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Questions tagged [gdm]

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

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can't signin to ubuntu due to sign-in loop

I am experiencing couple of errors on my ubuntu machine from the booting process to the sign in screen. My Ubuntu is in emergency mode. Whenever I bootup my machine it shows the below message You ...
-1 votes
1 answer
41 views

How to log in into another session when the screen is locked?

I used to be able to log in with another account when locking the first session. However, ever since I updated to 24.04 from 23.10 this option disappeared. I can only see this screen: What may be ...
0 votes
0 answers
20 views

What should i do after "sudo systemctl stop gdm" command?

I was trying to stop and restart my display manager in my VM. but after "sudo systemctl stop gdm". I can't seem to access any virtual terminal. my ubuntu is running on VT2 and I was using ...
8 votes
1 answer
4k views

How to diagnose/stop gdm-x-session spamming syslog

[Note: this is similar to issue #418 in the gnome gitlab but it happens to me constantly and I'm not running Evolution. I filed this there too, but gnome 3.28.2 is no longer supported there.] I'm not ...
0 votes
1 answer
69 views

Can I safely uninstall gdm3 after switching to lightdm?

Since Ubuntu 24.04 the login screen is not shown as long as my external HDMI monitor was plugged in. I always had to unplug it, login, replug the monitor. I found out that this seems to be a bug in ...
0 votes
0 answers
54 views

Gdm.service preventing me to boot, ubuntu 24.04

I can boot all the way up till I keep getting the error of no space left on the device and then gdm.service fails, then I enter sudo to try sudo apt install --reinstall ubuntu-desktop To fix my ...
2 votes
1 answer
5k views

How to rotate login screen in gdm3

I am using Ubuntu 17.10, wayland and gnome in a 3 monitors configuration. And the monitor in the middle is rotated to vertical orientation. When I log in all works well, but the login screen is ...
1 vote
0 answers
13 views

xorg.conf metamode validated and then invalidated

Ubuntu 24.04, Driver Version: 535.171.04 CUDA Version: 12.2 NVIDIA GeForce GTX 970 with 2 monitors attached and NVIDIA GeForce GTX 1070 just for number crunching. xorg.conf isn't a new topic, and it's ...
1 vote
2 answers
422 views

Ubuntu 24.04 doesn't load GUI and login screen after Upgrade from 23.10

Yesterday I upgraded my Ubuntu from 23.10 to 24.04. After successful upgrade, I suspended the system and went to sleep. Today, I noticed that the system stuck at login page. I rebooted the system and ...
0 votes
0 answers
68 views

How can I fix GNOME after a failed upgrade from Ubuntu 22.04 LTS to Ubuntu 24.04 LTS?

I am currently able to use my computer because I am using LXQt and LightDM. Yesterday I attempted to upgrade from Ubuntu 22.04 LTS to Ubuntu 24.04 LTS. Unfortunately the upgrade had some errors. After ...
-1 votes
0 answers
27 views

How to login back to GDM3?

I installed packages to run python code, but during installation some packages conflicted between those that were already installed and I decided to ask about this chat gpt, he suggested removing all ...
0 votes
0 answers
16 views

Having to manually start gdm everytime

I recently installed lightdm, Big mistake. It was terrible, So i then un-installed it using systemctl remove lightdm.service. However, I am still having issues. First is that on startup it still has ...
1 vote
0 answers
175 views

Ubuntu 24.04 won't start display manager. Can only be used properly from remote session

Recently I changed desktop environment from GNOME to KDE and back while I was connecting to my Ubuntu 24.04 PC remotely with XRDP, whereafter my PC won't load display manager and is practically "...
0 votes
1 answer
8k views

boot hangs at "Started GNOME Display Manager" after updating to 18.04 (kernel 4.15.0-66)

I have a custom-built workstation (from early 2018) with NVIDIA GeForce GTX 1080 Ti. It's connected to one screen and a few USB devices. It came with Ubuntu 16.04 preinstalled. The kernel I'm using ...
3 votes
3 answers
5k views

Blank screen with only mouse cursor (Ubuntu 18.04)

So, I've been experiencing this issue lately. I'm on Ubuntu 18.04, GDM/Gnome, default Ubuntu desktop. My graphics driver is nvidia-390 from the graphics-drivers PPA. My graphics card is a GeForce GTX ...
-1 votes
0 answers
33 views

