote: > Hello Laureant, > > Thanks for the quick reaction. (Although I had to read it off the web > archives: your ISP is being blocked at our site.) > > I have produced some logs when passing "trace=0xff" to the module on the > command line. It's got very long, and I don't know what may be interesting > and what not. Therefore instead of attaching it the e-mail I've made it > available at http://optics.szfki.kfki.hu/~gabrisa/outgoing/syslog-04f2:b021 > > The logs were recorded when I was using luvcvideo and trying to use amsn. > > Amsn was runnig in the interval: 14:45:27 -> 14:45:46 > ending up with these errors: > ioctl: VIDIOC_S_CTRL(id=9963776;value=25536): Input/output error > ioctl: VIDIOC_S_CTRL(id=9963777;value=32768): Input/output error > Not a JPEG file: starts with 0x3a 0xd7 > Oops: malloc_video_bufs is 1 (expected 0) > [utils/linux/capture/libng/grab-ng.c:malloc_bufs_check:235] > Oops: processes is 1 (expected 0) > [utils/linux/capture/libng/convert.c:process_check:179] > > > Luvcvideo was running within 3 intervals: 14:44:47 -> 14:44:51, 14:46:05 > -> 14:46:08, and for a while in the begining but I forgot to document it > I was getting the error: "hmm FW error,not seq DCT ??" > for apparently every frame. > Further, the output JPEGS have "Invalid SOS parameters for sequential > JPEG" > > > I tried to remove all other messages from the syslog, however, I had the > old webcam plugged in, and that generated some v4l messages also. > > One more thing that just came into my mind: I have disabled the ehci > module in the kernel as it was causing problems with the old webcam. > > I hope you can figure out what is the problem here...
It seems many USB packets are dropped. You should load the ehci module and plug the webcam in a root USB port if it's currently plugged in a USB hub. Best regards, Laurent Pinchart _______________________________________________ Linux-uvc-devel mailing list [email protected] https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
