Known issue. It was fixed in 231-4 which just landed in yakkety, bug this affects upgrades from any 231-{1,2,3} *to* 231-4. So upgrade to 231-4 and reboot.
** Bug watch added: Debian Bug tracker #834367 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=834367 ** Also affects: systemd (Debian) via http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=834367 Importance: Unknown Status: Unknown ** Changed in: systemd (Ubuntu) Status: New => Fix Released -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1615184 Title: systemd update breaks screen lock, dpms, startup programs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1615184/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs