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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16 views

Wrong screen resolution after logging in with Lightdm

I have an ArcoLinux installation that uses lightdm as the display manaager. I am running xmonad as my window manager, but it doesn't matter what desktop that I use, the behavior is the same. After ...
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19 views

Enable lightdm autologin using sed

I need to edit /etc/lightdm/lightdm.conf using sed inside specific section, uncomment and set value. This section is [Seat:*] and line is #autologin-user= I expect this change: Before: [LightDM] . . . ...
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Empty login screen with two monitors (lightdm)

I'm using Kali Linux 2020.4 with xfce4=4.16 and lightdm=1.26.0-7. I have two monitors setup: HDMI 1920x1080 (shows up as 2nd, HDMI1 in xrandr) and VGA 1366x768 (shows up as 1st, DP1 in xrandr), using ...
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Display managers not loading startup commands properly, even when running xinitrc as a session

When logging into any display manager some commands just won't load while others will, no matter where I put them. I originally thought it was a lightdm specific issue with how it sources the dotfiles,...
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How do I use dm-tool switch-to-user from outside of dm session?

I'm trying use dm-tool switch-to-user from outside of a session (I want to eventually call this from a systemd service) I've followed the instructions on the man page on setting the XDG_SEAT_PATH ...
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54 views

error bootmessages. PAM unable to load. PAM adding faulty module

So when booting my Mint 20.1 I always see a short error. With journalctl -bI can see the following suspecious logs Feb 16 15:28:43 username-home kernel: ACPI Error: Needed type [Reference], found [...
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41 views

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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136 views

lightdm: gkr-pam: no password is available for user - how to solve?

I know that this was also mentioned in Password for user is not asked anymore to a certain extent, however, the issue discussed there does not seem to unequivocally connected to this one. Changing ...
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24 views

Cinnamon not detecting nvidia package drivers arch

I have just come from Ubuntu so getting used to Arch at the moment. I have installed the cinnamon DE and lightdm. However whenever I boot into cinnamon I get a dialog telling me to check my drivers, ...
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Improper Xorg behavior after uninstalling lightdm from Debian Buster

My pc is a i686 personal pc running Debian Buster 10.7 with i3 window manager. Couple days back I uninstalled lightdm hopping to use my terminal tty1 as login manager and perform startx i3 from there ...
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78 views

LightDM is ignoring /etc/login.conf and ~/.login_conf

LightDM is ignoring /etc/login.conf and ~/.login_conf LightDM is ignoring anything defined /etc/login.conf. Even if I modify it and rebuild the database as instructed, LightDM still does not apply ...
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42 views

American megatrends logo is displayed between plymouth end and lightdm start

In order to create an home made kiosk system I installed Ubuntu 20.04 Server. I configured plymouth to display my custom theme and set up the auto login using LightDM. After the auto-login is complete ...
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63 views

Manjaro-i3 on Hyper-V: skip xorg login and 'unable to get connection to the message bus session' error

Using the instructions at https://wiki.archlinux.org/index.php/Hyper-V I have installed a Manjaro-i3 virtual machine on a Windows 10 Pro host. On booting, lightdm failed to start, which I fixed ...
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56 views

Ridiculously large amounts of RAM used (by lightdm)

Lately, my Arch setup is experiencing some problems. For one, a command Xorg :0 -seat seat0 -auth /run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch takes up about 25% of RAM (htop tells me this). ...
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130 views

Lightdm-gtk-greeter keeps looping while attempting to log in as non-root user

I am using Arch Linux with a virtual machine and have used i3-wm for a while. I decided to try out dwm, which I installed on the same system. I ran the command sudo startx to run dwm. It didn't work ...
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143 views

LightDM: how to distinguish users with the same name?

