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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How to use other than null sink when running PulseAudio with lightdm in headeless mode?

I start PulseAudio like this: sudo -u lightdm /usr/bin/pulseaudio --daemonize=yes --log-target=journal with the intention to use it with mopidy.service: [Unit] Description=Mopidy music server After=...
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Lock screen bug Ubuntu 20 (Ctrl+Alt+F7)

I have discovered a bug in my Ubuntu 20 that I would like to fix, I have searched everywhere but I have not found any solution. The problem is that when I lock the session with the button in the upper ...
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Changing font styles of lightdm-gtk-greeter

I can change my font using the following option in lightdm-gtk-greeter.conf: font-name = ... But I'm not sure how to change the size or weight. I tried putting the following CSS in my GTK theme: #...
what the's user avatar
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How do you lock the screen on suspend but not on hibernate when using lightdm's screen locker?

I want lightdm's screen lock to function on suspend but not hibernate, because I do not want to enter both a password to unlock the computer and the lightdm screen-lock password. This question has ...
Ronald's user avatar
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What do I modify to stop light dm from starting at boot

I installed MATE and lightdm and then set them to to start automatically $ sudo systemctl set-default graphical $ sudo systemctl start lightdm $ reboot System is now stuck trying to start light ...
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LightDM showing wrong version on Kinetic

Ubuntu Kinetic, 22.10. (Will soon update to Lunar.) Originally 13.10, upgraded via LTS versions since: 13.10 -> 14.04 -> 16.04 -> 18.04 -> 20.04 -> 22.04. I use Unity because I like it. ...
Liam Proven's user avatar
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Desktop login not allowed

Suddenly my Odroid mini PC with Ubuntu do not allow to login to Desktop. After I press Log In screen flashes with dark for one second and gets back without logged in. I found error in /var/log/auth....
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Lightdm display manager timeout error

In Ubuntu 18.04 using lightdm as a display-manager, but the status of the lightdm service is always activating and exactly at 90 Sec after service get started it was showing status=activating and ...
Sushma's user avatar
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Black screen with underscore after ASUS logo while booting Ubuntu 22.04.2 LTS

I am using Ubuntu 22.04.2 LTS on ASUS Zenbook-N501VW. But when i try boot my system it shows a black screen with underscore (_) sign after ASUS logo. I have tried the solutions mentioned in this ...
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Stuck in login loop, but only for one user

I was working on my Lenovo Idea Pad with Ubuntu when suddenly the screen froze, I could move the mouse and see the cursor moving, but clicking or pressing the keyboard keys had no effect, so I decided ...
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How do I get Xubuntu to stop blanking and locking the screen -- and sometimes rebooting -- all while unattended

I have 7 machines all running Xubuntu, and a couple of them keep exhibiting this behavior despite my attempts (outlined below) to quash it. I want these machines on 24/7, and I want to see their ...
ForDummies's user avatar
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Xubuntu freeze on lightdm login after upgrade to 22.04/22.10

I think it's the first time, that I ask a question here, since I found an answer for all previous issues. I upgraded my xubuntu 20.04 to 22.04 (and then on commandline to 22.10, because I hoped, the ...
woelfchen42's user avatar
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lightdm with single application doesn't use full screen

I have an old iMac (imac5,1 late 2006) running Ubuntu 22.04 that I'm using as a TV with a USB TV tuner (). At present it logs in to the desktop and starts kaffeine; I'd like to cut out the desktop as ...
Richard Barraclough's user avatar
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Cannot SSH to Ubuntu 18.04 After Switching from gdm3 to lightdm

Setup new Ubuntu 18.04 server with default gdm3. Installed openssh-server and was able to SSH to the server. Installed Teamviewer 15 and encountered issue where it fails to connect, and the solution ...
Suzan Kowalski's user avatar
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RDP only works while a monitor is attached to the host

Ubuntu Server 22.04 with lightdm and GNOME. RDP only works while a monitor is attached to the host. Doesn't RDP initiate a whole other separate session (like in Windows Server), or is this basically ...
Edward A. Ludwig's user avatar
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lightdm can't start

I tried to use lightdm in WSL2 ubuntu, however it doesn't work. I tried reinstall lightdm and polkit. It seems like something about dbus is wrong. ubuntu:22.04.1 GUI:GNOME ding@LAPTOP-V70877ES:~$ sudo ...
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Blue tinted screen after login

I freshly installed Ubuntu Server 22.04.1 and added ubuntu-desktop with lightdm to it. Everything is running fine, besides the fact that the screen is getting tinted blue after I log in. See attached ...
aerosoul's user avatar
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VNC Crashes right after login

While I'm connecting to a pc via VNC it works smoothly but when I'm trying to log in a specific user which I added the user via the Join to domain process the VNC crashes right after, the login worked ...
Universal's user avatar
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Configuring LightDM Lockscreen

Through some online forums I determined that, with lightdm, I could bypass the authentication greeter after a screen lock by simply switching the VT/TTY. Then I came across information from here: ...
Sterling Butters's user avatar
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How to make LightDM login screen have the same background as the desktop background in Ubuntu MATE?

