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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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 ...
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xscreensaver running on lightdm GTK greeter

This is a dorky question and the merits of it are pointless. I have a system for guests and I want a BSOD screensaver for the login. I've been fiddling around for a while with various attempts at ...
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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 ...
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lightdm and xfce - password prompt invisible after locking

just updated from LinuxMint 18.3 to 19.0, found a weird problem in locking and unlocking screen. Closing the laptop lid puts the computer to suspend, but when opening it, the password prompt for ...
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systemd-logind: `Image lacks .osrel section, refusing` in journalctl

Here's the output of journalctl -b -u systemd-logind.service -- Logs begin at Wed 2019-05-15 12:38:02 CEST, end at Sat 2019-06-08 18:04:57 CEST. -- Jun 08 17:04:33 ArchLinux systemd[1]: Starting ...
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LightDM - default user session does not seem to work

I need to choose which default window manager is choosen by LightDM at startup. I have edited /etc/lightdm/lightdm.conf: [SeatDefaults] user-session=i3 autologin-user=ibox It does not seem to work, ...
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Fixing a problem with lightdm; boot-loop

I think I messed up my Ubuntu 17.04 a little. In order to describe my problem I can only provide the symptoms + a suspicious log-file. My quenstion on this is: 1.: Can I repair it by doing something ...
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1answer
380 views

Debian login loop, can't login with correct password

I've updated my repositories on synabtics the upgraded firefox to newer version, when I open it it crashes, while this I was having my hard drive plugged .. so I tried to reboot to fix Firefox crash .....
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Keyboard layout on LightDm

I'm trying to configure the keyboard layout to azerty (french keyboard) in lightdm. My tty and my desktop are already in azerty. I have a /etc/X11/xorg.conf.d/20-keyboard.conf with : Section "...
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2answers
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Debian 9 DM won't load after dist-upgrade

I used to have Debian 8, and today I decided to upgrade to Debian 9. I did so by running: sed 's/jessie/stretch/g' /etc/apt/sources.list sudo apt-get update && sudo apt-get upgrade sudo apt-...
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Unable to wake up after locking screen

Just installed Xubuntu 19.04. When I try to lock my screen it does some weird and crashes. Screen turns off and I have to turn the system off manually. Tried xscreensaver and it works just fine, but I ...
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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. ...
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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....
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lightdm and ldap authentication: how to display connectivity issues

I use LightDM als my display manager, entering user credentials via its greeter login. The system's PAM authenticates against a LDAP server. Unfortunately, the network is unreliable hence the LDAP ...
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Arch - Gnome won't boot after disabling lightdm and enabling gdm

I was trying to find a way to lock my screen in Gnome, so I followed this forum, but when I rebooted Arch, I am stuck with a black screen and a cursor that doesn't move as shown here.
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lightdm service problem after video driver change, can't boot [Manjaro]

Manjaro Mate, latest updates all done and running ok (Latest LTS Kernel)... Dell Inspiron 15R 5537 Dual Graphics Intel 4400 / ATi Radeon HD 8850 Ok I was Unhappy with my graphics performance in ...
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Stuck in a login-loop in lightdm and gdm, but not with xfce and other systems

The interesting part is I found that I was able to login with xfce but not with either lightdm or gdm. (I am using Ubuntu 16.04)
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KDE and LightDM on ArchLinux

Is it possible to use LightDM with KDE on Archlinux? Wiki says Basically there are two ways of starting KDE. Using KDM or xinitrc. I use also awesome WM and XFCE, so I'd like to use LightDM ...
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Logged out when switching tty

I ugraded my Debian from Stretch to Buster. Now each time I switch the tty (by Ctrl-Alt-FX) from my graphical instance (F7) to something else (e.g. F1) and back, I have to login again. It seems that ...
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Debian 9 MATE start lightdm on system boot after disabling

Some many months ago I disabled the automatic start of lightdm. I can start from the commandline without issue but I want now to set it as the default again. What configuration file did I change?
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Change lightdm background

Seen similar question many times on AskUbuntu, but most answers was bout unity-helpers or gconf ...canonical... etc, so this actually doesn't seem to work. The problem is that I decided to move to ...
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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 ...
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Parrot OS: “Failed to start Light Display Manager”

i have recently installed Parrot OS on virtualBox, the installation was successful but as the system started booting, it stopped showing "Failed to start Light Display Manager". here is the systemctl ...
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How do I use ssh-agent as a wrapper program?

