The change fixes the issue for me, though of course it may not be the only issue affecting screen locking with light-locker (as per the original bug description). If you continue to have problems please comment here an open a new bug and we'll tackle further issues there. Thanks for all the great feedback in this bug!
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/1656399 Title: Returning to existing session is unreliable and can leave on blank screen Status in Light Display Manager: Fix Released Status in Light Display Manager 1.10 series: Fix Committed Status in Light Display Manager 1.18 series: Fix Committed Status in Light Display Manager 1.20 series: Fix Committed Status in lightdm package in Ubuntu: In Progress Status in lightdm source package in Trusty: Triaged Status in lightdm source package in Xenial: Triaged Status in lightdm source package in Yakkety: Triaged Bug description: [Impact] Due to a logic bug LightDM returning to an existing session from a greeter can be unreliable. This case is common in systems which use the greeter as a lock screen. The bug was introduced in revision 1954 to fix bug 1296276. The race condition seems to have been made more likely to the change in revision 2437 to fix bug 1637758. [Test Case] 1. Log into a session 2. Switch to the greeter (e.g. dm-tool switch-to-greeter) 3. Log in again Expected result Returned to existing session Observed result Not always returned, can end up on blank screen. Since this is a race condition this may not occur on some systems. [Regression Potential] Low, the fix is to correct a logic bug that made LightDM think it hadn't stopped a session correctly. To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1656399/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
