I can't reproduce this, do you get this on regular basis? However the problem looks different, as you don't either get the panel showing in your lockscreen.
** Changed in: unity Assignee: (unassigned) => Andrea Azzarone (azzar1) -- You received this bug notification because you are a member of DX Packages, which is subscribed to unity in Ubuntu. Matching subscriptions: dx-packages https://bugs.launchpad.net/bugs/1452171 Title: No password field appears after wake from sleep Status in Unity: New Status in unity package in Ubuntu: New Bug description: To reproduce, close laptop lid and allow to go to sleep. Some time later, open laptop lid. No password field appears and I can't unlock the screen, see attached screenshot. This only happens sometimes (maybe one in ten or fewer?). It seems very similar to another bug which is allegedly fixed, so I have raised this one. The mouse cursor moves. Ctrl-Alt-F1 to a terminal and sudo services restart lightdm restarts X but still results in no password field. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: unity 7.3.2+15.04.20150420-0ubuntu1 ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3 Uname: Linux 3.19.0-15-generic x86_64 ApportVersion: 2.17.2-0ubuntu1 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CurrentDesktop: Unity Date: Wed May 6 09:32:46 2015 InstallationDate: Installed on 2015-04-05 (30 days ago) InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1) SourcePackage: unity UpgradeStatus: Upgraded to vivid on 2015-04-23 (12 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/1452171/+subscriptions -- Mailing list: https://launchpad.net/~dx-packages Post to : dx-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~dx-packages More help : https://help.launchpad.net/ListHelp