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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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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Weird Behavior in Ubuntu System Monitor

I have got a Ubuntu 20.04 LTS Installation and recently installed lightdm (normally it seems to use gdm3) and now the system monitor is only showing the active processes and I can't switch to 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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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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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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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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The lightdm login screen is wrong

These are the steps I took to install lightdm: sudo apt update sudo apt install lightdm # I have set lightdm instead of gdm3 in the interactive menu sudo apt install slick-greeter sudo apt install ...
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Lightdm + Cinnamon: Missing System Tray Icons

If I use gdm3, the problem does not appear, instead if I use lightdm, the problem appear until I restart cinnamon: How can I solve the problem? EDIT: I have installed these two in the following ...
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Display Managers gdm3, xdm not working after upgrade to 20.04; lightdm stuck in login loop, only LXDE working [duplicate]

I just upgraded to Ubuntu 20.04. But I'm now stuck with problems with display managers. GDM3 (preferred DM for me) and xdm are just stuck at a black screen (with a blinking cursor/underscore). Next ...
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Slick-greeter wont stay persistent in Xubuntu

I'm running Xubuntu 20.04 and I've installed slick-greeter, I've also run sudo apt-get autoremove lightdm-gtk-greeter and yet when my computer wakes up from a sleep it still goes back to the lightdm-...
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How do I switch between users, without logging out?

I am using Lubuntu, my desktop environment is lxQt and screensaver is xScreensaver. I'm trying to figure out a way to switch between users, (e.g. when pressing Meta + L). Even though, it is possible ...
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How to install and use wayland on Ubuntu Mate 20.04

I have read that ubuntu mate has support for wayland for some time now and wanted to give it a try, because supposedly it's all around better for security and performance and a lot cleaner code. uname ...
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151 views

Failed to start Light Display Manager on boot for Ubuntu 20

tl;dr; Light Service DM is not starting. I have tried fixing it via GDM3, was unable to do so due to broken packages. I think that somehow NVIDIA is involved, but I am not sure. Where to start from ...
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Very slow graphics response after login when running Xorg on discrete AMD GPU

I have a headless server running Ubuntu Focal. It is based on AMD Matisse CPU and ASRockRack X470D4U motherboard. I recently added a Radeon RX 560 GPU for OpenGL and Vulkan development and tried ...
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Switched greeting on Ubuntu System; now doesn't Work

Yesterday, I switched my available greeting, on my Ubuntu System, from lightdm-webkit2-greeter to slick-greeter and after I rebooted my system, the boot sequence is stuck on the loading bootup screen ...
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how to report problem on ubuntu Wiki page? why there is lightdm and not gdm?

I wanted to ask why is there (here https://help.ubuntu.com/community/SoundTroubleshootingProcedure) in Step 1 lightdm package installed? I believe Ubuntu does not use lightdm but gdm, right? I cannot ...
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How to speed up boot time by tweaking services?

I changed the login manager to lightdm and disabled startup apps too. I was wondering whether there existed a possible way of holding back all services from starting up until i login into ubuntu. This ...
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How can I keep screen session alive after LightDM restart?

When I start a screen session from terminal emulator (PTS), it vanishes after I restart LightDM (sudo service lightdm restart). However sessions started from TTY are preserved. How can I keep screen ...
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Creating your own LightDmGreeter

I would like to create my own LightDm Greeter for Ubuntu 18.04. As I would like to put a process in the background that will constantly poll a camera to detect a user, that will allow user to log in ...
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280 views

Xubuntu 20.04 not utilizing Radeon driver amdgpu correctly

Background: Running a new (refurbished) Acer Swift 3 SF314-42-R6T7 with Radeon graphics, Xubuntu 20.04 Focal, recent installation, kernel 5.4.0-60-generic I have essentially the same problem as in ...
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Problems after disabing lightdm

I've Xubuntu 20.04, I wanted to set log in in terminal and then going to Xfce. So I've done: "systemctl disable lightdm". Reboot and indeed log in terminal, but startx didn't start, had to ...
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Unable to change desktop environment with Lightdm in Ubuntu 20.10

I just shifted to Ubuntu Mate 20.10. I prefer to use i3 as my window manager. However I am unable to login into i3 through lightdm! Even if I select i3 from the gear icon on the login screen, it keeps ...

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