Re: [OT]Dual GPU - help on the way

On Fri, 2 Jul 2021 15:52:12 +0200, Per olof Ljungmark <[email protected]>
wrote:

> Slightly frustrated I'm asking on this list.
> 
> The setup is HP Z620 with dual Nvidia K2000 and three monitors, the
> aim is to have the desktop (xfce4) extended to all three.
> 
> It should be doable with this setup but so far all efforts failed.
> 
> With a "standard" xorg.conf, I get the desktop on monitor 1 and 2,
> the third is a black screen but I can move the pointer into it.
> 
> Alternatively I could run another X session on X screen 1 instead of 
> extending the desktop.
> 
> Help welcome!
> 
> Thank you in advance,
> Per
>

Hi,

I have zero experience with Nvidia, but I use some devices with
multiple video outputs - board with VGA + DVI or VGA + HDMI, mostly
Intel video. In my case crucial was right use of xrandr, example:

xrandr --output DVI-D-1 --auto
xrandr --output VGA-1 --auto
xrandr --output VGA-1 --left-of DVI-D-1

While this could not be answer for you, I'd recommend running

xrandr

with no option, just to see if it offers any usefull info.

In any case, I'd like to know how you are using XFCE in multi-monitor
scenario.

Regards,
Milan