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

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Guest account works, but regular account does not

My System is Samsung R580 and I am having a problem logging in to Ubuntu 14.04.02 LTS. Yesterday, I ran sudo apt-get update and apt-get upgrade, and have not been able to log into my admin account ...
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1answer
16 views

How do I install ChominumOS and run it as a seperate X Session?

I'm exploring different options on how to install ChromniumOS on my desktop (x86_64) PC which is currently running Ubuntu 14.10. I tried the following methods first: Duel Booting the two, but ...
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1answer
33 views

ubuntu 14.04 login loop problem

My Ubuntu 14.04 is stuck, when trying to login my desktop. Means the screen gets black and soon after that the login screen comes back. I followed all steps in Ubuntu gets stuck in a Login Loop Even ...
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1answer
17 views

Image Viewer (eog) causes lightdm to restart

When I open an image and without zooming, try to drag to any border (which is ofcourse, by mistake), eog closes and a black screen appears that says lightdm is starting, and lands me in login screen. ...
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73 views

ubuntu 14.10 - lightdm can't start unity. Bad xorg config?

When I try to login with lightdm my monitors go dark and then switch off before taking me back to the lightdm login screen. I get a message telling me: Could not switch to the monitor configuration ...
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26 views

Starting Lightdm display manager: [FAIL]

How do i solve this? It maybe related to my previous problems: Booting to black screen ubuntu 14.04.2 System Settings Missing/Bluetooth Settings/Sound Settings/Programs Missing?
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16 views

How can I login into a domain user account or login as other user in Kubuntu?

I do have a kubuntu box connected to our Windows AD DC, and now i want to login one domain user in my AD to my kubuntu box but I cannot find a way to log as other user in the login screen. I tried to ...
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12 views

lightdm: lock session after (only) auto-login

I'd like to be able to have my KDE session started with lightdm auto login but lock immediately. But if I logout and then back in, I don't want the lock. I found this bug: ...
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14 views

How do I troubleshoot a hang at login?

When I try to login with lightdm it hangs on a blank background. I've tried the documented fix of: apt-get install --reinstall ubuntu-desktop apt-get install --reinstall unity Followed by a ...
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1answer
41 views

Stuck at login screen

I have Dell Inspiron 1525 with Kubuntu 14.04. One fine day I can't login and stuck at login screen. So I started searching here and there nothing helped. But one article has given me idea of creating ...
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1answer
39 views

Problem With Custom Unity-Greeter background

So I have this cool background I like. I set it as my background, but in Unity-Greeter, (Not the lock screen) I just see the default "bruised" wallpaper for 14.04. Ick. Does anyone know how to make my ...
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43 views

Black and white screen after “successful” LightDM login screen rotation in Ubuntu Mate 14.04

I have rotated LightDM login screen as suggested by Stephen and got black and white greeter (see photo). Sometimes the problem disappears after login, but occasionally it remains on session. I am ...
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15 views

GDM and LightDM running at the same

I have a fresh install of Ubuntu 14.04 LTS. I have installed some GTK-related packages and GNOME but I am not using GNOME neither as my window manager, nor I want to use it as my display manager. I ...
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1answer
64 views

lightdm won't start — “failed to use bus name org.FreeDesktop.DisplayManager”

So I want to stop lightdm. I log out, go to terminal, and type in sudo lightdm stop And my screen goes back to the login screen briefly before going to an empty terminal with just the cursor ...
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70 views

Install LDAP on ubuntu 14.04

I'm trying to configure OpenLDAP on Ubuntu Server 14.04 LTS and Clients (Ubuntu 14.04 and/or Linux Mint 17). It works with su command, ssh or in terminal but it doesn't work on login screen. Just ...
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57 views

Ubuntu 14.04 Pantheon session not shown in LightDM

I installed elementary-desktop on my Ubuntu 14.04 x64 virtual machine following these steps, but I don't get the Pantheon session in LightDM. I only have KDE Plasma Workspace and Ubuntu(Default). Is ...
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2answers
33 views

How to shutdown the computer after Xsession ends?

I'm making a computer like an arcade machine with an academic game. I'm using Xsession to replace the desktop by an application. It's working fine. But when I go out from the game it returns to the ...
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30 views

How to change onboard settings in lightdm?

How do I change the onboard settings for lightdm? I have a tablet with ubuntu on it. It was pretty easy to set up the onboard keyboard to show up in lightdm.... except I really don't like the way it ...
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20 views

Help! Cannot login Ubuntu after removing Gnome?

I am using Ubuntu 14.04. I installed Gnome desktop but I didn't like it. So I removed it. After rebooting, I cannot login my default Ubuntu GUI. It just freezes. I also realized that the Ubuntu logo ...
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67 views

Ubuntu 14.04 login loop - Guest sessions does not work either

I have been using Ubuntu 14.04 soon after it is released. Today I messed something up with the Chinese input ibus, and I don't know if this is the reason at all, but when I reboot using sudo shutdown ...
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41 views

Nomachine headless connection and dummy display

Sorry for the in-code-tags links, but this is my first post here. I am trying to use windows 7 to connect to a machine running ubuntu 14.04. I installed NoMachine according to: ...
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1answer
42 views

Installing Ubuntu 14.04: GUI goes crazy

So when I try to install Ubuntu on my workstation from USB and the GUI finally pops up either from try Ubuntu or install Ubuntu the windows just go nuts, they are different colors, scrambled and ...
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72 views

Qnix monitor, xorg.conf, and lightdm question

I am trying to install my Korean Qnix qx2710 monitor. From what I'm getting, I need to create a custom xorg.conf file with a modeline generated by cvt in order to get the NVidia driver to recognize ...
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1answer
74 views

Ubuntu 14.04 desktop does not load after login

I have a Asus Notebook (X450L) with Ubuntu 14.04, it has a nvidia card 720m and a Intel HD Video onboard. All working just fine until yesterday, when I updated the system. Now, after the login ...
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How could hide a user from log in screen? /etc/lightdm/user.conf doesn't work!

I created a user from this command useradd -M -N -g sambashare share And i want to hide it from log in screen, and i followed How do I hide a particular user from the LightDM login screen?. ...
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How to bring back the user in log in screen?

Yesterday, i've tried to change my user to root, so i edit /etc/passwd and change its uid and gid to 0. But i found some problem, so i bring its uid and gid back to its original one (which is 1000) ...
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23 views

How to change lightdm background?

I want to change background image of login screen in unity Ubuntu 14.04. I already read another answers on askubuntu and also downloaded Ubuntu Tweak. What actually happens? When I change the ...
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19 views

lightdm doesn't update wallpaper

I have installed Xfce4, so I can choose Unity or Xfce from Lightdm login screen when Ubuntu starts. I have choose Xfce4 and later after next reboot I have switched back to Unity but now Lightdm still ...
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1answer
27 views

cannot interact with gnome

I am running Linux 14.04 with Gnome. My Laptop just spontaneously lost all ability to interact with gnome - no toolbar at the top, no icons on the left, work space switching does not work, and no ...
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1answer
56 views

Changing login screen wallpaper to work with jpg. ubuntu 14.10

so. I would like to know how can I set login screen (lightdm) with jpg. because. it just work with png. I had to convert my images. so of 582mb => 1.8gb -.-'.
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116 views

Ubuntu 14.10 routinely freezes after upgrade from 14.04

My Ubuntu 14.10 installation has been freezing repeatedly since my upgrade from 14.04. I am able to "break" the freeze by dropping to TTY1 with CTRL+ALT+F1 and then returning to Unity with ...
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why WindowMaker is not starting via lightdm/gdm/kdm/etc.?

Since long time i use WindowMaker window manager (for nostalgic and performance reasons! ), but recently i got struggled on starting it via lightdm (Ubuntu’s default?),gdm, kdm, etc. When i try, it ...
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How to install kde-plasma with lightdm instead of kdm

I like lightdm and especially its webkit-greeter a lot. Is there a way to install kde without installing kdm and using lightdm instead? I have tried everything from installing kdm and then remove it ...
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1answer
111 views

How to reduce GPU fan speed after boot?

Every time I boot my computer, the GPU fan is at max speed and very noisy. The problem: Fan speed stays at maximum level: when I start the computer without screen or keyboard when I use the ...
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Two step verification in linux login

I am using this to enable google authenticator for two step verification. According to this method we set google authenticator module in lightdm. If user don't login with lightdm and use tty this ...
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30 views

Issues with LightDM

Ok, just put Ubuntu Trusty (14.04) on one of the two hard drives on my laptop. Was working great, except Windows 8.1 won't fully boot now. I'll post a different question on that. So now when I boot ...
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Have lightdm installed but no switching icon on login screen

I can't get to my Mate desktop. I installed libmate-desktop-2.17, mate-desktop, and mate-desktop-common (all show up with green box in synaptic package installer). I also installed lightdm. I ...
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1answer
140 views

Unable to Install NVIDIA Driver

So I am trying to install the NVIDIA GPU Driver Version 346.35 (http://www.geforce.com/drivers/results/81252) for my GTX 970 and am running into a lot of issues. I have tried to run the file and get ...
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40 views

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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1answer
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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
54 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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2answers
34 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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0answers
44 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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1answer
21 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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25 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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15 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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36 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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2answers
98 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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42 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 ...