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Questions tagged [login-screen]

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

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480
votes
47answers
938k 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 ...
290
votes
43answers
900k 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 ...
100
votes
10answers
161k 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 ...
24
votes
10answers
127k 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 ...
22
votes
2answers
49k 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 ...
23
votes
6answers
52k 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 ...
38
votes
2answers
56k 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?
10
votes
2answers
8k 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?
114
votes
15answers
62k 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.
30
votes
2answers
26k 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 ...
40
votes
7answers
84k 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 ...
32
votes
15answers
120k 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 ...
10
votes
10answers
74k views

Login screen loops unless you login as Guest [duplicate]

I am running a VMWare Player with a Ubuntu 12.04 LTS Precise Pangloin 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 ...
31
votes
7answers
9k 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.
29
votes
7answers
48k 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?
101
votes
1answer
139k 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?
14
votes
3answers
52k 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 ...
5
votes
1answer
125 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?
20
votes
7answers
24k 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? ...
7
votes
8answers
34k 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 ...
9
votes
5answers
33k 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 ...
2
votes
1answer
7k 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 ...
14
votes
8answers
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 ...
8
votes
4answers
20k 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 ...
5
votes
3answers
21k 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 ...
11
votes
9answers
33k 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 ...
6
votes
1answer
650 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 ...
3
votes
1answer
991 views

Two different login screens on Ubuntu 18.10!

So i installed Ubuntu 18.10 fresh install and i did have the normal new login screen of ubuntu gdm3. Ive been downloading gnome themes and i noticed after i did everything(idk if its from installing ...
3
votes
3answers
5k 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?
19
votes
2answers
8k 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 ...
5
votes
2answers
10k 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 ...
4
votes
6answers
21k 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 ...
12
votes
7answers
53k 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 ...
4
votes
1answer
6k 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 "/...
3
votes
3answers
8k views

Ubuntu 17.04 with GNOME stuck in login loop

So I am using ubuntu 17 with GNOME and I can't login in anymore on my laptop. I have looked up this issue and I have tried several of the methods suggested: Uninstall and reinstall lightdm Uninstall ...
13
votes
0answers
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 ...
2
votes
1answer
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 ...
7
votes
6answers
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 ...
7
votes
3answers
4k views

Can't login after suspend on Ubuntu 17.10

Did a fresh install of Ubuntu 17.10 a few days ago on my Lenovo Thinkpad Edge (using an existing home directory on a different partition). When I close the lid and put it to sleep, on waking it I can ...
7
votes
3answers
12k 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 ...
3
votes
1answer
2k views

Change login screen styles in Ubuntu 18.10

To install theme for login screen I need to change /usr/share/gnome-shell/theme/ubuntu.css. But it is not there. What is the alternative for that file in Ubuntu 18.10?
3
votes
2answers
6k views

Why does my ubuntu 18.04 get stuck on the 'purple' screen after logging in?

Please provide me with a detailed answer explaining why my Ubuntu 18.04 gets stuck on the purple screen after trying to log in. Is it some bug in Ubuntu or do i need to install some additional drivers ...
8
votes
1answer
15k 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 ...
8
votes
3answers
4k 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 ...
7
votes
3answers
8k views

LightDM is running but does not display on login

LightDM is installed and running by default as a part of the Beta release. Yet, LightDM is not displayed at login time, rather a primitive, GDM like manager is the one we find at login time. I tried ...
6
votes
1answer
2k views

Resolution of the login screen is wrong on a second monitor

Is it possible to do changes to the login screen in Ubuntu 11.10? I'm running with a laptop and an external screen and in boot and login they're mirrored and has a weird resolution. To clarify: I'm ...
3
votes
2answers
9k views

Login loop, can only login as Guest. Ubuntu 12.04

My computer wont allow me to login unless its as guest. I have pressed Ctrl+Alt+F1 and can login using my administrator account there, but not in the normal interface. I have done updates and ...
0
votes
0answers
69 views

Couldn't connect to internet after upgrading from 16.10 to 17.04

I've upgraded my desktop from Ubuntu version 16.10 to 17.04. When I try to login I'm not able to login. See https://askubuntu.com/questions/995982/not-able-to-login-after-upgraded-from-ubuntu-16-10-...
11
votes
4answers
17k views

Is there an alternative to Windows Hello for linux

I purchased an alienware 15 r3 which comes with windows hello enabled which means all hardware included. I have installed Ubuntu 16.04 and couldn't find any package that can substitute for windows ...
9
votes
1answer
24k views

Restore Ubuntu 16.04 Login Screen

I installed Ubuntu Kylin Theme but I want to restore the original login in screen for ubuntu, I tried to uninstall the theme, purge and reinstall the lightdm and also change the default to gdm with ...