GDM is the Gnome Display Manager, responsible for launching an X session, as well as displaying the login screen for the user.

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11
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8answers
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How do I prevent GDM from running at boot on Ubuntu?

I have a Ubuntu (Hardy Heron) sever that currenlty boots up and runs gnome. I would like to make it so that when it boots it only goes into text-mode (e.g. the x server never starts) I tried: sudo ...
6
votes
2answers
2k views

What is the correct way to prevent non-root users from issuing shutdowns or reboots

Let's say that you have set up a multi-seat system for use in a school or library, allowing GDM to launch multiple X sessions to run simultaneously with different users/keyboards/monitors. By default ...
5
votes
3answers
5k views

How can I configure gdm to allow X connections to other servers/workstations?

I have an issue on all new installs of CentOS 6.2 on my network. Connecting to remote machines using X11 gui software fails for reasons associated with the xauth. I'm not sure how to diagnose but have ...
4
votes
1answer
4k views

How can i auto-login with Fedora 15? So that it never ask it on reboot automatically logs in, as defined

In the earlier versions of Fedora there was a way to use gdmsetup for auto-login. Now in Fedora 15 I can't auto-login anymore. Anyone know how I can do this? I cannot figure out how to stop it from ...
4
votes
3answers
4k views

How to boot into command-line mode and keep other services unchanged

I want to configure my Ubuntu installation to boot into a command-line prompt instead of the Gnome Desktop Environment. I ran the below command to effect this: sudo update-rc.d -f gdm remove It ...
4
votes
1answer
798 views

How to change the GDM default background wallpaper to my customized wallpaper or solid color?

I was trying to change the Ubuntu 11.04 GDM default background wallpaper to solid color such as black. However it's not working; here is what I've tried so far: From the terminal: xsetroot -bg ...
3
votes
2answers
4k views

How to automatically add a protected key to ssh-agent on startup?

I am using gdm to start awesome wm via .xinitrc. I like awesomes usability and gnomes integrity and so far most of the startup programs work fine but i am fighting with ssh-agent. When starting gnome ...
3
votes
4answers
914 views

How to implement a volatile “user profile”

I want to set up a Linux machine such that when a particular user, named student, logs out, their /home directory is wiped clean and reset. Basically I want to perform these actions when the user ...
3
votes
2answers
658 views

Zsh login shell in Ubuntu

I have a fresh install of Ubuntu Natty. I changed my shell to zsh. When I login, it does not appear to source my ~/.zprofile file. Does gnome not get executed in a login shell of your chosen shell? ...
3
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0answers
286 views

Choose between multiple keyboard layouts for different users in GDM3

I am trying to set up a computer with multiple users each with different preferred keyboard layouts. The biggest sticking point right now is allowing each to log in comfortably. GDM used to offer a ...
2
votes
5answers
14k views

No login prompt displayed after updating Ubuntu 10.04, broken gdm

So here's what happens: I updated my system the other day, was prompted for a reboot for the update to complete but was in the middle of working so I delayed it until after I was done. I reboot and ...
2
votes
2answers
1k views

restart gdm at linux terminal

Sometimes the Ubuntu 10.04 the gui will freeze and the only thing I can do is move the mouse. I can't interact with programs and I can't change to a different virtual desktop. All I can do is press ...
2
votes
1answer
13k views

GDM Won't Automatically Start After Boot

Ubuntu 10.04 Hi guys. I'm not sure why but quite recently, my ubuntu desktop started bringing up the command prompt login screen after booting. I want GDM to start up by default. I can manually ...
2
votes
1answer
318 views

How can I disallow normal users on Ubuntu Lucid 10.04 (multi user NIS setup) from shutting down the system?

In the past, I was able to set "SystemMenu=false" in gdm.conf, to prevent normal users from being able to shut down the system. In ubuntu 10.04, this does not work. How can this be done?
2
votes
1answer
948 views

Ubuntu Login Screen Reloads

I am trying to login to my Ubuntu desktop after updating a bunch of packages and rebooting. I know I am authenticating successfully but what seems to happen is that after I enter my username and ...
2
votes
0answers
32 views

