Hi, I've set a workaround for uvcvideo buggy behaviour, I just set the buffer length to the maximum value if bytesused is zero. Anyway this is clearly a bug in uvcvideo since it violates the v4l2 api: http://linuxtv.org/downloads/v4l-dvb-apis/buffer.html
You should be able to upgrade from my testing ppa in a few moments (build pending). Regards, Paulo 2014-09-30 9:28 GMT+01:00 Paulo Assis <pj.as...@gmail.com>: > OK, so this was already reported: > > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1362358 > > Regards, > Paulo > > 2014-09-30 9:24 GMT+01:00 Paulo Assis <pj.as...@gmail.com>: >> Hi, >> So I was finally able to test this in both 32 and 64 bit kernels and >> while the gspca driver works fine on both (eye toy 2 camera), uvcvideo >> (logitech c930e) fails on both kernels, increasing the driver >> verbosity I get: >> EOF on empty paylod >> this is consistent with the zero size frames I'm getting in guvcview. >> >> So I would say this is definitly a driver issue, I'll try to install >> the latest media tree to check if this fixes things: >> http://git.linuxtv.org/cgit.cgi/media_build.git/about/ >> >> I think a bug report should be filed against the current ubuntu 14.10 >> kernel, referring the uvcvideo issues. >> >> Regards, >> Paulo >> >> 2014-09-29 17:26 GMT+01:00 Alberto Salvia Novella <es204904...@gmail.com>: >>> ** Attachment added: "stderr.txt" >>> >>> https://bugs.launchpad.net/ubuntu/+source/guvcview/+bug/1373221/+attachment/4219301/+files/stderr.txt >>> >>> -- >>> You received this bug notification because you are subscribed to the bug >>> report. >>> https://bugs.launchpad.net/bugs/1373221 >>> >>> Title: >>> guvcview crashed with SIGSEGV in get_ctrl_by_id() >>> >>> To manage notifications about this bug go to: >>> https://bugs.launchpad.net/guvcview/+bug/1373221/+subscriptions -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1373221 Title: guvcview crashed with SIGSEGV in get_ctrl_by_id() To manage notifications about this bug go to: https://bugs.launchpad.net/guvcview/+bug/1373221/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs