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Questions tagged [login-screen]

Questions about the login screen, specifically customizing/troubleshooting it.

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574 votes
52 answers
1.3m views

Ubuntu gets stuck in a login loop

My Ubuntu is stuck in a login loop when trying to enter my desktop. When I login, the screen gets black and soon after that the login screen comes back. I've read that the problem might be caused by ...
Calvin Wahlers's user avatar
297 votes
47 answers
969k views

How to fix "The system is running in low-graphics mode" error?

Note: This is an attempt to create a canonical question that covers all instances of "low-graphics mode" error that occurs to a user, including but not limited to installation of wrong ...
124 votes
13 answers
228k views

How to enable numlock at boot time for login screen?

I am trying to force numlock to be on upon initial boot at the login screen on Ubuntu 12.04. The only solutions I have found so far switch numlock on only after initial login. I'm looking to force ...
darryn.ten's user avatar
  • 1,473
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.
Dion's user avatar
  • 441
24 votes
10 answers
135k views

ubuntu 14.04 login loop problem

My Ubuntu 14.04 is stuck when trying to login my desktop. The screen goes black and soon after that the login screen comes back. I followed all steps in Ubuntu gets stuck in a login loop but the ...
Anitha's user avatar
  • 341
25 votes
2 answers
66k views

Remote login with graphical display manager (GDM, LightDM)

Is it possible to remotely (via ssh) make a login to GDM? I'll explain a situation in which I'd need this: I'm on my laptop and connect to my desktop via ssh. I realize there are some updates ...
luri's user avatar
  • 4,112
23 votes
6 answers
62k views

Cannot login to my user account

I upgraded my ubuntu from 11.04 to 11.10 via mounting the latest alternate CD image released on Oct. 13 as the final standard version and running the cdromupgrade prompt successfully, with full latest ...
yihfei's user avatar
  • 231
43 votes
3 answers
75k views

How can I make LightDM the default display manager?

I have LightDM installed and can start it with sudo start lightdm. But at boot, GDM is still the default. How can change this so LightDM is loaded automatically at boot instead of GDM?
Anders Feder's user avatar
120 votes
15 answers
66k views

How do I disable the drum beat sound on the login screen?

I would have expected System ▸ Administration ▸ Login Screen ▸ Play login sound to control this, but unchecking it does not prevent the drum beat sound from playing.
ændrük's user avatar
  • 77.2k
36 votes
2 answers
31k views

Personalize monitor position before login

I'm using multiple monitors. When logged in everything is fine: The left monitor is positioned to the left and the right monitor is positioned to the right, but before I log in, the login-screen ...
Nijboer IT's user avatar
32 votes
8 answers
115k views

Ubuntu screen flickering

I have installed ubuntu 20.04 on my laptop specification are intel i3 6th gen with intel graphics card 520,screen resolution 1366×768. when i lock desktop to temporarily turn off the screen but when ...
Rahul barate's user avatar
35 votes
15 answers
133k views

Changing login screen wallpaper

I have been trying to change my login screen wallpaper to one of my own using ubuntu-tweak. The wallpapers are located in Ubuntu's default wallpaper folder and I have given all users read privileges ...
Joren's user avatar
  • 5,053
34 votes
9 answers
12k views

How can I take a screenshot of the login screen?

How can I take a screenshot of the login screen? I do not want to recreate my Ubuntu installation in a virtual machine.
ændrük's user avatar
  • 77.2k
12 votes
3 answers
13k views

Cannot change login screen background in 18.10

I changed both the desktop and login screen background photos. However,only desktop photo is changed. The one on the login screen is still the purple Ubuntu one. Is this a bug?
lovedrinking's user avatar
42 votes
7 answers
110k views

How do I change the login screen in Ubuntu 16.04+?

The recipies for changing one's login screen in 14.04 [EDIT or in 15.04, 15.10] don't work in 16.04. The "custom" background shows for a split second and then fades to the Ubuntu one. So, how do I ...
Greg Kramida's user avatar
29 votes
7 answers
56k views

How can I change the login screen theme in GDM?

How can I change the Login screen theme? Is there a graphical way or no?
Weboide's user avatar
  • 10.6k
10 votes
10 answers
76k views

Login screen loops unless you login as Guest [duplicate]

I am running a VMWare Player with a Ubuntu 12.04 LTS Precise Pangolin as Guest on my Windows 7. Sometimes I get the shutdown blue screen error in Windows, this time it happened when I was running the ...
Mário Silva's user avatar
111 votes
1 answer
154k views

What's the difference between GDM and LightDM?

