Arch Linux

user456132

Member

Registered: 2022-08-01

Posts: 14

KDE fails to start when there is a Device section in xorg.conf

Hello, guys!
I have arch linux with KDE desktop and SDDM display manager.
I've installed nvidia proprietary driver. (nvidia-open package).
I generated a xorg configuration using nvidia-xconfig.
When I run the system it won't start the graphical interface and the boot process is stuck at message "Reached target Graphical Interface".
I figured out that when I delete the while /etc/X11/xorg.conf file or delete the "Device" section from it, KDE starts working as expected.
Then I tried the minimal xorg.conf configuration from arch wiki https://wiki.archlinux.org/title/NVIDIA … figuration.
The same result. KDE doesn't start until I delete the "Device" section.

xorg.conf generated by nvidia-xconfig:

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

Section "Files"
EndSection

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

Section "InputDevice"
    # generated from default
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection

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

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

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

What may cause the problem?
Thanks in advance!

Scimmia

Fellow

Registered: 2012-09-01

Posts: 13,729

Re: KDE fails to start when there is a Device section in xorg.conf

Why are you generating an xorg.conf at all? What are you trying to accomplish?

user456132

Member

Registered: 2022-08-01

Posts: 14

Re: KDE fails to start when there is a Device section in xorg.conf

Why are you generating an xorg.conf at all? What are you trying to accomplish?

I need to set some Option in the device section, so I need the device section, but when I add it, GUI stops working.
And I thought the xorg.conf file is needed for xorg to work? Or is it optional?

Scimmia

Fellow

Registered: 2012-09-01

Posts: 13,729

Re: KDE fails to start when there is a Device section in xorg.conf

xorg.conf hasn't been required for many, many years now.

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 77,223

Re: KDE fails to start when there is a Device section in xorg.conf

I need to set some Option in the device section

be more specific about that and post the xorg log of a successfull boot sequence.
https://wiki.archlinux.org/title/Xorg#General

Chances are, you've an optimus system and the nvidia chip is deactivated, late or doesn't have any outputs attached when trying to start the server.

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