Use Your Laptop As A Server
Tested on : Ubuntu 20.04 LTS
To disable entering the sleep mode I had to edit the /etc/systemd/logind.conf
file and modify the line:
Just uncomment the line by removing #
from this :
#HandleLidSwitch=suspend
#LidSwitchIgnoreInhibited=no
#HandleLidSwitchDocked=ignore
to this :
HandleLidSwitch=ignore
LidSwitchIgnoreInhibited=no
HandleLidSwitchDocked=ignore
Then restart the OS via:
sudo service systemd-logind restart
Then you can close the laptop lid .