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Manager (GDM) is a program which used to provide Ubuntu's graphical login screen until Ubuntu 11.10; since then it has been replaced by LightDM.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

I don't have a login screen. Doing sudo service slim start brings me to a login screen which then turns blank. Essentially I do enter my credentials but apparently log into nothing. sudo service ...
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Lost virtual terminals + low graphics mode

First, I had low graphics mode. I logged into tty1 and realized that i had lost sudo as well. How any of this happened I have no idea. To take back sudo, I did following in root shell using grub ...
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65 views

Installing Nvidia Graphics drivers on Ubuntu-GNOME 16.04

I am using Ubntu-GNOME 16.04 with GNOME 3.20 When I install Nvidia graphic drivers by sudo apt-get install nvidia-361 , I am facing the following problems. During the installation of Nvidia-361, it ...
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25 views

Boot process stopped after installing gdm

I have installed gdm to replace lightdm, but after rebooting, I am greeted by a black screen. Switching to another TTY, shows me the following message: A start job is running for Hold until boot ...
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17 views

Ubuntu virtual terminal exits too quickly for me to type

I've been having a nightmare trying to install an NVIDIA GPU on my desktop computer (Ubuntu 14.04). I inserted the card and tried following various instructions online, but that did not work and I got ...
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42 views

lightdm and gdm not working in Ubuntu 14.04

I have a problem with Ubuntu 14.04, the graphical mode can't started in the log screen : starting LightDM display manager [fail] then I tried to use gdm, starting gnome display manager fail, i don't ...
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120 views

No graphical user interface after update on 16.04

After an update from Ubuntu GNOME 15.10 to 16.04 my gui completly crashes after GRUB. If I try a normal boot, the gui freezes there, where the LVM needs the password to decrypt the systemdrive. I can ...
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137 views

Black screen after login Ubuntu Gnome 16.04

I had just updated to Ubuntu gnome 16.04 from 15.10. After reboot, I type password and click Login but just show a black screen, the desktop was not loaded. I just go to the desktop by type ...
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16 views

gdm session without setting default

I have a locally created session to let users login to a special session at times (i've called it /usr/share/xsessions/remote.desktop). The problem is that they normally login to gnome ...
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43 views

Can't login to my account with neither gdm nor lightdm

What I've tried: I am able to login as myself via tty I can login as guest (graphical) Installing gdm and using that instead of lightdm (see title) ~/.Xauthority is empty and owned by me. ...
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1answer
19 views

Gnome Terminal window is stuck on top but not really there

There is a terminal left floating on top of my other windows: It doesn't show if I take a window screenshot. I can't Alt + Drag - that drags the window below. I can't Alt + Tab - Terminal is not ...
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38 views

Gnome Displa settings (primary) on ubuntu 15.10

I installed gnome today to my ubuntu 15.10 and I noticed that when I try to make configurations, I cannot set my external monitor to primary display. When I try to change "External monitor to ...
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1answer
215 views

How to change login screen background Ubuntu Gnome 15.10

I'm using Ubuntu Gnome 15.10 and my gdm version is 3.16.2. I know that there are a few different threads here and articles at other websites about customizing the login screen in Ubuntu older ...
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36 views

Ubuntu 15.10 Gnome Desktop Stucks At Loading Splashscreen

Upon trying to boot Ubuntu 15.10 as usual I found it was impossible to load pass the loading splashcreen, my default desktop environment is GNOME and upon some research I have tried several approaches ...
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109 views

Windows always open very small and in top-left corner of screen, even when full-screen

I'm a very new Gnome-desktop/X developer, so please be kind! We develop a "kiosk" style digital signage product that I'm porting over to Ubuntu from CentOS-6/Gnome-2 and CentOS-7/Gnome-3. The basic ...
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40 views

LightDm fail - I can't get the login screen - Some packages can not be installed Depends libcheese7 and libcheese-gtk23

I can not get the login screen. I have tried the suggestions given in the forums, such as uninstall lightDm or gdm and install again, but it does not work. I get the following message when I try to ...
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23 views

I can't stop starting gdm with rcconf tool why?

I can't stop starting gdm with rcconf tool why? In rcconf tool it is unselected but still starting gdm after reboot? I don't know why... it is ubuntu 14.04 server amd64 Please help me
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71 views

Is there a way to use a text-based login screen, instead of clicking on usernames?

