Questions tagged [gdm]

GNOME Display Manager (GDM) is a program which provides Ubuntu GNOME's graphical login screen.

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How to disable GUI and only use terminal?

My laptop is running very slow so I thought about disabling the GUI and some preferred me to use this command to disable GUI sudo service gdm stop But using this command i am not abled to type ...
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1answer
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GNOME (GDM) equivalent to LightDM's “dm-tool”

In my old Ubuntu 16.04 installation, I had the command dm-tool switch-to-user <spouseusername> mapped to F1 so that my wife could easily jump onto her account on the family computer. Now ...
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Issues with Lightdm and gdm3 on ubuntu 20.04

I have been using ubuntu 20.04 since release, I started with gdm3 and then I got the infamous login loop error which I couldn't solve without switching to Lightdm. The issue is when I switch to ...
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GNOME Custom Desktop file with icon not showing

I see there are a number of questions regarding icons not showing, going through all of them, I have yet to solve my problem. First, I created a .desktop file according to this spec: [Desktop Entry] ...
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Login loop for user account (gdm3)

I can't login in my gdm3 usual session and it goes [in loop like there]. I made sudo adduser test, and things go just fine with that user. Before I got in that loop I did update/upgrade my system, ...
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GUI Icons in VLC Media Player become large when switching from dwm back to gdm

Basically, Title. I switched to dwm 6.2 (dynamic window manager) from suckless.org for a while to try it. When I went back to gdm VLC and some other applications (Krita and GIMP) had supersized icons ...
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why there is keyboard input lag on login gdm?

So i am facing a strange issue with Ubuntu 20.04 the keyboard input lags a lot on login screen when entering password. I have tested after login there is no lag. My device is HP Elitebook Folio 1040 ...
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1answer
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Trying 20.04 LTS - Errors from xkbcomp are not fatal to the X server

I've just installed new relase LTS from USD Stick into my own new DeskTop new PC Gammer AMD Ryzen 5 - Asus PRIME A320M - MSI GeeForce GTX 1650 Super Gammer . MAxtor SSD 240Gb - WDC 2Tb SATA I booted ...
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How to eliminate lightdm/gdm and use startx to fire up MATE on Ubuntu Server 20.04 post shell login?

On Ubuntu Server 20.04 I've found that I'm having some trouble getting plain old startx to work for users after installing MATE desktop. GDM can start up fine as well as LightDM, but when I kill them ...
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lightdm changed default desktop enviourment and removed applications from menu

My PC(ubuntu 20.04) was working fine but today when I try to login I got into login loop and after some time I figured out that this is an issue with gdm3 then I installed lightdm and set it as ...
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Ubuntu 20.04 XDG_SEAT, XDG_VTNR, XDG_SESSION_ID env variables are not set

I set up and installed Ubuntu 20.04 using debootstrap method debootstrap --arch=amd64 --variant=buildd focal ./focal_amd64 http://archive.ubuntu.com/ubuntu/ then installed all the rest. It runs ...
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I suddenly cannot use “Joint Display Mode”

I have a NUC8i5BEK, one HDMI to HDMI, one type-C to DP port, two screens. Linux CCC-NUC8i5BEK 4.15.0-99-generic #100-Ubuntu SMP Wed Apr 22 20:32:56 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux, Ubuntu 18....
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Reinstall a display manager [duplicate]

I've just been installing DDE on ubuntu and I accidentally chose lightdm over gdm3. What do I do?
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Share GDM3 with two Xservers running on the same computer

I have ubuntu 20.04 Desktop with its own GDM/xserver. I have a container running simultaneously (on different ttys) archlinux on the same computer with its own GDM and Xserver. Is there a way to share ...
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Login loop after upgrade to 20.04

I upgraded Ubuntu 18.04 to 20.04. And after it I cannot be able to login desktop enviroment. My graphic card: [22:49:33@0] [ardaorkin@ardaorkin-Inspiron-3585:~]$ lspci -nn | grep -E 'VGA|Display' 04:...
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How to change the initial login screen background with blur in Ubuntu 20.04?

