Questions tagged [lightdm]

LightDM is a lightweight X11 display manager. It can use different greeters in the style of different desktop environments.

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1answer
53k views

What is LightDM and GDM

What is LightDM and GDM? In Linux operating system I heard both but I don't know about them and what is called? Where they are used? Are they related to display?
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5answers
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How to disable X server autostart in Debian Jessie?

I have a remote machine running Debian 8 (Jessie) with lightdm installed. I want it to start in no-GUI mode, but I don't want to remove all X-related stuff to still be able to run it though SSH with ...
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6answers
23k views

When I log in, it hangs until crng init done

When I log in with LightDM on my laptop running Debian Unstable, it recently started to hang for around 2 minutes until journalctl shows the message kernel: random: crng init done. When I press random ...
14
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1answer
27k views

~/.xinitrc not being run

I am not able to run my ~/.xinitrc (~/.xsession) scripts when logging into my computer. I'm using Xubuntu 12.10 with vanilla lightgm as the login manager. Both these files have the right permission (...
9
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1answer
501 views

Wrong role and type on login

I'm on an Ubuntu 14.04 derivative, elementary OS Freya. I have installed and configured SELinux using the selinux-policy-default package, which contains a lot of modules. I've also added my user to ...
8
votes
5answers
36k views

auto login on xfce in jessie

I have started running Jessie (Debian 8) with a LightDM/Xfce desktop on my HTPC after it grinding to a near-halt on W7. One of the things that I cannot get past is having to type the password -- not a ...
8
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5answers
14k views

Locking the screen via CLI?

Is there any way that I can lock the screen CLI-style? I'm trying to target as many desktop managers as possible (mostly LightDM, but GDM, KDM, SLiM, XScreensaver, etc. would be great too), but I can ...
8
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1answer
14k views

Configure Lightdm (GTK) for last saved or a default user and focus on password?

I've looked at the man pages and the configuration files but found nothing (but maybe I'm missing something). I see only many options for autologin. From a few googles I've read that the KDE version ...
7
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1answer
3k views

Autostart all LightDM seats and show one as default

I configured a media-center server running Debian with LightDM, Leapcast and Plex. What I want to accomplish is the following. There should be three LightDM seats, one default seat on which I can ...
6
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3answers
18k views

Change the keyboard layout in LightDM

I installed LightDM on an Arch Linux system (using pacman) and it runs fine, except, that if I try to type a special character (like "@", "$", ...) in the user or password field it doesn't do anything....
6
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2answers
718 views

When is the appropriate time to start Redshift using upstart?

I have been trying to get Redshift to start before login so that the bright welcome screen does not blind me, in particular when switching users. Running Redshift as a service does not seem fully ...
6
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1answer
1k views

Does restarting of Display Manager (e.g lightdm) restart X server as well?

If I restart the Display Manager, e.g lightdm, will X be restarted as well ?
6
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2answers
859 views

How do I get sound to work outside lightdm

If for whatever reason I sudo stop lightdm running on mint and just use a simple xinit session with mutter, is there some way I can get sound to work? Whenever I do that, it seems there's no sound.
5
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3answers
14k views

How do I change my default session?

How do I change the default session I get when I log in? I'm on Debian jessie. I tried changing settings on gdm3, tried installing lightdm and following this but it's just not working. For more ...
5
votes
4answers
7k views

How can I disable lightdm auto-login from the command-line when isn't possible to get a GUI session?

Suppose auto-login to a session is active in Ubuntu. So there will not be an opportunity to select a session (e.g gnome, unity, kde, etc). But if the environment is corrupted there is no way to escape ...
5
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1answer
3k views

Can't export environment variables on X session start

My setup is: Debian testing (stretch), up to date LightDM with autologin enabled Awesome window manager bash, in ROXTerm or XTerm I don't seem to be able to set own environment variables and get it ...
5
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1answer
1k views

Lightdm service - contradictory results for `status` command

When I run in my gnome-terminal: service lightdm status everything looks OK and it is as expected: lightdm start/running, process 1221 But when I run: service --status-all 2>&1 | grep ...
5
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2answers
18k views