I'd rather type my username in to login than click on it. I can't, however, find a way to configure which usernames are displayed on the login screen. What's the best way to go about this? I'm using ...
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38 views

How to fix Ubuntu from logging into weird “simple GNOME” as I call it

I was trying to fix ubuntu because the wifi was not working. It wouldn't allow me to control networking, and it said I had no privileges to so this. Lately, most of the stuff on my ubuntu OS screwed ...
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1answer
155 views

gdm/lightdm: can't login, but startx works

I just ran apt dist-upgrade. I had ubuntu 14.04. Things went smoothly, but after reboot I can't get past the login screen. I tried both GDM and lightDM, but running startx from the terminal works. ...
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21 views

can't change from gdm and monitor swaps after login

I ran updates yesterday. This morning, the login screen had changed from lightdm to gdm (i think) and three seconds later the screen went blank. I couldn't even get to ctrl alt f1 terminal. I did a ...
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118 views

GDM not starting after installing GNOME 3 on Ubuntu Server 15.10

First thing after installing Ubuntu Server 15.10, I got all the updates and installed GNOME 3.16.4: sudo apt-get update sudo apt-get upgrade sudo apt-get install gnome-shell But after a reboot I ...
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1answer
38 views

How to switch off gdm?

Because after update - gnome and gdm are not working, and I need to switch off gdm as display-manager. Now am logged in with bodhi-linux ... how can I disable gdm for to log in into ubuntu to proceed ...
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63 views

Lightdm is giving me “The system is running in low-graphics mode”

I was trying macbuntu on Ubuntu 15.10 and due to some bug in it, i wasn't able to login into the system as login screen was coming again and again even after feeding in the right password. So, i ...
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221 views

Email on failed login attempt?

I was wondering if it is possible to set it up in such a way that on a failed login Ubuntu will send me an email? And of course if the computer is not connected to the internet when the attempt ...
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1answer
47 views

Why am I getting gdm and a bunch of packages in the list of apt-get autoremove?

Of late, I've done a lot of configuration changes on my Trusty laptop (14.04 LTS). Firstly, I installed gnome-shell, did all updates and migrated to the LTS enablement stack. After that, I added the ...
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206 views

Change the login screen theme in Ubuntu Gnome 14.04

Can anyone show me a way to change the default login screen theme with the ones available at http://www.gnome-look.org ? For eg, this http://gnome-look.org/content/show.php/HexLogin?content=169840 ...
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43 views

Cannot update /var/lib/gdm/.ICEauthority after restoring /var directory

I have tried the following for getting this error fixed. Boot into "Recovery Mode". Input the root password for maintenance mode. Go to the /var/lib/gdm folder (cd /var/lib/gdm). Remove the ...
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115 views

Cannot make it to login (gdm/lightdm bugs) after Nvidia driver update tentative

I used my girlfriend's computer which runs on Ubuntu 15.10 (wily) and wanted to update the Nvidia GPU. I did install the last driver released on the Nvidia website corresponding to this Geforce GT720. ...
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65 views

Ubuntu 15.10 Alt Above Tab shortcut for Guake

I can't get Guake to use <Alt>Above_Tab (or "`", or sometimes called tilde?) for hide/show shortcut. I first disabled the original actions of both <Super>Above_Tab and <Alt> ...
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1answer
86 views

How to make GDM have a limit of incorrect password attempts before action is taken?

I am currently running Ubuntu GNOME 15.10 with GNOME 3.18, though I used to (a long while back) run Windows 7, and though Ubuntu is better in most ways, there is still a feature lacking or at least a ...
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2answers
318 views

Ubuntu 14.04 stuck in login loop after update, nothing seems to help

I updated my ubuntu 14.04 after it was being unused for 4 months. The updating took enormously longer time than usual, and after that the computer was very slow. I rebooted the computer and now I ...
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38 views

Won't suspend-screen locks with black screen and cursor

When I leave my computer alone and the screen blanks after X minutes. Then instead of going fully blank, then suspending after the set time I'm left with a black screen with my cursor. If I touch the ...
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2answers
243 views

