GNOME Display Manager (GDM) is a program which used to provide Ubuntu's graphical login screen until Ubuntu 11.10; since then it has been replaced by LightDM. You may still install it manually if you prefer, however.

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why is gdm not starting automatically?

I am running Ubuntu 12.04 LTS with all updates. At some point I experienced some trouble with LightDm, so after reading up on AskUbuntu I switched to GDM. No problems, except that I cannot get GDM to ...
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1answer
28 views

Only visible spaces seen?

I recently converted Ubuntu to Ubuntu GNOME by removing Unity and installing GNOME from the repositories and removed LightDM too. My account was working, but the rest of the family user accounts are ...
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1answer
75 views

Installing Gnome 3, should I use gdm or lightdm?

I'm currently using Xubuntu 14.04 and I wanted to try out Gnome 3, so i started installing it, and during the installation it is asking me what display manager should I use by default: gdm or lightdm. ...
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1answer
52 views

How to autostart synergy on ubunutu 14.04?

I am using synergy to share mouse and keyboard. I would like it to start automatically and have used the tutorial for this here. I am new to ubuntu and cannot find this menu: System Menu > ...
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24 views

After installating GDM Ubuntu 12.04 hangs while booting

I have installed Ubuntu 12.04.1 64bit Desktop on my system. After fresh OS install, i first installed gdm, (Gnome Desktop Manager). I selected GDM in reconfigure window and restarted the desktop. ...
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1answer
34 views

How to chabge GDM Login theme in ubuntu 12.04 lts

I have ubuntu 12.04 lts and I changed my login screen to GDM by typing sudo apt-get install gdm how do I change the theme in ubuntu 12.04? I downloaded a theme using gnome-look.org. Where do I ...
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0answers
155 views

Ubuntu Gnome 14.04, change resolution on GDM login screen/system wide?

Under Ubuntu Gnome 14.04, Gnome 3.12, I'm running with a different from my maximum resolution. After login, the resolution is set fine, and when I log in after locking the machine, the resolution is ...
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1answer
24 views

default-display-manager error

I was using gnome desktop manager, then I changed the file ./etc/X11/default-display-manager to nothing, so the login would be made via command line. The problem is that there's a file created in ...
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103 views

Ubuntu 14.04 start too slow but shutdown too fast

How do I do speed up Ubuntu like in this link - Disable service: http://ubuntuforums.org/showthread.php?t=89491 Bootchart
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2answers
391 views

GDM and Lightdm don't work after update; KDM is ok

After updating Ubuntu (apt-get update, apt-get upgrade and apt-get dist-upgrade) last Tuesday, GDM stopped working, and the startup hangs on the Ubuntu logo. Lightdm also don't work (same happens). If ...
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36 views

What does “unknown code ovk 48” mean?

When I log in after update from 13.10 to 14.04, lightdm and gdm display unknown code ovk 48, I can log in without problems (lightdm requires that I press return after the message is displayed). ...
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1answer
154 views

Why gnome desktop won't start after I log in? After installing Variety.

I'm using gnome 3.10 on ubuntu 14.04, with gdm as my default login manager. Also, numix-gtk-theme and numix circle icon pack. For whatever reason, sometimes my system stops detecting wifi (even if ...
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1answer
73 views

How to get Gnome Shell to remember my display preferences?

I have a laptop. When I'm using just the laptop, I want to use the display (well, yeah, obviously) but when I plug in my monitor, I want to just use that monitor, not both screens. Every time I boot ...
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1answer
80 views

upgrade to 14.04 added lightdm to server edition

The update from 13.10 to 14.04 using do-release-upgrade seems to have added lightdm to my computer. On top of that, lightdm wasn’t even set up properly, nor do I want it set up. I prefer not to use ...
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0answers
342 views

14.04 Trusty Tahr LIghtDM No way to switch session

I installed Trusty on my laptop. I like Gnome Shell more than Unity. So I installed Gnome Shell via Software Centre. I have LightDM 1.10.0 installed on my system. Unlike the previous version it ...
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2answers
59 views

There is no /etc/gdm directory?

