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109 votes

Is there to make the login screen appear on the external display in 18.04?

This is a known and reported bug with gdm3. The current workaround appears to be: Go into Settings > Devices > Displays and configure your monitors the way you want for your login screen (in ...
Damian T.'s user avatar
  • 1,221
85 votes
Accepted

How do I switch between console mode and GUI in 17.10 and newer?

The actual used tty consoles have changed around with the introduction of Wayland and 17.10. Now tty1 always contains the login screen, and tty2 contains your actual loaded session. So use Ctrl+Alt+...
Videonauth's user avatar
  • 33.5k
62 votes
Accepted

How to disable GUI on boot in 18.04 (Bionic Beaver)?

To disable GUI on boot, run: sudo systemctl set-default multi-user.target To enable GUI again issue the command: sudo systemctl set-default graphical.target To start Gnome session on a system ...
Bob's user avatar
  • 2,533
46 votes

How do I switch from LightDM to GDM?

For newer versions of Ubuntu I had to use gdm3 instead of gdm: sudo dpkg-reconfigure gdm3
dessalines's user avatar
45 votes
Accepted

Can't switch to gdm3 using sudo dpkg-reconfigure gdm3

re: sudo dpkg-reconfigure gdm3 error message. Just reboot and you should be running gdm3. The error that you're receiving just means that gdm3 wasn't already running, so it couldn't reload it.
heynnema's user avatar
  • 71.2k
40 votes
Accepted

Is there to make the login screen appear on the external display in 18.04?

This Solved my Isuue: Go into Settings > Devices > Displays and configure your monitors the way you want for your login screen (in your case, internal laptop display disabled). Click the "Save" ...
Aravind's user avatar
  • 1,408
40 votes
Accepted

GDM3 does not start in Ubuntu 18.04

I had a similar problem updating from 16.04 to 18.04. The solution in my particular case was to deactivate Wayland modifying /etc/gdm3/custom.conf uncommenting or enabling WaylandEnable=false so the ...
Gustavo Gstre's user avatar
36 votes

Is there to make the login screen appear on the external display in 18.04?

I too have an external monitor. This worked for me: Set your display mode as desired using Settings > Devices > Displays Open a terminal window by pressing CtrlAltT and then type: sudo cp ~/....
J D's user avatar
  • 460
35 votes

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

In previous versions of Ubuntu since its introduction of gdm3 for login greeter, the style sheet file is directly available to edit. for example: /usr/share/gnome-shell/theme/ubuntu.css #for Ubuntu 18....
PRATAP's user avatar
  • 22.7k
29 votes
Accepted

Is gdm3 preferred to lightdm?

GDM is the default DM in Ubuntu as of 17.10. LightDM is still the default for some other flavours, like Xubuntu or Lubuntu, and I doubt either of these projects will move to GDM, so LightDM should ...
muru's user avatar
  • 200k
29 votes

GDM3 does not start in Ubuntu 18.04

I was a victim of this issue for some time with Ubuntu 18.04 on a Dell Latitude 5580 which uses nvidia. I think gdm is not fully compatible with this spec. After trying many solutions, including ...
Kandy's user avatar
  • 391
25 votes

How to disable GDM from being automatically started?

For Ubuntu 18.04 this worked for me: Disable gdm This will prevent gdm from loading on boot and login is via console. systemctl set-default multi-user.target Using this method, gdm can still ...
DarthVanger's user avatar
24 votes

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

I am using Xubuntu 16.04. The suggestion posted in this answer by Ulad Kasach worked for me. Bring the cursor back with Ctrl+Alt+F1 followed by Ctrl+Alt+F7
Mukesh Chapagain's user avatar
22 votes

Can't switch to gdm3 using sudo dpkg-reconfigure gdm3

Use this sudo dpkg-reconfigure lightdm in place of sudo dpkg-reconfigure gdm3 this and then choose gdm3.
Vardaan Shukla's user avatar
21 votes

Scaling Gnome login screen on HiDPI display

Persistent over upgrades approach could be to create file /usr/share/glib-2.0/schemas/93_hidpi.gschema.override with [org.gnome.desktop.interface] scaling-factor=2 text-scaling-factor=0.87 (0.87 to ...
Lauri's user avatar
  • 366
20 votes