Lightdm won't start automatically on boot

Every time I boot my PC Ubuntu keeps dropping me to TTY 1 where I have to log in and then do sudo lightdm start just to log in again, which is very annoying I have already tried removing and re-...
5
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0answers
782 views

Display manager on multiple tty

I recently upgraded from Fedora 23 to 25, which seems to have broken my display manager configuration. I was using lightdm and was able to switch between 3 GUIs running lightdm by just hitting ctrl+...
5
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3answers
4k views

Need to auto-login after logout on ubuntu

I've set up a kiosk using Ubuntu 12.04, and I'd like to have it autologin after a user logs out or if the screen locks, in case someone manages to get back to lightdm or tries to login to the non-...
4
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2answers
11k views

Set lightdm user picture

How can I set user pictures on Debian with lightdm? Xfce does not seem to have a GUI facility for user management at all. I have tried installing gnome-system tools that contains user management ...
4
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1answer
4k views

How to execute command before user login on linux

That's a question I've seen several time for several Linux flavours, so let's try to be exhaustive. What is the method to execute script/command/program before and after user login into its desktop ...
4
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0answers
62 views

Problem with mouse area not reaching lower section

Under Debian 9.3 and 9.8 with OPENBOX and LIGHTDM. I have a problem with the mouse pointer on screen. Depending on the orientation, there is a section on screen that the mouse pointer doesn’t go. BUT, ...
4
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0answers
614 views

“No protocol specified” when starting Xorg via lightdm, but works when started directly

To start the X server on boot, use of a display manager such as lightdm seems to be the preferred method. However, if I start X by starting the lightdm service, I get a "No protocol specified" error. ...
3
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3answers
83k views

Enable root login from GUI

I just installed Mint 16 and I see that root user is not available at login screen. I log in from normal user and went to "Login Window" option and there I set "Allow root login". Then I restarted the ...
3
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1answer
293 views

Displaying system information at graphical login prompt

I am setting up Debian computers for my high school and I would like to somehow customize LightDM to display system and network information at the login screen. The big picture is the following : ...
3
votes
1answer
2k views

What are the commands to logout and shutdown with a session manager?

I decided to write my own DE using these instructions here it worked and I can login however I didn't use a panel so I don't have a logout button or a session manager. I've decided to write my own ...
3
votes
1answer
296 views

Change lightdm keyboard layout US to Portuguese Arch Linux

I'm installing Arch Linux, but I have a problem with the installation of my display manager, lightdm. When I install and enable lightdm, I think the keyboard layout changes from Portuguese to US. ...
3
votes
1answer
8k views

Disable login screen on Ubuntu 15.04 (Vivid Vervet)

In 15.04 Vivid Vervet, how do I disable the login screen so that it drops me into a console right off the bat? Back on 14.04, I did this by uninstalling lightdm, but when I tried that on 15.04, the ...
3
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2answers
19k views

Lightdm user session settings on Ubuntu

Lightdm is displayed properly but after entering a password and clicking login, I see the screen blink and lightdm window re-appears and asks to log in as if nothing happened. Configs user@laptop:~$ ...
3
votes
1answer
7k views

ubuntu like lightdm in arch linux

I have just installed archlinux on a virtual machine and I managed to install lightdm by following the instructions given in https://wiki.archlinux.org/index.php/LightDM https://wiki.archlinux.org/...
3
votes
1answer
2k views

Can't connect to LDAP accounts with lightdm

I made a fresh install of Linux Mint 18.3 and then established a connection to my LDAP server. I can see the list of LDAP users with getent passwd. The strange thing is that, when I boot, the start up ...
3
votes
4answers
5k views

numlock on startup on linux mint 18.2

i updated my linux to the last version as Linux Mint 18.2 Sarah. after update my numlock is off. i changed mdm to lightdm. this method is not working.
3
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0answers
1k views

Synergy isn't working anymore after lock screen (LightDM)

I'm trying to get Synergy, which is a keyboard and mouse sharing tool, to autostart on a second desktop. I'm using the distro BunsenLabs which is based on Debian Jessie on both desktops, and so I have ...
3
votes
1answer
846 views

