LightDM (Lightweight Display Manager) is a Display Manager for the X.org X server.

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X Server command running in current processes

When I run top command on my Ubuntu machine, I get one of the lines as this: /usr/bin/X :0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch in the 'COMMAND' column. Can anyone explain ...
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381 views

Login Screen Doesn't Appear Automatically, need to press Ctrl+Alt+F1 and then Ctrl+Alt+F7

I am new to Ubuntu, used Mandriva for years but that was a long time ago. I recently installed Ubuntu 12.04 on a HPtx1000. Everything was working fine but recently when I boot up I don't get a login ...
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822 views

Ubuntu 13.04 returns to login screen when logging in & update problems

In an attempt to fix the problem, I uninstalled lightdm and gdm is now the default. But I experience the same problem with gdm. When I try to reinstall lighten, I receive: WARNING: The following ...
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2answers
4k views

Intel Haswell strange graphics and boot issue

I build a new system with a Core i5-4570S CPU and I use the internal graphics card. I can Install Ubuntu 13.04 without problem and everything seems to work fine, but during boot and when I turn the ...
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1answer
1k views

Black Screen on Login 12.04.3

I've recently installed a fresh version of Ubuntu 12.04.3 Desktop. At login screen, everything is black except for my mouse cursor and blinking underscore at top left. I can hear the Ubuntu startup ...
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77 views

Why this upstart job is preventing lightdm from shutdown or restart my notebook?

in order to have a permanet ssh tunnel running I set up the following upstart job in /etc/init/ssh-tunnel.conf: # ssh tunnel - simple personal ssh tunnel description "simple personal ssh tunnel" ...
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1answer
474 views

Why I cannot shutdown or reboot from lightdm?

I am unable to reboot or shutdown from lightdm. When I click on the button "Shutdown" or "Reboot" in the pop-ups simply nothing happens. I cannot find nothing wrong in /var/log/lightdm/lightdm.log ...
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2answers
1k views

Changed my display manager to lightdm-gtk-greeter. Now I can't login

Last night I edited the default-display-manager file and changed my default display manager from lightdm to lightdm-gtk-greeter. Then I edited the lightdm-gtk-greeter config file and changed the ...
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1answer
45 views

Problem logging in ubuntu and opening launcher

Today I installed kubuntu (out of a mis-understanding) then tried to restore back to ubuntu using phychocats method but now I have too many issues. a) When I turn computer or it says that it is ...
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142 views

Could not write bytes

I just installed Ubuntu 12.04, then I installed kde-plasma-desktop, and chose lightdm as the main display manager. When I rebooted, I got a black screen with could not write bytes: Broken pipe. I ...
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14 views

How Do I Disable Alert Sound At Login Screen? (LightDM?) [duplicate]

When starting up my Ubuntu laptop, there is an alert sound that comes on the login screen. The screen that lists the users and I enter my password on to get to my desktop. Even with a headset ...
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447 views

Ubuntu Opens in Black Screen Using Lightdm But Working When Using GDM

Last time I installed lm-sensor (a package to know CPU Temperature) and restarted my system. $ sudo apt-get install lm-sensors $ sudo sensors-detect $ sudo service module-init-tools ...
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4answers
2k views

Not able to login through GUI in Ubuntu 12.04

I'm unable to login through GUI. On typing the correct password, I get a black screen and back to login screen. However, when tried with tty1 I was logged in. Then I tried reinstalling lightdm and ...
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1answer
135 views

Can't resume after hibernation

I tried to hibernate using pm-hibernate but when I start Ubuntu again I can't get to login screen.but when i tried to login lightdm keeps restarting and keeping me from login . please help me? I'm ...
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41 views

Getting a blank screen with the mouse when i re-log in

10 so any help you can give will be very useful I'm using an HP G62 laptop with intel HD Graphics card and an intel i3 Quad-core processor. When i first boot my laptop, i can login just fine and work ...
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1answer
3k views

How to add 'awesome' selection in LightDM?

