https://bugzilla.kernel.org/show_bug.cgi?id=75591

I had problems with uvc with the linux-3.15 kernel, all rc's When uvc is added I have problems with pulse audio that prevents firefox from functioning. disabling pulse audio allows firefox to work properly. on shut down and reboot watchdog does not stop and systemd says it cannot unmount some directorys. With uvc removed all works as they should.