Builtin webcam does not work on Ubuntu 22.04
I am using Ubuntu 22.04 LTS on a dell precision 3570 laptop with builtin webcam. I have also connected an external usb logitech c270 webcam:
$ lsusb | grep Webcam
Bus 001 Device 003: ID 0c45:6a14 Microdia Integrated_Webcam_HD
Bus 001 Device 015: ID 046d:0825 Logitech, Inc. Webcam C270
When starting cheese with the builtin webcam
$ cheese --device=/dev/video0
it just shows a black screen and no error messages. So this does not work at all. But I know the webcam is working since I have done microsoft team meeting and it worked there.
When starting cheese with the other c270 webcam it shows images but the update rate is too slow, the following error messages are shown in the terminal window:
$ cheese --device=/dev/video2
../src/intel/isl/isl.c:2216: FINISHME: ../src/intel/isl/isl.c:isl_surf_supports_ccs: CCS for 3D textures is disabled, but a workaround is available.
(cheese:253152): cheese-WARNING **: 12:11:34.833: A lot of buffers are being dropped.: ../libs/gst/base/gstbasesink.c(3143): gst_base_sink_is_too_late (): /GstCameraBin:camerabin/GstViewfinderBin:vf-bin/ClutterGstVideoSink:cluttergstvideosink0:
There may be a timestamping problem, or this computer is too slow.