I am using Ubuntu MATE 22.04. Back when Ubuntu used Unity, the background of the LightDM login screen automatically changed when a different desktop background was selected. Can something like that ...
Archisman Panigrahi's user avatar
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Configuring vnc server with login screen

At this point I've researched about every forum post there is on the topic and I can't seem to at least understand why I am unable to accomplish this task. Many/most posts are several years old so I ...
Sterling Butters's user avatar
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22.04 black login screen on Early 2008 iMac

for some days now I only get a black screen after booting. Detailed error description: During the boot, the display resolution seems to be messed up and everything is displayed in a distorted manner. ...
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Cannot log into primary user Ubuntu 22.10

I recently installed 22.10 on my Acer Predator laptop and have had no problems until two days ago. I was playing the new Dwarf Fortress through Steam, the screen went black except for the top bar and ...
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Changing resolution of the greeter

So I've installed XUbuntu on a machine that is connected to a 4K TV, but the machine itself cannot handle 4K. It tries, which results in a glitchy mess. Luckily, I can ssh into the machine and force ...
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Allow multiple users to be logged-in on the same account using XDMCP and display-managers in Ubuntu 22.04

I have read somewhere that Lightdm doesn’t support multiple users to be logged in at the same time, and that can I confirm, because when I’m trying to login on an already logged on machine, it fails. ...
AnxiousDino's user avatar
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Problem with display manager in several kernels

I'm having a problem starting the GUI on several kernels - now for a while and it is getting more severe now: The general problem is, that the boot of the system stops at the point when starting ...
Besto's user avatar
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unable to boot into my machine because of lightdm, and tty doesn't help

Probably not the best title but I'm kinda going crazy here. I'm pretty sure I messed up something with my lightdm configuration (i tried to "restore" it since an apt package install told me ...
quartztz's user avatar
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apport-autoreport.service loaded failed failed Process error reports when automatic reporting is enabled

OS Ubuntu 22.04.1 LTS Kernel 5.15.0-52-generic DE: GNOME 42.5 CPU: 11th Gen Intel i5-11300H (8) @ GPU: NVIDIA GeForce GTX 1650 Mobile Memory: 3173MiB / 15795MiB I am not ...
archerlinuxer's user avatar
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Screen flicker on 'Lenovo ThinkPad P16 Gen 1'

Whenever I close the display and open it back up, the screen starts to flicker. It doesn't go away, and the only way I know to get back to normal screen is to restart the machine. I have tried lightdm,...
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Xubuntu Studio - login prompt opens on wrong screen on dual-monitor setup

This PC is Ubuntu Studio with Xfce, used as a gaming emulator and home cinema. Primary display: Dell 2009W (1680x1050) - monitor Secondary display: Panasonic PTAT6000 (1920x1080) - projector GPU: ...
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I have locked myself out of my computer

I am now running Ubuntu 22.04 LTS “Jammy Jellyfish” As you could expect from my other post on custom keyboard issues, I have messed up again with my /usr/share/X11/xkb/rules/evdev/files The unexpected ...
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Can't log in from LightDM

After updating with dist-upgrade command Can't log in from LightDM This error is displayed in the log file (lightdm:709): CRITICAL **: session_get_login1_session_id: assertion 'session != NULL' failed ...
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Releasing CAPS LOCK with the SHIFT key

I want my Shift key to do caps and special characters without being affected by Caps Lock. I want to release Caps Lock with Shift. I don't want Shift to toggle. How can I do this?
Jason's user avatar
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unknown guest account with password created

i am using ubuntu 20.04 i want guest session for students so i enabled it by following How to enable Guest session on Ubuntu 20.04 Focal Fossa Linux 30 April 2020 by Lubos Rendek terminal commands 1....
Stone's user avatar
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Ubuntu 20.04 x11vnc black screen with lightdm

I am running a fresh installation of 20.04. I am new to this, so I followed this video for installing x11vnc. The problem I'm facing is that the screen shows black on the remote pc when there is no ...
Ashu's user avatar
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After attempting to upgrade from 18.04 to 20.04 login LightDM is black (blinking cursor), can't access v-terminal or recovery mode

I attempted to upgrade from 18.04 to 20.04 to no avail. After some issues I restarted my computer and now the login screen is just black with occasionally a blinking grey cursor in the top left. I've ...
Ray C's user avatar
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22.04 upgrade from 20.04 - stuck after login; lightdm problem?