In Ubuntu 20.04, if I change the wallpaper then lock screen and login screen changes automatically. I am happy with this. But When I am not logged in any account then default login screen background ...
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gdm3: unable to boot in 18.04

I restarted my computer which has (dual boot Ubuntu 18.04 and windows 10) because I was having some trouble installing and uninstalling virtual box. After the Ubuntu loading screen, the boot does not ...
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How to create a kiosk for steam?

I want to build kiosk for steam game app. Mysystem info:- OS - Ubuntu 20.04,.Gnome, GDM Till now I did create a file /usr/share/xsessions/gameaccount contains [Desktop Entry] Exec=game-session ...
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1answer
232 views

Change Ubuntu's purple login screen to GNOME 3.36's

My login screen on boot is Ubuntu's purple login screen. On suspend, the login screen is GNOME's new one, with the blurred desktop bg. How can I get rid of Ubuntu's and only have GNOME's? Settings ...
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1answer
172 views

GDM3 to current background

I was wondering if there is a way to make GDM3's background a blurred version of the Administrator's current background? I am running Ubuntu 20.04. Someone please help me to do this. I accept ...
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Ubuntu GUI login throws me out

I have been trying to get ubuntu 18 to authenticate using OpenLdap server with home directory being NFS mount from a BSD system. I am unable to authenticate the user using commandline but when I try ...
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1answer
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How to fix GDM3 loop?

After following advice here, I have found myself stuck in a loop. Only the Wayland version works, but I need the normal edition. I no longer care about getting KDE, I just want my laptop fixed. It has ...
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GDM3 asks to create new user every time

I have upgraded Ubuntu 18.04 LTS to Ubuntu 20.04 LTS Beta before the official launch. Since then I am facing this issue. Whenever I try to login to Ubuntu, after start up, I am asked to create a new ...
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How to start Pantheon from GDM3

I have a laptop with Ubuntu 19.10 installed that I've been using for a while now. However I would love to use the Pantheon desktop which is found on elementary os. I installed all the necessary ...
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resume from suspend not working on a macbook 5.3 (2009) and fresh installed 20.04

I'm getting crazy. Neither lightdm, nor gdm3, not in any combination (nouveau/nvidia-340) is providing a working suspend on my macbook pro (5,3) from 2009. best I can get is nvidia with gdm, where at ...
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3answers
708 views

Lock screen blur missing in 20.04

After upgrading to Ubuntu 20.04 featuring Gnome 3.36, the lock screen displays a solid purple color, instead of the blur-over-wallpaper effect. How can I fix this? Gnome 3.36 removes the separate ...
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29 views

4 seconds delay when switching to another TTY

After pressing Ctrl+Alt+F? to switch to another TTY (both graphical or not) I get a 3-4 seconds delay where I still see the "old" TTY before the screen switches (which is then almost instant). In ...
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1answer
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Cannot switch keyboard at GDM login

Just a bit of a different question from 1014258. I have an arabic keyboard installed on my system and sometimes I forget to switch it back to english before my computer suspends itself. When I go to ...
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Failed to start GNOME display manager

I switched from gdm3 to lightdm but now I can’t boot Ubuntu-18.04.3. I get the message: Failed to start GNOME Display Manager in recovery mode Went into tty2, tried: sudo dpkg-reconfigure lightdm ...
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Unexpected switch to console mode when switching workspace

Around once an hour and completely randomly, when switching workspace by using Ctrl+Alt+Up or Ctrl+Alt+Down, my OS switches to console mode (full black screen + shell input that asks for my login and ...
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1answer
54 views

Black screen login loop when using GDM3

Problem Hello everyone! I am having a problem with my Ubuntu computer using GDM3. My machine gets to the GDM3 login screen just fine, but whenever I type in my password and hit the button to log in ...
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Is LightDM necessary after installing GDM3

Do I need to keep LightDM after installing GDM3. If not then will it effect any other programmes on removing. Please do not hesitate to ask any info or data needed regarding this problem. N.B.: I ...
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2answers
9k views

How do I change login screen theme or background in Ubuntu 20.04?