Lightdm Won't Start in Test Mode With OpenRC

I have a funtoo installation and I recently did sudo emerge x11-misc/lightdm which appeared to work fine, but attempting to start lightdm in test mode with sudo lightdm --test-mode gives this: ** (...
3
votes
0answers
317 views

KDE / LightDM - disable multiple users being logged in / 'switch user'

How can I disable the 'switch user' function in the kde start menu, so that only one user can be logged in at the same time?
3
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0answers
5k views

Autologin question with LightDM & Ubuntu 14.04

I have set up a batch of workstations at a library using DRBL. These workstations are running Ubuntu 14.04. I want these workstations to autologin to a specific user (a different one for each ...
3
votes
1answer
2k views

Cannot change default display manager on Mint 19 Beta

On Linux Mint 18.3, when I used to install mdm, the command sudo apt install mdm would open a prompt such as: and I would choose the default display manager. Running sudo dpkg-reconfigure mdm would ...
2
votes
1answer
615 views

override session for a user (without user list)

I have a machine that will be shared among few users and me. The other users come from Windows environment; I think Xfce is great for them but for myself, I always want to use i3. So the behavior I'...
2
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1answer
555 views

Disable beeping in lightdm

When typing backspace in an empty password box in lightdm, noisy beep sound comes out. Is there a way to mute this beeping?
2
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1answer
941 views

XFCE/LightDM: Tearing-Fix vs. No Desktop After Logging in

I have Manjaro/XFCE/LightDM and a GeForce GT 710 and I followed this guide to get rid of tearing. I added those three lines to my X-configuration. After I log in in the greeter the screen only shows ...
2
votes
1answer
536 views

LightDM screen lock in awesome-wm unlocks by itself

I use LightDM with awesome-wm. To lock screen I use command dm-tool lock. Most of the time it works fine but if after issuing the session lock command I switch to another tty and then go back, ...
2
votes
1answer
3k views

On a machine with multiple Desktop Environments set, how is the default DE configured?

I am provisioning systems with multiple Desktop Environments (Ubuntu 14.04, with Unity and Xfce). I want to change the default DE to Xfce from a non-interactive script (for autologin with lightdm). ...
2
votes
1answer
445 views

Who started xterm in my debian xterm+lightdm kiosk system?

I have stripped my full desktop debian 7 x64 to the bare, leaving just xorg and lightdm for a kiosk application. I have changed the lighdm configuration to auto-login a user. When I boot, this works ...
2
votes
1answer
1k views

Display dialog from pam_exec environment at login?

I'm using pam_exec to do some root tasks. They take some time, and I'd like to tell the user to wait a moment. I'm doing the tasks there, and not later, because I need: Root permissions To rsync the ...
2
votes
1answer
401 views

X11 ignores preferred mode

Problem I'm transitioning the configuration of my multihead monitors from using some rather ugly scripts to /etc/X11/xorg.conf.d/10-monitor.conf. My layout has two monitors of 1920x1200, one rotated ...
2
votes
1answer
161 views

Prevent lightdm from turning off screen when locking session

I am running Xubuntu 18.04. When I lock the session, the screen gets turned off instantly. I am using stock lightdm as display manager and lightlocker for locking the session. From my viewpoint the ...
2
votes
0answers
12 views

Lightdm multiseat problem on debian

I have a problem with multiseat and lightdm, problem is somehow with systemd and dbus, but if I have all setup correctly and setup dbus with allow setting for everything, I always get permission ...
2
votes
0answers
134 views

Pam.d three files lightdm, lightdm-greater, lightdm-auth

What are the differences in the three files located in /etc/pam.d /etc/pam.d/lightdm-greeter /etc/pam.d/lightdm-auth /etc/pam.d/lightdm I assume they each serve a different role, what do they do?
2
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1answer
295 views

lightdm does not show users which have no shadow password

I have switched my virtual machine, to use a ldap server for authentication with sssd. I assumed with this setup I will not need to use local passwords anymore, as i can login with ldap authentication....