Created attachment 599955 [details] Kernel panic screen Description of problem: ASRock A75M, A8-3870K (Radeon HD 6550D). Sometimes I get random kernel panics. It doesn't matter if I'm watching a movie or listening to music, it may even happen when the screen is locked. I'm pretty sure that the problem is in the driver, because when I use Catalyst (or Windows), everything works fine. Sorry for my English.