The cause of this issue has to be in Xorg 1.20 then (18.04 comes with 1.19).
I assume that xserver-xorg-video-intel is still installed by default, so please check if removing this driver package has any effect (the generic modesetting driver will be used instead). For reference the greeter code: https://git.launchpad.net/lightdm-gtk-greeter/tree/src/lightdm-gtk-greeter.c#n2830 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1801609 Title: Fails to deactivate dpms off mode after user initiated wake-up events(not system-suspended, just locked and dpms active) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1801609/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