I'm using ubuntu 13.10 and trying to add some startup scripts to gdm login screen. I found 4 places in documentation of gdm to do so: /etc/gdm/Init /etc/gdm/PostLogin /etc/gdm/PreSession ...
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87 views

GDM is not showing all my available shells after upgrade to 14.04

I upgraded Ubuntu to 14.04. I have around 15 or so shells installed (unity, gnome, mate, lubuntu, cinnamon, chromium os, and a bunch of other random ones) On 13.10, I could see all of them with a ...
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1answer
170 views

lightdm doesn't start

Today when I started Ubuntu, it didn't start lightdm, showing a black screen. I changed to console Ctrl-Alt-F1 and tried to start lightdm manually sudo start lightdm It threw me to the graphic ...
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1answer
107 views

Can't switch between lightdm and gdm

I installed Ubuntu Studio 13.10 from a minimal CD, and then upgraded to 14.04. But since the cd install, I have been trying to change from gdm to lightdm. I have tried sudo dpkg-reconfigure gdm, sudo ...
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1answer
29 views

MDM is Not Saving Session Data .dmrc file

Am trying to replace LightDM with MDM in 13.10. Am able to install and configure MDM, but when I go to login the system tells me that the .dmrc file is being ignored. Initially there was no .dmrc ...
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0answers
66 views

GDM & Lightdm Not Working After xorg configured

I have an R9 280X set up & it was previously running successfully. Recently I installed latest drivers (both the beta & stable - not at same time) and ran the command. sudo amdconfig ...
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1answer
173 views

How can I enable screenlock without turning off the monitor? (Ubuntu Gnome 14.04)

Ubuntu Gnome 14.04 When locking the screen, my monitor/screen turns off immediately. I don't want that to happen immediately, more like after 30 minutes or so. Is that possible?
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3answers
6k views

Multi display issue with Ubuntu GNOME 14.04 [closed]

Fresh install of Ubuntu GNOME 14.04 with 3 displays (fglrx driver). I can correct the screens order in System Settings / Display but it is not saved when I close the session and reopen it. Screens ...
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0answers
133 views

How do I get lightdm to log me in when it freezes on Ubuntu 14.04?

I'm on Ubuntu 14.04 (somehow) and lightdm doesn't let me log in after I enter my password so I'm using gdm. gdm works fine. What happens is the password field disappears and I can't click on guest ...
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1answer
94 views

X keeps restarting without getting to login screen

I am running Ubuntu 13.10 in my PC. Two days ago, oneconf crashed while I was working and I had to restart the computer. Since then, I haven't been able to go past the black screen to the login ...
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29 views

how to boot system normally [duplicate]

I have serious problem with my ubuntu system. Yesterday, I installed gdm and set it default display manager, when I rebooted grub menu display I boot to normal boot but only black screen show.Please ...
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1answer
140 views

Black Screen appear after set default display manager gdm [duplicate]

Yesterday i install gdm and set it default display manager then l notice ubuntu is running but there is several lines appear on desktop when i want to shutdown system after i powered off system and ...
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0answers
309 views

Can't login to Ubuntu Gnome 13.10. Login screen doesn't appear

I had been using Ubuntu Gnome for over 3 months now, without any issues. Today, when I tried to boot the os, I couldn't see the login screen. Instead, it shows the Screen with Gnome logo and it isn't ...
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72 views

GDM resolution changed when screen lock

I am using Ubuntu 12.04 and GDM. However, when the system is idled for a while, it eventually ends up to lock screen. And the resolution is changed to lower resolution when I login again. I need ...
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650 views

Blank screen when trying to connect to VNC

I've installed on my VPS machine VNC-GNOME to remote access the graphical system so I've my Ubuntu (V 13.10) and I did this steps but I'm getting blank screen every time I'm trying to login This is ...
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0answers
88 views

Ubuntu GNOME 13.10 Unresponsive Login Screen/GDM

I am currently using Ubuntu GNOME 13.10, and I have hardly used it yet. I have installed a couple basic programs off of the Software Center, but nothing much. However, now, whenever my computer boots ...
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18 views

New windows open below visible one

Every time a new window is opened, gnome likes to force it below the current one so I have to go to the taskbar and restore it. I can tolerate a lot of stuff but I open new windows way too often ...
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0answers
67 views

