To make something happen on opening and closing the laptop lid scripts can be created to handle it.
Create file /etc/acpi/events/lm_lid.
Insert the following content:
event=button/lid.*
action=/etc/acpi/lid.sh
Create file /etc/acpi/lid.sh to handle the events.
#!/bin/bash
# Check if the lid of the laptop is closed.
grep -q close /proc/acpi/button/lid/*/state
if [[ $? = 0 ]] ; then
xrandr --output LVDS1 --off
xrandr --output HDMI1 --auto
logger "Switching laptop monitor OFF"
echo "Switching laptop monitor OFF"
fi
# Check if the lid of the laptop is open.
grep -q open /proc/acpi/button/lid/*/state
if [ $? = 0 ] ; then
xrandr --output LVDS1 --auto
#xrandr --output HDMI1 --auto
logger "Switching laptop monitor ON"
echo "Switching laptop monitor ON"
fi