Arch Linux

messyidea

Member

Registered: 2017-03-02

Posts: 4

Problem of multiple monitors on wayland

Hi,
Recently I reinstalled my arch with gnome3 wayland.
Every thing seems OK except the externel display.
After I connect my display though hdmi, xrandr can not detected the new display( I found that xrandr is dropped on wayland )

My hdmi output is wired to the NVIDIA chip,
https://wiki.archlinux.org/index.php/Bu … VIDIA_chip
So I try to use intel-virtual-output but it do not help. (No VIRTUAL outputs on ":0". Maybe it relys on xrandr )

I found that after execute command as follows
```
export DISPLAY=:8
optirun glxspheres64
```
the new glxspheres64 program will show on my externel display.

Is there anyway to clone my screen to the externel display ?

Awebb

Member

Registered: 2010-05-06

Posts: 6,286

Re: Problem of multiple monitors on wayland

Doesn't Gnome have its own screen management settings?

messyidea

Member

Registered: 2017-03-02

Posts: 4

Re: Problem of multiple monitors on wayland

Doesn't Gnome have its own screen management settings?

The gnome's own screen management settings do not detected the external display.

Now I found that my dedicated gpu's display is :8 and my integrated gpu's display is :0

> > optirun xrandr -d :8
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 16384 x 16384
HDMI-0 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 509mm x 286mm
   1920x1080     60.00*+
   1600x900      60.00  
   1280x1024     75.02    60.02  
   1152x864      75.00  
   1024x768      75.03    60.00  
   800x600       75.00    60.32  
   640x480       75.00    59.94  
DP-0 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 disconnected (normal left inverted right x axis y axis)

>> xrandr -d :8
Can't open display :8

>> xrandr -d :0
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192
XWAYLAND0 connected 1920x1080+0+0 340mm x 190mm
   1920x1080     60.00*+

But I have no idea what can I do to clone my display :0 to :8.

Last edited by messyidea (2017-03-02 11:14:21)

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 21,743

Re: Problem of multiple monitors on wayland

You would essentially try to run wayland over X which I doubt is simply possible like that. I'd suggest you run GNOME on Xorg for now, or is that not possible for some reason?

messyidea

Member

Registered: 2017-03-02

Posts: 4

Re: Problem of multiple monitors on wayland

You would essentially try to run wayland over X which I doubt is simply possible like that. I'd suggest you run GNOME on Xorg for now, or is that not possible for some reason?

I can't login in gnome based on Xorg now. When I login in Xorg on gdm, screen will be black and then return to the gdm, and there is no clearly log about it.

messyidea

Member

Registered: 2017-03-02

Posts: 4

Re: Problem of multiple monitors on wayland

I reinstalled arch with xorg and xfce4, every thing is ok now