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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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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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 ...
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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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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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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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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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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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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 ...
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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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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, ....
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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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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 ...
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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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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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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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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 ...
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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: ...
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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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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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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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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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219 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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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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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 ...
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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 ...
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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 ...
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How can I know which service is shifting my background down and making my background blck?

When I run Ubuntu 20.04 first I see the background correctly, then after some services starts up the background turns to be black. I tried to list the startup services using: sudo service --status-all ...
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Can't login to default user after editing gdm3 resource on Ubuntu 20.04

I was trying to edit my gdm3 resource file to change my login theme etc. After that, I can't log on and was stuck in a black screen loop. I tried to log into tty and install lightdm but I got an error ...
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Does Ligntdm require specific configuration or clean-up of SDDM files after install on Lubutu 20.04?

I'm evaluating Lubuntu 20.04 for a custom application. Customisations include a static IP address, vnc service, an auto-login for a non-admin user and halting of all non-essential services to ...
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Hi after rebootting and logging in I get a blank screen with cursor no lightdm

Hi after rebootting and logging in I get a blank screen with cursor no lightdm installed the version is 5.4.0-66-generic I tried How to fix blank screen with mouse pointer on Ubuntu install reboot? ...
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lightdm does not switch back to gdm

Hello i am using ubuntu 20.04 and i tried lightdm but i did not like it so i wanted to switch back to gdm3 using the command sudo dpkg-reconfigure gdm3 then before restarting i used the command cat /...
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Ubunutu 20.04 stuck after login screen

When I try to login to Ubuntu upon boot, it is not loading and instead it gets stuck on the purple screen (When I enter my password and press enter, I am brought to a purple screen but not my desktop, ...
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How to disable the “screen locking disabled” notification in gnome 3.38?

This message pops up after every login, this started happening when I removed the desktop icons gnome extension - DING https://extensions.gnome.org/extension/2087/desktop-icons-ng-ding/ (I'm using ...
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How to remove the Xubuntu Login screen in Ubuntu 18.04 (and NOT 14.04)

Apart from Gnome I had / have Unity desktop in my Ubuntu 18.04. Later I installed Xubuntu over it. Change the desktop background with windows wallpaper. The same wallpaper was automatically taken by ...
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apt install xfce4 also installs gnome

I have a small server with Ubuntu server 20.04.2 LTS installed. I wanted to also have a desktop environment on it so I run: sudo apt install xfce4 Then I chose LightDM during install. After a reboot I ...
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Settings cannot be modified LightDM GTK+ for Lubuntu 18.04

I installed Lubuntu 18.04 on an old 32 bits computer. I do not like the default UI and its weird icons (including those for Firefox and other famous ones) eg for gnome's but the LightDM GTK+ settings ...
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Can't start AwesomeWM from Ubuntu Maté 20.10

I have installed Awesome WM on my Ubuntu Maté 20.10 setup today. When I log out and select Awesome inside the login screen of LightDM, Maté gets loaded instead of Awesome. When I do some research on ...
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Disable Power Prompt When Shutting Down Ubuntu 16.04

I am running Ubuntu Desktop 16.04.7 LTS inside a KVM/QEMU VM. I manage this (and other VMs) via the virsh CLI, including starting and shutting down the VM. No matter what I do, when I issue the ...
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Ubuntu 20.04 LTS - Why am I only in one group?

I am experiencing the same problem as noted at: Why my linux account only belongs to one group? I am running 20.04 and GDM. I've also: Followed every suggestion I could find related to disabling ...
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Lightdm is very slow to load, how to safely update .config files to remove depreciation warnings?

My system info: jovial@xpsl502x:~$ neofetch .-/+oossssoo+/-. jovial@xpsl502x `:+ssssssssssssssssss+:` --------------- -+ssssssssssssssssssyyssss+- ...
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Can't boot after misconfigured default display manager

First, I was stuck in a login loop on Ubuntu 20.04 and tried to reconfigure defaut display manager using dpkg-reconfigure lightdm Here, I might have changed the default display manager from (maybe: ...
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Web-greeter Issue

I am having issues getting the web-greeter to work for lightdm. I just get a black screen at boot and when I run the web greeter test I get the following output: 2021-03-01 12:25:09 [ DEBUG ] objects -...
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VirtualBox cannot start Ubuntu 18.04

I started up VirtualBox 6 this morning, and the login screen was stuck in Ubuntu Mate. The host OS is MacOS Sierra 10.12.6 I updated to the latest version, 6.1.18, but the problem continues. Ubuntu 17....
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Desktop Wallpapers Switch Between Logins (Ubuntu Studio 20.04)

I am running Ubuntu Studio 20.04 and have an issue with logging into the same account but seeing different desktops. It started when I logged in and all workspaces had reverted to default wallpapers. ...
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Need to enter password 5 to 10 times at logon screen after intsalling lightdm

Hi I am sorry but I do not have much knowledge on Linux or Ubuntu OSs. I installed a fresh copy of 18.04 LTS and upgraded to 20.04 LTS. I have an NVIDIA RTX 2080 and installed the NVIDIA Drivers ...
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Keyboard backlight turns off when typing passward at login

I set the keyboard to be backlit using xset led on. But recently, at the lightdm login prompt when I start typing the password, the light goes dark. After I log in I can reissue the xset command at ...
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lightdm change badge icon login for “ubuntu on wayland”

I have changed cinnamon login badge icon with: /usr/share/unity-greeter/custom_cinnamon_badge.png I would like to change the "ubuntu on wayland" badge (which is empty) in the same way, for ...
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190 views

XRDP exits emediately after login

I installed xrdp on vps based on this instruction XRDP exits emediately after loging in from windows 10. UBUNTU 20.04 display-manager: lightdm desktop: xubuntu-desktop xrdp-sesman.log: [20210225-20:43:...
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External monitor does not wake up properly

I'm running Ubuntu 20.04 with Xfce using lightdm, and I have a very annoying issue. I have an old-ish Dell external monitor (slim CRT I think, it's way heavier than an LCD but only a little thicker) ...
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47 views

How to display CLI display manager after remotely stopping Lightdm?

I have a Raspberry Pi with a local monitor, local keyboard and mouse. Generally I would use it as a web server, but sometimes I will watch any TV with it. I think my Raspberry Pi heats up a little ...

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