Text rendering issues in Gnome Desktop Manager 3

I did an apt-get update on a debian 8 box and it really messed up my system. First of all, it changed my window manager to gdm3. The problem I have is that the fonts are some how messed up. When I ...
2
votes
1answer
2k views

ubuntu12.04 hangs at checking battery state

My 12.04 system hangs at "Checking battery state". At this stage, no commands work eg: ctrl+alt+f1, alt+f5. I ran recovery mode, I ran the command sudo mount -o remount, rw sudo dpkg-reconfigure gdm ...
2
votes
0answers
1k views

login after ubuntu 11.10 upgrade - failed to load session ubuntu

After Ubuntu 11.10 upgrade I'm unable to login via gdm or lightdm. Every time I receive error: "failed to load session ubuntu" Any help appreciated.
2
votes
1answer
443 views

A startup script on Ubuntu that only runs properly when ran manually

I'm trying to run a script on session start, so I added it to System -> Preferences -> Startup Applications. The script does run, but some of the commands inside don't appear to run at all. If after ...
2
votes
2answers
1k views

Xvnc4 started from xinetd only displays empty gray X screen

I'm attempting to setup an Ubuntu 10.10 box so that anyone can connect to port 5900 and be greeted by the gdm login manager. To do so, I added a vnc entry in /etc/services and I am starting Xvnc4 ...
1
vote
2answers
4k views

Linux: wmctrl cannot open display when session initiated via ssh+screen

I'm using wmctrl on an Ubuntu machine to manage windows from a script, that I run inside a (gnu) screen. If I start the screen session from the local machine, wmctrl works fine, including if I ...
1
vote
2answers
2k views

GDM guest session for Debian Squeeze

Every now and then I would like to give my home desktop or laptop to someone to check their mails or lookup something on the web while I am not watching them. I am using Debian 6 (squeeze) and was ...
1
vote
1answer
641 views

Ubuntu lost GNOME installation, cyclic dependencies when reinstalling GNOME

Take a look here first. After solving that problem, I noticed that KDM won't let me select GNOME session. I just have KDE and xterm. I reinstalled GDM and switched to it, but I still can't start ...
1
vote
1answer
1k views

I don't understand how GDM is starting

I'm on Karmic. I had no keyboard, so I enabled autologin and some other stuff over ssh to get x2x going. Now I can't find what I did. I'm trying to just start X and XBMC now. I don't need gnome. I ...
1
vote
6answers
592 views

Is it possible to log a user in a remote computer using ssh?

I want to connect to a server via ssh and log in (remotely) a user in X11 (gdm). A little context: I need to install a wine application in 30 computers, but wine require X11, there is nobody loged ...
1
vote
1answer
101 views

How to use Intel controller to run Kali GUI

I've gone through many tips and different steps at this point, and the Kali GUI will still not run. In fact, after installing bumblebee and configuring and restarting, my Kali goes straight to the ...
1
vote
0answers
160 views

How to set default keyboard layout for GDM 3.16?

I have two keyboard layout (Colemak and Qwerty). When I have logged into my Gnome session my keyboard layout is set to Colemak automatically. But for some reason I can't change the default GDM ...
1
vote
0answers
659 views

Ubuntu 14.04 gdm with multiple X servers doesn't work

I'm trying to launch 4 X servers with gdm on my fresh Ubuntu 14.04. /etc/gdm/custom.conf [debug] # More verbose logs # Additionally lets the X server dump core if it crashes Enable = true Gestures = ...
1
vote
2answers
1k views

How to change gnome session locale?

How do I change the default locale for my gnome session? I created /etc/default/locale-local with this content: LANG=pt_PT.UTf-8 LC_MESSAGES=en_US.UTF-8 and added this to /etc/pam.d/gdm3, ...
1
vote
0answers
63 views

How do I force gdm 3.6 stay on DISPLAY :0?

Every time I log out of my session, gdm moves to a different DISPLAY variable. Judging from /var/log/gdm, it rotates between :0 and :5. I'm finding no documentation on this logic. How do I keep gdm ...
1
vote
1answer
1k views

XMonad with GDM on Maverick (Ubuntu 10.10)

I'm using xmonad on Ubuntu Maverick (10.10) First of all I created a new Desktop Entry to make the xmonad session to be accessible from the GDM login screen, but after a reboot GDM doesn't start, and ...
1
vote
1answer
547 views

Connect to virtual KVM machine/VNC from Xorg

I have a main Ubuntu system and a virtual Windows system, set up using QEMU/KVM. So, I can start Windows using virt-manager and connect to it using a VNC client. But what I really want to have is a ...
1
vote
1answer
1k views

Ubuntu 10.04 upgrade: gdm-simple-greeter no seat-id found

Upgraded a machine straight from Ubuntu 8.04 to 10.04. After a successful upgrade, GDM shows no users on the login screen, with the error message: "gdm-simple-greeter no seat-id found" Users can log ...
0
votes
4answers
1k views

(Linux) More than one X Session with ATI Catalyst™ Proprietary Display Driver

I would like to start another x session but I can't do it anymore, since I installed the Proprietary ATI Drivers. Apparently it seems to be were the problem is coming from. Does anyone know how I can ...
0
votes
4answers
785 views

Possible to install Xmonad on Ubuntu separate from Gnome?

