I have tested this yesterday, and i don't have this issue, may be because i have 4 digit password on system i have tested on, and i'm entering password on numpad?
gnome-screensaver: Installed: 3.6.1-0ubuntu16 Ubuntu 15.04, Unity DE -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-screensaver in Ubuntu. https://bugs.launchpad.net/bugs/1441867 Title: First entered password at lockscreen is always wrong after screen was turned off after inactivity Status in gnome-screensaver package in Ubuntu: Confirmed Bug description: 1) The release of Ubuntu you are using, via 'lsb_release -rd' or System -> About Ubuntu 15.04 (This bug was also present on 14.04 and 14.10) 2) The version of the package you are using, via 'apt-cache policy pkgname' or by checking in Software Center 3.6.1-0ubuntu16 3) What you expected to happen Screen should be unlocked 4) What happened instead I see message about wrong password (but password is definitely entered correctly) After that I enter it again and it's finally unlocked ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: gnome-screensaver 3.6.1-0ubuntu16 Uname: Linux 4.0.0-040000rc6-generic x86_64 ApportVersion: 2.17-0ubuntu1 Architecture: amd64 CurrentDesktop: Unity Date: Thu Apr 9 00:15:10 2015 GnomeSessionIdleInhibited: No GnomeSessionInhibitors: None GsettingsGnomeSession: org.gnome.desktop.session session-name 'ubuntu' org.gnome.desktop.session idle-delay uint32 300 InstallationDate: Installed on 2014-08-18 (233 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) SourcePackage: gnome-screensaver UpgradeStatus: No upgrade log present (probably fresh install) mtime.conffile..etc.xdg.autostart.gnome.screensaver.desktop: 2015-02-23T22:15:30.972841 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-screensaver/+bug/1441867/+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