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Manager (GDM) is a program which used to provide Ubuntu's graphical login screen until Ubuntu 11.10; since then it has been replaced by LightDM.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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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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22 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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82 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
2k 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
187 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
88 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
210 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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184 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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221 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
343 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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129 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
226 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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37 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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139 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
21 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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24 views

Starting gdm without nolisten TCP option

Can I start Ubuntu 13.04 gdm without -nolisten TCP option?
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89 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
226 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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31 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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124 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
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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1answer
3k 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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851 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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618 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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14 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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1answer
86 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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1answer
1k 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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253 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
6k 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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5answers
43k 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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4answers
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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1answer
493 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
157 views

How to completely remove broken GNOME/GDM installed on Ubuntu Server?

I have installed an Ubuntu Server. It obviously comes with no graphical interface. I tried to install one with: apt-get install xserver-xorg xfonts* gnome gdm Then I got an error message trying to ...
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480 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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657 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
98 views

little conflict between xorg-xserver and gnome-control-center?

In Gnome-Control-Center with 'Brightness and Locks' - suspending of screen is set to 30 minutes. But after 30 minutes Linux is then crashing and I have to reboot. Have then settled bug-report. Seems ...
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1answer
109 views

GDM Starting Twice?

Lately, I keep getting booted into low graphics mode (using Intel, I don't have a xorg.conf) and when viewing startup errors it says "Fatal server error: Server is already active for display 0" This ...
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1answer
64 views

12.04 still crashes - up to kernel 3.5?

when 12.04.02 LTS was installed with kernel 3.2 - there seemed to be no problem regarding gdm, x-windows and clamtk. ( I refer to link here: Why running clamtk on 12.04 with kernel-update of today ...
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1answer
2k views

How to configure splash screen after plymouth

I have configured my splash screen for plymouth - and it works perfectly. I've also configured the display manager (I'm using gdm). In between these two I get a very brief splash screen - a kind of ...
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3answers
201 views

Why running clamtk on 12.04 with kernel-update of today crashes the system?

I am performing clamtk - virusscan as usual (at a friends computer with 12.04 - updated today): sudo clamtk Then normal scanning of all files. When reaching certain file, it crashes with logout to ...
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1answer
2k views

Gnome 3.8 / gdm / Failed to load session “gnome-classic”

Installed gnome 3.8 from its official ppa. Installed gnome-shell gnome-shell-extensions and ubuntu-gnome-desktop. Installation went smooth. Also selected gdm as the login manager. THe only thing that ...
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1answer
927 views

13.04; frequent freezes under gnome-shell, gnome, unity

I just upgraded 12.10-->13.04 on my Dell Precision: Intel(R) Xeon(R) CPU E5-1620 0 @ 3.60GHz NVIDIA Corporation GT218 [NVS 300] (rev a2) (prog-if 00 [VGA controller]) I can login via gdm -- by ...
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0answers
872 views

cannot click in some windows, ubuntu 13.04 64bit

EDIT: I tryed both, lightdm and gdm. ''sudo restart lightdm'' helps temporarly. I cannot click in firefox until I start something else e.g. shell. But than the mouse cannot click anything outside ...
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1answer
241 views

Ubuntu 12.10 Gnome 3 Login Screen Bad position

Operating System and Config: I have Ubuntu 12.10 with Unity removed and installed Gnome 3 desktop. Everything works fine but... When I turn on PC for the first time and Gnome loads the login ...
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8answers
2k views

Keyboard layout reverts at every boot

I am using 12.10 with Gnome 3. I changed LightDM to GDM. When I boot up keyboard layout changes to default US layout. When I add another layout to end of list at Region settings my selected layout ...
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1answer
448 views

Lightdm doesn't work properly

I have gnome installed on my Ubuntu 12.10 and I am using gdm as default display manager. But the greeter for gdm is not working properly and whenever I try to switch back to Lightdm the GUI just ...