I'm trying to start awesome windows manager as a subprocess of ssh-agent. It worked when I used startx (ssh-agent startx). But now I'm trying to make it work under lightdm. lightdm starts /usr/bin/...
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Centos 7: Fails login with fluxbox and lightdm

On my Centos7 vm I have installed fluxbox and lightdm. But when I set the password correctly it still fails to login. Originally I had a the following .xinitrc: exec /usr/bin/startfluxbox But with ...
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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, ...
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Dual Boot Win10/Linux Mint hangs on boot, Light Display fails to load

Recently I had issues with my dual boot Linux Mint/Windows 10 instillation. It wouldn't boot. My computer would turn on and it said Error: Unknown Filesystem. Then put me at a Grub Recovery prompt. ...
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496 views

How to stop Gnome Keyring from asking for Login password, like it used to?

Previously, Gnome Keyring only asked for the Default Keyring password when I attempted to launch Chrome. I tried playing around with settings in Seahorse to see if there was a work around for this, ...
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1answer
341 views

Deepin White screen

I installed deepin on Arch (fresh install) and it just isn't working, I can't log in, when I start the lightdm.service, it just shows blank white screen. I haven't enable the service yet. I was just ...
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Error in io.elementary.greeter

I am using archlinux. When using io.elementary.greeter with lightdm the screen remained black. You can start the virtual terminal, but it will be returned to the black screen immediately. As I saw ...
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Linux kernal 4.19.0-kali1-amd64 Black screen error on sleep [duplicate]

I am facing this error after I have upgraded my Kali Linux to the latest version that is (4.19.0-kali1-amd64). uname -a 4.19.0-kali1-amd64 #1 SMP Debian 4.19.13-1kali1 (2019-01-03) x86_64 GNU/Linux ...
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How can I stop LightDM from crashing when unlocking if a DisplayPort monitor is disconnected?

I've an Intel NUC6i3SYH running Debian GNU/Linux with LightDM 1.26.0-3, LightDM GTK+ Greeter 2.0.6-1 and Light Locker 1.8.0-3. When I lock my session, disconnect the DisplayPort cable from my monitor ...
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1answer
171 views

.xsession exec not recognise $HOME or arguments?

The basic scenario is that I'm sharing my dot files across multiple machines and want to have my session definitons synced as well. Since I use different laptops and monitors with significantly ...
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125 views

Lightdm login messages

I'm using lightdm as display manager in Raspbian GNU/Linux 9 (stretch), and I'm missing the login info messages, like "incorrect password, try again". More precisely: upon boot or logout, if I ...
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1answer
271 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 : ...
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619 views

Lightdm fails to start xsession

I switched from xfce4 to i3 a while ago. The first go through, everything worked fine. I then had to reinstall i3 for some reason, and I can no longer enter i3 through lightdm-gtk-greeter. I have to ...
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1answer
331 views

How to change cursor size in LightDM+GTK

I am using the GTK greeter for LightDM but the cursor looks very tiny on my laptop's 1080 display. I have already set the DPI setting and some text looks big, but the center input is still small and ...
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1answer
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lightdm config damaged

I accidentally erased the plymouth package which removed many more packages. The system would still boot but the console hung. I added the packages lightdm and lightdm-gtk-greeter, and now I do get a ...
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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 ...
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1answer
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What does `lightdm --session-child 12 19` mean?

What does lightdm --session-child 12 19 mean in the following output? Why does lightdm fork a process to execute the above command? I don't find --session-child in lightdm manpage. Thanks. $ pstree ...
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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 ...
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0answers
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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?
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1answer
338 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 ...
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1answer
251 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....
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362 views

My Debian install gives me black screen on start up - it's a quick fix but it happens every time

My issue is a bit strange. I am running Debian GNU/Linux Testing Buster, and I'm very happy with it. However, it has one minor but persistent issue that I can't seem to figure out. Each and every time ...
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1answer
869 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 ...
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Do changes in live usb persist linux once installed?

Once installed I am unable to access wifi nor get graphics to work without nomodeset However booting from live-usb everything works perfectly. So I have enabled the nvidia-drivers during live cd in ...
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1answer
470 views

LightDM GTK+ greeter doesn't use the right cursor theme

I'm trying to define Suru++ as the cursor theme for LightDM GTK+ greeter on Debian stretch. This is supposedly done by adding Suru++ to the list of alternatives for x-cursor-theme, and choosing it as ...
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0answers
133 views

Change gdm to lightdm

I am following the instruction here to create a fake screen. However, I have gdm installed on my CentOS Linux server. Do you think I can still go with the instructions? Should I install lightdm? Will ...
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301 views

Lightdm fails to start after system update

I use Debian 9 with Xfce, amd64. After updating from 4.9.0-6 to 4.9.0-7 the lightdm service fails to start. lightdm.log complains about: Loading users from org.freedesktop.Accounts User /org/...