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Update gdm-monitor.nix

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ediblerope 2026-01-11 23:05:31 +00:00 • committed by GitHub
parent 3d2cc8b4aa
commit 55c0f5cecc
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1 changed files with 53 additions and 38 deletions
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19
settings/gdm-monitor.nix
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@ -1,10 +1,10 @@
# settings/gdm-monitor-sync.nix # settings/gdm-monitor-sync.nix
{ config, pkgs, lib, ... }: { config, pkgs, lib, ... }:
{ {
# Copy monitors.xml to GDM's config directory to prevent display mode changes during login # Copy monitors.xml to GDM's config directory to prevent display mode changes during login
# This eliminates the black screen/signal loss when transitioning from GDM to user session # This eliminates the black screen/signal loss when transitioning from GDM to user session
config = lib.mkIf (config.networking.hostName == "FredOS-Gaming") { config = lib.mkIf (config.networking.hostName == "FredOS-Gaming") {
# Copy monitors.xml to GDM's config directory
environment.etc."gdm-monitors.xml" = { environment.etc."gdm-monitors.xml" = {
source = pkgs.writeText "monitors.xml" '' source = pkgs.writeText "monitors.xml" ''
<monitors version="2"> <monitors version="2">
@ -35,10 +35,25 @@ config = lib.mkIf (config.networking.hostName == "FredOS-Gaming") {
target = "gdm-monitors.xml"; target = "gdm-monitors.xml";
}; };
# Create GDM config directory and symlink the monitors.xml file
systemd.tmpfiles.rules = [ systemd.tmpfiles.rules = [
"d /var/lib/gdm/.config 0711 gdm gdm" "d /var/lib/gdm/.config 0711 gdm gdm"
"L+ /var/lib/gdm/.config/monitors.xml - - - - /etc/gdm-monitors.xml" "L+ /var/lib/gdm/.config/monitors.xml - - - - /etc/gdm-monitors.xml"
]; ];
# Log what GDM is actually using
systemd.services.gdm-display-check = {
description = "Log GDM display settings";
wantedBy = [ "gdm.service" ];
after = [ "gdm.service" ];
serviceConfig = {
Type = "oneshot";
ExecStart = "${pkgs.writeShellScript "check-gdm-display" ''
sleep 5
DISPLAY=:1024 ${pkgs.xorg.xrandr}/bin/xrandr > /tmp/gdm-display-info.txt 2>&1 || true
echo "=== GDM monitors.xml ===" >> /tmp/gdm-display-info.txt
cat /var/lib/gdm/.config/monitors.xml >> /tmp/gdm-display-info.txt 2>&1 || true
''}";
}; };
};
}; # <-- This was missing
} }