On 12/03/2021 05:24, Paul Smith wrote:
---------------------------------------
#  v4l2-ctl -l
User Controls

                     keep_format 0x0098f900 (bool)   : default=0 value=0
               sustain_framerate 0x0098f901 (bool)   : default=0 value=0
                         timeout 0x0098f902 (int)    : min=0 max=100000
step=1 default=0 value=0
                timeout_image_io 0x0098f903 (bool)   : default=0 value=0
#
---------------------------------------

I have only one webcam. But I am using a virtual camera via OBS Studio.

AFAIK, the v4l2-ctl command gets its information from the device and/or driver 
in use by the device.

Do you know if the loss of focus_auto happen recently?  If so, try booting to a 
previous kernel to see
if a kernel change may have triggered it.

FWIW, the webcam of my laptop has ceased working.  Old age.  And I only have a 
USB Capture HDMI
device on my desktop that does create both a /dev/video0 and /dev/video1.

--
People who believe they don't make mistakes have already made one.

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