How to configure two screens xorg.conf and amdgpu?

Carlosk465 · Tux's lil' helper Joined: 29 May 2022 Posts: 78

I know they say that xorg.conf is no longer used, but kscreen doesn't save the configuration of two screens and sometimes when I turn off a screen it doesn't recognize it again, so I've been trying to create a configuration for xorg.conf (actually in xorg. cong.d but for simplicity I'll put it all together) but it just ignores it.

Things like this happen, it doesn't recognize the other screen but it looks the same, I want to put the screen that looks black on the left.[/code]
https://i.postimg.cc/9fN5Kkgd/Screenshot-20230815-211504.png

Before I had an xorg.conf that I created with nvidia and now with amd this is new to me.

xorg.conf

Carlosk465 · Tux's lil' helper Joined: 29 May 2022 Posts: 78

↓↓↓↓ log xorg ↓↓↓↓

NeddySeagoon · Posted: Fri Aug 18, 2023 4:52 pm Post subject:

Carlosk465,

A few things ... The Identifiers cat be any string you like. Xorg uses them to assemble the ServerLayout.

It a good Idea to stay away from the Identifiers that Xory uses by default.
You should not need to give BusID "PCI:... asyou only have a singe GPU. The log shows it at

Carlosk465 · Tux's lil' helper Joined: 29 May 2022 Posts: 78

Here it is, I didn't know how to put it all :lol:

https://pastebin.com/Qbjknn8c

Ralphred · Guru Joined: 31 Dec 2013 Posts: 574

You *can* do it the way you are doing it, but it results in a quite a severe performance loss, as you effectively force X to split the card in two, then recombine it unnecessarily, and you need some extra config to go full "old school".

Carlosk465 · Tux's lil' helper Joined: 29 May 2022 Posts: 78

How can I use another identifier and tell it what screen it is? I want it to be called Monitor0 and Monitor1

NeddySeagoon · Posted: Fri Aug 18, 2023 7:55 pm Post subject:

Carlosk465,

Identifiers must be unique in Section types and are used for two things

1. by Xorg to assemble the Server Layout by following the trail of Identifiers to the various sections.
2. by the system admin to work out what is actually happing.

If you choose to use unique Identifiers within your xorg.conf tree, changing one is a matter of find/replace all in your $EDITOR

Identifiers have no meaning to Xorg.

Its a bad idea to attempt to reuse default Identifiers as if a default is defined after your Section, your section definition will not be used.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

Carlosk465 · Tux's lil' helper Joined: 29 May 2022 Posts: 78

Try to change DVI-D-0 and HDMI-A-1 to something else and it doesn't work

Carlosk465 · Tux's lil' helper Joined: 29 May 2022 Posts: 78

I thought that the problem of the image that I put above had been solved, now I have the screen where I wanted but when I start a game that suspends the composer, it stops recognizing the screen and it is seen with a black background, but I can still put a window with the only one detail that the floating menus appear on the edge of the other screen.

I have been testing wayland and I have some questions, how can you transfer the configuration from xorg to wayland? although it seems that it reads the xorg.conf file because it maintains the position of the screens. I also have a problem with this, only when I turn off the screen it never appears again.