This repository has no description
machines.xerxes: fix fan spinning during s2idle suspend
author
lassulus
date
(Feb 28, 2026, 11:53 PM CET)
commit
85294969
85294969b36b950308a6dd24d2eeb46719e28cf0
parent
f669e439
f669e439061f7c7e4829dbc7772de4f3b3c49896
+30
-2
+30
-2
machines/xerxes/gpd-fan.nix
+30
-2
machines/xerxes/gpd-fan.nix
···
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echo 1 > "$PWM_ENABLE"
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cleanup() {
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-
echo "Restoring automatic fan control..."
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echo 0 > "$PWM_ENABLE" 2>/dev/null || true
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echo "Setting fan to 0..."
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echo 0 > "$PWM_FILE" 2>/dev/null || true
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}
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trap cleanup EXIT
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···
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# Disable the built-in fancontrol (it uses brittle hwmon numbers)
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hardware.fancontrol.enable = false;
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# Stop fan service and set PWM to 0 before s2idle, restart after resume
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environment.etc."systemd/system-sleep/gpd-fan".source = pkgs.writeShellScript "gpd-fan-sleep" ''
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find_hwmon() {
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for hwmon in /sys/class/hwmon/hwmon*; do
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if [ -f "$hwmon/name" ] && [ "$(cat "$hwmon/name")" = "$1" ]; then
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echo "$hwmon"
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return 0
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fi
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done
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return 1
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}
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case "$1" in
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pre)
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# Stop the fan service first so it can't overwrite our PWM 0
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systemctl stop gpd-fan-control.service
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FAN=$(find_hwmon gpdfan)
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if [ -n "$FAN" ]; then
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echo 1 > "$FAN/pwm1_enable"
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echo 0 > "$FAN/pwm1"
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fi
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;;
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post)
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systemctl start gpd-fan-control.service
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;;
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esac
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'';
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systemd.services.gpd-fan-control = {
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description = "GPD Fan Control (dynamic hwmon discovery)";
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wantedBy = [ "multi-user.target" ];
···
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RestartSec = 5;
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};
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};
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+
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}