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Manager (GDM) is a program which used to provide Ubuntu's graphical login screen until Ubuntu 11.10; since then it has been replaced by LightDM.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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Black screen/Distorted image on screen when laptop lid open Ubuntu 15.04 GDM (No any previous answer helped me)

I get black screen or distorted image when i reopen my laptop lid. I am using Ubuntu 15.04 Gnome version official download. My laptop Lenovo Z-5070 & also i get nothing when i pressed CTRL + ALT ...
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10 views

User switching broken in 14.04

I just upgraded to 14.04. I have an nVidia graphics card and am using the nVidia driver (proprietary, tested). I am using gdm as I don't light the look of lightdm (also, I have two monitors and it ...
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8answers
28k views

12.04 hangs at “checking battery state”

My 12.04 system hangs at "Checking battery state". At this stage, no commands work eg: Ctrl+Alt+f1, or Alt+f5. I ran recovery mode, and ran the following commands: sudo mount -o remount, rw / sudo ...
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0answers
14 views

Gnome GDM with nvidia driver + intel graphic problem

I have a problem with GDM (in lightdm i dont have this problem), when i install the nvidia drivers, if im in lightdm display manager i can search in hardware details my graphic card, but when i change ...
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0answers
15 views

Gray background at login

The background of my login screen is always gray. I installed gdm as my login manager after seeing my wife's login screen. The gdm login screen is cool-looking IMHO so I asked ASKUBUNTU how to get ...
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1answer
7k views

Setting up the GDM Theme

I'm using Ubuntu 12.04 with Gnome Classic (no effects) and because of the fact that some system options have disappeared with the new system release I've been struggling with this for a while and ...
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0answers
29 views

How to get XScreenSaver to lock screen on wakeup on GNOME?

I am wanting the same thing as I did here XScreenSaver Lock Screen, except for now that I am running Ubuntu GNOME 15.04, with GNOME Shell, and GNOME 3.16, things are slightly different, as the answer ...
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4answers
14k views

How I can change the GDM login screen wallpaper?

How I can change the GDM 3.6 Wallpaper? I dont mean the desktop background, but the Wallpaper at the login (GDM 3.6). Thanks Thank you for your answer, I know exactly what you mean. Recently I ...
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4answers
8k views

How do I recover when Compiz crashes?

Often compiz will crash and leave the keyboard useless. Normally I drop to the console and restart GDM. Is there a solution where I can start Compiz back up without losing everything in the current ...
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0answers
23 views

Get nvidia driver to work in gdm OR fix workspaces in lightdm

I have a lenovo with two GPUs, intel and nvidia. The problem is that if I set gdm, the driver doesn't work, and I can't switch to high performance mode. If I change gdm and select lightdm, that ...
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0answers
27 views

Ubuntu 15.04 Upgrade / LDM Issue / 219 / Black Screen

I am kinda a new in Linux/Ubuntu and the problem which I am facing now is way above my skill/knowledge: After upgrading Ubuntu from version 14 to 15 I cannot run my OS. It seems that the issue is ...
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2answers
1k views

Disable Accessibility in login screen

There's a funny joke going through my class: Wait for a colleague to leave his laptop and restart the laptop / change user. Then, at login screen (GDM), enable all possible accessibility features and ...
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1answer
5k 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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0answers
1k views

How can I use the recovery console to start a session step by step? [closed]

If you select "Recovery Console" at the GDM login screen, you are presented with a terminal screen in the top corner of the screen and the usual GDM background. I'm trying to diagnose a problem which ...
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0answers
49 views

Blank screen & Unable to use tty1

I have this strange problem on and off; I have experienced it 3 times in the past 4 months. I have Ubuntu 14.04 on a SSD external drive which I always carry it with me to use my system in any of my ...
2
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0answers
14 views

Smart lock like on Android?

Is it possible to configure either LightDM or GDM to automatically log in when my laptop is connected to a certain WiFi? Or even better, to check my location regardless of what WiFi I use?
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1answer
2k 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
51 views

Gnome 14.04 NVIDIA Driver issue

I was using Ubuntu with Unity and lightdm, where the NVIDIA driver did work, before I switched to the Gnome flavour. Now the issue I'm facing is that I can no longer use any NVIDIA driver with my ...
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0answers
15 views

Can't log in to Gnome after disk clone

I recently cloned my hardisk containing my /home partition and have now started booting via the clone. Unfortunately when I log into Gnome I am booted back to the login screen after about 10 seconds. ...
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0answers
50 views

Ubuntu 12.04 suddenly only boots into tty1

I've read through about 20+ threads where others had the same thing happen, however NONE of the solutions I found worked for me. Some were not even possible to try or didn't apply. I'm really stuck ...
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0answers
56 views

Ubuntu 15.04 - Buggy gdm? Cannot type passphrase, input devices aren't detected

Before going, I updated my Ubuntu 15.04 (with Gnome shell, if that matters) laptop and it said some problems were encountered. In the past, I simply ignored it and went back to work, as I did last ...
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2answers
41 views

Can you have a desktop environment without a display manager?

