Worked for me on trusty. I had trouble with sudo apt-get install systemd-services/trusty-proposed -- it wanted to uninstall too many things. Probably it would have worked fine with sudo apt-get install systemd-services/trusty-proposed libpamd- systemd/trusty-proposed. Oops.
I instead asked apt to upgrade all the binary packages built from the systemd source package: sudo apt-get install -t trusty-proposed gir1.2-gudev-1.0 libgudev-1.0-0 libpam-systemd libsystemd-daemon0 libsystemd-journal0 libsystemd-login0 libudev1 libudev1 systemd-services udev This restarted systemd-logind as expected (and blanked my screen momentarily). I asked apt to re-install all those packages: sudo apt-get install -t trusty-proposed --reinstall gir1.2-gudev-1.0 libgudev-1.0-0 libpam-systemd libsystemd-daemon0 libsystemd-journal0 libsystemd-login0 libudev1 libudev1 systemd-services udev This time systemd-logind did not restart and my screen did not blank. Thanks Martin! ** Tags added: verification-done-trusty -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1473800 Title: restarting logind during systemd update causes screen to lock To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1473800/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs