Comment 98 for bug 120434

Yeah, sounds like the module isn't getting inserted into the kernel again, which is, well, very odd by itself, heh.
However, the loader reports an error if it gets a non-zero return code when it reloads uvcvideo, so if it failed or didn't exist it would bail. We shall soon see, I guess.

GeorgeV, the output of lsmod and what /dev/video nodes you have (if any) would probably also be useful.