KDE - Mouse is visble on all screens, but no windows or background.

taxane · 2021-01-01 09:44:12

Hello,

New to Arch. I've got xorg and kde up and running, but I only have 1 monitor that I can fully interact on. I can see windows, backgrounds, mouse, etc... My other two monitors only show my mouse cursor. If I right click and move the mouse cursor down a bit, I can access the desktop and wallpaper settings.

Things I have tried:
Removed and reinstalled: plasma kde-applications xorg-xrandr
Followed the multihead instructions for nvidia on the wiki
Installed arandr - But, I have an issue where arandr and xrandr return an error "RandR extension missing"
Tried to adjust displays with Kscreen - Kscreen says that "No KScreen backend found, please check your KScreen installation."
Edited my xorg.conf and .xinitrc with suggestions from the wiki.
Used nvidia-settings to modify xorg.conf, rebooted and no change.

Any help would be appreciated! If any other files would clarify settings, please let me know.

/etc/X11/xorg.conf

 nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 455.45.01

Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 1920 0
    Screen      1  "Screen1" RightOf "Screen0"
    Screen      2  "Screen2" LeftOf "Screen0"
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
    Option         "Xinerama" "1"
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      "Dell S2719DGF"
    HorizSync       30.0 - 230.0
    VertRefresh     40.0 - 144.0
    Option         "DPMS"
EndSection

Section "Monitor"
    # HorizSync source: edid, VertRefresh source: edid
    Identifier     "Monitor1"
    VendorName     "Unknown"
    ModelName      "Ancor Communications Inc VS278"
    HorizSync       30.0 - 83.0
    VertRefresh     50.0 - 76.0
    Option         "DPMS"
EndSection

Section "Monitor"
    # HorizSync source: edid, VertRefresh source: edid
    Identifier     "Monitor2"
    VendorName     "Unknown"
    ModelName      "Ancor Communications Inc VS248"
    HorizSync       30.0 - 83.0
    VertRefresh     50.0 - 76.0
    Option         "DPMS"
EndSection
Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce RTX 3090"
    BusID          "PCI:1:0:0"
    Screen          0
EndSection
                                                                                                                                                  
Section "Device"                                                                                                                                  
    Identifier     "Device1"                                                                                                                      
    Driver         "nvidia"                                                                                                                       
    VendorName     "NVIDIA Corporation"                                                                                                           
    BoardName      "GeForce RTX 2080 Ti"                                                                                                          
    BusID          "PCI:4:0:0"
EndSection

Section "Device"
    Identifier     "Device2"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce RTX 3090"
    BusID          "PCI:1:0:0"
    Screen          1
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "Stereo" "0"
    Option         "nvidiaXineramaInfoOrder" "DFP-4"
    Option         "metamodes" "HDMI-0: 2560x1440_144 +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         "nvidiaXineramaInfoOrder" "DFP-2"
    Option         "metamodes" "1920x1080_60 +0+0"
    Option         "SLI" "Off"
    Option         "MultiGPU" "Off"
    Option         "BaseMosaic" "off"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Section "Screen"
    Identifier     "Screen2"
    Device         "Device2"
    Monitor        "Monitor2"
    DefaultDepth    24
    Option         "Stereo" "0"
    Option         "metamodes" "HDMI-1: nvidia-auto-select +0+0 {AllowGSYNC=Off}"
    Option         "SLI" "Off"
    Option         "MultiGPU" "Off"
    Option         "BaseMosaic" "off"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

~/.xinitrc

#!/bin/sh

userresources=$HOME/.Xresources
usermodmap=$HOME/.Xmodmap
sysresources=/etc/X11/xinit/.Xresources
sysmodmap=/etc/X11/xinit/.Xmodmap

# merge in defaults and keymaps

if [ -f $sysresources ]; then







    xrdb -merge $sysresources

fi

if [ -f $sysmodmap ]; then
    xmodmap $sysmodmap
fi

if [ -f "$userresources" ]; then







    xrdb -merge "$userresources"

fi

if [ -f "$usermodmap" ]; then
    xmodmap "$usermodmap"
fi

# start some nice programs

if [ -d /etc/X11/xinit/xinitrc.d ] ; then
 for f in /etc/X11/xinit/xinitrc.d/?*.sh ; do
  [ -x "$f" ] && . "$f"
 done
 unset f
fi


export DESKTOP_SESSION=plasma
exec startplasma-x11

twm &
xclock -geometry 50x50-1+1 &
xterm -geometry 80x50+494+51 &
xterm -geometry 80x20+494-0 &
exec xterm -geometry 80x66+0+0 -name login

Last edited by taxane (2021-01-01 09:45:50)

V1del · 2021-01-01 12:13:02

Remove the xorg config and retry

seth · 2021-01-01 12:19:30

He's got a 2-GPU, 3-output setup - ineligible for BaseMosaic
This means he'll have to use xinerama (and sacrifice randr support) but the xorg config doesn't link the outputs to the devices, see https://wiki.archlinux.org/index.php/Multihead#Xinerama

Edit: also https://aur.archlinux.org/packages/fakexrandr-git/

Last edited by seth (2021-01-01 12:30:30)

Arch Linux

#1 2021-01-01 09:44:12

KDE - Mouse is visble on all screens, but no windows or background.

#2 2021-01-01 12:13:02

Re: KDE - Mouse is visble on all screens, but no windows or background.

#3 2021-01-01 12:19:30

Re: KDE - Mouse is visble on all screens, but no windows or background.

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