Questions tagged [lightdm]

LightDM (Lightweight Display Manager) is a Display Manager for the X.org X server. It is the default X display manager of Ubuntu. LightDM starts an X session and presents the user with a graphical login screen, so the user does not have to issue commands such as `startx` to start the X server

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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 ...
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1answer
44 views

Login Loop and strange PWD

I'm getting the infinite log in loop on Ubuntu for just one of my user accounts - I've tried all of the recommended solutions (modifying .Xauthority, /temp/ and using lightdm) Strangely when I ctrl+...
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1answer
3k views

Ubuntu 14.04 update lightdm broken

I think the screenshot explains it better than I can. I'd like to post a helpful bug report on Launchpad, but how do I even explain this? This seems to have come on as a result of a failed update - ...
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0answers
25 views

Hirsute (21.04): Keyboard not working at login (lightdm)

I was messing around with some X server settings and nvidia drivers and found that on a reboot I couldn't type my login password. The mouse works fine. The keyboard works fine on another computer. I ...
7
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4answers
39k views

Can't login in from LightDM

But just LightDM. It worked this morning, just does not seem to be working this evening. This seems to occurred after a shutdown after a wakeup from hibernation. I always get a password denied sort of ...
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2answers
482 views

Restart desktop without losing programs?

I can restart my desktop from a console window (Ctrl+Alt+F1) with this command: sudo service lightdm restart This will present a fresh login screen and closes all programs running on the desktop. ...
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2answers
1k views

Login problem in 20.04 : can't type anything in the login box

Ubuntu 20.04.1 LTS / XFCE / Dell Latitude 3460 recently upgraded from Ubuntu 18.04. (1) After suspend first wakes up to an Unlock screen with a simplified log-in window (with just one Unlock button ...
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2answers
794 views

Ubuntu 18 login loop + startx works

So recently I got stuck in a login loop on Ubuntu 18. I tried some solutions posted here but none of them works for me so far. Here's what I tried by accessing terminal from login screen: Checking ...
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1answer
3k views

Autologin Ubuntu 14.04 Desktop Session As Guest And Allow Web Browser

How can you autologin session as Guest? Bonus for if you explain how to limit the guest to only web browser functionality? (and save no changes) I see the thread here (How to enable guest account ...
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1answer
21 views

xubuntu / lightdm doesn't detect display properly on first login but works on second login

I have an xubuntu 20.04 PC connected to a 40" Samsung TV. Xfce / Lightdm is set to autologin. When it logs in, the detected display is wrong (it just says "default"), and the screen ...
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0answers
24 views

Ubuntu login loop Existing solutions do not work

I am using Ubuntu 18.04. One day my desktops suddenly turned black: I can only saw the terminal and logos from Ubuntu desktop and the mouse pointer is also invisible, so I shut down the machine. When ...
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0answers
19 views

Tell lightdm not to close X server before user closes connection to it

I am using LightDM on Ubuntu 20.04. I was wandering if there is a way to prevent closing of the X server on switch-user and/or logout. More details: My app is alive during multiple user sessions on ...
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1answer
6k views

Must manually restart lightdm to have it appear

I recently did an Ubuntu command-line install on my work laptop, then install Mate (core) and lightdm. I have an Intel graphics driver. When I turn on my computer, it boots to a black screen. Pressing ...
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0answers
14 views

Got an unexpected dock

I installed lightdm on my ubuntu 20.04 , and then I switched back to gdm3. user login page is changed But the desktop environment is not changed yet , and I am facing many problems in it. I am totally ...
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0answers
155 views

Can not access tty terminal

My HP Probook has problems with Display manager. Basically, for now I can not access even login page (While I am on login page, I can access tty isn't it ? But it is unreachable for now). I do not ...
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2answers
5k views

18.04 Error while booting. Hangs on line “stopping user manager for uid 123”

My sisters main computer is having major problems booting up and I cant quite figure it out. During boot it hangs on line "stopping user manager for uid 123". I have done both sudo dpkg-configure ...
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0answers
52 views

Cannot execute ANY graphical program from terminal

First of all this only happens if try to launch applications from the terminal. If i execute startx nautilus from a TTY it's able to nautilus is able to init. The $DISPLAY env var it's ok, it is set ...
2
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1answer
3k views

