Questions tagged [gdm]

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

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What versions of GDM are used in Ubuntu 20.04 and 20.10?

What versions of GDM are used in Ubuntu 20.04 and 20.10? I found the version history of GDM: https://help.gnome.org/admin/gdm/ I need this to submit a bug on GDM's bugtracker
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fresh ubuntu 16.04 machine on cloud stuck at login page with teamviewer (already reinstalled lightdm, folder permission are updated) [closed]

First of all, I personally think that the issue is irrelevant to teamviewer I have a ubuntu 16.04 machine from huawei cloud and installed ubuntu-desktop I further installed teamviewer and added a user ...
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Ubuntu 18.04 - merge/combine the opened Intellij IDEA with icon on the Dock

As you can see in the picture, the opened window of Chrome, MS Teams and Sublime Text are merged with its own pinned desktop icon on the Dock in my Ubuntu 18.04, but Intellij IDEA is not. I think it ...
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Ubuntu 20.04 LTS blank login screen after upgrade of fresh install i915 graphics

I recently did a fresh install of a 20.04 LTS system where the install ran fine and booted through to a login screen. Upon login desktop was present and correct with 'normal' display resolution. ...
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How can I know which service is shifting my background down and making my background blck?

When I run Ubuntu 20.04 first I see the background correctly, then after some services starts up the background turns to be black. I tried to list the startup services using: sudo service --status-all ...
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Troubleshooting Ubuntu 20.10 freezing except for the mouse

I know there are a lot of questions online asking about this topic but most of them look for quick fixes and while they do usually work I am looking for a deeper fix that would prevent this problem ...
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Customizing theme - where is the purple background set?

I've customized my GDM theme and Gnome Shell theme in Ubuntu 20.04 (using Yaru as the base). To do this I have modified both /usr/share/gnome-shell/gnome-shell-theme.gresource and the files in /usr/...
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How to customise GDM?

I found this article, but there is no such setting in Ubuntu 20.04 am I right?
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How to disable fingerprint in GDM?

I use fingerprint with success and it is integrated well, however for decryption it is not helpful during initial login. So I want to disable for GDM login. However I can not find a clear description ...
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Fast bootup, but slow login from GDM prompt to desktop

Specs Ubuntu version: 20.10 (groovy) Storage: SATA SSD RAM: 8 GB DDR3 CPU: AMD A8-4500M APU GPU: AMD Radeon HD 7640G Problem Bootup is quite fast at 14 seconds as reported by systemd-analyze. But ...
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lightdm does not switch back to gdm

Hello i am using ubuntu 20.04 and i tried lightdm but i did not like it so i wanted to switch back to gdm3 using the command sudo dpkg-reconfigure gdm3 then before restarting i used the command cat /...
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Black screen with blinking cursor when booting!

I installed ubuntu 20.04.2 LTS. After installing, I restarted and everything was working fine. Today when I tried to boot up ubuntu again, I was met with a black screen and a blinking cursor. running ...
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How to disable the “screen locking disabled” notification in gnome 3.38?

This message pops up after every login, this started happening when I removed the desktop icons gnome extension - DING https://extensions.gnome.org/extension/2087/desktop-icons-ng-ding/ (I'm using ...
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Ubuntu 20.04 LTS - Why am I only in one group?

I am experiencing the same problem as noted at: Why my linux account only belongs to one group? I am running 20.04 and GDM. I've also: Followed every suggestion I could find related to disabling ...
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Computer does not complete boot cycle

Version is Linux dad 5.8.0-44-generic #50~20.04.1-Ubuntu SMP Wed Feb 10 21:07:30 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux I've got a newer system76 which will complete grub and the initial boot menus, ...
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Login Screen: Disable the password visibility toggling button

I have a default 20.04 Ubuntu install and the login screen has a password-visibility toggling button (an eye). I wish to disable this button and make the password always invisible. How can I do this? ...
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Machine starts to blank screen with blinking underscore every time, even after restarting gdm3

