The lock screen lets a user lock the currently-running session behind a password screen. This screen may either be blank or show a screensaver until mouse or keyboard activity is detected.

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3
votes
3answers
192 views

lock screen asks for root password which I never set

I recently installed Ubuntu server on my server and I found out it had no GUI by default. So I installed it with the help of this page Everything seemed to be fine so I started copying some files to ...
9
votes
3answers
16k views

Lock Screen not working. 14.04

I recently upgraded to 14.04 and since then my lock screen is not working.I read online that gnome-screensaver is not supported in Trusty and it was suggested that I install xscreensaver instead. The ...
0
votes
1answer
539 views

ubuntu 14.04 not coming out of lock, sometimes

I have a clean 14.04 Ubuntu installation on a dell precision T5400 with a NVIDIA card. The system is updated and upgraded. When the system locks after 5 minutes, the system does not show the login ...
0
votes
1answer
578 views

Screen tuns off during skype video conversation

Fresh install of Ubuntu 14.04 in EFI mode. During skype video conversation screen turns off when, it reaches it value set in "Brightness and Lock" -> "Turn off screen when inactive for" . Is there any ...
4
votes
2answers
762 views

14.04: password not accepted after computer wakes up from sleep

If i press Ctrl+alt+L to lock the screen, I can get back in by typing my password. If I put the computer to sleep, wake it back up again, I cannot log in anymore because it says the password is ...
9
votes
2answers
4k views

How can I lock the screen using the new lockscreen from the command line?

Ubuntu 14.04 introduces a new lockscreen that looks similar to the login screen. I am still able to lock the screen using the command gnome-screensaver-command --lock (as I always did before), ...
5
votes
3answers
4k views

Unlock screen in 14.04 without `gnome-screensaver-command`

I've been happily using blueproximity in 13.10, but since upgrade to 14.04 it only locks when my phone goes out of range (using gnome-screensaver-command -l), but it does not unlock with ...
4
votes
1answer
579 views

Is there a way to switch users from the new lock screen?

I upgraded to 14.04 from 13.10 and I'm having a couple issues with the lock behavior (ctrl+alt+l). In 13.10 the monitor would go into power save and then when the screen turned back on I was able to ...
1
vote
0answers
165 views

Keep Windows in VirtualBox from locking [closed]

I am running a corporate image of Windows 7 in a VirtualBox on my Ubuntu machine. Because of restrictions from the corporation I am not allowed to change Windows so it will not turn on screensaver and ...
2
votes
1answer
5k views

Ubuntu 14.04 lockscreen turns of music + does play 'lock-sound'

My computer automatically locks its screen (as its supposed to do) after the 30 seconds that i've asked for in the lock screen settings menu. Since upgrading from the 13.10 to the 14.04 system, the ...
3
votes
2answers
3k views

How do I remove the dots from the lockscreen in Ubuntu 14.04?

You can remove the dots from the login screen in 12.04-13.10 using this method. How do you remove the dots from the new lock screen in Ubuntu 14.04?
2
votes
1answer
1k views

The screen locks as soon as I close the lid of my laptop

Whenever I close the lid, there it is the computer is locked. And I don't find any option in the power manager provided by Ubuntu to turn that feature off. Is there a tweak available? There might be ...
4
votes
1answer
422 views

No lockscreen option in CCSM 14.04

I expected to find Lockscreen option in CCSM after upgrading to Ubuntu 14.04, in Unity Plugin, general section, in order to switch between unity and lightdm. Unfortunately, It's not in the tab. Why?
4
votes
2answers
5k views

Light locker stops background activities (eg. music playback) when screen is locked

I upgraded my xubuntu installation to the new release, 14.04. This release includes a new light-locker, a great improvement if you ask me. The thing is that whenever I try to lock the session or when ...
2
votes
1answer
209 views

Screen truns off when I lock, but doesn't lock. “Lock” settings grayed out

I'm on trusty and I can't lock my computer by any means. When I press Super+L or use the Lock button in the panel, the behavior is the same: the screen turns black and if I move the mouse, my desktop ...
1
vote
1answer
2k views

Howto restore the new 14.04-lockscreen

I'm using Ubuntu 14.04 but since some weeks I'm stuck with the old 13.10 lockscreen design for some reason. I already tried compizconfig-settings-manager but it doesn't offer me any option for ...
1
vote
0answers
746 views

Disable lock screensaver

The latest update for 14.04 changed the lock screen behaviour. For a while during development of 14.04, the lock screen would not run the screensaver - just lock the screen. The following links to ...
0
votes
1answer
104 views

How to alias one command to be resolved into another command?

