Comment # 2 on bug 1180780 from Libor Pechacek

Ah, you are right. It's all my fault. :)

I'm using the loopback video device and only recently I configured the system
to load the module on boot. That resulted in renumbering of the available video
devices, where the loopback is now the first (video0), and not the last
(video4) as it used to be. Apologies for the noise and thanks for your help!