Questions tagged [lightdm]

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

82 questions with no upvoted or accepted answers
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777 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+...
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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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“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. ...
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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
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1answer
843 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: ** (...
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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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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
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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
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1answer
150 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
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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
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0answers
131 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
289 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....
2
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0answers
530 views

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 ...
2
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0answers
351 views

Switch-User is not functional on lightdm

On lightdm pressing the Switch User button does nothing. dm-tool switch-to-greeter switches to the greeter, but does not seem to lock my current account. Is there any way to fix this, or even to debug ...
2
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0answers
3k views

Ubuntu 16.04 running on low graphics mode

A problem with my computer graphics mode. Before the low graphics problem , whenever I entering into GUI I see an error as " app armor intialization : LSB " which goes off in seconds and then I will ...
2
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0answers
794 views

How can I debug a custom LightDM greeter?

I am trying to create my own theme for LightDM greeter, concretely GTK's. I have compiled and installed the tarball, but any time I run lightdm-gtk-greeter I get this message: ** (lightdm-gtk-greeter:...
2
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0answers
867 views

LightDM says “Password Incorrect” sometime while it isn't

Sometimes I can't login with LightDM (with it's GTK greeter), because it says "Password Incorrect", while I've typed correctly. When that happens, I need to login at TTY1 and restart the LightDM ...
2
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0answers
2k views

Lock on suspend with LightDM

I was reading the Arch Wiki on how to start a screen locker when suspend, but I can't get work light-locker for LightDM from my suspend@kevin.service looks like this: [Unit] Description=Screen Locker ...
2
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1answer
787 views

Linux Mint won't bot to GUI automatically

Okay, I am out of ideas. There was a power failure during an upgrade, and now the system boots to the terminal, tty1, and the GUI does not load automatically. I have lightdm as my login manager. I can ...
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0answers
1k views

kernel: bcm2708_fb soc:fb: Unknown ioctl 0x40187a22

I have a Raspberry Pi running Raspbian. Towards the end of the startup log, I see this error. I believe it has been there a while, and I'm not sure what it may imply. kernel: bcm2708_fb soc:fb: ...
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0answers
2k views

Lightdm does not start after using webkit greeter

I am using lightdm. And I compiled the lightdm-webkit-greeter from source. Here are my /etc/lightdmlightdm.conf settings: [LightDM] [SeatDefaults] xserver-allow-tcp=false greeter-session=lightdm-...
2
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1answer
3k views

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 ...
2
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0answers
5k views

lightdm doesn't work after installing lightdm-unity-greeter on arch

I was using lightdm with the lightdm-gtk-greeter just fine, however I tried to install the unity greeter and now it shows me a black screen with a blinking cursor (I have to ctr+alt+1 and login ...
2
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1answer
384 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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2answers
3k views

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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0answers
14 views

(Ubuntu 16.04 Server) systemd update lightdm.service from ansible

I am making an ansible script to add an extra service (VPN/Strongswan) to be loaded to lightdm.service before booting to graphical.target / graphical GUI. I am adding "strongswan.service" to the end ...
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0answers
29 views

Lightdm won't start on Fedora

I am using Fedora 31 testing release, downloaded from this site: 北京在线数据服务 Capital Online Date Service Mirrors and successfully installed a server(It may not be online) with the Fedora-Server-netinst-...
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37 views

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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0answers
667 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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0answers
297 views

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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405 views

Debian: transition from plymouth to lightdm without console text at boot time

I am using plymouth for boot splash and lightdm as display manager on a Debian 9 (stretch) box. My aim is to have a smooth graphical transition from plymouth to lightdm with no console text in between....
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442 views

Debian stuck in login loop and constantly crashing when trying to start lightdm after upgrade

My problem seems to be quite specific. I couldn't find a case that seemed similar enough so if You guys find one I'd be glad if you could point me to it or give me instructions on what things I could ...
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0answers
324 views

Black screen after upgrade to fedora 26

I upgraded my system from Fedora 25 to 26, and after upgrading it rebooted and I got a black screen with a mouse pointer in middle but no GUI to make a login. There is an error on booting which says ...
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0answers
912 views

