I didn't even notice I'd put the release twice. Here's the gnome-shell info:
apt-cache policy gnome-shell gnome-shell: Installed: 3.18.5-0ubuntu0.3 Candidate: 3.18.5-0ubuntu0.3 Version table: *** 3.18.5-0ubuntu0.3 500 500 http://us.archive.ubuntu.com/ubuntu xenial-updates/universe amd64 Packages 100 /var/lib/dpkg/status 3.18.4-0ubuntu3 500 500 http://us.archive.ubuntu.com/ubuntu xenial/universe amd64 Packages -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1705146 Title: gnome-shell assert failure: *** Error in `/usr/bin/gnome-shell': corrupted size vs. prev_size: 0x0000000005405f00 *** To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1705146/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs