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

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How to assign one X Screen to one LightDM seat?

I'm trying to configure a multiseat setup on a desktop PC with two keyboards two mice two monitors attached to the same graphics card (Nvidia NVS 310) Using these instructions I managed to make ...
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Lightdm is broken when used ubuntu tweak to change the default background!

I have ubuntu 14.04 and I used the "change login screen background" and now, when I change my wallpaper, The wallpaper on the login screen dose not change and if I change it via ubuntu tweak, The ...
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How can I have my login screen use the same wallpaper as my desktop?

I use pcmanfm to display wallpapers on my desktop. The location of the conf file for pcmanfm is ~/.config/pcmanfm/lubuntu. In this file the wallpaper is simply set in this form: ...
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Ubuntu 14.04 - Lightdm and Unity optimal configuration

What I'm using: SonyVaio Vpcef2e1e (with 4GB RAM and Ati mobility radeon™ hd 4250) In the old days I never had issue with the graphics. I had to fight sometimes to add drivers to the graphic ...
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Is restarting lightdm likely to cause any serious problems?

I frequently mess things up and I have to restart the computer. Recently, I started restarting lightdm / gdm, as it is quicker. Is that a sensible thing to do? I use the following command (in tty): ...
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Do logins by the gdm (or lightdm) user in auth.log mean my system is breached?

Please look at this auth.log (from Ubuntu 14.04) I have provided and tell me who this gdm user is and why there are all these unauthenticated logins? I am freaked out; please help! Here's the ...
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18 views

Theme lightdm-gtk-greeter

There are a couple of question that deals with changing the icon theme / desktop theme of the lightdm-greeter. I wonder if it is possible to change other parameters of the greeter in order to be ...
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20 views

Ubuntu login screen

I have installed lxde desktop environment for my Ubuntu 14.04 and then afterwords I delete it. Then my old lightdm unity login screen changed to this one ...
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67 views

How to adjust DPI in 14.04

I asked about fixing DPI in 12.04. The 14.04 release notes list "Support for High-DPI screens and desktop scaling." Post upgrade, it seems that nothing has changed. Similar symptoms from my previous ...
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61 views

Lock screen does not display all users (ubuntu 14.04)

When I lock my screen using Ctrl+Alt+L, I am not able to see other users listed within the lock screen so I can switch instead. The lock screen shows only my name as an option for login, however I ...
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61 views

Ubuntu 14.04 update lightdm broken

I think the screenshot explains it better than I can. I'd like to post a helpful bug report on Launchpad, but how do I even explain this? This seems to have come on as a result of a failed update - ...
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112 views

How to get Pantheon Greeter on Ubuntu 14.04 instead of Lightdm

I'm running Ubuntu 14.04, how can I replace the lockscreen with the one on Elementary Luna (Pantheon-Greeter). Thank You!! Edit: Can anyone do it and confirm it works completely?
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28 views

Login screen freezed after resume

Today I came into strange problem. Yesterday, as always, I suspended my Ubuntu 14.04 (Unity) laptop for night. Today as I open it up it shows login screen (lightdm) but it is impossible to write ...
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2answers
53 views

Are desktop files stored in hard drive? [closed]

Hi I'm new to Ubuntu and I do not know much about this OS. The problem I am having is getting access to files on the desktop without booting the OS, I am currently running a 14.04_live according to ...
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11 views

Xhost disabled in Ubuntu 12.04 LTS

Trying to fix some issues with my graphic chip (intel HD4000) and lightdm about very frequent system hangs a while ago (several months), I somehow disabled xhost program, so everytime I log in my user ...
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26 views

Ubuntu 14.04 login goes back to login screen

When I login it again come back to login screen. I tried tty1 terminal to reconfigure lightdm but it does not connect to Internet. While connecting to Internet it shows the error message path ...
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17 views

Login Loop after fsck to Fix Not Booting (common fixes not working)

In the last month my Thinkpad X201 running 14.04 hasn't booted multiple times and drops into initramfs. Each time I had to use a live usb and fsck to fix errors, so it would run again. This usually ...
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8 views

Graphics and input settings load delay on boot

Whenever I boot my system, after loging in, it takes half a minute for my display settings and my input settings to load. This means that for the first 30 seconds I have the default resolution ...
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38 views

Black screen on bootup

I've had a problem since loading ubuntu alongside my windows install now. I'm running 14.04 and using Gnome 3.12 shell and Lightdm. When booting up the Ubuntu splash screen looks normal and pushes me ...
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45 views

How do I use lightdm for login instead of light-locker?

I installed xubuntu on my laptop and recently removed nearly all of the xfce4 packages in favor of a kde desktop. However, light-locker is still used for the login screen. How can i remove it and ...
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1answer
38 views

Unable to login after deleting Guest User Account

I was trying to tweak Ubuntu after fresh installation and following various links on web stating "Things to do after installing Ubuntu 14.04" I was trying to remove Guest User Account from the start ...
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75 views

How to configure a password for LightDM VNC connection

I have ubuntu 14.04, and am using lightdm. I want to login to the machine from another (windows) computer using VNC. By using the following /etc/lightdm/lightdm.conf I get a VNC server, but when I try ...
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Ubuntu 12.04 freezes when switching to lightdm

I was changing the theme in my Ubuntu 12.04 to Mac OS theme, constantly installing, logging in and out, rebooting when trying to fix things along the way. While I was doing a reboot, it froze, for the ...
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27 views

How can I make my display work again in Xubuntu?

