After some poking about I have discovered that LightDM no longer crashes if I change `/etc/lightdm/lightdm.conf.d/90-ubuntu-mate.conf` from:
[SeatDefaults] autologin-user=ubuntu autologin-user-timeout=0 user-session=mate ...to: [SeatDefaults] user-session=mate That said, the original configuration was working prior to August 28th 2014 and continues to work in Ubuntu Trusty 14.04. I hope this additional information is useful. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1369952 Title: LightDM crashed when selecting "Try Ubuntu" on Ubuntu MATE To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1369952/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs