LightDM (Lightweight Display Manager) is a Display Manager for the X.org X server.

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Desktop Environments Incorrect After SLiM Install

I am working on making an automated install based off of Lubuntu using Debian Installer so that the install is as automated as possible (a few inputs at the very beginning). So far I am mostly pleased ...
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12 views

Why does lightdm-gtk-greeter not depend on lightdm?

I had assumed that I would also get lightdm installed when I installed the package lightdm-gtk-greeter, but that was not the case. Looking up the package info it was clear that there was no dependency ...
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After Login, login background remains. Shows /usr/bin/startkde“ X session — ”/usr/bin/startkde" not found

I want my normal Ubuntu environment back. I am describing the series of modifications I have done. Because it may help understanding the problem. [modification 1] I had installed a "theme" that ...
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1answer
36 views

How do I reboot login screen?

After locking Ubuntu 14.04 and invoking login screen sometimes I get the page with disabled password field. How can I restart login screen in command line without restarting whole X server?
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22 views

How to restart UI in 12.04 desktop

Happy user of 12.04 desktop since its released, but recently - past couple of months my UI randomly freezes. Mouse pointer moves, but can not click Keyboard is completely gone Screen painting looks ...
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24 views

How can I start a LightDM session via SSH?

I'm connected to an Ubuntu 14.04 machine via SSH and I want to start the lightdm session for testing purposes. I don't want to forward the X server to my local machine. I just want to start the ...
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8 views

LightDM login Background Sync with Nitrogen

I use nitrogen to control my background in openbox. Is there a way to sync this with LightDM login so that I have the same background on the log in screen as on openbox?
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16 views

Cannot login after lock

When trying to login again after locking my computer, I sometimes can no longer login using the graphical interface. My username does show up, but I the bar where you'd usually fill in your password ...
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14 views

Need help logging in at greeter using a wireless remote/device

I'm running Tahr (Desktop) on a Brix S as a small pseudo server/HTPC (mainly to save costs and space). The box sits under my TV and I'm trying to set it up so that my wife and I can control the box ...
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18 views

Why double loading of lightdm in Ubuntu 14.10

I just install a fresh copy of Ubuntu 14.10 on my new Lenovo ThinkPad Helix, I notice right from the start a double loading of lightdm, I mean, it shows for few milliseconds and looks like it's ...
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52 views

Can not log in to Desktop, but terminal works, Ubuntu 14.10

Yesterday I did aptitude upgrade and today when I enter my credentials I'm taken back to login screen, I can start my session by log in to console, and starting Xserver and unity manually. I searched ...
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17 views

Ubuntu login fail to start lightdm session

I have a nightmare with my Ubuntu account login. Everytime after I typed my account password, the screen flashes and then back to login view. However,I can login in terminal via Ctrl+Alt+F1. then ...
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45 views

How can I add a custom python indicator to the unity-greeter login screen?

I've installed a custom indicator called PRIME Indicator and it shows up in the top panel (next to date time etc) after I login. I would like to show the indicator before login on the unity-greeter ...
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44 views

Cannot unlock session if user has no password

I created an account with no password for my 3 years old child. After some time of inaction on that account, the session locks. Then I cannot unlock the session. Trying to unlock with an empty ...
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1answer
56 views

Changing window manager in LightDM

I'm using Ubuntu 14.04 and wanted to change the default Unity/Compiz window manager. I've went through the LightDM documentation and saw a related question, but I still can't make it work (I tried to ...
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10 views

Boot-repair issue with Ubuntu 14.04

My VPS works absolutely fine but has had a few issues with booting since I upgraded it to Ubuntu 14.04 from 12.04. It will not boot after being switched off. So I Googled the problem and it looked ...
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38 views

Changing X display manager

On my Ubuntu 14.04 there's gdm and lightdm installed. Is it recommended to have both installed? How can I check which one's active and how can I change them? I have some troubles with the Ubuntu ...
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121 views