What is the difference between GDM and LightDM? How can one switch between them. I mean if I have selected LightDM during installation process, will I be able switch to GDM?
user7044's user avatar
  • 3,861
4 votes
2 answers
28k views

How to customize Lock Screen theme in Ubuntu 20.04

I changed the gnome shell theme of the login screen to Yaru-dark by following instructions in this answer. I did notice the dark calendar and system menu when I log on after reboot. However, when I ...
Jason's user avatar
  • 143
25 votes
8 answers
45k views

rotated monitor. login screen needs rotation

I rotated my screen, and once I login, it works fine. But, the greeter (login) screen hasn't got the message that things are rotated 90 degrees. How can I change the rotation of the login screen? ...
j0h's user avatar
  • 14.9k
21 votes
6 answers
31k views

How do I change the login manager's keyboard layout?

I have a netbook with an AZERTY layout. I've changed it to "bépo" to try it, but now I've reset it to a french layout. While all the apps have taken the change into account, Ubuntu's login manager ...
Manu's user avatar
  • 703
15 votes
3 answers
55k views

"Failed to start session" after interrupted upgrade to 14.04

While upgrading to 14.04 using sudo do-release-upgrade my network connection was interrupted and several packages failed to upgrade. Running do-release-upgrade again reported No new releases found ...
Ian Mackinnon's user avatar
13 votes
4 answers
22k views

Login loop with fresh 19.10 install

So I installed 19.10 fresh from USB. I picked no login required. First reboot after install I'm welcomed inside Ubuntu. But second time I'm prompted to login for no reason. Worst part is that i ...
Huux's user avatar
  • 341
15 votes
9 answers
63k views

How to change Ubuntu Budgie login screen background?

I want to change the Ubuntu Budgie login screen background to the one I'm currently using on my account; Just like it was with the previous Ubuntu versions with Unity with the draw-user-backgrounds ...
Ariel's user avatar
  • 173
9 votes
5 answers
35k views

How to restore Ubuntu login screen after lubuntu install?

I have Ubuntu 13.10 installed. I then installed lubuntu 13.10 (sudo apt-get install lubuntu-desktop) too. As a result the login screen has changed and I can no longer get an on screen keyboard. How ...
user avatar
5 votes
1 answer
2k views

Ubuntu datetime locale on login screen

I've installed Ubuntu 19.10, language/locale/formats are set in US/en. And everything seems to work OK, except datetime language on login screen (when I turn on my laptop and see fields for user/...
Yevhenii Nadtochii's user avatar
2 votes
1 answer
9k views

LightDM & SDDM fight on greeter screen

I had installed Kubuntu 15.04 sometime ago. I upgraded to 15.10, things were going fine till I added ubuntu-desktop to use Unity DE. When booting with systemd, on startup or login, I get black or ...
user.dz's user avatar
  • 48.3k
40 votes
7 answers
62k views

Force gdm login screen to the primary monitor

I have two monitors attached to my video card. Primary monitor has a resolution equal to 1280x1024 and the second has 1920x1200. My gdm login screen always appears on the second monitor even if it is ...
Kirill V. Lyadvinsky's user avatar
14 votes
8 answers
85k views

After Upgrade from 14.04 to 16.04 login screen runs in a loop while console login works

I am on a DELL Precision 5510 Ubuntu Edition with Ubuntu 14.04 as default installation. Today I upgraded from 14.04. to 16.04 as shown here The upgrade went without any error messages. However, after ...
Bunjip's user avatar
  • 815
11 votes
4 answers
29k views

How to get Ubuntu to ask for my password at login screen again?

I used to have a password prompt but then I, from somewhere in User Accounts, unchecked "Require a password for login." Now, I want Ubuntu to prompt for a password again at login screen, mainly ...
Abhimanyu's user avatar
  • 1,393
11 votes
6 answers
40k views

How to change the login screen resolution in Ubuntu 18.04

I need a way to change the boot-up and login screen resolution to 1920 x 1080 resolution. I have a 4K display on my laptop and can't read the text in the grub bootloader screen properly as they aren't ...
Bernard Wei's user avatar
  • 2,145
7 votes
1 answer
664 views

Login screen appears in a much older style

The login screen appears in a much older style: Output of cat /etc/X11/default-display-manager: /usr/bin/xdm How can I change it back to normal?
Kish's user avatar
  • 71
6 votes
1 answer
814 views

Entirely disable suspension (at kernel level? - has to be independent of used DE and login state!)

Once again I need a workaround to deal with my almost broken notebook graphics card: It does not wake up after suspending! The Ubuntu 14.10 system is waking up, but the display stays off, so I have ...
Byte Commander's user avatar
  • 108k
3 votes
3 answers
7k views

How do I set the login manager to enable `change languages` at login?

