[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

Ville Syrjala <ville.syrjala at linux.intel.com> changed:

           What    |Removed                     |Added
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             Status|NEW                         |NEEDINFO

--- Comment #21 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
(In reply to Ville Syrjala from comment #20)
> (In reply to Brian Vincent from comment #18)
> > Created attachment 141780 [details]
> > dmesg on 4.15 AMDGPU machine
> > 
> > This is the dmesg on the working amdgpu machine, on a 4.15 kernel.  Let me
> > know if you would prefer to see the logs from drm-tip.
> 
> Hmm. No MST stuff in the log that I can. I guess maybe it's decided to do
> SST for whatever reason. Can't see any obvious code in amdgpu to no do MST
> though. So that's a bit mysterious.

4.15 is maybe a bit old. Can you test again with a more recent kernel on the
amdgpu machine?

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