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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [GLK] [IGT] testdisplay -a shows corruption on HDMI 4k display"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100440#c32">Comment # 32</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [GLK] [IGT] testdisplay -a shows corruption on HDMI 4k display"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100440">bug 100440</a>
from <span class="vcard"><a class="email" href="mailto:shashank.sharma@intel.com" title="shashank.sharma@intel.com <shashank.sharma@intel.com>"> <span class="fn">shashank.sharma@intel.com</span></a>
</span></b>
<pre>I was able to get this issue tested with a HDMI analyzer too.
Here are the updates:
- I was able to see the issue with the attached library too, on selected mode.
- The display never fails when using the analyzer. It only fails using real
monitor.
- Scrambling and clock high ratio is getting enabled/set/disabled properly.
- Bootup and modeset dmesg logs attached.
I think this is a fault with monitor, which is not able to handle this mode at
12BPC (Also, This mode is a non-CEA modes, so not a standard one too)</pre>
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