Public bug reported: This symptom is observed with Ubuntu Mate 20.04.
1. Create /etc/lightdm/lightdm.conf.d/10-xdmcp.conf as [XDMCPServer] enabled=true and restart lightdm. 2. Login as a normal user from keyboard. 3. Login as the same user as 2 from XDMCP gives "Could not acquire name on session bus" and I cannot login from XDMCP. Without Step 2, XDMCP login succeeds. The same symptom is reported at https://github.com/neutrinolabs/xrdp/issues/1559#issuecomment-623977001 which recommends removal of "dbus-user-session" Ubuntu package. I worked around the above issue by putting "unset DBUS_SESSION_BUS_ADDRESS" in /etc/X11/Xsession.d/ The same issue is also reported at https://bugs.launchpad.net/ubuntu-mate/+bug/1769353 ** Affects: lightdm Importance: Undecided Status: New ** Affects: ubuntu-mate Importance: Undecided Status: New ** Affects: lightdm (Ubuntu) Importance: Undecided Status: New ** Tags: ubuntu ** Also affects: lightdm (Ubuntu) Importance: Undecided Status: New ** Also affects: ubuntu-mate 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/1894356 Title: could not acquire name on session bus by simultaneous login by XDMCP and keyboard To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1894356/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
