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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1answer
71 views

KDE randomly locks screen

I have Ubuntu 12.04 LTS and I installed the KDE desktop via the sudo apt-get install kde-plasma-desktop command (I wanted less stuff than the sudo apt-get install kubuntu-desktop command would ...
0
votes
1answer
1k views

How can I disable the lock screen away message in Cinnamon?

I have an issue where the lock screen wants me to input an 'Away Message'. How can I disable this option? This is with the Cinnamon window manager on Ubuntu 12.04.
3
votes
1answer
4k views

Ubuntu 13.04 not locking screen

I might have uninstalled some packages I shouldn't. For now, the only thing I've been missing is the lock screen. When I press Ctrl + Alt + L, or press the "Lock" button on the shutdown menu or I ...
0
votes
1answer
622 views

Where did the lockscreen clock go?

I am using raring dailies, and one thing that my eyes liked was the lockscreen. I really liked the clock. A simple thing, but still really good? Now it is suddenly gone. Did they really remove it ...
4
votes
2answers
285 views

Is the lock screen secure enough to prevent “Mallory” from accessing the encrypted drive?

I use truecrypt to encrypt one of my drives and I would want to leave the computer running processes that use information of that drive while I'm not home, I've tried suspending it but everything ...
1
vote
0answers
235 views

How do I prevent Ubuntu 12.04 from locking, when using Win7 in VirtualBox?

I use Ubuntu 12.04 plus Windows 7 from VirtualBox. The thing is that, when I am in Windows "too long" (longer than the time after which Ubuntu normally locks), Ubuntu locks. It's not expected, because ...
8
votes
1answer
775 views

Multimonitor in login screen vs. lock screen

I have a multiple monitor setup with two screens. The login screen uses dual monitor mode (as seen on the first picture), but the lock screen (CTRL + ALT + L) uses only a single monitor and disables ...
1
vote
0answers
50 views

How to speedup the rendering of the onboard on screen keyboard in the unlock screen?

I have a panel-pc with a touch-screen and are using ubuntu 12.04 LTS. When the screen is locked and then touched the lock-screen is shown but the onboard osk is not rendered yet. This takes a second ...
2
votes
1answer
266 views

How can the username be removed from the lock screen?

When the lock screen is active (it can e.g. be activated with Ctrl+Alt+L) the username is shown. How can I remove the username from the lock screen? I want the lock screen to simply not display the ...
1
vote
2answers
325 views

No lock screen option for certain user

I seem to have lost the lock screen option for one user of the system. It does not appear in the menu in the top right hand corner (with Log Out etc) and nor does Ctrl+Alt+L do anything despite being ...
0
votes
1answer
406 views

How do I avoid having to unlock twice when using xtrlock?

I've installed xtrlock on Ubuntu 12.04. I run it manually from the command line in the evening, when I want to lock the keyboard/mouse but still leave the screen active. When I come back the next ...
2
votes
1answer
2k views

How to change lock screen shortcut for Ubuntu 12.10 ?

Right now, CTRL + ALT + L locks the screen but I want to make it WINDOWS KEY + L as the shortcut, how can I do it ? Thanks
3
votes
1answer
284 views

Lock screen turn off and on : Goes to a loop asking to enter password to unlock- then turns off again.

I recently updated my laptop from 12.04 to 12.10. And now, whenever I lock screen with "CTRL+ALT+L", the screen locks, and monitor turns off. But within 30 seconds, it turns on and asks for password. ...
0
votes
1answer
122 views

After resuming my laptop it is unlocked for a while before locking

When I close my laptop lid and it is suspended, when I open it again it is resumed but without showing the lock screen which is set to come up. It resumes with access to web pages or programs that ...
0
votes
1answer
414 views

Switch User, Logout, Lock Screen--All Broken

At various times, which I can't pin down exactly, my 12.10 with Unity fails to lock the screen after timeout, fails to log me out when I click Log Out, fails to switch users when I command it, fails ...
3
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0answers
213 views

ubuntu 12.10 lock-screen unlockable with old ldap password

I have an ldap server that serves Ubuntu clients and there is a problem when unlocking the screen after a user has changed their password. Initial login works as expected: the user can log in with ...
0
votes
1answer
82 views

Some indicators are missing when unlocking the screen

It happened on my old PC and it still happens with the new one, with a fresh Ubuntu 12.10 installation (Unity). When returning from a screen lock (I couldn't say if it can be replicated in other ...
6
votes
1answer
425 views

What is wrong with this method of using an alternate lock screen background?