I have a Dell Precision 7540 with Ubuntu 20.04. I came into a problem where my machine would boot and get to a screen with a blinking underscore. This occurred after I closed my laptop, it had a blank ...
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Display Managers gdm3, xdm not working after upgrade to 20.04; lightdm stuck in login loop, only LXDE working [duplicate]

I just upgraded to Ubuntu 20.04. But I'm now stuck with problems with display managers. GDM3 (preferred DM for me) and xdm are just stuck at a black screen (with a blinking cursor/underscore). Next ...
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UBUNTU: clean, 958917/30883840 files, 22643659/123523840 blocks [duplicate]

I have an issue with Ubuntu 18.04. I was preparing a presentation and I had to force the shut down since the screen was blocked. When I rebooted this was the message (on black screen), no more. I have ...
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Trying to install GNOME on Ubuntu on remote server

Im a fairy new user at Linux. I have Ubuntu 18.04 on a host at paperspace. I'm following this guide: https://www.teknotut.com/en/install-vnc-server-with-gnome-display-on-ubuntu-18-04/ Beside that I ...
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ubuntu 20.04 missing /usr/sbin/gdm3 and /lib/systemd/system/gdm.service

This is a followup to my earlier posting on this site. I have two different Dell machines running 20.04. Both worked fine, and then, for no apparent reason, when I rebooted, I could not get to ...
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System-wide x11vnc for GDM on 20.04

I'm trying to setup system-wide x11vnc so even if no users are logged in, I can remotely connect and start a Gnome session. I followed this tutorial on the Arch Linux wiki as it seemed to mirror ...
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Black Screen after login (Ubuntu 20.04)

Problem: After typing in my credentials I am greeted by a black screen with a cursor. My desktop environment does not load. How can I resolve this issue and get my desktop environment to load? System: ...
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Run two gnome sessions simultaneously on a single desktop, isolating one from another

This is to expand on Is it possible to have different desktop sessions each with different settings? First off I know how to run two desktops by running something like xinit /usr/bin/xfce4-session -- :...
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Screen lock disables color correction profile

I calibrated my monitor using a colorimeter and the color tab in Gnome settings. The color on the screen looks good until the screen turns off (automatically after some time). When the screen starts ...
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136 views

Failed to start Light Display Manager on boot for Ubuntu 20

tl;dr; Light Service DM is not starting. I have tried fixing it via GDM3, was unable to do so due to broken packages. I think that somehow NVIDIA is involved, but I am not sure. Where to start from ...
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how to report problem on ubuntu Wiki page? why there is lightdm and not gdm?

I wanted to ask why is there (here https://help.ubuntu.com/community/SoundTroubleshootingProcedure) in Step 1 lightdm package installed? I believe Ubuntu does not use lightdm but gdm, right? I cannot ...
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GNOME desktop manager no longer opening, drop to console login screen

I'm running ubuntu 18.04 on a Dell 5540. Everything was working fine until I rebooted a couple of days ago and was dumped into a console login screen. Looking at the current syslog I find ...
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Cant login in Xorg from Waylant | login loop on Xorg | Ubuntu 20.04.1 LTS

Im using Ubuntu 20.04.1 LTS on wayland on some sitution i required xorg supported software like teamviewr to assecc my system. But i cant switch from wayland to xorg.
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If password fails, make GDM switch bach to the User list in 5 seconds

If the user enters an incorrect password on GDM in Ubuntu 20.04, the password box is redisplayed along with the error message, "Sorry that didn't work. Please try again." If you do not ...
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Configure network before login

In windows 10 Enterprise, you can set up the network (wired or Wifi) before logging in. Is it possible to do that in ubuntu ? When I start my laptop, network is running for previously configured ...
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53 views

Why gdm3 don't start on boot no more?

Since i tried to change some driver and configuration for my GPU, gdm3 don't start on boot. Boot stop on the dell logo and i have to open a tty session and start gdm3 service manually. Then everything ...
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57 views

GDM screen icon theme?