AFAIK alias is usually used to make 'shortcut' for long command. But what to do if I want to alias one command to another? I need this because I replaced gnome-screensaver with xscreensaver, so the ...
5
votes
1answer
3k views

How can I lock AND blank the screen from the keyboard in 14.04?

In older versions of Ubuntu when you pressed Ctrl+Alt+L it would lock and blank the screen (start the screensaver). In 14.04 it just locks the screen. How can I get it to lock AND blank the screen? ...
0
votes
3answers
177 views

Why do desktop / monitor screens fail after staying logged in overnight?

I am currently running Ubuntu 13.10. I experienced this same issue with Ubuntu 12.04, so I dont believe the following issue is tied to a specific release. I am using Ubuntu for work, by choice. Id ...
-1
votes
1answer
190 views

Black lock screen in ubuntu 14 [closed]

In Ubuntu 13 locking the screen would make the screen black. Is is possible to get this behavior in Ubuntu 14? I liked the old behavior, because I could use it, when I did not want to be distracted.
1
vote
0answers
113 views

Xubuntu doesn't allow music to play when I lock screen

If I'm locking my screen with xflock4 while playing some music, the music pauses. However, it resumes as soon as I login again. How do I play my music while my screen is locked?
1
vote
1answer
243 views

How-to stop computer locking when lid closes?

Here are my power settings: How do I stop the computer locking when I close the lid?
0
votes
1answer
206 views

How do I lock screen on Live Ubuntu?

I'm running Live Ubuntu 12.04. I don't see the 'Lock screen' button under the top right gear button. The shortcut Ctrl + Alt + L doesn't work either.
3
votes
1answer
87 views

How to launch program on lock and close it on unlock [duplicate]

Have siblings who like to "play" with my laptop by waking it from suspension and then typing random keys on the keyboard into the password field. Afterwards, they always deny it. I plan to install ...
2
votes
1answer
297 views

How can I know when my screen was locked last time?

Exist a log where I can look for that information? I want to know last days when my PC automatically locked the screen because was idle.
1
vote
0answers
218 views

LightDM will not start & xserver problems Ubuntu 12.04

I've been having an issue with resume after suspend for the past week and a half or so. After waking up the lock screen would be displayed, but I would not be able to type in my password. My ...
1
vote
1answer
48 views

how to display quota info on lock screen?

Is it possible to display user quota info on lock screen or any message at least? because every time user lock in or unlock the first window he/she will look at is going to be lock screen.
1
vote
6answers
1k views

Unable to unlock after locking when VirtualBox is in full screen mode

I'm running 13.10 as host, with a VirtualBox 4.2.16_Ubuntu running Windows 8.1 as guest. I had the virtual machine in full screen mode when Ubuntu locked due to inactivity. I tried to wake the ...
1
vote
0answers
451 views

Cannot enter password in lock screen dialog after long suspend

I am currently using Ubuntu 13.10 and recently I've noticed that after my ASUS K56CB laptop goes into suspend mode, and is left like that for a long time (about an hour or more), the password input ...
2
votes
0answers
59 views

Black screen after screen off on 13.10

I swtiched "Turn screen off when inactive for" to 3 minutes and Lock screen after screen goes off to on. The problem is that after the screen is off, when I try to come back I can`t do anything, the ...
1
vote
0answers
24 views

Having computer switch to guest account after a certain amount of time

Instead of having the screensaver lock my computer is it possible to have it switch to the guest account instead. I'm using ubuntu 13.10 64bit Thanks
1
vote
1answer
90 views

Action on unlock/login

I need to run custom command on every login and unlock screen (e.g. user didn't logged out but lock screen). Do you have any ideas how I can implement it? I'm using Ubuntu 13.10.
4
votes
2answers
332 views

How to detect events like lock/unlock screen, enter/return suspend and monitor power off

I am wondering if there is any way to detect system wide events under linux such as: user un/locked session user logs in/out machine sent to suspend screensaver goes on and the monitor switches off ...
0
votes
1answer
40 views

System can not return display after locking

My Ubuntu 13.10 works great except for one issue. When I lock the system and try to unlock after long time I don not get any display on the screen, no matter what key I hit. Kindly suggest a fix. ...
2
votes
1answer
2k views

How do I change my lock screen in Ubuntu 13.10?