I have recently been trying to separate all three wallpaper states that are all the same as default. They are: Unity Greeter Lock screen Desktop All of them have a wallpaper, and as default the ...
1
vote
1answer
556 views

PC freezes after long period of inactivity (~> 30 min) [duplicate]

My Ubuntu system is configured to turn off the screen and lock itself after 10 minutes of inactivity. (System settings ---> Brightness and screen lock). If I leave the PC for about 10 mins or 15 mins, ...
2
votes
1answer
3k views

How to re-enable lock screen?

Once I disabled the screen lock using a command that I can't remember. Now I want to re-enable the screen lock (via Ctrl+Alt+L) but I don't know how. If I look at System Settings → Brightness and ...
5
votes
3answers
608 views

How can I use code or a script to lock my screen programmatically in Lubuntu?

I want to write code or a script to lock the PC when my C++ program receives a specific command from Ethernet. Is there any way to show the Login screen from the command line? I want to lock the ...
1
vote
1answer
357 views

GNOME 3.6 lockscreen from Unity

I would like the GNOME 3.6 lockscreen (GDM 3.6.1) to be called from Unity. I am not a expert, but my impression is that the lockscreen is part of GDM as opposed to gnome shell. If this is true ...
1
vote
1answer
512 views

Why does the screen refuse to lock after I installed LXDE?

I have a computer, I think it's running GNOME (it's running whatever the default is; I have the Unity panel,) and I installed LXDE for use on another user, but after installing LXDE, it will no ...
1
vote
1answer
281 views

Mouse cursor lag after lock screen, 64 bit 12.04

Recently I have noticed that when I return to my computer after it has been "locked" for a while, the mouse pointer has significant lag. The cursor position appears to only update a few times a ...
2
votes
0answers
30 views

Personalized wallpaper picture should not show in lock screen [duplicate]

Possible Duplicate: How do I change the wallpaper in LightDM? I have been trying to find an answer to this, but it doesn't seem to be possible to find someone who has had a similar issue, ...
1
vote
1answer
207 views

Screen not locked after suspen (run from terminal)

I have just found a answer to my question "How can I hibernate/suspend from the command line and do so at a specific time and a relative time?". The thing though is that on many occasions the resume ...
6
votes
2answers
1k views

Replacing xscreensaver with gnome-screensaver, problems(Xubuntu)

I found this helpful question Replace xscreensaver With gnome-screensaver (Xubuntu) but the executable gnome-screensaver-preferences can't be found. So I'm not sure what to do, to get ...
2
votes
0answers
513 views

How to enable lightdm as lock-screen in ubuntu 12.10?

How to set lock-screen to lightdm logon? Now the lock screen is ugly. I googled and said it was carried into ubuntu 12.04 already. But I can't found this feature even in 12.10 now. Anyone can help or ...
2
votes
1answer
945 views

Gnome-classic lock screen no password prompt [closed]

I have ubuntu 12.04, on a Dell Inspiron 14r, Intel HD 3000. I set on the Power settings, "When the lid is closed: Do nothing." The password prompt worked just fine when i closed and opened the lid. ...
2
votes
0answers
726 views

Screen will not lock automatically 12.10 [closed]

Since upgrading to 12.10 I cannot get my screen to lock automatically. I am using GDM at home and LightDM at work and neither will lock automatically. However, when I issue CTRL + ALT + L on either ...
1
vote
0answers
70 views

How to run script when locking screen and end it when user type in password?

What I am trying to do is to run a script while screen is locked. Can somebody guide me through it?
3
votes
1answer
4k views

How to enable new lock screen on gnome 3.6?

I'm using Gnome 3.6 (PPA) on Ubuntu 12.10 But I don't get the "new" lock screen. Users reported new lock screen are available now. GNOME lock screen (screensaver) is missing music controls How to ...
1
vote
2answers
243 views

Can I lock screen after move mouse in lock screen?

