[Intel-gfx] force yuv 4:2:0 output

[Jani Nikula]

On Mon, 18 Sep 2017, Wolfgang Haupt <haupt.wolfgang at gmail.com> wrote:
> Hello everyone,
>
> recently I played around with my kabylake i5 nuc box and found that on some
> TV's
> the screen stays black as soon as I go to 4k at 60.
> The TV only accepts 4k at 60 at yuv 4:2:0 (I also saw hdmi range extenders and
> stuff that don't support yuv 4:4:4 on 4k at 60).
> I tried to force limited mode through xrandr or by overriding the edid
> information, but nothing worked so far.
> Now I wonder if there is a way to force yuv 4:2:0 ouptut on the kernel
> level.
> Thanks.

Please try v4.14-rc1.

BR,
Jani.


-- 
Jani Nikula, Intel Open Source Technology Center