Currently my lock screen is what I am assuming is the default lock screen. the command: gnome-screensaver-command -l activates this screen. I installed light-locker and want the system to use this ...
1
vote
0answers
60 views

How do I change the appearance of the Unity greeter? [duplicate]

Is there any way to change the appearance of the Lock Screen on Ubuntu 13.10 (unity)? At current its simply a black screen with a tiny clock on the upper right corner. I would like to change this to ...
2
votes
1answer
146 views

How to show the login screen instead of the lock screen?

I want Ctrl+Alt+L and being idle to trigger dm-tool switch-to-greeter (goes to login screen) instead of lock screen I intend to replace every event where lockscreen would appear to show login ...
1
vote
2answers
3k views

Which command locks screen with lightDM?

I used to lock screen with this command, but it stopped working recently, probably after update. I'm running VERSION="13.10, Saucy Salamander". How can I restore this function? $ gdmflexiserver ...
1
vote
1answer
684 views

Is there an application that can unlock my computer via Bluetooth?

I have a Mac and I use an application called TokenLock that uses my iPod's Bluetooth signal to lock/unlock my computer when I get near/too far from it. Is there something like that for Ubuntu?
2
votes
1answer
2k views

How to disable xscreensaver lock on suspend?

I have recently installed Ubuntu 12.04 LTS and have installed xscreensaver. As I am the only user on this computer and I am only using the computer for music, movies, and some web browsing I have no ...
3
votes
2answers
249 views

No wakeup after screenlock

After 10 minutes my desktop computer darkens the screen, and when I move the mouse or tab any key it comes back alive and asks for my password. That is perfect and the behavior I like to have it. But ...
2
votes
2answers
586 views

How to run a script each time I login AND unlock session

In Saucy salamander I need to run a script each time I login then each time I unlock the session after manual lock or auto sleep. I can't use "Startup Application" for that because it wouldn't trigger ...
1
vote
1answer
30 views

Blanking screen @ 30 Second intervals for no apparent reason

My screen keeps blanking at 30 seconds if nothing is touched or moved. It seems to have started after a recent update. I have tried changing screen-saver settings, xset values, and installing ...
0
votes
1answer
67 views

screensaver lock won't release

I have my Ubuntu 12 desktop set to lock after a time period-- this works fine, but when I go to unlock it sometimes (usually only after leaving it locked overnight) won't come out of the locked ...
0
votes
1answer
170 views

How do I bind a key to a command on the lock screen?

I want to bind a key when the lock screen is up (or the screensaver is on). My machine is often locked and I want to be able to hit a shortcut to run a script in my home directory. I've used System ...
0
votes
1answer
263 views

Screen does not switch off when idle

I'm using 13.04.3 LTS on a desktop machine. Whenever I lock the screen, the screen goes blank for a couple of seconds, but then shows the login screen again. It never actually switches off (the ...
0
votes
2answers
1k views

How to disable screen lock timeout from a script?

I'm looking for a way to disable screen dimming and desktop locking timeout from a bash script on Ubuntu 13.10. The script should be run when user logs in (configured in Startup Applications window) ...
2
votes
2answers
181 views

Can you lock the Unity screen after 15 minutes, not shown in “Brightness & Lock” dropdown?

In Ubuntu 13.10, the Brightness & Lock dialog lets you lock the screen after idle time of 1, 2, 3, 5, 10, 30, and 60 minutes. Is it possible to set a different idle time not shown in this list, ...
2
votes
0answers
408 views

Display date/time in Ubuntu lock screen (cinnamon-like)

I was using Ubuntu 13.04 till a few days ago. I had installed Nemo and I guess cinnamon got installed too (I was still using Unity nonetheless). One of the good things about that was the lock screen ...