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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

LightDM is the default X display manager of Ubuntu. It starts the X server, user sessions and greeter (graphical login screen).

Key Features of LightDM:

  • Cross-desktop - supports different desktop technologies.
  • Supports different display technologies (X, Mir, ...).
  • Lightweight - low memory usage and fast performance.
  • Low code complexity
  • Supports remote login (incoming - XDMCP, VNC, outgoing - XDMCP, pluggable).
  • Easily themeable
  • Support for 3D
  • Offers guest sessions.

To understand more about LightDM and its role in the Ubuntu login process you may refer to this answer.

For more information on LightDM visit:

1709 questions
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How to change the LightDM theme/greeter?

I downloaded a couple greeters for LightDM, but I have not figured out how to enable them. Is there a way to switch greeter, either by graphical or command-line method?. I do not intend to change display manager, nor the background, but to change…
Tigull
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14 answers

How to disable automatic login in LightDM?

I was playing around with "User accounts" and somehow set automatic login. Now, when I start my PC, it just has one button named as "login". Clicking that button, directly logs me in to my PC. There is no music or no asking for password while…
iammilind
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3 answers

How can I use LightDM for user-defined sessions?

If I unterstand it correctly, LightDM has replaced GDM per default. I wonder if it's possible to make it run the things I put in my .xinitrc file ... what I need is an option below "Unity" and "Unity 2D" which says "Run a user-defined session". Is…
Philipp
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3 answers

Don't list all users at login with LightDM

I just upgraded to Ubuntu 11.10 and I was wondering if it's possible to not list all the current users and instead require the user to type in their username? My company's IT policies require that users not be listed on login screens. In Ubuntu…
Bryan
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4 answers

Can I set a default user in lightdm?

I've been playing with Ubuntu Oneiric on my netbook (where breakage isn't really a concern); I like the new lightdm login screen, but it has one minor annoyance: in addition to my own user account, there's another account for occasional use by my…
Sean Fitzpatrick
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12
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3 answers

Where do I place a logout script for LightDM?

Previously in Karmic, we created a logout script that does some work in the background on backing up a users home directory, this script was put in the /etc/GDM/PostSession directory. I can't figure out where to put a script that I want to run…
Kevin Daly
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12
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3 answers

Choose lightdm login screen location in multi monitor setup

How can I set the location for the login screen with lightdm in a multi monitor setup. If have two monitors (1920x1080) + (1920x1200) and currently after I boot the login is shown on the left (smaller) monitor. I would like to view it only on the…
lanoxx
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3 answers

Is there a list of all the possible configuration options for lightdm?

Every time I want to customise lightdm I find it frustrating that there is no obvious list of configuration options I could use in /etc/lightdm/lightdm.conf. Perhaps someone here knows where there is a definitive list of possible options?
airtonix
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10
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1 answer

lightdm doesn't run the display-setup-script script

To fight with dual-monitor resolution problems, I followed the advice found in other questions here related to session- and display-setup-script. I have the following…
Shade
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Where can I find alternative greeters for LightDM?

Is there a place where I could find a list of LightDM greeters and where I could download them? I would very much like to see some custom made greeters so I can fully customise my Ubuntu :) I know that one of the lead designers in Ubuntu once showed…
Mario Kamenjak
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Why is my system freezing when I switch users

Hello I've recently upgraded from 13.04 to 13.10 64bit. I'm running AMD graphics with the proprietary drivers. I have two user accounts. Mine(administrator) and my girlfriend's(standard) My girlfriend clicks "switch user" from my lock screen and…
Stephen__T
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4
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3 answers

Is it possible to log in as another user within an already-running session?

Is it possible to log in as another user within an already-running session in Ubuntu 11.10 (as it was with Xephyr or Xnest under GDM)?
detly
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4
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2 answers

lightdm.conf content erased, now stuck in low graphics mode

This evening I was attempting to disable the guest account and something went awry. Currently on boot Ubuntu enters low graphics mode. No specific error report. What did I do? Before this error occurred I added a line of code in lightdm.conf to…
user79318
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Change Icon for Window Manager at login

is there any way to change the icons for a Window Manager at the login screen? This one: The files are in /usr/share/unity-greeter/ that I know, but can I change the Icon for a WM if it has none? Thanks
martialblog
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LightDM and the need for a greeter in set-top box environment

Lightdm can be used in a set-top box environment, ie starting a configured X session as a configured user; in this case all data will be retrieved from the config file. Can lightdm work/be installed without any greeter, to minimise the footprint on…
Luigi Capriotti
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