I am using LightDM with the Slick Greeter. In my system, I have two user accounts for myself. They have the same name, but different user names. I want to separate private and professional work. ...
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56 views

Mint Cinnamon shows login screen but not desktop

Yesterday I updated my computer using apt and walked away to let it run. I ended up being away from it for a few hours. When I got back I saw that it was done, so I closed the terminal and shut the ...
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245 views

Arch Linux Not Working After I Change Display Manager To Lightdm

So I thought about switching to LightDM. I switched by doing sudo systemctl disable sddm sudo systemctl enable lightdm Then I restarted arch linux and everything ran fine. But then I thought about ...
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I cannot access XFCE when launched via LightDM

As a personal project I decided to start building a Linux From Scratch (System V Edition, 9.1) on a virtual machine. Everything went out correctly until the moment of entering the system through ...
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1answer
40 views

No HDMI signal on TTY7 when running Buster + NVIDIA GT 640 + nouveau + 4K UHD

Symptom Upgrading from a WQHD ViewSonic display to a giant 4K UHD ViewSonic display yields a No Signal error (via HDMI) after my workstation successfully makes it through GRUB and Plymouth screens. ...
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Unable to use mouse and keyboard in Lightdm test mode

I have a Debian Buster as a VirtualBox guest, and when I run /usr/bin/lightdm --test-mode --debug I am unable to use both mouse and keyboard. (Ctrl+Shift does not help) it outputs: [+0.00s] DEBUG: ...
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Set certain desktop environment as default, and revert back to it after reboot

first of all, let me put a few things out of the way: I'm about to manage a few (semi-)public workstations with Linux Mint 20 that a lot of different people have access to. And you know people; they ...
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255 views

GNOME Desktop Environment Initialization Delay

Specs Display Manager: lightdm 1.30.0 Desktop Environment: gnome 3.36.3 Distro: Ubuntu 20.04 Focal Fossa Problem/Background Once I login, all I can see (for at least a minute) is the wallpaper and ...
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Multiple issues with LXDE/LightDM after upgrading to Debian 10

None of these issues happened on Debian 9, and they seem related, so I'm thinking that they may be caused by some single change or misconfiguration. Graphics drivers seem to be fine, as 2D and 3D ...
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108 views

Copying picture to /usr/share/backgrounds/ with a script [closed]

I'm trying to copy a picture which gets selected with another script to /usr/share/background/ so that I can use it with lightdm, but I can't get it to work. I tried the usual cp "$file" /...
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How to run script when switching to specific (already logged in) user

There's plenty of info out there on how to run a script at login (add it to .xprofile etc.), but I'm looking for a solution that will run a script/command not just at login but also every time a ...
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527 views

GDM does not start on boot

GDM does not start on boot: I'm having same problem I also read tis problem that you solved before, I tried that but got nothing. Please help me im stuck in try.
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204 views

cinnamon-screensaver on linux mint 20 xfce

I am using linux mint 20 xfce. I love cinnamon screensaver and installed it. But it does not work for me. How can I use it? Thanks.
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412 views

How to start user session (login user graphically) from CLI?

We can use loginctl in modern distributions with systemctl to control the user sessions, seats etc. E.g. with it is is trivial to logout users and works on all desktop environments. However, can I ...
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412 views

Deepin Linux: Failed to start light display manager

I'm getting stuck when starting my laptop. It always stops on a black screen: failed to start Light Display Manager See 'system.ctl status lightdm.service' for details I've tried to search any kind ...
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Why does xrandr pick a different DPI if called by lightdm?

I have a script which calls xrandr and specifies my screen layout: #!/bin/sh xrandr --output DVI-D-0 --off --output HDMI-0 --off --output DP-0 --off --output DP-1 --off --output DP-2 --mode 2560x1440 -...
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1answer
156 views

Debian 10: `startx` on console terminal via ssh produces error

As I understand it a "console terminal/user" is a user logged into a "console terminal" (CTRL+ALT+ {F1 to F7}) Heres a sequence of what I've done Boot local machine Login on login ...
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809 views

How can I change the resolution of the login screen?

