Public bug reported: I installed Ubuntu 20.04, it is running well. I switched display manager to lightdm. I noticed that it fails to set environment variables XDG_SEAT, XDG_VTNR, XDG_SESSION_ID. I also tested gdm3, it's the same. I also tried liveiso to no vail.
apt-cache policy lightdm lightdm: Installed: 1.30.0-0ubuntu3.1 Candidate: 1.30.0-0ubuntu3.1 Version table: *** 1.30.0-0ubuntu3.1 500 500 http://archive.ubuntu.com/ubuntu focal/universe amd64 Packages 100 /var/lib/dpkg/status ** Affects: lightdm (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1879090 Title: XDG_SEAT, XDG_VTNR, XDG_SESSION_ID not set To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1879090/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs