Good catch. The description of the behavior is very similar. Following a review of that thread, I did some more testing. Below are the findings:
Reboot the system Attempt to log into 'Ubuntu' session Screen goes black for 2-3 seconds and returns me to login screen Attempt to log into 'Ubuntu on Xorg' session Login succeeds and session starts normally Log out Attempt to log into 'Ubuntu' session Screen goes black for 2-3 seconds and returns me to login screen Attempt to log into 'Unity' session Login succeeds and Unity session starts normally Log out Attempt to log into 'Ubuntu' session Login succeeds and session starts normally So, it appears that I can log into either Unity or Ubuntu on Xorg after a clean reboot without issue. However, I can only log into a Ubuntu session if I have first logged into a Unity session, then logged out. Logging in to Xorg doesn't help. Attached is a new debug syslog that should capture the entire sequence. The login attempts should start at the 'Oct 25 15:32:39' timestamp. ** Attachment added: "syslog_Xorg_Ubuntu_Unity_Ubuntu.txt" https://bugs.launchpad.net/ubuntu/+source/gnome-desktop/+bug/1726192/+attachment/4995347/+files/syslog_Xorg_Ubuntu_Unity_Ubuntu.txt -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-desktop in Ubuntu. https://bugs.launchpad.net/bugs/1726192 Title: 17.10 Login To Wayland Fails Unless User Logs Into Unity First Status in gnome-desktop package in Ubuntu: New Bug description: After upgrading from 17.04 to 17.10, it's not possible to log into the default 'Ubuntu' session unless I log into Unity first. If I log into Unity, immediately log out, then log into Ubuntu, it logs in without issue. If I don't log into Unity first, the login attempt to Ubuntu briefly shows a black screen, then returns immediately to the login prompt. From suspend or hibernate, I can continue using the Wayland session without issue through poweroff. If I reboot or shutdown, the first login needs to be Unity, then I can log out and back to the Ubuntu session normally. Attached is some output from syslog showing gnome-session related errors. I'm not sure if they show the specific error, but they do appear at the time a first Ubuntu login is attempted. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-desktop/+bug/1726192/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