Lightdm GTK greeter with secondary monitor on the left

I am trying to configure the lightdm GTK greeter for a dual-monitor setup, where the secondary monitor is placed on left. I followed this part of a guide that suggests using the display-setup-script ...
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0answers
138 views

Disabling Save for Session & Save to Keyring by LXDE way

I am using minimal debian(jessie) with lxde-common installed for UI application view. This is in continuation of my previous question added littel bit clarity on my requirement. My previous question ...
1
vote
1answer
297 views

How to remove malfunctioning desktop manager from Arch Linux

I have accidentally installed LightDM as my desktop manager on my Arch Linux virtual machine and now the virtual machine won't boot; it just gives the following output: [FAILED] Failed to start light ...
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0answers
606 views

Lightdm showing greeter at external monitor

A few days ago I decided I wanted to install Antergos on my laptop. I downloaded the latest ISO file and installed it. I installed the nvidia drivers and got it to work. I used the following command: ...
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0answers
582 views

Lightdm display-setup-script with if-else-construct

To configure my displays for lightdm, I use the display-setup-script option in /etc/lightdm/lightdm.conf If I point it to an actual script if xrandr | grep -q "HDMI-1 connected"; then xrandr --...
1
vote
1answer
189 views

Moving cursor to edge of screen results in GNOME “carpet” border

I'm not sure I can accurately describe what's happening to my screen here, but here is a screenshot: Essentially, what is happening is that when I move my cursor to the edge of the screen, the main ...
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0answers
183 views

Cannot start X servers on different display tabs

I'm very new to customizing my Desktop with Ubuntu, but I'm trying to get some video games to work. I'm using 16.04 with Nvidia and after a lot of headaches with frame rates and not being able to ...
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0answers
374 views

After enabling apparmor Lightdm does not login automatically

I am trying to enable apparmor for Linux system (Debian 8). After Enabling i notice that my lightdm does not start. If i enable complain mode in apparmor for lightdm. it works . Posting logs for both ...
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0answers
2k views

Lightdm greeter: Not running inside a display manager, XDG_SEAT_PATH not defined

I am trying to use lightdm-webkit2-greeter under xfce. When I run dm-tool lock, I get Not running inside a display manager, XDG_SEAT_PATH not defined. When I run dm-tool list-seats, I get Unable to ...
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0answers
39 views

Killing a secondary Xorg stops display manager

My computer runs on Debian Stretch. For testing GUI applications purpose, I'm using a second instance of Xorg on display :X (X != 0). After upgrading from jessie to stretch. Killing the secondary Xorg ...
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0answers
321 views

Trigger a GTK application from CHROOT during LightDM startup

I am trying run a GTK application with chrooted environment. Mentioned are the lightdm settings which I have set. System configuration: OS : Debian 8 chroot FS: Debian 6 Windows manager : LXDE ...
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2answers
1k views

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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0answers
470 views

multiseat, is it possible to access virtual terminals on any seat?

My current multiseat config works fine, except for one thing : I cant access virtual terminal on either seat. I think it comes from the fact I launch X through my DM (LightDM) with the -sharevts ...
1
vote
1answer
376 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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0answers
18 views

Xorg server freezes and I must restart lightdm - any way to recover without closing all applications?

I use Arch Linux with the 5.2.5 stock kernel, Cinnamon 4.2.3, LightDM 1.30.0 and Mesa 19.1.3. My GPU is a Radeon RX 550 2GB. Sometimes, my desktop freezes as if there's a problem with the GPU or the ...
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0answers
15 views

how does lightdm invoke xfce4?

Am playing around with EndeavourOS (Arch + lightdm, xfce4) and I have worked out that :- boot loader loads the kernel which in turn starts init as root, which is a symlink to systemd systedm starts ...
0
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1answer
29 views

I decided to test lightdm and suddenly got a lot of new software that I dont want in my dash…How to remove them?

I installed lightdm to take a look,but I didnt like it...so just removed.But now I have a lot of new stuff(apps) on my gnome dash that I dont want,like "clipter","users and groups","xarchiver",etc,etc....