47 lines
1.1 KiB
Text
47 lines
1.1 KiB
Text
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#!/bin/sh
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set -eu
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# Loaded from ~/.config/environment.d/50-defaults.conf or a local override
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BRIGHTNESS="${DEFAULT_KEYBOARD_BRIGHTNESS:?unset, check ~/.config/environment.d/}"
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# Nothing to do on machines without a keyboard backlight
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KBD_DEVICE=
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for led in /sys/class/leds/*kbd_backlight*; do
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[ -e "$led" ] || break
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KBD_DEVICE=$led
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break
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done
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if [ -z "$KBD_DEVICE" ]; then
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echo "No keyboard backlight, skipping"
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exit 0
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fi
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kbd_set() {
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gdbus call --session \
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--dest org.gnome.SettingsDaemon.Power \
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--object-path /org/gnome/SettingsDaemon/Power \
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--method org.freedesktop.DBus.Properties.Set \
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org.gnome.SettingsDaemon.Power.Keyboard Brightness "<int32 $BRIGHTNESS>" \
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>/dev/null
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}
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gdbus wait --session --timeout 10 org.gnome.SettingsDaemon.Power
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# `gsd-power` owns its bus name before it has probed the keyboard
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# backlight, so at login the first write may silently be discarded
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kbd_set
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if [ "$(cat "$KBD_DEVICE/brightness")" = "0" ]; then
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sleep 3
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kbd_set
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fi
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echo "Set keyboard brightness to $BRIGHTNESS"
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