[SOLVED] Merge two displays in Wayland

tomsk · 2024-09-12 09:38:29

Hello, I use GNOME, when I run `xrandr --listmonitors` I get:

```
0: +*DP-3 1920/510x1080/290+0+0 DP-3
1: +DP-2 1280/380x1024/300+1920+0 DP-2
2: +HDMI-1 1920/600x1080/340+3200+0 HDMI-1
```

DP-3 is my primary monitor, DP-2 is my secondary monitor and HDMI-1 is my capture card, all I want is to merge (mirror) DP-3 and HDMI-1, so image from DP-3 (primary monitor) will be copied to HDMI-1 which is capture card, it was working on X11, but now I switched to Wayland, when I try to run `wlr-randr` I get: `compositor doesn't support wlr-output-management-unstable-v1`

In other words mirror DP-3 with HDMI-1 and extend DP-2.
It is working under X11 using this command: `xrandr --output DP-3 --same-as HDMI-1 --output DP-2`

I know Mutter doesnt have support of wlroots, but Im looking for some solution, because I would like to switch to Wayland.

Stats:

OS: Arch Linux x86_64
Kernel: 6.10.9-zen1-2-zen
Uptime: 15 mins
Packages: 4257 (pacman), 81 (flatpak)
Shell: zsh 5.9
Resolution: 1920x1080, 1280x1024, 1920x1080
DE: GNOME 46.4
WM: Mutter
WM Theme: WhiteSur-Light
Theme: WhiteSur-Light-solid [GTK2/3]
Icons: WhiteSur-dark [GTK2/3]
Terminal: WarpTerminal
CPU: AMD Ryzen 5 4500 (12) @ 4.208GHz
GPU: NVIDIA GeForce GTX 1060 6GB
Memory: 5862MiB / 31887MiB

Last edited by tomsk (2024-09-12 14:27:43)

V1del · 2024-09-12 10:26:07

There's no "Wayland" in this regard and this is dependant on mutters implementation, so check your GNOME system settings. If you want to script this for some reason, there's https://aur.archlinux.org/packages/gnome-randr-rust

tomsk · 2024-09-12 12:55:54

I dont need script for it, I would like to do it in GNOME System settings too, but I dont know how, so I always used xrandr.

that gnome-randr has some weird, non-standard syntax, I dont know how to use it, I tried to use syntax which uses xrandr with no success:

╰─ gnome-randr --list-monitors
─╯
error: Found argument '--list-monitors' which wasn't expected, or isn't valid in this context

USAGE:
    gnome-randr [SUBCOMMAND]

For more information try --help
╭─ ~                                                                                                                                  1 ✘  15:08:55 ─╮
╰─ gnome-randr --output DP-3 --same-as HDMI-1 --output DP-2
─╯
error: Found argument '--output' which wasn't expected, or isn't valid in this context

USAGE:
    gnome-randr [SUBCOMMAND]

For more information try --help

--help tells nothing usefull, it doesnt work even when I try to run it like `gnome-randr modify --output DP-3 --same-as HDMI-1 --output DP-2`

Last edited by tomsk (2024-09-12 13:11:14)

V1del · 2024-09-12 14:04:46

I don't use GNOME, but I've found https://forum.manjaro.org/t/mirror-scre … me/85000/9 which suggests that this would technically be possible but you need to manually edit the monitors.xml to set this up. Seeing as this was "just" 3 years ago and GNOME being GNOME I'd strongly suspect you still need to do it that way.

Yeah... https://gitlab.gnome.org/GNOME/gnome-co … ssues/3126 -- but see the comment there, there's another cmdline utility that might help.

Last edited by V1del (2024-09-12 14:08:36)

tomsk · 2024-09-12 14:26:58

V1del wrote:

I don't use GNOME, but I've found https://forum.manjaro.org/t/mirror-scre … me/85000/9 which suggests that this would technically be possible but you need to manually edit the monitors.xml to set this up. Seeing as this was "just" 3 years ago and GNOME being GNOME I'd strongly suspect you still need to do it that way.
Yeah... https://gitlab.gnome.org/GNOME/gnome-co … ssues/3126 -- but see the comment there, there's another cmdline utility that might help.

THANK YOU very much, I managed to set it like: `./gnome-monitor-config set -Lp -M DP-3 -M HDMI-1 -x 0 -y 1000 -L -M DP-2 -x 1920 -y 0`

and it works now as intended

I hope GNOME will fix this issue somehow, so I dont have to do it using cli

Arch Linux

#1 2024-09-12 09:38:29

[SOLVED] Merge two displays in Wayland

#2 2024-09-12 10:26:07

Re: [SOLVED] Merge two displays in Wayland

#3 2024-09-12 12:55:54

Re: [SOLVED] Merge two displays in Wayland

#4 2024-09-12 14:04:46

Re: [SOLVED] Merge two displays in Wayland

#5 2024-09-12 14:26:58

Re: [SOLVED] Merge two displays in Wayland

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