How to lock my screen?

11.10 lock-screen

42,868

Solution 1

I installed ubuntu tweak . go to the "Tweaks" part and then to the "Security related" . Then unchecked "Disable lock screen " ! Thats it !

Solution 2

Ctrl+Alt+L

The above keyboard shortcut will lock your screen.

Solution 3

I was reading around & saw that some computers if CON+ALT+L doesn't work to try the "Windows" botton + L (the button with the little Windows logo, if that's the type of computer you're using) WIN+L ---> It worked on mine, I couldn't find the shortcuts mentioned above so I tried this & it worked! Good luck!!

Solution 4

Try screensaver command, and see if this is the keyboard (shortcut) or the application (graphics function) that is not working:

gnome-screensaver-command -l

Also check shortcut: (should be Ctrl-Alt-L )

>> System Settings >> Keyboard >> Shortcuts >> System

  Lock screen                                  Ctrl+Alt+l

View more solutions

42,868

mahdiar

www.paaz.ir

Updated on September 18, 2022

Comments

mahdiar almost 2 years
I can't enable lock screen mode in my laptop and also in my PC. I went to system setting > screen > lock Ctrl+Alt+L : Nothing happens! the shortcut is there but not works !
```
sudo apt-get --reinstall install gnome-screensaver :
Reading package lists... Done
Building dependency tree       
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
 dassault-systemes-draftsight:i386 : Depends: sendmail:i386 but it is not installable
                                     PreDepends: libdirectfb-extra:i386 (>= 1.2.7-2) but it is not going to be installed
                                     PreDepends: libxcb-render-util0:i386 (>= 0.3.6-1) but it is not installable
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
```
- nilsonneto over 12 years
  
  what happens if you run gnome-screensaver-command -l ?
- mahdiar over 12 years
  
  nothing happens !
- nilsonneto over 12 years
  
  try sudo apt-get --reinstall install gnome-screensaver and then try again gnome-screensaver-command -l
- mahdiar over 12 years
  
  I can't ! it says :"You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: dassault-systemes-draftsight:i386 : Depends: sendmail:i386 but it is not installable PreDepends: libdirectfb-extra:i386 (>= 1.2.7-2) but it is not going to be installed PreDepends: libxcb-render-util0:i386 (>= 0.3.6-1) but it is not installable E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). "
- nilsonneto over 12 years
  
  ok - we are narrowing down the issue - you've got package issues. Either remove that draftsight package or try and fix it ... maybe this Q&A helps? askubuntu.com/questions/39647/how-do-i-install-draftsight-ca‌d
- mahdiar over 12 years
  
  I removed it and the re-installation completed without any errors .
- Jorge Castro over 12 years
  
  @Mahdiar We don't do "solved" here, so I rolled back your question, you can post how you solved it as an answer at the bottom, and then check the checkmark to mark it solved. Thanks!
mahdiar over 12 years

the fist command doesn't work and the shortcut is ok !
mahdiar over 12 years

Thanks But it doesn't work !
jrg over 12 years

@mahdiar but you just said in the comment on the other answer that it works.
mahdiar over 12 years

Sorry !!! I mean I can see the correct shortcut key in the settings but it doesn't work !
david6 over 12 years

What error message? Command not found, etc.
jrg over 12 years

@mahdiar interesting... I think fossfreedom is on the right track in the answer above.
mahdiar over 12 years

no error !! nothing happened .
david6 over 12 years

Try gnome-screensaver-command -a to activate.
Stavros Korokithakis almost 12 years

This is the only thing that worked for me, I had the same problem. Upvoted. Does anyone know what this actually did?
Eliah Kagan almost 11 years

That shortcut works in Windows. Does it work in Ubuntu also? (I don't use Unity so I cannot easily test this on my Ubuntu systems.)
SDsolar about 7 years

Works for me! Upvote. I have xscreensaver installed but disabled, and in power I tell it never to disable the screen. But Ctrl-Alt-L is perfect. Now I can walk away safely while a long copy is running. Thank you, @James! It only took about 2 minutes of searching to find your answer. Pretty cool.
Francis almost 6 years

Verified it works on Ubutnu 18.04 running on System76 Oryx Pro