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

[Wolfgang Haupt]

Done.
https://bugs.freedesktop.org/show_bug.cgi?id=102928

Let me know if I miss anything or you need me to do more tests.

BR,
Wolfgang

Jani Nikula <jani.nikula at linux.intel.com> schrieb am Do., 21. Sep. 2017 um
10:14 Uhr:

>
> On Wed, 20 Sep 2017, Wolfgang Haupt <haupt.wolfgang at gmail.com> wrote:
> > I've tried v4.14-rc1.
> > Now I do not have 4k at 60 anymore.
>
> Okay, please file a bug at
> https://bugs.freedesktop.org/enter_bug.cgi?product=DRI&component=DRM/Intel
>
> > dmesg with drm.debug:
> > http://sprunge.us/TKbO
>
> Attach dmesg all the way from boot to the bug please.
>
> BR,
> Jani.
>
> >
> >
> > Best Regards,
> > Wolfgang
> >
> > Jani Nikula <jani.nikula at linux.intel.com> schrieb am Di., 19. Sep. 2017
> um
> > 12:08 Uhr:
> >
> >> 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
> >>
>
> --
> Jani Nikula, Intel Open Source Technology Center
>
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