https://bugs.freedesktop.org/show_bug.cgi?id=70934
--- Comment #3 from Rafał Miłecki zajec5@gmail.com --- Created attachment 88202 --> https://bugs.freedesktop.org/attachment.cgi?id=88202&action=edit Colors OK on TV
In case of TV connected with HDMI a simple xrandr --output HDMI-0 --off xrandr --output HDMI-0 --auto fixed the problem. There weren't any problems with colors after that. Even gradients were OK (looks like TV is working in 24b mode). That white horizontal stripes are result on my poor camera only. Screen on this photo was perfect.