Blank screen for Xorg based gdm or desktop environment

I have a system that was stopped working with Xorg. This applies to both gdm and desktops like ‘cinnamon’ and ‘unity xorg’. The symptoms are a blank screen and on unmoving mouse cursor. Gdm under ...
-1 votes
0 answers
44 views

Ubuntu 20.04 screen turns purple briefly after entering password on login screen

Same problem 1 Same problem 2 I encountered the same problem as the two above. After I entered the password on the login screen and logged in, my computer screen would be black for a while, and then ...
0 votes
0 answers
590 views

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/...
1 vote
0 answers
174 views

Most characters disappearing in GNOME after suspend

Legion 5 17ARH05H laptop with AMD Ryzen 7 4800H and NVIDIA GeForce GTX 1660 Ti Mobile Ubuntu 24.04 LTS (issue existed with 23.10, too) NVIDIA drivers 550 (issue exists with 535, too) Everything works ...
0 votes
1 answer
119 views

"GdmSession: no session desktop files installed" after rebooting

I suspended my desktop machine with 24.04 yesterday and found that the lock screen did not react to input. After rebooting it failed to start up the GUI. This is what I found in the logs: $ journalctl ...
1 vote
0 answers
44 views

Part of VSCode window in full screen is unclickable

I have a pretty fresh installation of Ubuntu 22.04. When I maximaze a vscode window, most of it becomes unclickable. If I place another window behind vscode and click on the unclickable part the ...
0 votes
1 answer
361 views

24.04 - gdm3 crash... how to report from terminal? Reporting problem?

This appears to be caused by sudo apt install fuse... Of some peculiar reason gdm3 crashed on me (on a fairly fresh install of 24.04). /var/log files didn't appear to tell anything as I glanced ...
0 votes
0 answers
72 views

Crashing almost everytime when logging in or after suspend

Ubuntu 24.04, Asus Zenbook 13. Since I updated to 24.04, the suspend function doesn't work well, almost each time I try to log back to my system, there is few seconds of nothing and then one of the ...
0 votes
0 answers
75 views

Display glitches and "shakes" back and forth sometimes

A few months ago now, a problem started happening where my entire display appears to "shake" off the screen center and back extremely fast, with graphical glitches appearing as well. This ...
-1 votes
2 answers
114 views

Setting gdm settings through dconf has no effect

I've been trying to disable-user-list at user logon guided by various solutions: GNOME official docs RedHat Fostips and many others that were actually copy-pasted articles This seems to be an old ...
0 votes
0 answers
39 views

Unable to pass the login screen ubuntu 23.10

I upgraded my pc from ubuntu 22.10 to 23.10. Everything went on well after restarting my pc, i couldn't go past the login screen. After many trials without success, i changed the display manager from ...
3 votes
1 answer
3k views

gdm.service preventing boot

I'm using Ubuntu Desktop 23.10. I've tried every suggestion in this thread as well as many others online, but I cannot get back into the Ubuntu GUI/GNOME desktop environment. I'm using Ubuntu 23.10 ...
0 votes
0 answers
321 views

Wayland no longer enable-able on Ubuntu 22.04 with NVidia?

I have enabled Wayland on Ubuntu 22.04 as follows: /etc/gdm3/custom.conf I set WaylandEnable=true But when I run echo $XDG_SESSION_TYPE it shows x11 I read that Gnome disables wayland when it detects ...
0 votes
1 answer
5k views

Remove GDM Completely

I recently tried installing Gnome Ubuntu Desktop from here https://popey.com/blog/posts/my-ubuntu-1604-gnome-setup.html During the installation, I remember gdm3 asking me to set some kind of default ...
3 votes
3 answers
41k views

Stuck at "Started GNOME Display Manager" on 18.10

I just recently installed Ubuntu 18.10. After successful installation, I rebooted my system but Ubuntu didn't boot, it gets stuck at showing started GNOME display manager. My keyboard is also not ...
0 votes
0 answers
27 views

Delay displaying Active directory user in GDM

After a lot of struggle, I have finally been able to make my laptop work not too bad with Active Directory/winbind authentication. Anyway, I have an annoying issue that I can't figure out. For the ...
2 votes
1 answer
4k views

Gnome session broken on Ubuntu 17.10

My dell inspiron 660s with intel graphics ran Ubuntu 16.04.3 for a year with no issues, and I decided to give 17.10 a try. After installing 17.10, ubuntu restricted extras, lowlatency kernel, and ...
0 votes
0 answers
50 views

Files app and all files and folders are not showing up in 23.10 version after reboot

I've run into a problem where the Files app in Ubuntu doesn't show, and even all of my folders and files are hidden from the display screen; even searching in the search box doesn't show them. I tried ...
1 vote
1 answer
347 views

Ubuntu gdm3 login screen menu

I have gdm3 installed as my display-manager on Ubuntu Budgie and when I log in there is this small settings icon in the right corner with the options: Ubuntu Budgie Ubuntu Ubuntu with Xorg What are ...
1 vote
0 answers
245 views

How to control which monitor gdm3 login screen appears on?

