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Manager (GDM) is a program which used to provide Ubuntu's graphical login screen until Ubuntu 11.10; since then it has been replaced by LightDM.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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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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50 views

Multi display issue with Ubuntu GNOME 14.04

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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52 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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28 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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26 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
61 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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131 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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42 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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203 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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67 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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16 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
49 views

Display issue on remote machine using GDM X11

I am remotely logging into a ubuntu machine thorugh SSH(MobaXterm) using Gnome desktop remote environment from my windows PC. I am having trouble with one of our video application in displaying video. ...
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1answer
443 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
66 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
61 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
127 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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40 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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74 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
145 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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102 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
123 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
33 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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68 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
16 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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17 views

Starting gdm without nolisten TCP option

Can I start Ubuntu 13.04 gdm without -nolisten TCP option?
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71 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 ...
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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
151 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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25 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 ...
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78 views

where is recent user list in gdm3 stored? I want to clear the list

I tried removing: /var/log/wtmp /var/log/ConsoleKit/history the completet gnome tree in /var/lib and accountservices nothing helped. The user list ist still there. We want to have a fresh box ...
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4answers
11k views

Ubuntu 13.10, nVidia Optimus graphics card appears as a secondary display

There are many problems with Optimus, but currently two main problems prevent me from logging in. First; installing nvidia drivers via official repositories results in a blank screen during login. ...
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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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1answer
1k 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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1answer
1k views

How to apply theme?

I'm trying to apply the following theme: http://gnome-look.org/content/show.php/H4k3r?content=156969 I have a .themes folder in "Home" folder but Ubuntu Tweak Tool won't detect it. Running 13.04
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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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1answer
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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454 views

Ubuntu 13.04 boots into terminal login instead of desktop

I just installed 13.04 on my desktop yesterday. After updating all the drivers all that was left was my printer driver. Ubuntu told me I needed to get the driver off the website so I did that. I ...
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451 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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12 views

Gnome Display Manager [duplicate]

My gdm login screen is look like this: not like: How to make it took like the second image?
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179 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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1answer
80 views

Why does the KDE login screen still lead me to GNOME?

This all occurred after I (1) Built/installed Ardour 3.3 (2) Used the automatic updater to install suggested updates and (3) Installed wine, tried to open the configuration file, everything stopped ...
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203 views

Stuck at login screen gdm

I using Ubuntu 13.04 with gdm and xfce4. If i try to login after sleep or enter bad password then enter correct , it says "Currently logged in" but won't continue from there. P.S. Sorry for my bad ...
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1answer
828 views

How to install gdm3setup?

I found this one thing called gdm3setup and it seems like its what I want but I have no idea how to install it. I went on the github website for the project and for Ubuntu it has a set of .deb files ...
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185 views

OAFIID:GNOME_FastUserSwitchApplet Error

I recently lost my GNOME desktop manager after uninstalling PulseAudio (see: GNOME/GDM not starting). After getting the desktop environment back up, I was presented with the following Error Message: ...
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1answer
3k views

GNOME/GDM not starting

NOTE: While working through my issue and documenting it I discovered the solution, but have decided to post this in case another person has the same/similar issue (see bottom)... After uninstalling ...
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0answers
20 views

Get the text that is shown on ttyX from ttyY for a bug report

I have found a reproducable bug that crashes my x server. During the crash, there is a call trail shown after that I am send back to GDM.This would be valuable information for a bug report. When I'm ...
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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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1answer
44 views

Accidentally chose wrong login manger during upgrade

I ended up choosing gdm as my login manager during my upgrade from 12.04 to 12.10. Now all I have is the boring default gray gdm login. How can I change it back?
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black screen after installing ubuntu and reinstalling GDM [duplicate]

I installed ubuntu 12.4 and after trying to boot up it gave me the "system running in low -graphics mode" error. So i tried to reinstalled gdm to fix this problem and it did fix that problem. But now ...
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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 ...