Hi, 2011/3/6 Laurent Pinchart <laurent.pinch...@ideasonboard.com>:
> Could you please send me the output of > > lsusb -v -d 045e:076d > > (running as root if possible) ? Gzipped file attached. > Looks like the webcam has been designed by yet another brain-dead developer. > *sigh* :-( Or maybe they have crippled it for a purpose. > What are the minimum, maximum, default and step values reported by the driver > when you query the exposure control ? > Output of v4l2-ctl -l: brightness (int) : min=30 max=255 step=1 default=133 value=153 contrast (int) : min=0 max=10 step=1 default=5 value=5 saturation (int) : min=0 max=200 step=1 default=83 value=83 white_balance_temperature_auto (bool) : default=1 value=1 power_line_frequency (menu) : min=0 max=2 default=2 value=1 white_balance_temperature (int) : min=2800 max=10000 step=1 default=4500 value=3935 sharpness (int) : min=0 max=50 step=1 default=20 value=50 backlight_compensation (int) : min=0 max=10 step=1 default=0 value=0 exposure_auto (menu) : min=0 max=3 default=1 value=3 exposure_absolute (int) : min=5 max=20000 step=1 default=156 value=156 focus_absolute (int) : min=0 max=40 step=1 default=0 value=0 focus_auto (bool) : default=0 value=1 zoom_absolute (int) : min=0 max=10 step=1 default=0 value=0 As a side note, this webcam doesn't support all exposure_auto values. Output from guvcview, when trying out all modes: checking format: 1196444237 VIDIOC_G_COMP:: Invalid argument compression control not supported vid:045e pid:076d driver:uvcvideo VIDIOC_S_CTRL - Unable to set control: Input/output error Exposure, Auto change to 0 failed hardware value is 3 VIDIOC_S_CTRL - Unable to set control: Input/output error Exposure, Auto change to 2 failed hardware value is 1 Hope this helps. Regards, Jani
lsusb.gz
Description: GNU Zip compressed data
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