Yesterday I upgraded my Ubuntu 20.04 Pixelbook (full Ubuntu, no Chrome nonsense) to 22.04. However, the system now gets stuck immediately after login. After I successfully log in, the login prompt ...
Kreuzfeld's user avatar
6 votes
2 answers
834 views

Desktop takes time to show up after entering password on login screen

After entering my password at the login screen, a blank screen appears with a mouse cursor which we can move and after ~2 minutes the desktop shows up. This happens not only after booting but also if ...
user1626165's user avatar
1 vote
1 answer
320 views

Firefox can't create temp dir for guest user in lightdm [closed]

I've setup latest Ubuntu 22.04 (jammy) to use lightdm, and enabled the guest account via a lightdm config. This seems to work fine, and can login with an ephemeral guest account that gets removed on ...
Snappawapa's user avatar
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989 views

Boot Problems in Ubuntu 22.04

I have several problems when booting into mate under Ubuntu 22.04 The boot starts both the console and tty1. Makes logging on in text mode nearly impossible The graphical boot starts lightdm twice ...
Phillip Fanwick's user avatar
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376 views

Why do lightdm and Xorg cause so much CPU load on my Xubuntu 20.04?

What is it that loads the CPU so unreasonably? (Lenovo W530 with Xubuntu 20.04.4 LTS, currently using kernel 5.4.0-110-generic x86_64). After an upgrade, the CPU on my Lenovo W530 laptop spins at an ...
Adalbert Hanßen's user avatar
2 votes
1 answer
1k views

Ubuntu 20.04 Can't get passed login after update

4 days ago, I decided to install the update that "Software and Updates" has been suggesting for a while. After the progress dialog was gone, I closed the laptop lid, expecting it to sleep(...
AliAndArdDev's user avatar
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Light Display Manager 1.30.0 won’t start seat0 on Ubuntu 20.04

I’ve been messing around with a fresh Ubuntu 20.04 install on an HP 17 laptop. I was feeling curious and adventurous and installed enlightenment, deepin, and arctica desktops, with the intention of ...
Matt's user avatar
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When installing various desktop environments, how can one prevent user interactions requesting a selection of display managers like LightDM and GDM3? [duplicate]

I have a Bash setup script for Ubuntu. It is intended to be designed to minimise the user interactions needed to get to a fully set up system. In the script, there might be commands like the following:...
BlandCorporation's user avatar
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6k views

How do I set user background for lightDM login screen?

I am quite lost on how to set user-specific background. There does not seem to be many resources on this matter. Setting background from gnome-control-center does not work. org.gnome.settings-daemon....
Abastro's user avatar
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Don't boot shortly after upgrading to 20.04 - but can launch startx manually on recovery mode

Using Kubuntu with Gnome installed (I think this is Ubuntu with extra steps but it's work computer, I did not choose flavor) Computer is Lenovo T440P with 16 Go RAM (Core i5, integrated GPU) Upgraded ...
Simon's user avatar
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1 vote
1 answer
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Ubuntu 20.04 - LightDM Auto Login Not Consistently Working

I've got a fresh install of Ubuntu 20.04, but can't get auto login to work consistently. The only workaround i've found is to add a 2 second wait time, but i want to get to the root of the issue. ...
sromer's user avatar
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3 votes
1 answer
6k views

How do I rice my Ubuntu Desktop?

I saw a few of the posts on r/unixporn with beautiful layouts and styled desktops with beautiful icons. While the only thing I have done is position my dock on the right lol. I recently had an issue ...
Barry Scott's user avatar
1 vote
0 answers
202 views

Fluxbox + lightdm on ubuntu 20.04 running on BBG

I have configured ubuntu 20.o4 LTS for ARM Cortex (BBG) processor, connected LCD. I am trying to configure fluxbox and the lightdm window manager. Fluxbox and lightdm is not showing login window. When ...
mrudula patil's user avatar
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413 views

Distortion and tearing effect on internal 4k screen (HP elitebook laptop) with gdm/lightdm

I have a weird distortion and flickering effect happening when embedded videos (inside text content) are running in web browsers or when I scroll in any sort of scrollable content (e.g., webpage, ...
Fabian's user avatar
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