How can I change the Ubuntu 20.04 login screen theme or background? In the previous version 19.10, I can change it from the CSS file under Yaru theme but now there is no CSS file.
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1answer
49 views

gnome desktop manager won't start after installing ubuntu-desktop on Ubuntu 18.04

I have a server hosted at a remote data center with Ubuntu 18.04 server installed, the client wanted to login to the server with a GUI, so I installed a desktop manager using apt install ubuntu-...
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System program problem detected when I start my computer

Every time I start my computer I get "System program problem detected" pop-up. I press report problem but I want to solve it (not to stop displaying pop-up but to fix the problem). The problem is I ...
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0answers
48 views

GDM Login screen Glitch

I tried to change the log in screen background of Ubuntu 19.10. I did the following modification in gdm3.css. #lockDialogGroup { background: url(file:///usr/share/backgrounds/thumb-1920-606500.jpg); ...
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Ubuntu 18.04: Why many gdm-session-worker?

I am running a standard Ubuntu 18.04 desktop on my laptop. I found out the following when looking at the output of ps fuxa: root 20788 0.0 0.0 265424 2156 ? Sl Mar22 0:00 \_ ...
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login loop - how to fix gdm3

I did something and messed up gdm3 because I have a login loop. I think it was related to installing vulcan drivers, which I removed since then. I checked permissions on .xauthority and /tmp - both ...
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2answers
46 views

gdm does not start after logout

This problem came after logout Ubuntu. I got only a black screen with a cursor and no text.
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28 views

How to restart gdm on login loop from tty?

When using lightdm, when encountering a login loop after waking from sleep I can do Ctrl+Alt+F5 to drop into tty5 for example. After logging in, I write sudo service lightdm restart into the terminal, ...
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0answers
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Default xsession for new users

How do I change the default xsession for new users which will be added to the system in the future? I know I can change the last/default session for an existing user by editing the setting XSession= ...
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Monitor video briefly stops when login screen (gdm) appears, causing monitor startup splash to obscure content

Whenever the login screen appears, the video signal to the monitor is turned off and immediately on again. How can this be prevented? It's very annoying because my monitor shows a startup display ...
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0answers
25 views

Two gnome-sessions

I have two process gnome-session-binary running on my computer. One is running with my user and one is running with the gnome display manager user, they are running in different tty's. my user ...
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0answers
25 views

Can't get a display manager to properly display both monitors, Ubuntu 18.04 nvidia-driver-440

I've been trying to get a new desktop that I built up and running properly and I've been having some issues lately with my display managers. I'm connecting through a Dell U6000 universal display dock. ...
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1answer
182 views

Unlocking Ubuntu with a pin instead of a long password

I am trying to set up a pin unlock for my laptop running Ubuntu 19.10. Everything is going very smooth except that I don't know how to do it. I found a page that has the procedure. https://bbs....
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GDM login screen only appears after switching virtual console

I have a fairly stock Ubuntu 19.10 installation. On reboot (after the luks password screen) I just get a solid coloured screen but with no username or other content. I can get to the proper login ...
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1answer
41 views

package 'gdm' is not installed and no information available

I've installed Kubuntu. But I can't change the user from the login page. As it's my company's laptop I just want to switch back to ubuntu. But I can't. I am trying sudo dpkg-reconfigure gdm But I am ...
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1answer
44 views

Why is there no pulse-audio sink created after connection to bluetooth device

I'm using Ubuntu 16.04.6 LTS. There is no pulse-audio sink created after connection to bluetooth device : Here's what I do : $ bluetoothctl [NEW] Controller 00:1A:7D:DA:71:04 sebastien-B206 [...
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1answer
315 views

18.04 `sudo dpkg-reconfigure lightdm` falls back to gdm3 after unity greeter

Situation Ubuntu 18.04.4 LTS ubuntu-desktop 1.417.4 ubuntu-unity-desktop 0.1 lightdm 1.26.0-0ubuntu1 Action Starting off from a GNOME enviroment, I have run sudo dpkg-reconfigure lightdm, chosen ...
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0answers
99 views

Ubuntu 18.04 LTS gdm issue(s)

I have a small farm of similarly configured Ubuntu 18.04 LTS desktops. A few weeks ago one of them started experiencing random, infrequent problems with gdm3 crashing and never being able to restart. ...

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