Does anyone know which file configures the default icon theme (indicator and status icons) used in the top bar of the GDM screen on Ubuntu 20.04? I looked inside the /usr/share/gnome-shell/theme/Yaru/...
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Ubuntu 20.04 LTS crashes when changing keyboard to Japanese (Mozc)

I tried to install the Japanese language and its input method, mozc. When I try to change the input method to mozc, the GUI sometimes crashes, but not always. Sometimes it crashes when adding the ...
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Failed to start gnome display manager Ubuntu 18.04

I am having this problem with my Ubuntu 18.04 I can't start it is stuck on the Ubuntu logo. I have a hp laptop I have tried the solutions suggested here but it is not working for me. Can anyone help?
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How to play a video before/over top of GDM in Ubuntu 20.04?

On my PC running Ubuntu 20.04, I want to play a video before GDM starts/over top of it. Not after logging in, but that. Is there any way to make Ubuntu autoplay a video in the plymouth screen before I ...
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Screen goes crazy with noise and ubuntu freezes

Description: Ubuntu screen gets crazy with black and white "noise", this has happened several times. It seems that Ubuntu is also frozen in this state because I cannot connect with ...
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Monitor turns on again after builtin screen saver turned it off on 20.04

I have a relative new Ubuntu 20.04 box but don't get the screen locker working correctly, even after many tries. Here is the behavior: Screen blanks after the configured time, and shortly after (as ...
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Ser user SystemAccount to false

I have the same problem listed here: Ubuntu 20.04 user not listed to login But when I change the SystemAccount property to false and reboot it will be set back to true. Even if I only logout the ...
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1answer
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Getting issue with display on Ubuntu 18.04.4

While running docker for scraping/splash, I kept getting notification of "Empty Trash" which indicated that the disk was out of space. After few seconds,GUI got stuck. I powered of the ...
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Using xrandr to split a display

I want to use xrandr to split up my 1920x1080 displays, attached to two servers, into multiple monitors. The servers are configured to start a gdm kiosk session on boot and run my startup script. I ...
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problem with ubuntu booting

I guess I ran some command trying to install something. After that, when I tried to restart my PC, it showed error while reading block run fsck manually which I did. After that, it was stuck in ...
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Ubuntu 20.04 Login Loop

Yesterday I was trying to install Anaconda and I went out during the installation and when I came back nothing was on the screen so I thought it was finished and shut down the pc. When I start it ...
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What is the difference between GNOME desktop and Ubuntu in SDDM?

I installed Kubuntu on my machine, and then decided to try the regular GNOME desktop. Thus I installed ubuntu-gnome-desktop and logged in from the welcome screen running SDDM. This has been a ...
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why am i getting ' event processing lagging behind' msg in Ubuntu 20.10

seeing my system logs, they are full of msgs like this: /usr/libexec/gdm-x-session[2564]: (EE) event4 - SIGMACHIP USB Keyboard: client bug: event processing lagging behind by 25ms, your system is too ...
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Can't logon to xfce4

I'm using Ubuntu 18.04 bionic and installed the xfce4 package. However, when I choose "Xfce session" in the login manager, it does not log me on to Xfce4 but instead throws me right back to ...
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Need help to fix the below packages error

zeppelin@ubuntu:~$ sudo apt full-upgrade Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Done The following packages were ...
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312 views

Login only via Ubuntu Wayland possible and User is missing in Login List, Ubuntu 20.04

After update from Ubuntu 18.04 to 20.04, all works fine. My notebook has two users there have access to the client with a separate user profile. After Unsubscribe from my profile, is it impossible to ...
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Ubuntu18 python3.8 global install corrupted UI and most applications don't open

On my Ubuntu18 machine, I have installed python3.8 (i already had python2.7 and python3.6) globally and it corrupted Ubuntu UI. Most applications like chrome, LibreOffice dont open. The 'show ...
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How do I stop xserver but still have a terminal/display to run stuff?

Hi i've looked at some other questions on stopping GDM/Lightdm to run stuff (Nvidia installs/patches) but my problem is using service stop gdm or init 3/init 5 just leave my screen with no connection ...

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