Re: monitor setting in gnome using new randr 1.5 option

[Bastien Nocera <hadess hadess net>]

Hey,

On Wed, 2015-11-11 at 09:50 -0500, Stephen Adler wrote:
> Guys,
>
> I have 3 MST type 4K monitor hooked up to my PC and I've been trying
> to 
> get linux to work properly and have been chopping at the bit for
> randr 
> 1.5 to come out which is supposed to solve the MST tile issue which
> 4K 
> monitors suffer from.
>
> Is there something I have to do, configure some file in /etc/
> somewhere 
> which would define which tiles make up a monitor? I'm not sure if
> there 
> is something I have to do, or if gnome is supposed to take care of
> the 
> tiling for me, by somehow defining which tiles are part of which
> monitor.
>
> to make matters worse, I have a pair of nvidia cards for which the 
> nvidia driver does not support xorg 1.18, so I had to downgrade to
> xorg 
> 1.17. In doing so, I still have randr 1.5 installed but I don't know
> if 
> randr 1.5 needs xorg 1.18 or if the two are decoupled enough so that
> I 
> can run xorg 1.17 with the nvidia driver and get the benefits of the 
> monitor features of randr 1.5.
>
> Anyone know the answer to all this? I owe you big if you do.

A question better asked on X.org mailing-lists, but if you need to use
the NVidia drivers, it'd be best to wait until they release new drivers
to avoid mix'n'matching. You can double-check the version of XRandR
supported by the server with "xrandr --version".

With XRandR 1.5, and GNOME 3.18, MST monitors should just work. If they
don't, file a bug against mutter, which handles programming the video
outputs.

Cheers