<div dir="ltr">I've tried v4.14-rc1.<div>Now I do not have 4k@60 anymore.</div><div><br></div><div>dmesg with drm.debug:</div><div><a href="http://sprunge.us/TKbO">http://sprunge.us/TKbO</a><br></div><div><br></div><div><br></div><div>Best Regards,</div><div>Wolfgang</div></div><br><div class="gmail_quote"><div dir="ltr">Jani Nikula <<a href="mailto:jani.nikula@linux.intel.com">jani.nikula@linux.intel.com</a>> schrieb am Di., 19. Sep. 2017 um 12:08 Uhr:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Mon, 18 Sep 2017, Wolfgang Haupt <<a href="mailto:haupt.wolfgang@gmail.com" target="_blank">haupt.wolfgang@gmail.com</a>> wrote:<br>
> Hello everyone,<br>
><br>
> recently I played around with my kabylake i5 nuc box and found that on some<br>
> TV's<br>
> the screen stays black as soon as I go to 4k@60.<br>
> The TV only accepts 4k@60 at yuv 4:2:0 (I also saw hdmi range extenders and<br>
> stuff that don't support yuv 4:4:4 on 4k@60).<br>
> I tried to force limited mode through xrandr or by overriding the edid<br>
> information, but nothing worked so far.<br>
> Now I wonder if there is a way to force yuv 4:2:0 ouptut on the kernel<br>
> level.<br>
> Thanks.<br>
<br>
Please try v4.14-rc1.<br>
<br>
BR,<br>
Jani.<br>
<br>
<br>
--<br>
Jani Nikula, Intel Open Source Technology Center<br>
</blockquote></div>