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Apsu/10-display.rules

Created August 23, 2012 05:40
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drm udev rule
Raw
10-display.rules
ACTION=="change", SUBSYSTEM=="drm", ENV{HOTPLUG}=="1", RUN+="display"
Raw
display
#!/bin/zsh
for i in /sys/class/drm/card0-*/status; do
d="${${${i#*-}%/*}/(-?-|-)}"
if [[ "$d" == "LVDS1" ]]; then
t="--output LVDS1 --auto --primary$t"
elif [[ "$(<$i)" == "connected" ]]; then
t="$t --output $d --auto --left-of LVDS1"
else
t="$t --output $d --off"
fi
done
doit() {
DISPLAY=:0 XAUTHORITY=/home/apsu/.Xauthority xrandr $*
}
doit $(echo $t)
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Apsu commented Aug 23, 2012

The 10-display.rules file goes in /etc/udev/rules.d
The display file goes in /lib/udev

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