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I have some USB Web Camera (UVC), but all of them doesn't work. Do I need to make any settings to be able to use the webcam? [ Testing environment ] Tinker board 2S (1)Debian10 v2.0.14 (2)Debian v2.1.6 I tried both OS as clean installed environment. (a)Pre-installed "Cheese" Application (b)Pre-installed "Qt V4L2 test Utility" Application [Result] (1) and (2) are same result. Normaly, /dev/video0 ~ video4 are appears. Then pluged the USB Web Camera, /dev/video5 and /dev/video6 are added. $ v4l2-ctl -d /dev/video5 -all video5 seems video device, and video6 seems other device. (a) : Shows "There wan an error playing video from the webcam" Error. Probably auto selected video0 as a default device. There should be a preferences menu in the Cheese app and can select video5, but the settings menu can't be displayed (probably a bug) (b):File > Open Device > device5, then crashed application and desktop...