Is gdm3 preferred to lightdm?

gdm3 has an annoying bug for Nvidia Optimus users not using wayland. If you run your nvidia driver kernel modeset (modeset=1), you enable "prime sync" which means you no longer have tearing on your ...
Tim Richardson's user avatar
20 votes

GDM3 does not start in Ubuntu 18.04

I found a solution based on this and it worked for me. First: sudo apt install ubuntu-gnome-desktop And then: sudo apt install gnome-shell gnome Next restart the system or simply sudo systemctl ...
Vajira Prabuddhaka's user avatar
19 votes

GDM3 does not start in Ubuntu 18.04

I've got a similar issue after trying to setup remote desktop to ubuntu 18.04. Following steps resolved my issue: sudo apt purge gdm3 sudo reboot sudo apt install gdm3 sudo service gdm start
0x8BADF00D's user avatar
17 votes

How to change the screen resolution for the GDM login screen?

On newer systems, you will want to place your monitors.xml file into the gdm configuration directory, the resolution will be picked up there: This, of course, assumes that you have gon into Settings >...
thecarpy's user avatar
  • 383
17 votes

Scaling Gnome login screen on HiDPI display

Was searching for a solution as well and found this: http://askubuntu.com/questions/469515/adjust-text-scaling-factor-for-all-users tl/dr sudo nano /usr/share/glib-2.0/schemas/org.gnome.desktop....
gilroy's user avatar
  • 179
17 votes
Accepted

Why is my GDM at a different TTY than my desktop environment?

A similar issue has been raised in another post. Answering your questions: Is this how things are supposed to work? I thought the desktop was supposed to use the same TTY (or whatever you call it) as ...
luisdarui's user avatar
  • 356
15 votes

How do I switch from LightDM to GDM?

In addition to the other answers, to use gdm3 and stop lightdm on Ubuntu 18.04 I had to run: sudo dpkg-reconfigure gdm3 systemctl stop lightdm systemctl start gdm3
Sophia Marie's user avatar
15 votes
Accepted

Cannot change login screen background in 18.10

to change the login screen background in Ubuntu 18.10 with default Display Manager that is gdm3 we need to edit the gdm3.css file. open the file with your favorite editor, mine is gedit. so sudo -H ...
PRATAP's user avatar
  • 22.7k
13 votes

Is gdm3 preferred to lightdm?

Ubuntu GNOME uses the gdm3, which is the default GNOME 3.x desktop environment greeter. As its name suggests LightDM is more lightweight than gdm3 and it's also faster. LightDM will continue to be ...
karel's user avatar
  • 116k
12 votes
Accepted

16.04 - boot stops at "A start job is running for Hold until boot process finishes up(time/no limit)

I fixed it myself. This is what I did From the GRUB menu , I selected recovery mode At the recovery menu , I selected the 'networking' option, and then root shell. I then typed dpkg-reconfigure ...
spark's user avatar
  • 658
12 votes

18.04: How to get Wayland back after upgrade to 18.04?

On the login screen, you should be able to select "Ubuntu on Wayland" by clicking on the settings icon, next to the login button. If that option is not available under the cog icon on the password ...
dhuyvetter's user avatar
12 votes

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

Easy! Just download the script from https://github.com/thiggy01/ubuntu-20.04-change-gdm-background, chmod +x the script, run like this: First, install this package: sudo apt install libglib2.0-dev-bin ...
Sam Pan's user avatar
  • 353
12 votes
Accepted

Remove blur effect on lock-screen

There is a Extension called Control Blur Effect on Lock Screen.. Control Blur Effect - Gnome Shell Extension By default the Settings of the Extension make the Blur Sigma Value to 0, This means you ...
PRATAP's user avatar
  • 22.7k
11 votes
Accepted

How to change the order of users in gdm login screen?

The last command lists the past successful logins on the system. This information is stored in the /var/log/wtmp file, and is used by gdm since version 3.17.2 to sort the list of users. If you delete ...
Alejandro's user avatar
  • 705
11 votes

Ubuntu 18.04 Login window loop

I've almost done all suggestions here, but none of them didn't work. Also gd3 reconfigure has no effect. But I had suspected to my last gnome extensions. The [email protected] ...
Khalil Laleh's user avatar

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