Ubuntu blank purple screen on startup

I have Ubuntu 14.04 32bit LTS installed along with Windows 8 (dual boot). I do not have any graphics card(nvidia ,amd ,etc). I have Intel hd graphics driver. It worked fine for many days, but now, on ...
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1answer
147 views

set gamma when lightdm starts

I want to set the following when booting lightdm: xrandr --output eDP1 --gamma 0.8:0.8:0.65. I have tried: Creating a startup application (works, but only after loggin in. setting display-setup-...
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0answers
33 views

How to get rid of login loop in ubuntu 18.04

I recently installed flutter and using documentation from https://flutter.dev/docs/get-started/install , when i added the export in .bashrc # ~/.bashrc: executed by bash(1) for non-login shells. # see ...
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0answers
37 views

Login loop with lightdm, startx works, .xsession-errors.old contains systemctl: unrecognized option '--value'

I got a login loop in Ubuntu 18.04.5 LTS, startx works, installed ubuntu-desktop and made it the default and the login loop persisted, reinstalled lightdm stayed the same, after booting with startx, ....
0
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1answer
94 views

Upgrading to 21.04 leads to “screen lock requires gnome display manager” and random freezes while inactive

I upgraded my workstation (AMD threadripper + NVidia RTX 3080) from Ubuntu 20.04 to 21.04 with do-release-upgrade. After the upgrade when I logged in, there was a popup message saying "screen ...
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0answers
78 views

Lightdm can't start xserver

First things first, hello :) I ran systemctl disable lightdm.service from recovery mode. After that i reboot my pc and typed sudo lightdm start ; startx. I started a graphical section but when i ...
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0answers
103 views

remote display freezes & poor performance (x2go, XFCE, lightdm)

I have a server runnning Ubuntu Server 20.04 with XFCE4 (lightdm) and x2go. On the client side I use the x2go client for windows on windows 10. Since the client and the server are usually in the same ...
6
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1answer
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 ...
2
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1answer
130 views

Can't get Lubuntu GUI working after switching from Gnome Desktop

I have an Ubuntu server running 20.10 and I was able to install Gnome Desktop Environment and that worked for me just fine but I recently uninstalled that to get Lubuntu instead and now I can't get ...
0
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0answers
22 views

Cannot run web-greeter irror showing

I installed web-greeter from the instruction mentioned here How can I install lightdm-webkit2-greeter? The webgreeter installed succesfully but when i run it within my desktop session as mentioned ...
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0answers
82 views

Ubuntu 20.04 Install minimal xorg with lightdm

I am trying to install a minimal 20.04 (bento vagrant based), with lightdm installed. When I try to install lightdm, gdm3 is also installed and preferred along with wayland. Is there an actual recipe ...
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0answers
21 views

Switching between users in XFCE / LightDM without locking session

When I was using KDE with KDM it was very simple to switch users. After I logged in multiple sessions I could easily switch by pressing ctrl+alt+f7 and ctrl+alt+f8 and so on. It was seamless because: ...
39
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3answers
64k 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?
2
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1answer
824 views

Change Gsetting with script on Logout

System Ubuntu Raring Ringtail (13.04) from fresh installation. Purpose Main: Change gsetting (desktop wallpaper) with script on user logout. What's I've Done : (carefully read) I try to stop an ...
5
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2answers
2k views

Xubuntu lock screen appearing twice

I'm running Xubuntu 15.10. When I leave my machine for an extended period of time, I return to find the screen locked by light-locker. I can then enter my password, and it is accepted, but then the ...
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1answer
13k views

No desktop appears after logging in using XDMCP

I just installed a test machine with Ubuntu LTS 14.04 and I went to configure the XDMCP access and found that the file /etc/lightdm/lightdm.conf is not there anymore. In Google I found that now it is ...
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2answers
6k views

Ubuntu 15.10 hangs on “Starting light display manager” on bootup

I recently updated to 15.10, and now when I boot up, It gets stuck on "Starting light display manager" part of the boot sequence. I've purged and installed xorg, lightdm, nvidia drivers, all about a ...
5
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1answer
207 views

How to disable suspend in 20 minutes from the lightdm login screen?