Ubuntu 22.04.4 I have five monitors connected to my computer, while facing them from left to right they are monitors 1, 2, 3, 4, and 5. I would like the gdm login to appear on monitor #2. I can't ...
1 vote
1 answer
307 views

GDM Wayland session dies with gnome-shell error No GPUs with outputs found (NVIDIA)

GDM tries to start a Wayland session but gnome-shell dies with "No GPUs with outputs found". GDM doesn't offer a choice of Wayland sessions as a result. System has NVIDIA GPU in addition to ...
0 votes
0 answers
158 views

Yubikey inserted always asking for smart card login and no longer for password

I'm using Ubuntu 23.10. My company provided me a Yubikey for VPN access and everything works fine. However whenever I turn my pc on, the gdm screen only asks for smart card login (and no longer for ...
9 votes
1 answer
3k views

18.04 recently lost tap-to-click at login (gdm)

I recently lost tap-to-click ability at the login screen (gdm). I originally enabled it in 17.10 and it survived into 18.04 until a few days ago. So I'm not sure what happened. I followed ...
6 votes
1 answer
4k views

Ubuntu 16.10 Mouse cursor stays in upper left corner

After crashing my Ubuntu 16.04 with installing nvidia drivers I installed Ubuntu 16.10 However my cursor is not moving anymore. It stays in the upper left corner. It is moving invisible (detected ...
74 votes
7 answers
330k views

How do I switch from LightDM to GDM?

How do I switch from the default display manager (Lightdm) to the older display manager (GDM)?
1 vote
0 answers
186 views

Ubuntu 22.04 gui freezes intermittently and permanently. Restarting gdm via ssh fixes until next time it freezes

I have a Linux box, not a laptop. Running "glxinfo -B" yields the following: name of display: :0 display: :0 screen: 0 direct rendering: Yes Extended renderer info (GLX_MESA_query_renderer)...
0 votes
0 answers
180 views

GDM3 issues on 23.10

I recently updated to 23.0 and then 23.10 (hoping it would fix the issue). When the OS gets to the screen which would normally be the DM login, it just gives the vague "Oh no!" Message. I've ...
3 votes
2 answers
5k views

Black screen after login 18.04

After login into my main account, I get a black screen that lasts up to an hour after which the desktop will usually load and works like normal. zany130@andres-X470-AORUS-ULTRA-GAMING OS: Ubuntu ...
8 votes
3 answers
31k 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....
1 vote
3 answers
492 views

Doesn't boot to desktop environment after updates

I have a 22.04 machine with an old-ish Nvidia GPU which worked perfectly until today, when I got a message that updates were available, and I chose to install them. Installation concluded successfully,...
0 votes
1 answer
469 views

i3 not showing on my login screen (Ubuntu 22.04)

I newly installed Ubuntu and later i3, it was working for a while but suddenly among other things i3 stopped working, the "other things" were fixed by simply reinstalling them or installing ...
0 votes
1 answer
77 views

How do I login normally to my Ubuntu PC again after an account lockout?

While my Ubuntu 20.04 (Focal) PC was at the lock screen, I inadvertently left an object on the keyboard for over an hour. It repeatedly pressed who knows how many buttons. When I found it, it was ...
44 votes
4 answers
93k 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.
1 vote
0 answers
54 views

Xsession hangs in sudo edubuntu-langpack-installer

After an upgrade from Ubuntu 20.04 to 22.04, the graphical login stopped working. The display manager did not show up anymore. After some dpkg-reconfigure gdm3 and other things, that seems to work now ...
3 votes
7 answers
2k views

Running a webbrowser on the screen saver or login screen?

I would really like people to be able to use my locked computer to surf, so I would like some way to run a browser on login screen. So can I make GDM run Firefox in some way? It would be cooler if I ...

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