I have two computers, one a laptop and one a desktop, both running fully updated Kubuntu Maverick (10.10). Both are 64-bit machines. On both I have installed and activated the v4l repository. Each machine has two webcams, one of which I've been moving back and forth between the machines. That webcam shows up on each machine under lsusb with id 058f:3820 (Alcor Micro).
Here's the mystery: the webcam I'm swapping back and forth produces an image under cheese on the laptop but not on the desktop. On each machine the other webcam works correctly and produces an image. On the desktop I get no error messages, but only a black image from the Alcor webcam.
What could possibly account for this?
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