LightDM: user-session doesn't work, nor do multiple sessions at start

On my media center (XUbuntu 14.10), I am trying to autostart Kodi in the focussed session and also start and autologin xfce4 in a second unfocussed session (I hope Steam In-Home Streaming doesn't need ...
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49 views

VNC over lightdm results in blank screen

I'm trying to set up VNC over lightdm so multiple users may log in to the server and have their own session each. I'm using TightVNC Viewer from a Windows machine to connect to the Ubuntu virtual ...
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38 views

Changes in /etc/lightdm.conf.d/*conf or /etc/lightdm.conf makes any difference

I am trying to make my lightdm use a correct setup of my displays both for login and session. I have most likely misunderstood something here, but by reading the wiki I did the following: I have ...
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26 views

cannot lock screen, create a new user or switch users in unity

I tried lubuntu-desktop once as an alternative desktop environment alongside unity and then removed it, however from then on I have to login twice and any new users created fail to login, the lock ...
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1answer
95 views

configure lightdm greeter in ubuntu 14.04

Earlier I was using the [not ugly] old styled login screen. Recently have installed lightdm greeter to change my login box position from left to center. Now, I have to configure lightdm to disable ...
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unsquashing a liveUSB, I found that the filesystem is not identical to the one loaded from liveUSB

so I have ubuntu studio 64 in a live USB and I wanted to change the way it boots. Namely, the liveUSB boots directly to a live user session bypassing lightDM. I want to change that and as I figured ...
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37 views

how can i boot to normal user on live USB

I installed ubuntustudio 64bit 14.04 on a usb stick. The aim is to use it as a normally installed session but with the added benefit of keeping all my OS in a usb and using any pc available. This ...
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1answer
53 views

Problems with login screen kubuntu, lightdm

Recently, I installed xfce on my kubuntu pc, when I got tired of it, I uninstalled it. Here is where my problem appears, the login screen doesn't get back to normal kde login screen, it becomes a ...
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22 views

Program with xserver +lightdm not working

I have installed xserver-org and lightdm on Ubuntu 14.04 server. I then created a desktop entry to run a program such as Firefox once I login. A couple of issues I'm having. My machine is headless ...
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40 views

Change Display Managers Without Input

so I am working on a project which will be a Lubuntu install without touching anything during the install process (except after a few seconds of quick input), and I want to uninstall lightdm and ...
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165 views

GUI login problems in Ubuntu 14.04LTS

my problem is very similar to that presented here: Ubuntu gets stuck in a Login Loop I am using Ubuntu 14.04 LTS. I can enter my account in GUI just for 1-2 seconds after that I am returned back to ...
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25 views

Warm boot vs cold boot: How to compare logs when I can't log in for one?

I have a question that is tied to a previous issue and looking specifically for how to troubleshoot: LightDM won't start after Grub - Cannot Access TTY unless closing and re-opening lid I have ...
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32 views

Chrubuntu 12.04 Desktop Won't Load

I'm on a Lenovo X131e Chromebook. Upon start up I am able to move the mouse pointer around a black screen with a blinking text cursor in the top corner. If I switch to a terminal and then try to ...
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2answers
63 views

How to change Ubuntu login screen background without dconf-editor?

I am trying to change the Ubuntu login background which should be the same as the wallpaper, without installing dconf-editor or additional software. Is is possible?
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98 views

Ubuntu 14.04 stuck in login after upgrade

After upgrading from 12.04 to 14.04, I'm not able to login anymore (guest account doesn't work too); there's a loop (it goes back to the login). What should I do? I've already read Ubuntu gets stuck ...
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55 views

Ubuntu 12.04 in login loop as lightdm-session says upstart not found

I tried to install a package systemd (this replaces upstart in Utopic 14.10 and up). See my yesterday question How to Re Generate All Gnome Schemas for Ubuntu 12.04. The result was that it didn't ...
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36 views

error opening display after lightdm stop

I'm trying to install CUDA and following these instructions. Eventually I get to a point where I need to run: sudo service lightdm stop At that point the GUI shuts down but instead of a terminal ...
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34 views

