On Sun, May 11, 2008 at 3:16 AM, Laurent Pinchart <[EMAIL PROTECTED]> wrote: > Hi Dan, > > > On Friday 09 May 2008, Dan McGee wrote: > > I'm seeing this same problem on the Eee PC with the integrated webcam. > > Running an strace on the luvcview process shows it coming to a halt on > > the following: > > ioctl(5, VIDIOC_STREAMON, 0x77eede58) = 0 > > ioctl(5, VIDIOC_DQBUF > > > > and stays there. > > > > I attempted to track down when this problem started occurring and why, > > but I couldn't figure out the why. I know I had a setup where > > everything was working with a near-vanilla 2.6.25 kernel and > > linux-uvc-svn version 205. The problem started when I compiled > > 2.6.25.1 and bumped to SVN revision 207. I attempted to drop back down > > to 205 and the problem was still occurring. Doh! I thought I had been dropping down to 205, futher inspection tells me my build script was always pulling the head revision. Answers are below.
> > Looking through the kernel > > changelog from .25 to .25.1 didn't turn up anything obvious as to what > > changed causing it to fail. > > I'm pretty surprised that the upgrade from .25 to .25.1 alone caused the > problem. > > Could you please retry with r206 and r207 and compare the results ? r207 > introduces a patch to drop incomplete frames. Check the kernel log to make > sure the right driver gets loaded (it should print the SVN revision number > when loaded). > > If reverting to r206 helps, I'll ask you to try a patch to get more > information about the issue. The 206 -> 207 transition is in fact what broke it. I'd be happy to test out any patches you want me to try to help debug this issue. Commenting out the changes from that revision in linux-uvc/trunk/uvc_v4l2.c and then compiling the current revision (209) also solves the problem, as drop_incomplete will never get set. For this camera, the only output format supported is yuv if that helps at all, or is a possible configuration that did not get tested. -Dan _______________________________________________ Linux-uvc-devel mailing list [email protected] https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
