Arch Linux

eugeniob

Member

Registered: 2023-07-01

Posts: 10

[SOLVED] archlinxu - xorg.conf for X11

I am using kde and X11.
I have two monitors, one connected to nvidia and one connected to built-in intel gpu. The nvidia monitor has been recognized properly, while the intel monitor is all black and when I pass the mouse, it has an X on it instead of the classic arrow. boot information and boot option are properly printed on the intel monitor, but from the login, the only monitor working is the one connected to the gpu
Below I list my configuration.

I have no kernel parameter except

 options nvidia_drm modeset=1 

I have a single xorg.conf file

Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    Screen      1  "Screen1" RightOf "Screen0"
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
EndSection

Section "Files"
EndSection

Section "InputDevice"
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/psaux"
    Option         "Emulate3Buttons" "no"
    Option         "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection

Section "InputClass"
        Identifier "keyboard"
        MatchIsKeyboard "yes"
        Option "XkbLayout" "it"
EndSection

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "Unknown"
    Option         "DPMS"
EndSection

Section "Monitor"
    Identifier     "Monitor1"
    VendorName     "Unknown"
    ModelName      "Unknown"
    Option         "DPMS"
    Option         "Rotate" "left"  # Rotating the built-in screen
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BusID          "PCI:1:0:0"
EndSection

Section "Device"
    Identifier     "Device1"
    Driver         "intel"
    BusID          "PCI:0:2:0"  # Adjust the BusID as necessary
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Section "Screen"
    Identifier     "Screen1"
    Device         "Device1"
    Monitor        "Monitor1"
    DefaultDepth    24
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Additional information

lspci | grep -i vga
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 530 (rev 06)
01:00.0 VGA compatible controller: NVIDIA Corporation GP107 [GeForce GTX 1050] (rev a1)

and

lscpu 
Architecture:             x86_64
  CPU op-mode(s):         32-bit, 64-bit
  Address sizes:          39 bits physical, 48 bits virtual
  Byte Order:             Little Endian
CPU(s):                   8
  On-line CPU(s) list:    0-7
Vendor ID:                GenuineIntel
  Model name:             Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz
    CPU family:           6

No error/warning are detected in /var/log/Xorg.0.log except  " (WW) intel(1): Option "Rotate" is not used"

and just one monitor is detected

xrandr --listmonitors 
Monitors: 1
 0: +*HDMI-0 1920/598x1080/336+0+0  HDMI-0

I have try different driver in the xorg.conf file, but I cannot understand the problem In addition to this problem, second screen is not rotated (as expected considering log warning.

Last edited by eugeniob (2024-08-08 12:49:30)

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 23,880

Re: [SOLVED] archlinxu - xorg.conf for X11

Get rid of the xorg.conf file as well as xf86-video-intel. Reboot.

eugeniob

Member

Registered: 2023-07-01

Posts: 10

Re: [SOLVED] archlinxu - xorg.conf for X11

many thanks! it was easier than expected! Just for "sport", do you have any idea why that configuration does not work?

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 23,880

Re: [SOLVED] archlinxu - xorg.conf for X11

That configuration is autocreated by nvidia-xconfig, which by default, unless you give the --prime commandline option, will make the nvidia GPU the "only" GPU. So xorg will only display on the monitor attached to the nvidia GPU. Generally speaking there's almost never a reason to run the nvidia-xconfig tool with modern xorg servers unless you need a skeleton for very specific and defined usecases, but if you know that much about how xorg configuration works, you're probably faster creating a properly defined custom one.

eugeniob

Member

Registered: 2023-07-01

Posts: 10

Re: [SOLVED] archlinxu - xorg.conf for X11

ok, crystal clear.
Many thanks