Xubuntu and Ubuntu's display managers coexisting

I'm running Ubuntu 14.04. I installed Xfce via the 'xubuntu-desktop' package to try it out. After a couple days I decided to get back to Unity so I removed it and several other packages it came with. ...
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20 views

LightDM does not ask for login password

I have an auto-logged in non-sudo user called "screen". I have a passwordless sudo but login-protected user called "support". I'm pretty sure this was working fine before, somehow maybe the latest ...
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38 views

When I turn my monitor on after it has been off, it does not display anything

I am running Xubuntu 14.10 on a desktop and use LightDM. As I said in the title after I turn off my monitor (with the computer already on) and then turn it back on again there is no input from my ...
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58 views

14.04 : Cinnamon goes straight to Fallback on Nvidia card after reboot

A couple of days ago I did an update on my machine. apt-get update After the update proceeded I rebooted the machine and tried to log into cinnamon. Straight after the login I get a message saying ...
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83 views

Xubuntu 12.04 desktop won't start

My computer started hanging on the greeter screen. I cannot start a local X session, but can still select rescue from GRUB and boot to a tty. In addition sshd and the xrdp server seem to work normally ...
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107 views

Kubuntu 14.10: after 12 Dec 2014 update X doesn't start

After the update X doesn't start complaining a not valid xorg.conf file As a workaround at every reboot I do: sudo rm /etc/X11/xorg.conf sudo startx I also opened this bug: ...
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66 views

Configure and run indicator-sysmonitor on boot at login prompt

I want to use indicator-sysmonitor to display an indicator showing that the network connection is up amongst other things immediately at boot on the lightdm login screen. I followed these steps to ...
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50 views

Can this error cause computer to reboot

There are 11 computers in my classroom. Yesterday they began to reboot randomly, all of them. I reinstalled Ubuntu and got this error everytime. Also, after reinstalling the rebooting continued. Can ...
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67 views

Unity - desktop has stopped working after Unwanted Nvidia display driver update

My computer has an Intel i3 processor and no other inbuilt GPU. However, the nvidia-* latest got installed on the computer during an update process. I used sudo apt-get remove nvidia-* to remove all ...
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28 views

How to change screen locker in KDE?

Recently I start using lightdm in pair with google authenticator for two-step authentication. All works fine, but default screen locker in KDE doesn't configured to use 2-step auth. So, I want to ...
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51 views

Lightdm-gtk-greeter centre image

I use lightdm with lightdm-gtk-greeter. Is it possible to modify the greeter so the login screen will centre a wallpaper image that is smaller than the screen? The image I use gets stretched to fill ...
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1answer
46 views

Cannot change GTK and icon after changing LightDM greeter

I changed my LightDM greeter and suddenly I cannot change my gtk or icon theme. The dconf settings are there, but the system is not responding to changes, nor are the themes being used by all ...
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16 views

How to get Plasma Next option in Login

I installed Plasma Next on Kubuntu 14.10 and chose lightdm. Upon restart I'm not getting option to chose KDE Plasma Workspace/Unity/Plasma Next as my Desktop Environment. It directly enters Unity. ...
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30 views

Errors with Encryption Keyring and X when Booting in Ubuntu 14.04

I am running Ubuntu 14.04 and I know all of my passwords, but I'm having trouble logging in and error messages I've Googled have not led me to a solution. When I came home the desktop on my laptop ...
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90 views

lightdm multiple virtual terminals single seat

LightDM configuration semantics for multiple seats seem to have changed in Ubuntu 14.10. More, it seems there has always been ambiguity regarding whether multiple seats necessarily means separate ...
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1answer
60 views

Unity has disappeared from lightdm after updating gnome-shell

This morning I ran sudo apt-get upgrade and it prompted me to update gnome-shell. I never really use the gnome desktop environment, but I figured I might as well keep it up-to-date. After restarting ...