Ubuntu – CTRL + ALT + L and CTRL + ALT + DEL are not working in ubuntu 12.04

lock-screenshortcut-keys

I have re installed ubuntu-desktop. After that Ctrl+Alt+L and Ctrl+Alt+Del shortcuts are not working.

If I click on the button on the top right side of the desktop (where things like logout, switch user and shutdown appear) I can see that lock screen has Alt+L next to it, but its colored grey. If I am clicking from there screen lock and logout are working. But the shortcuts are not working.

Best Answer

As a workaround you could create a shortcut (System Settings -> Keyboard -> Shortcuts tab) and assign it to command gnome-screensaver-command -l

Related Solutions

Ubuntu – Screen turns black but doesn’t lock when I press Ctrl+Alt+L

If you create a password in "user accounts" then Ctrl + Alt + L will lock with a password. If you don't want to have to type in a password for log on then simply enable automatic log on. Hope this helps. :)

Ubuntu – Unity Ctrl + Alt + Del set default value to ‘Lock’

You can override the default shortcut by creating your custom shortcut for this purpose.

Go to System Settings -> Keyboard -> Shortcuts -> Custom Shortcuts

Add a shortcut with any name with following command in command box

qdbus org.gnome.ScreenSaver /org/gnome/ScreenSaver org.gnome.ScreenSaver.Lock

Now click on this newly created shortcut and assign it Ctrl+Alt+Del
Click on Reassign if popup window is appearing with warning message about shortcut conflict.

To restore the default behaviour of Ctrl+Alt+Del shortcut

Delete your custom shortcut.
Select System in left column of shortcut setting window.
Select logout shortcut and assign it Ctrl+Alt+Del

Best Answer

Related Solutions

Ubuntu – Screen turns black but doesn’t lock when I press Ctrl+Alt+L

Ubuntu – Unity Ctrl + Alt + Del set default value to ‘Lock’

Related Question