Lock Screen shortcut doesn't work after each login

[Andrew Schulman]

Each time I log in, the Lock Screen shortcut (Super + L) doesn't work. In System Settings > Keyboard > Shortcuts > System, next to "Lock screen" the shortcut is listed as Super + L, and the pull-down menu at top right of the desktop also shows "Lock Screen .. Super + L". But when I press Super + L, nothing happens. Left and right super give the same result.

Now if I go into System Settings > Keyboard and manually set the Lock screen shortcut to Super + L, then it works... until the next time I log out and log back in again. So, each time I log in I have to manually reset the shortcut again.

I've tried and failed to find a solution to this. I'm happy to help troubleshoot.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity 5.18.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-38.61-generic 3.2.37
Uname: Linux 3.2.0-38-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu17.1
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,gnomecompat,move,resize,imgpng,vpswitch,unitymtgrabhandles,grid,snap,mousepoll,regex,wall,place,session,animation,expo,workarounds,fade,ezoom,scale,unityshell]
Date: Sun Feb 24 10:45:42 2013
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
MarkForUpload: True
SourcePackage: unity
UpgradeStatus: Upgraded to precise on 2013-01-13 (41 days ago)

[madbiologist (me-again)]

I am running Ubuntu 12.04.2 32 bit here. On my system, pressing Super + L opens the Launcher. The pull-down menu at the top right of the desktop shows "Lock Screen Ctrl+Alt+L", which does lock my screen.

unity 5.18.0-0ubuntu2

[Andrew Schulman (andrex)]

I'm not sure why your shortcut is different from mine, but it doesn't seem to matter. I don't know if Super+L was the default shortcut, or whether I set it, but either way, I have set it now. The settings say that Super+L is the right shortcut, but it doesn't work after each login, until I reset it again.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.