[Bug 108081] LG 31MU97 monitor native resolution is 4096x2160, but highest mode found is 3840x2160

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108081

--- Comment #12 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
(In reply to Brian Vincent from comment #11)
> I've attached the dmesg you asked for, on the new kernel with the patch,
> plus i915.enable_dp_mst=0.  I've also attached the new EDID.  Now that I
> look at it closer, there is another difference.  The number of extensions is
> 1 instead of 2, and the checksum is different.

Yeah. No indication in the logs that anything went wrong. So I guess the
monitor just doesn't care to include the second extension block in SST mode.

So it would appear that only real mystery is why the second extension block
read doesn't give us sensible data in MST mode. Since the no_stop_bit fix
didn't help I'm out of good ideas for now.

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