Please kindly could you tell how to disable entering the suspend mode in 20 or 30 minutes when the system is idle and the lightdm login screen is active (no user is logged in). On our machine the ...
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0answers
124 views

GDM3 Crashes system when external monitor connected with Wayland

I installed Ubuntu 21.04 today and would like to use it with my external monitor. However, I have discovered that connecting the monitor before startup made the system hang at the purple login screen. ...
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0answers
58 views

How to switch from lightdm theme to gdm3 theme

im new to ubuntu (i know that everyone says that but i installed it like 3 days ago) and i had a problem that when ubuntu goes to sleep after like 15 minutes of afk i cannot turn on the monitor i did ...
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2answers
1k views

Ubuntu doesn't boot properly after forced shutdown

Last night Ubuntu crashed and by pushing the power button on my laptop for 6 seconds I did a force shutdown. After that Ubuntu 16.04 doesn't boot properly which I guess is because of Gnome. My system ...
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1answer
1k views

Issues with Lightdm and gdm3 on ubuntu 20.04

I have been using ubuntu 20.04 since release, I started with gdm3 and then I got the infamous login loop error which I couldn't solve without switching to Lightdm. The issue is when I switch to ...
0
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0answers
36 views

lightdm black screen

I installed nvidia drivers (driver 460). For that I did the installation via tty as nvidia want. To do that, I did systemctl disable lightdm.service because a systemctl stop lightdm.service didn't ...
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0answers
226 views

Ubuntu 21.04 - AD Integrated From Installer - Cannot use graphical login for AD user

I have a Samba4 AD running on my network (let's call it myhome.net) I have a user named aduser configured. I joined my domain from the installer, but when I first logged into the system with my local ...
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0answers
29 views

gedit & terminal don't shows characters like * in ubuntu

When I open Gedit or Terminal , they don't shows me characters ( like * in Gedit ) and if I select the not showed characters with mouse ( that in terminal change their color to white ) terminal shows ...
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2answers
21k views

Ubuntu 18.04 stuck in login loop with missing .Xauthority file

My computer running Ubuntu 18.04 is stuck in a login loop. I am using lightdm as my display manager, but trying to switch to gdm3 didn't fix the problem (I was still stuck in a login loop). I have ...
0
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0answers
27 views

Oracle VM-Ubuntu 16.04 Endless Login Loop

I am having a problem with not being able to login into UNBUNTU 16.04 on my Virtual Machine. When I examine .Xsession-errors I get the following. Error of .Xsession-errors. I have already tried to ...
6
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5answers
4k views

lightdm: cannot type password on login screen

I am running 12.04 LTS, fully updated. My system is configured to automatically log me in into my account. Auto-login works fine. However, sometimes I need to access the unity-greeter/lightdm login ...
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0answers
29 views

Add custom indicator to lightdm-slick-greeter

I'm trying to add a custom indicator to the lightdm-slick-greeter I'm using. I have 2 batteries in my laptop and would like to be able to see both batteries on my loginscreen. I looked through a few ...
0
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1answer
14k views

Ubuntu 16.04: display manager fails to start

Reposting the question from: https://unix.stackexchange.com/q/314129/193223 I recently upgraded from Ubuntu 14.04 to 16.04 after which the display manager stopped working. Assuming it's due to the ...
2
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2answers
5k views

Change lightdm-gtk-greeter background?

I've been Googling like a maniac trying to find an answer, so I've now decided to ask here. How do I go about changing the background of the login screen? (lightdm-gtk-greeter). It currently uses ...
1
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1answer
77 views

Night Light Not Working on LightDm

I am running Ubuntu 20.04.2, and recently switched my desktop manager from gdm3 to lightdm because the GUI from gdm3 wasn't working properly after some NVIDIA driver problems. So far, lightdm has been ...
4
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1answer
6k views

Change lockscreen in MATE?

I want the lightdm-webkit-greeter to be mine lockscreen, do you know how to change it? I found a way how to add Xscreensaver screensavers to mate-screensaver or even change background, but no word on ...

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