Patrick Lists wrote: > On 07/17/2013 05:40 PM, m.roth at 5-cent.us wrote: > [snip] >> Which gspca driver is installed (lsmod | grep gspca)? And it might >> require exporting LD_PRELOAD with v4lcompat.so or v4l2convert.so. > > It's the gspca_vc032x module. LD_PRELOADING either lib did not make a > difference and Cheese spits out an internal data flow error when started > from the CLI. Have you tried with mplayer? Do the export, then: mplayer tv:// -tv driver=v4l2:device=/dev/video0:width=320:height=240 and see what you see. The idea is to try a different viewer. > >>From digging in my mail archives the error in /var/log/messages was: > Jan 3 17:37:10 luna kernel: [ 7358.087971] gspca: ISOC data error: [62] > len=0, status=-71 > > That was on Fedora 14 with kernel 2.6.35.10-74.fc14.x86_64 and the id of > the webcam is: Logitech Orbicam 046d:0896 > > The patch that fixed it is: > > $ cat gspca-sensor.patch > diff -uNr gspca-2.13.3.org/build/vc032x.c gspca-2.13.3/build/vc032x.c > --- gspca-2.13.3.org/build/vc032x.c 2011-01-15 09:46:40.000000000 +0100 > +++ gspca-2.13.3/build/vc032x.c 2011-07-28 18:16:41.138640918 +0200 > @@ -3716,9 +3716,9 @@ > > sensor = vc032x_probe_sensor(gspca_dev); > //vish > -// if (sd->sensor == SENSOR_POxxxx > -// && sensor == SENSOR_PO3130NC) > -// sensor = sd->sensor; > + if (sd->sensor == SENSOR_POxxxx > + && sensor == SENSOR_PO3130NC) > + sensor = sd->sensor; > > switch (sensor) { > case -1: Hmmmm, I'm a bit confused: it looks as though the commented out lines are identical to the new lines; and as there's no + in front of it, it looks as though the statement to set sensor was there before... so I don't get the difference. I do get the logic: probe the sensor, and if it says it's this, then reset it to that. mark