Arch Linux

Arthur.G.X.Y

Member

Registered: 2022-05-18

Posts: 3

Dual Screen Not working after updating KDE

The physical connection, graphics card are fine, there's no problem on my dual boot windows, however the screen is not responding like normal. I can move my mouse over to the other screen (it's on after I force enabled it in nvidia-settings) but I cannot do anything like dragging a window over there, and the mouse looks like a "X" on that screen. And the screen stucks on the KDE launch animation.

Before I force enabled the screen, it appears in the KDE settings -> Display and monitor but enabling it didn't take any effect. Now after the force enable, it cannot be detected anymore on the physical HDMI port. However on a type-C dock's HDMI the screen can be auto detected and manually enabled. And last time I boot the machine, my main screen was like that also and I cannot do anything until I rebooted.

How can I debug this?

Below is my /etc/x11/xorg.conf content

# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 520.56.06

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

    # HorizSync source: edid, VertRefresh source: edid
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "BOE Technology Group Co., Ltd"
    HorizSync       286.0 - 286.0
    VertRefresh     60.0 - 165.0
    Option         "DPMS"
EndSection

Section "Monitor"

    # HorizSync source: edid, VertRefresh source: edid
    Identifier     "Monitor1"
    VendorName     "Unknown"
    ModelName      "GBT AORUS AD27QD"
    HorizSync       30.0 - 222.0
    VertRefresh     48.0 - 144.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "NVIDIA GeForce RTX 3070 Laptop GPU"
    BusID          "PCI:1:0:0"
    Screen          0
EndSection

Section "Device"
    Identifier     "Device1"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "NVIDIA GeForce RTX 3070 Laptop GPU"
    BusID          "PCI:1:0:0"
    Screen          1
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "Stereo" "0"
    Option         "nvidiaXineramaInfoOrder" "DFP-5"
    Option         "metamodes" "DP-4: 2560x1600_165 +0+0"
    Option         "SLI" "Off"
    Option         "MultiGPU" "Off"
    Option         "BaseMosaic" "off"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Section "Screen"
    Identifier     "Screen1"
    Device         "Device1"
    Monitor        "Monitor1"
    DefaultDepth    24
    Option         "Stereo" "0"
    Option         "metamodes" "HDMI-0: nvidia-auto-select +0+0 {AllowGSYNC=Off}"
    Option         "SLI" "Off"
    Option         "MultiGPU" "Off"
    Option         "BaseMosaic" "off"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,261

Re: Dual Screen Not working after updating KDE

The behaviour you describe is generally expected with that kind of confiugration. Remove that xorg.conf restart Xorg/recheck behaviour, in doubt post your /var/log/Xorg.0.log after doing so and

sudo journalctl -b

https://wiki.archlinux.org/title/List_o … n_services also please use [ code ] [ /code ] tags for pasting outputs and/or read the link for how to post outputs to a pastebin.

Last edited by V1del (2022-10-20 12:34:47)