I just downloaded Xmonad from the repository on my Ubuntu 10.04 box, but when I log out and try to log back in using Xmonad instead Gnome, it doesn't work. I just get the login screen background ...
0
votes
2answers
6k views

Change default login manager on Fedora 18

I'm tired of GNOME's problems with my Fedora 18 instance, and decided to move on to another desktop environment. After successfully changing to Xfce, I still couldn't get rid of GDM which annoys me a ...
0
votes
1answer
1k views

How to set user picture on GDM?

I installed fluxbox on top of Ubuntu server, to get a minimal desktop installation. On the gdm login screen, I see a X instead of the user picture. How do I set this picture? What is the minimal ...
0
votes
1answer
64 views

Force XWindows Authentication

I start a process with init.d and want to be able to create GUI applications as child processes. Because of the early start of this process, the environment variables DISPLAY and XAUTHORITY are not ...
0
votes
1answer
641 views

Clear user login list of gdm3 on wheezy - where is it stored?

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 ...
0
votes
1answer
268 views

Triple-head works in GDM, but not in Gnome

I've got three displays connected via DVI on two different ATI cards on Arch Linux using the xf86-video-ati driver. All three are currently serving output, but one of my displays (the one on the ...
0
votes
3answers
389 views

Rogue X session bombing my CPU

Every time I boot I get the following process that is taking %99.3 of my CPU /usr/bin/X :0 -nr -verbose -auth /var/run/gdm/auth-for-gdm-EowSOU/database -nolisten tcp vt7 when I kill the pid I lose ...
0
votes
2answers
2k views

Why does gconf-edit not work to change the GDM icon?

So I have done some googling and experimenting to change the GDM icon (Ubuntu 10.04) and have found the following ways: UbuntTweak Replace /usr/share/icons/LoginIcons/apps/64/computer.svg with your ...
0
votes
1answer
96 views

Toolbars invisible after restarting gdm

If I'm inside gnome in Ubuntu 10.04 and I open up a terminal and type "sudo restart gdm" I get back to the login screen. When I log in however all the toolbars are missing. If I maximize a window then ...
0
votes
1answer
6k views

How to repair login screen without reinstalling gdm

I recently ran into an issue with my login screen switching to a default hi-contrast window management schema in Ubuntu, as opposed to the default dark colors. The problem (and a working, but ...
0
votes
1answer
6 views

Visual bug in GDM for Arch Linux

Whenever I boot into GDM, I get this weird visual tearing of the elements on the screen. I'm able to actually log in (by pressing enter and typing in my password) but the visual elements in the login ...
0
votes
1answer
87 views

shell environment setup for virtualenv/virtualenvwrapper

The question is about shell setup for virtualenvwrapper, an extension to virtualenv (python guide). Similar questions had been asked many times but with a lot with different answers: Environment ...
0
votes
0answers
108 views

How to set environment variables for a Gnome Wayland session

It seems that a Gnome Wayland session ignores the file ~/.profile. At least it is not working for me under a Gdm / Gnome / wayland session with Arch Linux. So the question is, what is the proper ...
0
votes
0answers
27 views

I can't login by XFCE4, but can by Gnome

My system is RFRemix 21 64bit (Based on Fedora) I use XFCE4 long time, also I use autologin in gdm. Today, when system was loaded I see login screen with username and password. I type it, some time ...
0
votes
0answers
124 views

Linux: Keyboard not reacting for some time after start of gdm or lightdm

I've been using Arch Linux for about 2 years now - and ran into a strange problem lately: After booting up my machine (Lenovo x220i), ending with either gdm or lightdm as the login manager, I am not ...
0
votes
0answers
219 views

What's the official way of programmatically changing the GDM login background?

I want to change the background of the GDM login screen on CentOS 6.5 and 7 to bring it in line with other branded systems, and so I have an RPM that delivers a background image into ...