I installed awesome using apt-get, and after installation finished, I logged out to lightdm. But there is no selection for awesome, only Unity and subtle (since I recently installed subtle). What ...
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102 views

lightdm login screen disable mirroring

By default, on a dual monitor setup lightdm seems to mirror the monitors on login. Is it possible to configure the lightdm so that it enables both monitors but only shows the login screen on one of ...
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178 views

Unity Fails to Load

I recently installed Gnome 3.8 to play around with it. I thought it would only add it to my session manager, but it also made it default and began using the GDM instead of LightDM. Then, things got ...
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193 views

Lubuntu: .desktop shortcut works on the desktop, but doesn't from the menu

I've created a simple shortcut.desktop in my Lubuntu 13.04 /usr/share/applications: [Desktop Entry] Type=Application Name=shockwave Icon=/home/zane/Pictures/Evil Decepticons.png ...
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437 views

Change lightdm display resolution on the console

I am booting from the Lubuntu live-desktop-CD but the resolution doesen't work on my PowerPC Mac G4. I can go to the Cconsole with Ctrl+Alt+F1 Is there a config file for lightdm that I could change ...
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3answers
1k views

How do I change the login manager's keyboard layout?

I have a netbook with an AZERTY layout. I've changed it to "bépo" to try it, but now I've reset it to a french layout. While all the apps have taken the change into account, Ubuntu's login manager ...
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1answer
845 views

Can't use lightdm-webkit-greeter

I'm trying to use lightdm-webkit-greeter instead of the default unity-greeter on Ubuntu 13.04. First I installed the greeter: sudo apt-get install lightdm-webkit-greeter Then I ran this command to ...
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283 views

Lightdm doesn't load on boot

I'm using Ubuntu 13.04 and since yesterday lightdm doesn't load on boot. Ubuntu loads normally but there is no UI just this cursor _ blinking. I tried in console(Ctrl + Alt + F4):sudo service ...
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372 views

How to get lightdm login to start freerdp session?

I'm building a minimal Ubuntu 13.04 system because of a specific need. I don't need a full desktop experience and just a login prompt and once you login an RDP session is established via FreeRDP. I ...
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1answer
187 views

How do I get the session option for KDE in the login screen? (installed kde-full)

I've installed the package kde-full in Ubuntu 12.10. As I know I should be able to switch to KDE on the login screen, after it is installed. However, I only see two options: Ubuntu 3D Ubuntu 2D ...
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833 views

Ubuntu 12.04 Unity: Black screen with cursor only, when external display is connected before booting laptop

Whenever I connect an external display to the DSub port of my laptop before booting into Ubuntu, something goes wrong in Unity to cause the exact same problem as described here: After logging in, ...
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713 views

12.04 - Screen glitches / freezes after “Lock Screen”

Ubuntu 12.04, 3.5.0-36-generic kernel through LTS Hardware Enablement stack. HD4600 GPU on top of an Intel Core i7-4770. When I use the "Lock Screen" feature of the desktop, sometimes I will go back ...
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28 views

Why does the log in screen appear after logging in? [duplicate]

In my Ubuntu 13.04, from the last few days, I am facing a weird issue. Sometimes my log-in screen is appearing even after logging in. I reinstalled Ubuntu-desktop & Lightdm, but I'm still facing ...
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144 views

Close Lightdm in Ubuntu 12.02

Should I install original Nvidia drivers, for my Nvidia 8200. When i start installation, it asks me to close xserver. Only way to close it is use the command : "sudo service lightdm stop",because, ...
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2answers
1k views

How can I revert ubuntu settings after gnome-shell install

I have Ubuntu 13.04 32 bit. Recently, I installed Gnome 3 because I wanted to try something new. It looked and felt awful, so I removed it via ppa-purge. Unfortunately, some of my setting were ...
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4answers
21k views

How do I kill the x-server?

Every time I try to kill the x-server, sudo service lightdm stop so that I can install the latest Nvidia drivers, I get an error message. stop: Unknown instance: What am I doing wrong?
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ubuntu GUI freezez after sleeping

Whenever my laptop sleeps (when I close my lid), After I open the lid again I find the the GUI has frozen. The only way I could fix this is by stopping lightdm via the tty and restarting it again ...
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103 views

Problem at boot while starting lightdm

Since some days I'm having the following issue. When system try to start X to run lightdm it fails, the displayed window says that the system seems unable to recognize all the devices, after that it ...
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1answer
280 views

no login screen after 12.10 ubuntu update

i am running dual boot os machine including windows7 and ubuntu. few days back, i did update to 12.10 version, and at that time i was using gnome fallback desktop environment. while doing update, i ...
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2answers
102 views

How much is Ubuntu 13.04 related to/depends on Gnome?

I noticed that Ubuntu Unity (13.04) uses a lot of gnome related packages, even with no added stuff to its configuration. In a first install of Unity, I messed up with my configuration because I tried ...
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2answers
5k views

Ubuntu 13.04 - can't login to Unity, keep going back to login screen with all users

today I've updated openssl and libssl (automatic update). After reboot I can't login with any user (even with Guest or new one) into X. I've tried with installing gdm, gnome-session-fallback - no ...
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107 views

Launch Chrome with a very minimal Window manager

So i'm setting up a box running Lubuntu and i want it to run a news website with Chrome browser on startup and with a very minimal window manager (no desktop icons,no panel...). Is there any way to ...
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23 views

sent to greeter when shutdown/reboot

Firstly I apologize if this is a duplicate as I have searched for a while with no luck both on here and using google itself. My problem is that whenever I choose shutdown or restart from my unity or ...
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1answer
447 views

Wrong resolution for Lightdm/GDM on Ubuntu 13.04 using HDMI

I've tried all the solution I could find on the matter so far, but the error persists. My problem is that the login screen (both under gdm and lightdm) runs with the wrong resolution, even though all ...
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2answers
3k views

login loop ubuntu 12.04

Today I restarted Ubuntu 12.04, after installing some packages and having updated firefox. When I came in the login screen, I typed my password. After about one second processing, the screen blacked ...
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81 views

Reset LightDm's Theme

I changed LightDm's theme using Ubuntu-Tweak on Ubuntu 13.04. LightDm did not show the changes. Instead, LightDm lacks a background (solid purplish-pink) and uses odd-looking icons. I decided to undo ...
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140 views

No unity shell , no unity panel and no dual monitors

I did something terrible this morning you can see here. Now that problem was fixed , apt was working fine and so was the update manager . after installing all updates , I rebooted. And I could not ...
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1answer
819 views

Graphics problem on new lubuntu install

I've just install Lubuntu 13.04 32-bit on an old machine. When I boot, I essentially get no GUI. I have a cursor, and very poor 8-bit colour background, but no windows or buttons etc. I believe ...
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1answer
45 views

How do I change the caption of the “Login” button?

When setting up a user for login without a password (i.e., by adding the user to the nopasswdlogin group), a "Login" button appears in the LightDM screen. How do I change the caption on the login ...
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418 views

Cannot boot normally, without restarting lightdm (or gdm)

I had a problem precisely described here: http://www.webupd8.org/2013/01/ubuntu-lightdm-black-screen-when-using.html, black screen with blinking cursor instead of login screen. I've switched to gdm ...
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1answer
811 views

MDM doesn't automatically start

I just successfully installed mdm on 13.04 with this guide, replacing but not uninstalling lightdm: How can I replace LightDM with "MDM"?. However, when I first rebooted, I just got a blank ...
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641 views

Black screen after Ubuntu loads (LightDM)

So, I have this problem, LightDM doesn't appear, after Ubuntu 12.04 loads, it shows a black screen with a white bar on the command line. I know the problem is LightDM, because last time I used Ubuntu ...
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1answer
2k views

How to install pantheon-greeter in 13.04 Raring?

Refer here: QUESTION Those are the exact step I did in my install - a raring x64 server install + all needed xorg packages to run a GUI + MATE 1.6. Basic lightdm + unity-greeter is flawless, as well ...
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174 views

restart lightdm after gnome-session-quit

We are using a login script to refresh a profile from a saved state every time a user logs in. When they log out our script calls for gnome-session-quit --no-prompt and brings them back to the login ...
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996 views

installing mir on ubuntu 13.04

I've recently tried to install Mir desktop on my ubuntu 13.04 I changed the /etc/lightdm/lightdm.conf to the following: [SeatDefaults] type=mir #user-session=ubuntu #greeter-session=unity-greeter ...