I have Linux Mint 20 running on my laptop. I have a dual monitor setup connected by VGA. The laptop monitor is 1366x768 and the external one is 1360x768. I went through a lot of hoops to get the ...
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131 views

Mutt doesn't open my GPG passwords in DWM unless I start it from lightdm

I use Pass for my password management. I also use Xubuntu. In a nutshell: when I use xfce4 (xubuntu-session): both mbsync cronjob and sending emails with neomutt work without any problem. Everything ...
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817 views

LightDM refuses to start after an emergency reboot

One of my usual applications started to consume the CPU and my PC was frozen. I initiated a reboot with SysRq + R,E,I,S,U,B, like I do in such times. When the PC is booted, LightDM refused to start: ...
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8 views

Can't move cursor to top third part of the screen

Sometimes i cannot move the cursor to the top third part of the screen and i have to restart lightDM. This seems so strange and i don't even know where to start looking.
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742 views

Faulty modules in my display manager (?) Linux Mint 19.3

So I wanted to know what display manager is currently used on my newly installed Linux Mint... Surfed communities and found this command: $ systemctl status display-manager I found out that my ...
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2answers
552 views

How do I find out the display manager info on Fedora 32 Mate?

It's my first time to use Linux, Fedora and Mate environment. I want to change the default login screen (mainly the background), but I couldn't find the way to do it. I have done some research, and ...
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1answer
451 views

LightDM sometimes resumes with a blank display after suspend

I'm suspending my laptop very often, by manually calling pm-suspend command. Most of the times it works without problems. However, sometimes it resumes with a blank screen. Either a reboot or ...
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67 views

Fedora fails to start and lost shell access

Linux Dist: Fedora 31 Mate compiz. Dual boot with win10. (UEFI secure boot enabled). 1) While shutting down the system, an unusual errors showed up in the screen. So the problem started with Lightdm....
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691 views

User can't login in lightdm only root can

I've installed arch, and lighDM with awesome window manager. Everything runs okay.If I login as root, awesome load and works but if I login with the user I've created it attemps to log, clean te ...
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176 views

Linux Mint 19.2 freezes and crashes when playing videos online

Can't play any video from the internet, no youtube, dailymotion etc. Tried playing youtube videos through vlc, same result. Sometimes, mint just crashes and reboots and most of the times it gets stuck,...
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182 views

Why language change in lightdm-gtk-greeter is taken into account on second login?

I am using lightdm with Xfce and when I change language in the greater and login Xfce uses old setting. However, after logout and another login language is properly changed and Xfce uses intended ...
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36 views

Why don't my wtmp/utmp reset the user count?

On a normal working Linux machine the command w report 2 users(because 2 users are connected) w 19:23:19 up 1:53, 2 users, load average: 0,44, 0,63, 0,81 USER TTY FROM LOGIN@ ...
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139 views

Debian 10 auto login - lightdmcfg repo issue

I am following along with How to autologin in debian 10?. As the snip shows, this ends up pointing to a Ubuntu repo which my installation of Debian 10 fails to find. What's the fix for this? root@...
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1k views

How to restart Cinnamon after screen unlock

I have an issue with Cinnamon that manifests itself after a long idle period, when I use the computer after a few hours of idle, the CPU, memory, etc. all seem to be fine for Cinnamon, but every ...
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3k views

XUbuntu LightDM login loop

I am currently using Ubuntu 18.04.3 LTS, and I randomly got a login loop upon restarting my PC. The content of my /var/log/lightdm/lightdm.log is the following: Greeter connected version 1.27.0 api=1 ...
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7k views

How do I re-enable the lightdm.service?

At some point, in the past, I must have disabled lightdm service with: systemctl disable lightdm.service or something similar on my Debian with Cinnamon desktop. Unfortunately, I will now need it, ...
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23 views

Exit X using bash script

Well, I'm playing with a Raspberry pi 3 and due to hardware limitations I have to exit X to execute some emulators(using framebuffer), for example. I want to create a bash script to exit lightdm ...
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1answer
1k views

How can I get lightdm to start xmonad?

I've been running nixos with xmonad and using startx to start the xserver. However I decided I would like to have a greeter. I first tried sddm by disabling startx and enabling sddm services....