I lock my computer. Accidentally the mouse moved. Then the lock menu was shown by the computer. Can I lock it without input the password and lock again?
3
votes
1answer
414 views

“dm-tool lock” doesn't lock my session

When I use dm-tool to lock the screen for userA, I can log in as userB and then use dm-tool to switch back to userA's session without having to enter a password. Is that the expected behavior? If ...
2
votes
0answers
244 views

Can I make the lock screen image span two monitors?

I've got my desktop background spanning two displays, and I want the lock screen to show the same thing. Can I set the lock screen to span just like the desktop?
3
votes
1answer
2k views

GNOME lock screen (screensaver) is missing music controls

I have a custom Ubuntu 12.10 configuration (started out as a minimal installation of Ubuntu 12.04 with a number of other packages such as Gnome Shell selectively installed via apt-get and then ...
6
votes
1answer
2k views

Making gnome-screensaver auto-lock in XFCE

gnome-screensaver has been vastly simplified for major version 3 and no longer supplies the preferences dialog. It is now only useful for locking the screen and providing an unlock dialog. I use ...
6
votes
3answers
2k views

How to run script after resume and after unlocking screen

In Ubuntu 12.04 LTS, I would like to run scripts after resuming from suspend, and after unlocking my desktop. These need to run as my user, and with access to my $DISPLAY. In particular, I would like ...
0
votes
1answer
218 views

Wake up from screen off (like Windows and Mac)

Is there a way to configure Ubuntu such that it doesn't require 2 keystrokes to wake it up from the state where the screen is disabled after being absent, but a simple touch on the touchpad suffices ...
2
votes
1answer
207 views

How can I programmatically block user input for a given time?

As a person working in computer science working offline to avoid facebook and thelike is not always (meaning hardly ever) possible for me since I mostly have to be online to work. I have tried ...
2
votes
3answers
3k views

Locking with USB drive [duplicate]

Possible Duplicate: Lock and Unlock from USB disk (pendrive) When i use Windows, there is a program I use called Predator that locks my PC when I remove a certain USB flash drive. It then ...
1
vote
0answers
101 views

Computer responds slowly when screen is locked [closed]

When my computer is locked, regardless of it timing out after 10 minutes or by me pressing CTRL+L, it takes forever to activate it. It also appears as if the time it takes is linear to the time it as ...
7
votes
3answers
5k views

How to turn off screen (DPMS) together with locking session in KDE?

First of all, I'm aware a similar question for GNOME is asked here: "Switch off laptop backlight when locking screen". Objective I would like to turn off my screen on locking the session for power ...
0
votes
2answers
119 views

Display wakes up unexpectedly without activity on Ubuntu 12.04

When I use lock screen with ubuntu 12.04, all applications are hidden and a simple window asks me to enter my password to unlock the screen. After a while of inactivity, the screen goes black. ...
6
votes
0answers
1k views

Set wallpaper in the Lock Screen [duplicate]

Is there an app or some way to set the desktop wallpaper as viewable when only logged in, and to set another when logged out or locked? I've tried Ubuntu Tweak, but it only does the login wallpaper, ...
1
vote
0answers
33 views

System locks up at login after latest update on 12.04 [duplicate]

Possible Duplicate: I can't boot into a usable system after updates. What should I do? For starters, I am a noob when it comes to Ubuntu and Linux but I am hopeful that I have the light ...
1
vote
2answers
829 views

Why is the gnome 3 lock screen not displaying?

I installed gnome 3 recently and was expecting the new lock screen, but when I lock the screen I'm displayed with the 'old' version: How do I get the lock screen to appear like the one displayed ...
38
votes
7answers
18k views

How do I lock the screen from a terminal?

I am using Ubuntu 12.04. Is there any way to lock the screen or session from a terminal command or script? are there any changes happen in 13.04 ?
0
votes
0answers
35 views

12.04 lock screen wont change to my wallpaper [duplicate]

Possible Duplicate: Why does LightDM only show a custom wallpaper on the login screen if I have selected one of the default wallpapers? I did a fresh installation of Ubuntu 12.04.1, ...
1
vote
0answers
228 views

Only see wallpaper when resuming from lock and closed lid [closed]

Running Ubuntu 12.04 Unity with kernel 3.4.0-030400-generic on a laptop, when I lock with ctrl + alt + L and close the lid, then open the lid, I expect to see a prompt asking for password, but instead ...