How can I recompile the source to force the option to allow changing languages and keyboard layouts at login?
Funk Daddy G's user avatar
22 votes
2 answers
11k views

No symbol table. Press any key to continue

Whenever I boot Ubuntu 16.10, just before the Plymouth screen, I'm seeing this message: No symbol table found. Press any key to continue... and it remains there for a minute or so before showing me ...
Ron's user avatar
  • 20.7k
16 votes
4 answers
24k views

How to disable sleep/suspend at login screen?

I've been at trying to do this for the last several hours with no progress. I'm running Ubuntu 16.04 and I want to disable the sleep/suspend at the login screen (before logging in with any user) so ...
JohanPI's user avatar
  • 331
13 votes
0 answers
6k views

How do I disable the startup sound in Ubuntu 12.04 login-screen? [duplicate]

Possible Duplicate: How to disable login sound? I would like to know how to disable the startup sound in Ubuntu 12.04 login-screen; that is, the sound produced at the login-screen before the ...
Marco Lackovic's user avatar
12 votes
7 answers
54k views

after 12.04 upgrade: can't log in although password is correct

I upgraded from 10.10 to 12.04, and now can't log in any more. The password is correct- when I type in a wrong one, I am told it's incorrect, while the correct one is seemingly accepted, but then just ...
Scout Fox's user avatar
  • 121
12 votes
9 answers
35k views

Desktop login fails, terminal works

I have a freshly setup 12.04 LTS pc system (120 GB SSD, 1 TB HDD, 16 GiB RAM); since a few days, I can't login to the graphical desktop anymore: there is very short flashing shell window which ...
Tobias's user avatar
  • 251
4 votes
6 answers
22k views

Cannot login via Unity login screen after upgrade to 12.04

Logging in via the shell accessed through Ctrl+Alt-F1 and logging in as guest via the graphical user interface work 0O When I try to log into my standard user account via the graphical interface, the ...
codesurgeon's user avatar
4 votes
1 answer
8k views

How do I create a popup banner before login with Lightdm?

When Ubuntu was using gnome I was able to create a popup banner like the banner below before the login screen using zenity in the /etc/gdm/Init/Default. The line of code would be like this: if [ -f "/...
Rich Loring's user avatar
2 votes
1 answer
2k views

User Accounts not listed in System Settings User Accounts

I'm running 12.04 on PPC (IMAC G5) - but have a problem with creating/editing user accounts with the System Preferences User Accounts tool. All updates have been downloaded and installed. When I ...
Jake's user avatar
  • 21
19 votes
7 answers
17k views

Login screen password language

I have ubuntu 12.04, and 2 languages on my keyboard. Every time the screen goes black it requires my password, which is in English. But the language set is the one I have used last. How can I make it ...
user1637056's user avatar
17 votes
7 answers
45k views

How can I change the Keyboard Layout on login screen?

I changed my Keyboard Layout from Swedish to English, but now my password doesn’t work and I can’t login. I need a way to change the keyboard layout at the login screen without having access to the ...
user avatar
10 votes
5 answers
2k views

How can I disable passwordless login?

I set my account to be allowed to log in without a password. I only wanted this temporarily, but I can't seem to change it back to how it was before. How can I make it so that my password is ...
Alex's user avatar
  • 2,054
9 votes
10 answers
38k views

Ubuntu 18.04 Login window loop

Is there any reason the login window would stop working and start looping? I'm running 18.04. I normally RDP into the ubuntu box, but that isn't working now. Using a keyboard and mouse, I see my ...
Emmit's user avatar
  • 301
8 votes
1 answer
18k views

Disable auto-login from the CLI

After successfully installing Ubuntu and logging in to the Unity desktop, I followed the prompts to enable the proprietary display drivers. After rebooting, the Unity desktop is now entirely ...
FoleyIsGood's user avatar
7 votes
6 answers
14k views

How do I prevent being kicked back to the login screen every time?

Just finished upgrading from Ubuntu 13.04 to 13.10. Everything works fine. After the installations, I restart to finish the installations. In the log in screen, I put my password and then it goes back ...
user203648's user avatar
7 votes
3 answers
13k views

Light Display Manager as login account [closed]

yesterday I installed Ubuntu 13.10, and since I rebooted my laptop, there is a user account called Light Display Manager as available option on my login screen. A password is needed for login, but I ...
IndexOutOfBoundsException's user avatar
6 votes
3 answers
24k views

Login screen won't accept my password

I recently upgraded to 12.04 from 11.10 and since upgrading have been unable to log in to my user profile. The upgrade went okay and I can login to a guest session fine but whenever I try to login to ...
Raven H's user avatar
  • 61

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