– title: Disable monitor at login (SDDM) categories: [linux,sddm] tags: [sddm,display_manager,login,monitor] —
Disable monitor at login when using SDDM
I have dual monitors but SDDM shows the cursor on the right monitor but the left one i the main monitor.
These changes will disable the right monitor at login and then enable it when the desktop environments starts.
The first steps
Check /etc/sddm.conf for
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[X11]
DisplayCommand=/etc/sddm/Xsetup
If that file does not excist make one with
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sddm --example-config > ./sddm.conf
Copy the content to /etc/sddm.conf
In theory you should be able to
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sddm --example-config > /etc/sddm.conf
But I had permission issues with that.
Check which monitors are connected
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xrandr | grep " connected "
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DisplayPort-0 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 531mm x 299mm
HDMI-A-0 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 510mm x 287mm
My main monitor is DisplayPort-0 and the secondary one is HDMI-A-0
Making some scripts changes
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sudo nano /etc/sddm/Xsetup
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#!/usr/bin/sh
# Xsetup - run as root before the login dialog appears
xrandr --output HDMI-A-0 --off
xrandr --output DisplayPort-0 --mode 1920x1080 --pos 0x0 --rotate normal --rate 144
Also make a script in you home directory (or where ever)
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#!/usr/bin/sh
xrandr --output DisplayPort-0 --mode 1920x1080 --pos 0x0 --rotate normal --rate 144
xrandr --output HDMI-A-0 --mode 1920x1080 --pos 1920x0 --rotate normal
Make it executable and add it as a startup program in your desktop environment.