Arch Linux

xyz987

Member

Registered: 2023-10-12

Posts: 8

dual same model graphic card and dual monitor only one can work

Hi every one:

I have two same model gpu, want to show on different monitor,  but it only work on one.
I refer this page  https://bbs.archlinux.org/viewtopic.php?id=235565  , to  add some thine in  /etc/X11/xorg.conf.d  ,  like add  10-monitor.conf & 20-intel.conf
But, it only work one one.
I try to install Ubuntu & manjaro,  only manjaro at install moment was work on dual gup & dual monitor,  but install finish then restart manjaro only work single.
Arch: LXDE &  Xfce
Manjaro:  KDE Plasma  & Xfce

But windows can work normal in dual gpu & monitor.

lspci VGA like list:
03:00.0 VGA compatible controller: Intel Corporation DG1 [Iris Xe Graphics] (rev 01)
09:00.0 VGA compatible controller: Intel Corporation DG1 [Iris Xe Graphics] (rev 01)

10-headless.cof like list:
Section "Device"
    Identifier             "Screen0"
    Driver                 "intel"
    BusID                  "PCI:3:0:0"
EndSection

Section "Device"
    Identifier             "Screen1"
    Driver                 "intel"
    BusID                  "PCI:9:0.0"
EndSection

10-monitor.conf  like list :
Section "Monitor"
    Identifier             "DP-1"
    Option      "Primary" "true"
EndSection

Section "Monitor"
    Identifier             "HDMI-1-2"
    Option      "LeftOf" "DP-1"
EndSection

20-intel.conf like list:
Section "Device"
        #Identifier "Screen0"
        Identifier "Intel Graphics"
        Driver "intel"
        BusID "PCI:3:0:0"
        #Option "TearFree" "true"
EndSection

Section "Device"
        #Identifier "Screen1"
        Identifier "Intel Graphics"
        Driver "intel"
        BusID "PCI:9:0:0"
        #Option "TearFree" "true"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "HDMI-1-2"
EndSection

Section "Screen"
    Identifier     "Screen1"
    Device         "DP-1"
EndSection

Last edited by xyz987 (2025-01-15 00:22:11)

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 23,897

Re: dual same model graphic card and dual monitor only one can work

Drop xf86-video-intel, that card is too new to be supported by it (and replace mentions of Driver "intel" with Driver "modesetting"), as well as this configuration in general, autoconfig will likely set this up correctly without you trying these shenanigans, that said.... what's your use case? SLI configs are dead, and you can likely avoid many gotchas and headaches by simply using one GPU (or at least simply using one GPU for display and maybe another for compute/AI or whatever)

Last edited by V1del (2025-01-15 11:28:38)