[Nouveau] [Bug 73770] [NVD9] nouveau doesn't setup 1920x1200 mode on HDMI properly

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=73770

--- Comment #5 from Ilia Mirkin <imirkin at alum.mit.edu> ---
(In reply to comment #4)
> I run: xrandr --output DP-1 --set "scaling mode" "None"
> 
> This workarounds the problem, thanks.
> 
> It's still scaled wrongly in VT and I have to run it every time I boot.
> 
> 1) Can I add this workaround in kernel cmd line?

Well, I think xrandr just manipulates the KMS property. You can do this
yourself as well. The only tool I know of that lets you do this is the
"modetest" tool that's in the tests dir of drm, but perhaps there are others.
Perhaps there's also a way to set that as a default via video= or something
like that, but I'm not aware of anything specific.

> 
> 2) Could you fix it properly in nouveau driver to make it scaling right by
> default?

I believe that the current policy was deemed to be the correct one. I don't
really know the details of the various situations though. I believe the
implication of the EDID is that it's really a natively 1920x1080 monitor, so we
should scale for any other resolution. However, again, I'm a little weak on the
specifics. You might try asking in #nouveau or #xorg on freenode.

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