Could you boot with linux kernel parameter radeon.dpm=1 and attach dmesg output after playing some video? With the kernel parameter it logs more information about dynamic power management of the graphics card.
Thanks, Andreas On Fri, Oct 23, 2015 at 03:05:22AM +0300, Артём Банщиков wrote: > Recently (possibly, after updating linux-image to version 4.2.3-2) behavior > changed a bit. > Sometimes video is played plays very slowly like it used to before, > but sometimes it is played with normal speed and after few seconds screen > is > filled with blue and white squares. This effect stays even if I turn to tty > from X.org.
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