I just upgraded to Ubuntu 18.04.2 LTS and figured out that there is no option in settings to change the lid closing behavior.
I tried the command line method from the answer here:
HandleLidSwitch=ignore worked successfully. But, this thing doesn't turn off the screen like it happens in Windows.
I want to keep the System running, but turn the screen off when the lid is closed.
11 Answer
HandleLidSwitch=ignore does just that: it ignores lid behavior. So the screen will not turn off if you use this method.
The following answer is adapted from this source
You will need to write a script:
In a terminal, create the file /etc/acpi/lid.sh, make it executable, and instruct your system to reference this file for the behavior of lid "events":
sudo touch /etc/acpi/lid.sh
sudo chmod +x /etc/acpi/lid.sh
sudo echo 'event=button/lid.*' | tee --append /etc/acpi/events/lm_lid
sudo echo 'action=/etc/acpi/lid.sh' | tee --append /etc/acpi/events/lm_lidthen, open the script for editing:
sudo nano /etc/acpi/lid.shThe contents of this file should be: (replace your_username with your username)
#!/bin/bash
USER=your_username
grep -q close /proc/acpi/button/lid/*/state
if [ $? = 0 ]; then su -c "sleep 1 && xset -display :0.0 dpms force off" - $USER
fi
grep -q open /proc/acpi/button/lid/*/state
if [ $? = 0 ]; then su -c "xset -display :0 dpms force on &> /tmp/screen.lid" - $USER
fiCTRL + O to save and CTRL + X to exit.
Reboot your system.
This may not work with multiple users.
