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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
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
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
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
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
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
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
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
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
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
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
28 votes
4 answers
8k views

"Authentication is required to update SMART data from" in 16.04

I upgraded to 16.04 [Ubuntu Gnome]. I am using a Lenovo Y700 with a GTX960M. After suspend or closing the lid I ended locked outside the login after that message appeared. It happened twice today, I ...
Andrés Parada's user avatar
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
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
25 votes
0 answers
24k views

Ubuntu 18.04 stuck at purple screen after login [closed]

Sometimes, when logging in after rebooting or when switching between users, after typing the password and confirming, I get stuck at a purple screen. Sometimes I can escape it with ctrl+alt+F3 ...
Qerubin's user avatar
  • 616
24 votes
10 answers
16k views

Accidentally modified .bashrc and now I cant login despite entering password correctly

I messed up bigtime with the bashrc file. I was installing Gurobi and I had to set path variables in the bashrc file. So, I replaced all the text in bashrc with the path variables and saved the bashrc ...
crypto's user avatar
  • 443
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
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
23 votes
4 answers
13k views

I consistently get two login screens

I consistently get two login screens! I enter credentials correctly and am immediately presented with a second login screen (no errors). Authenticating against the second screen completes a normal ...
MTGradwell's user avatar
22 votes
2 answers
569 views

Before you login you must answer me these questions 3?

I have two kids that love Ubuntu so much so that they are not doing their Math homework. So in the spirit of Monty Python, I would like to present them with something like: "Stop. Who would cross ...
user187493'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
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
20 votes
4 answers
3k views

How do I go back to KDE splash / login after installing XFCE?

I started with Ubuntu Karmic, and wanted to try KDE. So I installed kubuntu-desktop. Then I wanted to see how XFCE progressed, so I installed xfce4. I now have Kubuntu with an XFCE splash and login. ...
Tim Post's user avatar
  • 862
19 votes
4 answers
35k 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. Windows Hello is basically a face detection system added on Win10. It works with dual-camera ...
akxer's user avatar
  • 2,046
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
18 votes
2 answers
24k views

Will Ubuntu 11.04 use GNOME 3?

Will Ubuntu 11.04 use Gnome 3? If so, what differences for end-user is going to be? I know that there won't be Gnome shell, but what about the login screen? Will Ubuntu continue using that old (GNOME ...
Tadas N.'s user avatar
  • 307
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
17 votes
6 answers
18k views

Hibernate missing in login screen

Re-enabling hibernation by adding a rule to policy kit added the option to hibernate to the desktop session as expected, but not for the login screen. How can I enable hibernation right from the ...
Dusan Milosevic's user avatar
17 votes
4 answers
18k views

sddm blocks screen with on-screen keyboard in Ubuntu 20.04

I have recently installed KDE 5 (kde-plasma-desktop) on Ubuntu 20.04, and as part of the installation, it asked me to switch the login screen manager to sddm. When sddm starts (either on boot, or ...
dave559's user avatar
  • 368
17 votes
4 answers
6k views

Ubuntu 15.10 randomly crashing back to login screen

fresh install of Ubuntu 15.10 here. Everything works fine, but I'm getting random crashes back to the login screen. I pasted my syslog here: http://paste.ubuntu.com/12989589/ Edit: Confirmed bug on ...
Davernos's user avatar
  • 170
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
16 votes
3 answers
11k views

How do I set a picture for my user on the login screen in Lubuntu 20.04?

I would like to display an image of my choice instead of the grey icon above my username on the login screen: No doubt there is a setting for this somewhere, but I have failed to find it so far. How ...
Zanna's user avatar
  • 70.9k
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
15 votes
4 answers
51k views

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

I use a login list with faces and the icons and text are tiny in GDM. Is there an easy way to change the resolution of the login screen? I'm currently using 10.04 Lucid.
Dennis's user avatar
  • 2,483
15 votes
1 answer
25k views

How do I change login screen purple color to another one or image (if possible) on Ubuntu 17.10? [duplicate]

I want to know if it is possible to change the login screen background to an image, or if not, how to change the color from the default.
Molham Mohamed's user avatar
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
14 votes
3 answers
3k views

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

I'm the only frequent user on a system using gdm, but in the login screens' user list I am not moved upwards (due to most frequent use), and I cannot find a possibility to order the users manually. I ...
azrdev's user avatar
  • 343
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
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
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
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
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
5 answers
18k views

Is there a way to change user picture in Xubuntu, and actually display it on login?

I am aware that the way to change user picture, is creating a .face file on /home... The thing is, this only works when one checks the users and groups on System directory... When it's time to login, ...
Gibarian's user avatar
  • 197
12 votes
3 answers
50k views

Disable sleep mode after 5 minutes

I have Ubuntu 14.04 installed on my laptop. When I have my laptop plugged in to my tv to watch a movie, the screen goes black after exactly 5 minutes. I have to move the mouse, to see I'm at the login ...
Swekkers's user avatar
  • 121
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
12 votes
4 answers
375 views

Set a password, yet it logs in without one

My account is an administrator; I'm using Ubuntu 14.04LTS. I've set a password and set automatic login to OFF, yet when I wake up from suspension or reboot if I just press Enter or type in anything ...
Steam gamer's user avatar
12 votes
1 answer
347 views

Can I set a default "About Me" photo?

Is there a way to set a default "About Me" photo so that all users created in the future start off with the same user image on the login screen?
ændrük's user avatar
  • 77.2k

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