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Manager (GDM) is a program which used to provide Ubuntu's graphical login screen until Ubuntu 11.10; since then it has been replaced by LightDM.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

I just install Ubuntu Gnome 14.10 on my laptop. It started just fine, and I installed updates by: $ sudo apt-get update $ sudo apt-get upgrade $ sudo reboot It's now stuck at Startup with following ...
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9 views

No window decorations after clean-up, only wallpaper [on hold]

I cleaned up my system (10.04), rebooted and was left with only the desktop background.. It looks like metacity, gdm and xorg are having issues. I did three extra things I don't usually do.. Organize ...
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15 views

GDM and LightDM running at the same

I have a fresh install of Ubuntu 14.04 LTS. I have installed some GTK-related packages and GNOME but I am not using GNOME neither as my window manager, nor I want to use it as my display manager. I ...
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24 views

GDM3Setup has broken my login screen [closed]

I'm fairly new to Ubuntu, only having just installed it a few weeks ago. Since then I have been using the Gnome Shell desktop environment. I recently installed GDM3Setup to customize the login ...
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50 views

Can't login GNOME Ubuntu 14.04.1 64bit using GDM after some packages installation

First of all I checked some threads on GDM fail and found there NO solution to my problem. I have installed new GNOME Ubuntu 14.04.1 LTS 64bit. At this moment GDM works perfectly, and NVidia drivers ...
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30 views

Scale image for lock screen Ubuntu Gnome 14.04

I have an image I want to use for my lockscreen on ubuntu gnome 14.04 but an important portion of the image cuts cut off (it's a calender). I've tried resizing the image to make it smaller but the ...
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1answer
27 views

cannot interact with gnome

I am running Linux 14.04 with Gnome. My Laptop just spontaneously lost all ability to interact with gnome - no toolbar at the top, no icons on the left, work space switching does not work, and no ...
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1answer
33 views

Two Monitors, login does not show up - Ubuntu 14.04

I'm trying to use Ubuntu 14.04 on my PC. I have two monitors and an ATI Radeon HD 4770 Video Card. The thing is, after installing Ubuntu, and after reboot, the login screen does not show up, and the ...
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why WindowMaker is not starting via lightdm/gdm/kdm/etc.?

Since long time i use WindowMaker window manager (for nostalgic and performance reasons! ), but recently i got struggled on starting it via lightdm (Ubuntu’s default?),gdm, kdm, etc. When i try, it ...
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1answer
47 views

Can't login from GDM

I've upgraded to Gnome on my Ubuntu desktop, however I have to login in with tty and run startx, but when the computer sleeps, I have the gnome login screen and it doesn't accept my tty password... ...
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1answer
95 views

Changing X display manager

On my Ubuntu 14.04 there's gdm and lightdm installed. Is it recommended to have both installed? How can I check which one's active and how can I change them? I have some troubles with the Ubuntu ...
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2answers
60 views

Can't boot after installing gnome

I just installed gnome by typing sudo apt-get install gnome-shell, and used gdm as login shell and my PC can't boot. It stayed in purple screen with Ubuntu logo! What can I do?
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2answers
36 views

Ubuntu 11 display manager startup problem

Several days ago we had a power failure. When I rebooted my Ubuntu Linux box, it initially came up displaying the F in the center of the screen but never went to the login. Instead it goes to a black ...
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1answer
33 views

GDM without Accessibility Dialog

I would like to disable the accessibility icon on the top right corner of GDM. I tryed insert some keys at the gconf, but thoses commands gave me no results: gconftool --type Boolean --set ...
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2answers
1k views

What to do when nothing seems to fix Ubuntu 14.10 stuck after log in?

So I run Ubuntu 14.10 on HP Pavilion g6, i5 and with Radeon HD6500. Yesterday Ubuntu crashed and since then I can't get anyfurther than the log in screen. Ubuntu simply stucks with only the background ...
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38 views

Cannot set system default Desktop Environment

I am using Ubuntu 14.04. Recently I completely uninstalled Unity and lightdm, and installed Gnome 3 with gdm. Now I can log into Gnome Desktop by selecting Gnome from log in screen. However, if I ...
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1answer
36 views

Boot does not go ahead Gnome icon

I'm using Ubuntu Gnome 14.04 LTS. Yesterday I uninstalled evolution and it's components using the command sudo apt-get remove evolution* which freed something around 40 MB data. After which I tried to ...
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460 views

Several attempts to customize GDM login screen in Ubuntu 14.04 LTS failed. What are the ways to customize it?

