Yes it appears that the default behaviour is to suspend when the lid is closed. And most surprisingly, Settings (3.24 at least) provides no option to change that.
WORKAROUND: sudo apt install gnome-tweak-tool then in gnome-tweak-tool > Power > Suspend when laptop lid is closed = OFF ** Also affects: gnome-shell (Ubuntu) Importance: Undecided Status: New ** Also affects: gnome-control-center (Ubuntu) Importance: Undecided Status: New ** Tags added: gnome-17.10 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1716160 Title: System goes to sleep with lid closed after login Status in gdm3 package in Ubuntu: New Status in gnome-control-center package in Ubuntu: New Status in gnome-shell package in Ubuntu: New Bug description: Using a laptop with lid closed and an external monitor, you can boot. Bios will show on the external monitor, as well as gdm when boot is finished. You can then choose a user and type in your password, which is accepted. But then, system goes to sleep (as the lid is cloesd I guess). Going out of sleep with the power button shows the gnome shell. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716160/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp