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

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Ubuntu is in command mode how to turn on the GUI mode again?

I have HP Probook 4540s with Radeon graphic card, I downloaded drivers from This site and installed those after reboot I couldnt see my launcher and toolbar but yes i could use few shortkeys, I looked ...
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0answers
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What is the “Light Display Manager” user account? [closed]

I installed Ubuntu 13.10 and suddenly I see a new user account to log in to (besides mine), called "Light display manager". Could someone explain why this account appears?
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0answers
159 views

After logging into Guest Account, my user's desktop customizations are gone

This is a weird one. Out of curiosity I had clicked on the Guest Session option at login, to see what it was like. Now, when I log into my original user, all of my desktop customizations are gone and ...
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1answer
1k views

low-graphics mode error in 13.04 with no graphics card [duplicate]

When I try to boot my computer, I get this error: "The system is running in low-graphics mode Your screen, graphics cards, and input device settings could not be detected correctly. You will need to ...
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0answers
25 views

LightDM login problem [duplicate]

Suddenly I am not able to login as usual, I just get kicked back to the login screen all the time. I haven't made any configuration changes, but there were some automatic updates installed before this ...
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0answers
46 views

xorg, jetty, and lightdm all crash my system when run

Whenever I start xorg my computer crashes. I am brought out to a black screen much like the one that it shows when I shut down my computer. After displaying this screen for awhile it kicks me out to ...
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1answer
247 views

Screen glitches or freezes after screen lock with Intel Video Driver

I'm running 13.04, and have an Intel HD 5200 display, using the Intel drivers. When the screen times-out and locks, most of the time one of two things happens: Either the current windows are still ...
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0answers
2k views

Invisible mouse

When I boot Ubuntu I can see the mouse cursor at the login screen but once I put my password is see this error could not acquire name on session bus I tried to Google the error but all I find is stuff ...
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0answers
33 views

Another way to fix “The system is running in low-graphics mode” error? [duplicate]

I began having the infamous "system running in low graphics mode" error after my daughter turned off the power so she could boot into Windows. Looking at the lightdm log in in /var/log/lightdm/ ...
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0answers
63 views

Adding Virtual Machine to lightdm

Is there a way for a virtual machine to start directly from lightdm? I have installed android in virtualbox which I want to add in lightdm for direct access. I am enjoying my Chromium OS from lightdm, ...
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1answer
657 views

Ubuntu Remote Login help

I'm trying to register a machine in the "Universal Client Configuration Service" so I can login remotely (via the login page for lightdm), however I'm not sure what to use in the "Server URL" field. ...
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0answers
41 views

Ubuntu doesn't open in graphic mode

My Ubuntu 12.04 LTS was working fine in Gnome mode, but I tried to login in user-defined mode. It worked fine, but now, when I try to login in Ubuntu mode or any other mode(Gnome, gnome-classic, ...
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0answers
30 views

Any Mechanical Drive Tweaks?

Noticed a couple of SSD-specific tweaks like putting log files to tmpfs, discard and noatime, etc. Was curious if such tweaks would also work on mechanical drives or be advisable? I noticed a little ...
0
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1answer
551 views

no GUI after normal update

After I finished working, I made the usual update that ubuntu every now and then ask to do. Please notice is update, I'm not upgrading the distro. After it finished, it asked for a reboot which I did. ...
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1answer
80 views

how to save while editing in /lightdm.conf

Hi I tried disabling guest account by editing lightdm and a bug sends me to it showing low graphics. I went I to termin and undid the change I made in /lightdm.conf but don't know how to save tbe ...
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0answers
113 views

How to prevent users from shutting down or rebooting from Unity and Lightdm in Ubuntu 13.10?

I'm trying to remove Shutdown/Reboot/Sleep (just want to leave the possibility to log-out) from the unity and lightdm menu on Ubuntu 13.10 but to no avail. I've already tried to apply polkit-1 ...
2
votes
1answer
2k views

Login loop with gdm and lightdm, startx works

I am running 12.10. Attempting to login via gdm lands me back at the login page. The behaviour is the same for when I switched to lightdm. Logging in with guest is fine, and logging in with a test ...
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votes
3answers
9k views

(13.04) lightdm crashing - black screen flashing cursor

I am using the 13.04 x64 release of Ubuntu on my PC and at least it works so far as it should. But suddenly the lightdm crashes during boot and even if I try to start it manually from terminal after ...
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1answer
103 views

Upgrading from 12.04 LTS to 12.10

I have Ubuntu 12.04 installed on my VAIO, alongside Windows 7. I know Ubuntu upgrades won't damage my Windows drive and I'm fine about it, but I've seen people saying 'Unity 2D removal' and 'purge ...
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2answers
2k views

Ubuntu 12.04.3 Graphics Issues: Broken Pipes, Reinstalled Xorg and Bumblebee

It seems I have a problem, and am only making it worse by following what I find online. I have a new Asus N550JV-D71 (not sure about the part after the dash, though I definitely know it includes 71). ...
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0answers
87 views

Gnome 3.8 Update Issues

I installed Gnome 3.8 about 3 weeks ago and it worked great! Just recently I updated and everything about the boot-up has been a little odd. Firstly, the boot screen wasn't the purple and orange ...
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0answers
33 views

Login screen loops on Unity, how to get out? [duplicate]

I understand that there are several questions discussing essentially the same thing in the past, and I have already looked through most of them. I have a Ubuntu 13.04 installation that was working ...
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0answers
61 views

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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1answer
587 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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1answer
846 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
5k 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
2k 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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0answers
82 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" ...
2
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1answer
797 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
50 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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0answers
172 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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0answers
16 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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0answers
577 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 ...
3
votes
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 ...
1
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1answer
153 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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0answers
43 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 ...
8
votes
1answer
4k 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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0answers
126 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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0answers
234 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 ...
0
votes
1answer
288 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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0answers
504 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 ...
5
votes
4answers
2k 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 ...
0
votes
1answer
1k 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 ...
1
vote
1answer
294 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 ...
3
votes
1answer
285 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 ...
3
votes
0answers
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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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vote
2answers
959 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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0answers
170 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, ...
2
votes
2answers
2k 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 ...