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<b><a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [GLK] no signal - with samsung 4k TV - HDMI UHD Color (ENABLED)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=110496#c24">Comment # 24</a>
on <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [GLK] no signal - with samsung 4k TV - HDMI UHD Color (ENABLED)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=110496">bug 110496</a>
from <span class="vcard"><a class="email" href="mailto:sergey79@gmail.com" title="sergey79@gmail.com">sergey79@gmail.com</a>
</span></b>
<pre>I did some more testing and I was wrong about 12-bit color. The issue is not
limited to 12-bit modes. RGB 8-bit 4k @60Hz does not work either.
Looks like the issue has something to do with the HDMI link speed. All modes
that require the link speed of > 9.0Gbps don't work.
Is it possible to force the driver to use YCbCr 422 12-bit instead of RGB 8-bit
for 24-30Hz 4K modes? This should give a better quality/less color banding when
watching videos encoded in 10-bit.</pre>
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