** Description changed: - Unable to unlock Xubuntu XFCE session after suspend. I'm presented with - unlock screen, and entering credentials will redirect to a black screen - with "This session is locked", and "you will be redirected to unlock - screen". + [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. + + [Regression Potential] + Low, the fix is to correct a logic bug that made LightDM think it hadn't stopped a session correctly.
** Changed in: lightdm/1.20 Status: New => Fix Committed ** Changed in: lightdm/1.18 Importance: Undecided => High ** Changed in: lightdm/1.18 Status: New => Fix Committed ** Changed in: lightdm/1.10 Importance: Undecided => High ** Changed in: lightdm/1.10 Status: New => Fix Committed ** Description changed: [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. + 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. ** Changed in: lightdm/1.20 Importance: Undecided => High ** Changed in: lightdm/1.10 Milestone: None => 1.10.7 ** Changed in: lightdm/1.18 Milestone: None => 1.18.4 ** Changed in: lightdm/1.20 Milestone: None => 1.20.1 ** Changed in: lightdm Importance: Undecided => High ** Changed in: lightdm Status: New => Fix Committed ** Changed in: lightdm Milestone: None => 1.21.5 ** No longer affects: light-locker (Ubuntu) ** No longer affects: light-locker (Ubuntu Trusty) ** No longer affects: light-locker (Ubuntu Yakkety) ** No longer affects: light-locker (Ubuntu Xenial) ** Changed in: lightdm Assignee: (unassigned) => Robert Ancell (robert-ancell) ** Changed in: lightdm/1.10 Assignee: (unassigned) => Robert Ancell (robert-ancell) ** Changed in: lightdm/1.18 Assignee: (unassigned) => Robert Ancell (robert-ancell) ** Changed in: lightdm/1.20 Assignee: (unassigned) => Robert Ancell (robert-ancell) ** Changed in: lightdm (Ubuntu Trusty) Status: New => Triaged ** Changed in: lightdm (Ubuntu Xenial) Status: New => Triaged ** Changed in: lightdm (Ubuntu Yakkety) Status: New => Triaged ** Changed in: lightdm (Ubuntu Trusty) Importance: Undecided => Medium ** Changed in: lightdm (Ubuntu Yakkety) Importance: Undecided => Medium ** Changed in: lightdm (Ubuntu Xenial) Importance: Undecided => Medium -- You received this bug notification because you are a member of नेपाली भाषा समायोजकहरुको समूह, which is subscribed to Xenial. Matching subscriptions: Ubuntu 16.04 Bugs 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 Committed 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/~group.of.nepali.translators Post to : group.of.nepali.translators@lists.launchpad.net Unsubscribe : https://launchpad.net/~group.of.nepali.translators More help : https://help.launchpad.net/ListHelp