Display issue on remote machine using GDM X11

I am remotely logging into an Ubuntu machine through SSH(MobaXterm) using Gnome desktop remote environment from my Windows PC. I am having trouble with one of our video applications in displaying ...
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1answer
1k views

Stuck at boot screen 12.04

I tried to install a lightdm greeter theme but after dissapointing results I chose to try gdm instead, which prety much reconfigured my desktop theme, so I chose to remove them both. Since the last ...
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1answer
114 views

Awesome does not create listing in gdm

I have installed awesome desktop from the terminal using apt-get. But it does not create a listing in the gdm during login. Is there any way to create a listing in gdm? Also I am not able to edit ...
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1answer
79 views

All display managers boot into Gnome Classic (No effects)

I've tried both gdm and lightgdm but no matter what I do, I get logged in to Gnome Classic (No Effects). The terminal's transparency is a nuisance here and I completely do not want to work on anything ...
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2answers
176 views

Forgot to install login screen after removing unity and installing kubuntu-desktop

First I must admit that I did something really stupid. I de-installed unity from my ubuntu 12.04 LTS to install kubuntu-desktop as I wanted to try out a different desktop environment. The problem is ...
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87 views

Stuck at login screen, help

i've ubuntu 13.10 , when i write my password , ubuntu wait for 3-4 seconds and then show the login page again this error didn't happen after updates, i'm still working to find many solutions but they ...
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0answers
118 views

GDM Autologin not working..

I removed lightdm since I was not able to login as it was booting to a blank screen. Hence I installed GDM and everything was fine. Now when I try to use the Autologin option through GUI interface and ...
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1answer
237 views

login screen not displayed after logout

I'm running Ubuntu Gnome 13.10 and I'm having the following problem. After booting my computer, gdm displays as expected and I can choose which account to log in to. However, if I then log out, I do ...
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0answers
112 views

Can't load GDM or Gnome

I've been using Ubuntu Gnome 13.10 for about 2 weeks without issue, but today, after restarting my PC, it got stuck on the Gnome splash screen. I managed to load my login screen by switching to ...
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1answer
187 views

black screen on booting

I've been working with Ubuntu on my lenovo for awhile. after heavy using I started to face the black screen when I reboot. Cursor at the top left blinking with the sound of rebooting. I still see the ...
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0answers
35 views

Ubuntu Precise — suspend wedges GDM — help!

I've been a very happy Ubuntu user for many years, and worked my way past any number of problems, but I've never seen anything like this. Recently I got a new machine and installed 12.04 Precise on ...
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105 views

How to end X session?

Is there a generic way to orderly end X session regardless of display mangager or window manager? More specifically, I use different windows managers for different users, and after reboot one user ...
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0answers
18 views

How to migrate gdm font setup?

I have purged gdm and switched to lightdm. This changed how my fonts look in X applications. Unfortunately, they did not get prettier. How can I have the same fonts in both or migrate settings from ...
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0answers
20 views

Starting gdm without nolisten TCP option

Can I start Ubuntu 13.04 gdm without -nolisten TCP option?
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0answers
84 views

Problems with gdm, sometimes not loading GNOME Shell

My current problem is quite hard to investigate, at least for me. Thing is that when I start my HP G72 notebook it boots ok, HP logo appears and dissapears and then, it depends, sometimes it shows ...
2
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1answer
2k views

Broken GDM in 13.10

I recently switched my 13.10 installation from Unity to Gnome Shell. I did that by installing ubuntu-gnome-desktop. Everything is working fine and I'm using LightDM, but I want to switch to GDM to get ...
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1answer
193 views

Tried replacing LightDM with GDM, now computer won't start

After upgrading from 13.04 to 13.10, I was having the problems described in this bug (ie couldn't mount a USB/CDROM and couldn't use GUI shutdown button) ...
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0answers
28 views

restarting gdm makes screen glitchy and annoying wifi issue

First issue is when I type "sudo service gdm restart" I get a weird glitchy screen, I can see the mouse cursor and the desktop is responsive, but nothing is readable and I can't tell where anything ...