File intel_ipu6_isys.conf of Package ipu6-camera-hal
# Move the special isys /dev/video# node out of the way of # normal v4l2 devices such as v4l2loopback options intel_ipu6_isys video_nr=7
# Move the special isys /dev/video# node out of the way of # normal v4l2 devices such as v4l2loopback options intel_ipu6_isys video_nr=7