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

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After switching from gdm to lightdm my screen turns off when I come to the login

I tried to change my Display Manager from gdm to lightdm. After a system restart everything was normal until I got to the login place. Instead of seeing the login screen I only heard the sound of the ...
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107 views

Ubuntu 14.10 - Wrong greeter screen resolution

I'm currently running Ubuntu 14.10 set to a resolution of 1920 x 1080, but on start up of the system, the resolution is incorrectly set to 3840 x 2160 (with no scaling) at the greeter screen. On ...
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114 views

How do I set-up LightDM and gnome-session-flashback to use XDMCP?

I'm trying to create a terminal session on another computer in my local area network. I have used XDMCP in the past, but it's pretty long ago ('06 & '07). I remember it being a breeze to set-up ...
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1answer
38 views

What are the names of the icons that LightDM uses?

I'm currently trying (and failing) to make a system icon theme for the Ubuntu LightDM login screen. I really hate the default ubuntu-mono-dark icons, and would like to use my own set of icons. After ...
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80 views

Complication over VNC, lightdm and startx

I managed to run x11vnc server on my Ubuntu 14.04. I can log into my Ubuntu from my Windows PC using UltraVNC Viewer. The Ubuntu machine is headless. I followed instructions below. ...
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135 views

Cannot login on 14.10 GUI

So I booted up my laptop like normal and got to my login screen (unity) and once I logged in I was brought to my desktop with icons missing, then thrown back to the login screen. I tried changing my ...
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1answer
53 views

Ubuntu fonts are corrupted on certain windows

I'm running ubuntu 14.10 on a lenovo yoga pro 3. Specifically I followed the instructions detailed here during the istallation process: Yoga 3 Linux HOWTO When I login to Ubuntu sometimes the fonts ...
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3answers
79 views

How to hide administrator account or root in Login screen? [duplicate]

I used Ubuntu 12.04 and I want to only user account appear on the Login screen without guest and administrator account. My administrator account cannot view to everybody when their Login. ...
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20 views

How can I remove this discoloration from the lightdm-kde-greeter?

I am using Kubuntu 14.04.2 LTS. Recently (not sure since when but it certainly wasn't there at my earliest 14.04 install last year) my locker has started to display some discoloration in some parts. ...
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58 views

How does LightDM treat PAM?

I use XFCE as my desktop, and I wanna know how LightDM works with PAM. when I use normal kernel arguments, LightDM starts and then XFCE is started by LightDM. When I add "text" to kernel parameter, ...
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82 views

VMware tools crashing with root access in Ubuntu 14.04.2

I'm trying to enable graphical root login with commands on Ubuntu 14.04.2: sudo passwd root sudo sh -c 'echo "greeter-show-manual-login=true" >> /etc/lightdm/lightdm.conf' Portions of the ...
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136 views

How to customize login screen for Ubuntu 14.04.2 LTS

is there a way to customize the login screen for Ubuntu 14.04.2 LTS. I want to move my login area of Ubuntu 14.04.2 LTS from left side to the middle. After searching in the web i came across this ...
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109 views

How to run Remote Desktop at startup before logging in?

I've tried Google Remote Desktop first, and added this line to Startup Applications Preference /etc/init.d/chrome-remote-desktop start , but unfortunately this won't be executed before logging in ...
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323 views

/etc/X11/Xsession & LightDM

I'm running Lubuntu 14.10. It seems that LighDM invokes /etc/X11/Xsession only if directed to so by the user. In fact there is no shadow of it in lightdm-session wrapper. startx command line ...
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1answer
56 views

log in bounce back due to missing system file

I have stupidly uninstalled some system component. And after restart I can not login, every time I typed in the corrected username and password, the login page just bounce back. I am on ubuntu 14.04 ...
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178 views

Is sudo killall -u lightdm safe?

I realized that my server has many processes runned by lightdm: Can i killall processes from lightdm? Is sudo killall -u lightdm safe?
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128 views

lightdm using too much of CPU resources

I am using ubuntu 12.04. The lightdm is taking too much amount CPU constantly. I have tried restarting the system many times, but no use. Please help. lightdm version : 1.2.3 Thanks Saravanan
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79 views

Unable to replicate xsessions/ubuntu.desktop in Ubuntu desktop 14.04 (with xsession-errors)

I have been loosing quite a lot of hair over this one. I am trying to get a second x-session behaving exactly as the default one provided by ubuntu.desktop. So here is what I did: copied ...
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3answers
963 views

Login Loop - unable to run unity - not Xauthority ownership but may be related to display?