The following article nicely explains the differences between a display manager, a window manager, and a desktop environment: What is the relationship between Unity, Gnome, Gnome 3, Compiz, Metacity, ...
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1answer
93 views

Gdm with nvidia-331 and nvidia-prime causes a black screen at boot

I'm on an Asus UX51vz laptop, which has RAID0 SSD's and an nvidia 650M graphics card. I installed lubuntu instead of ubuntu-gnome because lubuntu still has a RAID0 compatible alternate install ISO. ...
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0answers
323 views

Stuck at “starting version 219” on Ubuntu Gnome 15.04

I know this question has been asked before, but I have tried the solutions, and they have not worked. First, I found this website about it. I tried the solution it gave: sudo systemctl enable ...
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1answer
23 views

gdm subprocess paste was killed by signal (Broken pipe)

root@saimon-System-Product-Name:~# dpkg --install /home/saimon/Downloads/gdm-2.20_2.20.10-0ubuntu3_i386.deb (Reading database ... 165751 files and directories currently installed.) Preparing to ...
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3answers
867 views

Cannot Log In to Gnome 3.16 Dekstop

I have installed Gnome 3.16 on my Ubuntu 15.04 (previously updated from 14.04) via: sudo add-apt-repository ppa:gnome3-team/gnome3 sudo add-apt-repository ppa:gnome3-team/gnome3-staging sudo apt-get ...
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0answers
52 views

Ubuntu 14.04 GDM Login Banner, with User List Disabled

I've seen several posts and absolutely no replies (or rather few helpful ones -- even seen a few stating to "use LightDM") on this issue. We use GDM instead of LightDM due to a bug/feature in LightDM ...
3
votes
1answer
262 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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2answers
32 views

There isn't /etc/gdm/gdm.schema

I read some guides on GDM (I want to create an invisible user in GDM login screen) but they refers to a file called /etc/gdm/gdm.schema that there isn't on my computer. This is the content of my ...
2
votes
1answer
74 views

Stuck on splash screen, does not progress to login manager

My login manager stopped loading, for no apparent reason, instead tty7 was a black screen I could type into but with no effect. I tried several variations of service lightdm restart service sddm ...
0
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1answer
148 views

Set resolution for GDM on 15.04

All the current guides on setting the resolution at login are outdated. Most of them suggest using an xrandr command in /etc/gdm/init/default. Problem is, it doesn't seem to work in 15.04 because ...
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1answer
48 views

GDM does not display session, or top row icons

I switched recently to the Gnome desktop environment. I was running Xubuntu, but got fed up with the bugs so decided to install Gnome-Shell. All was fine until I removed Xubunt and Xfce in an attempt ...
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0answers
18 views

My sudoer can not login using GUI

I only have one sudoer and it can login into the terminal or through GUI terminal. But I can not use it to log into the GDM login screen. Any possible causes?
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0answers
87 views

Login Loop on lightdm but not gdm

One of my user accounts is getting a login loop on lightdm but not on gdm. Does anyone know why this might happen and what I may be able to do to log on to the account using the lightdm display ...
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0answers
35 views

Black Screen after login

Hello guys i just installed ubuntu 14.04 and i had a hard time full of problems anyways as i thought problems had finished i restarted after update of software and tried to login but i had a black ...
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0answers
120 views

gdm login screen orientation Ubuntu GNOME

I use Ubuntu GNOME 15.04, and probably this issue can be applied to 14.04 and 14.10, too. I use Ubuntu Gnome with vertical orientation for the screen since my device is often used for tablet (Surface ...
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3answers
4k 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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1answer
548 views

LightDM and GDM login loop. Ubuntu 15.04 Gnome 3

At first the GDM worked just fine but all of a sudden I lost the ability to login. I can still get to my desktop using startx (sound doesn't seem to work when I do that but it might be a by-product of ...
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0answers
51 views

Problem with running full screen apps in gnome shell with wine

I've an ubuntu 14.04 with gnome shell, gdm, wine1.6. Some apps doesn't start after launching just turning into minimized mode. If I click on the icon around 100 times the app starts(but it's ...
2
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0answers
57 views

Set a different password for unlock to my sudo password

I am running a single-user Ubuntu install. When I enter the password to unlock my screen after suspend/timeout, it is the same password I use for sudo - my user password. Is there any way for me to ...
9
votes
4answers
41k views

How to restart only missing/invisible mouse pointer/cursor?

For some reason, the mouse pointer on my Ubuntu 10.04 PC disappears after the computer is woken up from suspend. That PC is missing a keyboard, so I can fix this by logging via ssh, and issuing: ...
2
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5answers
7k 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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0answers
16 views

ubuntu 12.04 falls back to login or no icons in gui [duplicate]

after hours of searching for solutions i am quite confused and frustrated now. None of the solutions here helped. This is what happend and what i did. Suddenly after days of offline the 12.04 ubuntu ...
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1answer
4k 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 > ...
2
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1answer
368 views

Why does GDM start in TTY2 and TTY7

I have Ubuntu 15.04 and GNOME 3.16 installed. This PPAs are enabled: deb http://ppa.launchpad.net/gnome3-team/gnome3-staging/ubuntu vivid main deb http://ppa.launchpad.net/gnome3-team/gnome3/ubuntu ...
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1answer
92 views

“Your system is running in low graphics mode” error

I'm quite new to ubuntu. I recently downloaded pycharm for python development. The fonts on the pycharm editor looked broken, so I was googling for a fix. I stumbled upon this stackoverflow thread and ...
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0answers
62 views

Terminal GDM session

How would I create a session file so that when I login using GDM it just launches a terminal session (No windowing, just a plain terminal like in Ubuntu Server)?
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3answers
4k views

How can I make a script run automatically after gdm login and logout?

I have a setup where my users log on using ldap and it works just fine. I want to run a script after my users login (its a script that will detect which groups they are in and map network shares ...
2
votes
1answer
1k views

Ubuntu freezes when gdm starts [closed]

I have Ubuntu 10.10 (upgraded from 10.04) I was browsing in Firefox yesterday, then the PC suddenly did a reset Once it restarted, everything went normal until gdm begun showing. Then everything ...
11
votes
5answers
88k 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?