I installed GDM on Ubuntu and set it as default via sudo apt-get install gdm. It looks like this( I took screenshots but can't trace where was it saved as it was not available in default directory ...
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70 views

Need to type in password when I change to tty and back on 14.10

I just upgraded Ubuntu from 14.04 to 14.10. I use autologin for my user, gdm, and gnome. Recently, whenever I switch to tty and then back, it requires me to type in my password four times with a ...
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21 views

exlude users from display manager [duplicate]

I just did a fresh installation of Ubuntu 14.04. To not break anything, I created the default user during install, but I neither need nor want it. I added my usual users (UIDs > 10000), which work ...
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1answer
116 views

How to enable autologin but still require password

I am running Ubuntu GNOME 14.04, using gdm display manager and gnome-shell environment and I need to achieve the following behaviour: after boot, a selected user is automatically logged in, but a ...
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232 views

Ubuntu GNOME 14.04 NVIDIA drivers problem

I have an Acer Aspire 5755G with two video cards : one integrated (Intel) and one dedicated (NVIDIA GeForce GT 540M). I tried multiply ways to install various types of NVIDIA drivers, but everytime, ...
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46 views

Problems with Ubuntu 14.04

I have some problems with my Ubuntu 14.04 installed on Lenovo think-pad t420 notebook. I'm using recent Nvidia drivers and gdm desktop manager with classical gnome theme. Periodically, my system stop ...
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2answers
232 views

Where is the login screen wallpaper for GDM stored?

In 14.04, there is a really nice sort of stone texture to the background of the login screen. Where does that texture live on the disk? I have searched the unity greeter packages.
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21 views

How to reset Ubuntu boot up screen

after installing gdm, i cant right click on my desktop anymore and wallpaper changed to default(cant change) and the option menu when boot up is not orange but it is grey I searched for solution but ...
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47 views

Ubuntu 14.04 in vmware

I install ubuntu 14.04 in vmware 10. But it does not show graphical environment. When I run sudo startx, desktop that is shown has five parts (five duplicate desktop). sudo gdm and sudo lightdm does ...
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95 views

Changes Made in Dconf Editor don't take effect?

I am using Dconf to remove myself from the login screen by enabling disable-User-list in org.gnome.login-screen but that don't work. Also, I have tried changing the logo, no luck either. I have also ...
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1answer
562 views

probleme with gdm

I have a problem with gdm , when I run this command sudo /etc/init.d/gdm start I got this message /etc/init.d/gdm: 79: /etc/init.d/gdm: syntax error: "fi" unexpected (expecting "}") So, can ...
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33 views

How to create a custom failsafe session

I have created a custom session (in /usr/share/xessions/mysession.desktop). I don't want this session to be saved as a default session (don't want users to get the question "Do you want to use this as ...
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183 views

Howto force gdm to start unity by default for first time logged in user?

I was to try to do setup for maxi Ubuntu installation containing Gnome, Unity,KDE, Xfce, LXDE, Edubuntu,...Eclipse, Netbeans, ICD..., octave, QTOctave, Scilab/Xcos, Open Modelica,.... for a ...
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38 views

“Software & Updates” missing from GDM

When I type "Software" into the GDM search box nothing appears. Has this moved to another application? I recently did a dist-upgrade due to a linux-headers update being held back. Since then I ...
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1answer
559 views

How can I change the KDE lockscreen?

I want gdm, lightdm, something--anything--other than the default one in KDE. I'm not talking about the login manager or anything, that I have set to gdm. I'm talking about the lock screen with the ...
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93 views

How do I add login session to gnome session (gdm) in Trusty 14.04

While lxde display manager seems to list all the window managers I have on its initial splash screen the one for gdm lists only a small number. I would like to add selection desktops which are seen ...
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64 views

Upgrade to 14.04 results in system without desktop environment

Yesterday I had a perfectly stable and responsive ubuntu 12(.10?) on my dell xps3. I made the mistake to say yes to the update to 14.04. Installation went fine, but after reboot I was looking at 5 ...
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36 views

Is restarting lightdm likely to cause any serious problems?

I frequently mess things up and I have to restart the computer. Recently, I started restarting lightdm / gdm, as it is quicker. Is that a sensible thing to do? I use the following command (in tty): ...
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2answers
135 views

Do logins by the gdm (or lightdm) user in auth.log mean my system is breached?

Please look at this auth.log (from Ubuntu 14.04) I have provided and tell me who this gdm user is and why there are all these unauthenticated logins? I am freaked out; please help! Here's the ...
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1answer
666 views

Starting gdm (manually or during boot) doesn't do anything

At my wit's end here! I can't get gdm to run. Not just not at boot-time, but at all. There's no error message. tty7 stays blank. It doesn't seem to attempt to start an X server. It doesn't log ...
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0answers
610 views

Change GDM in ubuntuGNOME 14.04.1

I've been searching the web and can't figure out how to do this, only that I can do this. I recently installed a fresh install of the ubuntu GNOME 14.04 flavor and love it so far, especially with all ...
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1answer
238 views

ubuntu 12.04 to 14.04 distribution upgrade pauses “configuring lightdm” … “Default display manager:” gdm, lightdm

Apologies if I overlooked this in the docs somewhere. Let me document something just incase it was missed. My upgrade from 12.04 to 14.04 pauses on a package configuration. The first time I did ...
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99 views

Ubuntu 12.04 freezes when switching to lightdm

I was changing the theme in my Ubuntu 12.04 to Mac OS theme, constantly installing, logging in and out, rebooting when trying to fix things along the way. While I was doing a reboot, it froze, for the ...
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364 views

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
40 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
1k 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
2k 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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1answer
93 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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800 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
66 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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494 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
3k 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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128 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). ...