All, I was trying to get VNC working, making lots of changes that I don't recall now when I discovered after a restart that I could not login to Ubuntu 14.04. I believe I authenticate ok, but get ...
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2answers
73 views

No Desktop appear after logged in using lightdm Ubuntu 14.04

Guest Logged in working fine...But When i do logging with my user account..logged in gets successful but after logged in ..nothing appears on desktop except wallpaper of ubuntu. Facing this problem ...
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96 views

google chrome tearing with integrated intel graphics, but working with optirun

Whenever I run google-chrome, I get a lot of tearing issues. These are easy to notice, for example, when scrolling on facebook. The top bar, the one with the logo and the notifications button, tears ...
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51 views

my lubuntu gui can not login by my user and guest user

I can not login in the gui, it flash and back to login gui after I input password, this is in my /var/log/lightdm/x-0-greeter.log file: ** (lightdm-gtk-greeter:2893): WARNING **: Error retrieving ...
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72 views

How to disable a monitor at startup?

I am using a notebook with a broken screen, and a monitor. I was having this problem, and pressing the fn key coresponding to the monitors set up worked when logged in. Eventually I managed to fix ...
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65 views

How to restore the Unity greeter after installing and uninstalling xfce-desktop?

After installing the xfce-desktop package, the lightdm greeter runs instead of the unity one, even after uninstalling it. I've looked in every lightdm conf file, and greeter-session is unity-greeter. ...
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33 views

User no longer appears in greeter after UID change (14.04)

I've hunted around for solutions to this but to no avail. I've changed my UID to 501 in order to access files on a drive pulled from my old Mac (HFS+). Now I can access the drive with no problems, ...
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50 views

How do I select the keyboard layout when I log into my Kubuntu 14.04 machine?

I have a laptop with a German keyboard in it, so upon installation, I thought I would set that as the default layout of the system. But most of the time, I use an external keyboard with a dvorak ...
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1answer
164 views

How to change my onboard keyboard theme in lightdm gtk+

I'm running Xubuntu 14.04.02 and have created a custom Onboard keyboard theme, which works fine once I'm logged in. The problem is my greeter screen, when I launch Onboard it keeps the default theme ...
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142 views

Stuck at splash screen when changing to GDM

After considering it for a while, I finally decided to install GNOME onto my Ubuntu 14.04 system to give it a play and see if I it was worth switching to Ubuntu GNOME. Everything seems to be fine ...
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97 views

Login screen design / wallpaper does not work

I am using Ubuntu 14.04 but installed xubuntu-desktop afterwards. Now the login screen is very ugly: The theme is not applied and I cannot change the background picture (only black one shown) Only ...
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66 views

lightdm crash after changing resolution

my laptop is dual boot win8.1/ubuntu 14.04 lts two gpus: gtx980m/hd4600 I use nvidia-346.47 and bumblebee, following the configuration tutorial How to install nVidia drivers with Bumblebee on Ubuntu ...
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137 views

Ubuntu 14.10 system program problem detected after login and no desktop

I messed up with lightdm by CTRL+ALT +F1 and stopping it. Then tried to return by pressing CTRL+ALT +F7 switched to black screen. Then I tried everyting I saw on the web like reinstalling gdm, ...
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218 views

How to start lxsession from command line with proper user priviliges

I'm trying to achieve two things that I can not get to work because I don't know how to correctly start an lxsession in Lubuntu 14.04.2. I boot to the command line with the following line ...
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44 views

Unity is gone! And cannot get it back

Hello I have had a couple questions regarding my laptop and ubuntu. I managed to get the laptop working but now I think unity is gone (assuming that is what it's called) My question is different from ...
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22 views

How can I display a custom image when selecting a custom session in the greeter?

before I asked this question and found out how to run any program directly in place of a desktop environment. Now I'd like to know if it is possible to change the background image alongside the ...
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1answer
153 views

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
38 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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5answers
901 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
50 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 ...
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353 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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177 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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100 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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115 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
167 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
128 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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187 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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42 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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769 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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1k 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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294 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 ...