My webcam begin can work, but after about 1 minute, the webcam stop work. when skype, gtalk use webcam all have this problem. lsmod output: videobuf2_vmalloc 2469 1 uvcvideo videobuf2_memops 2283 1 videobuf2_vmalloc videobuf2_core 24073 1 uvcvideo videodev 100860 2 uvcvideo,videobuf2_core media 10406 2 uvcvideo,videodev dmesg output: [ 2379.369663] uvcvideo: Failed to resubmit video URB (-27). [ 2379.369673] uvcvideo: Failed to resubmit video URB (-27). [ 2379.369677] uvcvideo: Failed to resubmit video URB (-27). [ 2379.369681] uvcvideo: Failed to resubmit video URB (-27). [ 2379.369686] uvcvideo: Failed to resubmit video URB (-27). when i use mplayer take a photo use driver=v4l2, have a line output: v4l2: ioctl set format failed: Invalid argument v4l2: ioctl set format failed: Invalid argument v4l2: ioctl set format failed: Invalid argument How to solve this problem? thx very much.