Camera black on the HP EliteBook 845 G8 Notebook PC (Qualcomm WiFi) (202206-30368)

Asked by Thibault Ferrante

The integrated webcam does not work on Ubuntu 25.04 with kernel 6.14.0-29-generic.
Cheese, Camera app, and ffplay all show a black screen.
The uvcvideo module is loaded, but no video stream is decoded.
When I cover the webcam with my finger, the placeholder disappears, so the hardware is functioning.

For more details, see https://bugs.launchpad.net/bugs/2124214

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