[Bug 100440] [GLK] [IGT] testdisplay -a shows corruption on HDMI 4k display
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Wed May 10 12:17:55 UTC 2017
https://bugs.freedesktop.org/show_bug.cgi?id=100440
--- Comment #32 from shashank.sharma at intel.com <shashank.sharma at intel.com> ---
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)
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