15.10 lightdm broken - gdm works

After some updates to my system lightdm seems to be broken (can't get a session with lightdm to work, always ending up in low graphics mode at boot). If I chose gdm it however works. But I would like ...
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149 views

Using i3wm on Ubuntu Gnome 15.10

I am having trouble figuring out how to use i3wm on my installation of Ubuntu Gnome 15.10. The only way I've got it working was through stopping gdm with systemctl stop gdm in text-only mode, and then ...
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80 views

Desktop not responsive after ubuntu-gnome-desktop installation (Ubuntu 15.10)

In order to use gdm instead of lightdm I followed the instructions from this post I could then use gdm but my desktop (meaning the background area) is not responsive anymore and shows the login ...
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1answer
173 views

Two different login/lock screens

I have Ubuntu 15.10 installed and when I first start my computer it gives me the really nice looking ubuntu lightdm login screen but anytime I lock the computer I get the really nasty looking gnome ...
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88 views

How do I disable GDM's automatic screen locking *after a virtual terminal (VT) change*? It's too buggy and never works correctly

Every so often either my touchpad stops behaving or some program (Firefox or QEMU) freezes my system and I have to switch to a virtual terminal to fix it (merely switching to a VT and back fixes the ...
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0answers
12 views

how do I stop gdmdisplay

I am getting about 65000 log entries per hour from gdm. it generates the standard message: WARNING: GdmDisplay: display lasted 0.050808 seconds We do not use gnome on this machine and I want to get ...
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2answers
82 views

How to make 4 equally sized windows in corners of screen in GDM?

I recently saw this answer to a great question, and I wondered, is this also possible on Ubuntu GNOME 15.10 with GNOME 3.18 and GDM, as well as on Compiz as the answer to that question shows? But the ...
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91 views

Lightdm not working properly in Ubuntu 14.04.3

Recently I installed ubuntu-gnome desktop and then purged the same after trying and I have chosen my default desktop manager as lightdm and there is nothing like gdm as I have purged it also.The ...
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27 views

Black screen with cursor after login ONLY FOR ONE USER

When I login in to gdm, I get a black screen with just a cursor (tested, stays for 10 mins). However, I made a test user and I can log into that account without any problems. I use nvidia-restricted ...
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1answer
130 views

How to disable 'Tap to click' on the login screen

Due to lots of chocolate cake getting into my computer my touchpad doesn't work very well (along with the rest of the computer) any more, so I have disabled 'Tap to click', however this seems to have ...
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1answer
102 views

On screen keyboard for locked screen

As I am having some trouble at the moment with the locked screen and entering my password, I was wondering if there was some sort of on screen keyboard which could be displayed to me on the locked ...
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0answers
12 views

Is log-in back into (encrypted) installation possible?

Here is 15.04 with encrypted home-partition and because of system-d I was kicked out of gdm and then I was not able to log-in back into desktop. So then I changed the password to an empty password ...
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1answer
182 views

yoga 2 pro won't boot after update to ubuntu 15.10/ GDM

After upgrading to Ubuntu 15.10, my mouse pointer was no longer visible. As a remedy, I installed GDM as suggested in some posts here. That worked, but now (first full boot after installation of gdm) ...
2
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1answer
9k views

gdm not working with Ubuntu 15.10

I just upgraded to 15.10, and everything went smoothly. One of the first things I did was install gnome-shell, and switch from lightdm to gdm. However, when I restarted, after an initial purple Ubuntu ...
2
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0answers
135 views

gdm and fluxbox on ubuntu 14.04

unable to run fluxbox with below package installation on ubuntu 14.04. I have mini iso installed ubuntu 14.04 running on embedded board. I am trying to configure fluxbox with below minimal package ...
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1answer
24 views

Building custom live Ubuntu Gnome 3.12.2 based, only for GDM: authentication failure

I'm building a custom live Ubuntu Gnome 3.12.2 based, Only if I create a new user, set password and add him to sudo group, setting by dpkg-reconfigure GDM ad default greeter, obtain a black screen ...
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1answer
32 views

GDM fails to launch xfwm4, but lightdm succeeds?

I use GDM and usually run an XFCE4 session. Suddenyl, if I attempt to boot in using GDM, the following symptoms appear> 1) the GDM background does not go away 2) windows from two applications (remains ...