I'm running Xubuntu 14.04 and I was testing some stuff because I have a dual display setup, and one display never wakes up from suspend. So I tried this, to see if the display would wake up: sudo ...
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21 views

How to enable second x session on tty8 in 14.04

how can I enable a second x session on tty8 in ubuntu 14.04? /etc/lightdm/lightdm.conf and [LightDM] seats=Seat:0, Seat:1 ... [Seat:0] user-session=ubuntu autologin-user= [Seat:1] ...
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85 views

LightDM login fails for LDAP users

When trying to log onto a Kubuntu 14.04 LTS system. I noticed that all users would pass, when logging in via ssh, but graphical login (i.e. LightDM with the KDE greeter) would just be possible for ...
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261 views

Ubuntu release upgrade from 13.10 to 14.04 fails - log-in fails

Upgrading Ubuntu To upgrade from Ubuntu 13.10. to 14.04. I ran sudo do-release-upgrade. The first attempt failed and I found the following message in the error log: ...
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60 views

No desktop after login?

So I just installed Ubuntu Minimal 64bit and when I login it just leaves me on what looks like a command page that says jerric@Jerric-HP:~$. I don't have Windows anymore, I think. What do I do? ...
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22 views

GNU-screen not working after startx

I recently uninstalled lightdm in favour of starting X from the command line, so that I could jump between different window managers without having to configure lightdm. Now I just type startx and the ...
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1answer
77 views

lightdm failed to start session; user folder requesting Gnome

We're migrating some old 10.10 users on Gnome to 14.04 using Unity. When they log on, however, the lightdm greeter complains "Failed to start session." /var/log/lightdm/lightdm.log notes: ...
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13 views

Where does lightdm change $PATH

I use lightdm on my Ubuntu 12.04 and I have the entry /usr/lib/lightdm/lightdm in my $PATH if I login through lightdm. Now I'm cleaning my $PATH and I simply want to know where this entry gets added. ...
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45 views

Unity greeter wallpaper missing

After following this guide, whenever I use a custom wallpaper (one that is not from the official wallpapers), the background of the login screen shows only purple instead of my wallpaper. However, if ...
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Black screen after booting Ubuntu 14.04 LTS [duplicate]

I'm new to Ubuntu 14.04. I changed some configuration and installed Gnome. I chose Display manager as GDM. After I restart, it boots but the login window does not appear. It shows a black screen ...
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63 views

fix “The system is running in low-graphics mode” error without internet

I'm very sorry for asking about this error in another question but all the solutions in here require for you to have internet. I only have wireless internet and when I am in that console the internet ...
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81 views

Login as domain user Ubuntu 14.04

I have installed PowerBroker aka Likewise-open on my Ubuntu 14.04 desktop. I successfully added the desktop to the domain but I am unable to login as a domain user at login screen. I found some ...
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1answer
42 views

How to detect the vga signals [closed]

I am currently working on Ubuntu 12.10. We have functionality as we have two cameras (say left and right cams) for recording the videos which creates two different streams as stream-1 and stream-2. ...
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14 views

Process 'leaking' from lightdm session

When I restart lightdm or log out and log back in, a process is left left running. A new logind session is opened, but the old one remains running: c68 - john (1000) Since: Mon 2014-07-14 ...
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1answer
454 views

12.04 After HWE upgrade and running Ubuntu Tweak to clean cruft, can't start lightdm

I did the HWE upgrade and that worked fine. System started fine. But I ran Ubuntu Tweak and it reported massive amounts of cruft. So I did the Janitor and uh-oh...system boots to command line ...
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72 views

Upgrade from 12.04lts to 14.04lts login loop

Kinda a newb but I upgraded from 12 to 14 when I did I changed my login password now when I try and login I get into a loop, if I do this I can login in "These suggested instructions apply to my case ...
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51 views

X Server config used by lightdm

What I want to do is to start a x server just like the lightdm did. But I can't get the X server perform just like the one started by lightdm. I see the X server process executed by lightdm is: root ...
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1answer
104 views

How to edit lightdm.conf file

I tried to activate numlock in the login screen using numlockx. The instruction point me to add this line greeter-setup-script=/usr/bin/numlockx on to this file /etc/init/lightdm.conf I tried ...
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1answer
143 views

Installing Gnome 3, should I use gdm or lightdm?

I'm currently using Xubuntu 14.04 and I wanted to try out Gnome 3, so i started installing it, and during the installation it is asking me what display manager should I use by default: gdm or lightdm. ...
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23 views

BlueProximity and LightDM / Xubuntu [duplicate]

I would like to use BlueProximity to lock/unlock my session in Xubuntu 14.04. Problem is that I could not find LightDM command for unlocking a screen (googled several times). I would prefer not to ...
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1answer
28 views

Ubuntu 12.04 login returns me to login manager, how to diagnose?

This started with me adding a graphics card to my system. When I booted up, ubuntu complained that the graphics config had changed, and gave me a terminal session. I copied ...
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36 views

Xmonad keyboard not working (Macbook pro)

I've installed Ubuntu 14.04 on my Macbook Pro retina (11,1) and it all worked swimmingly. Then I tried installing Xmonad, selected it once from my lightdm manager and now it loads by default. (The ...
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2answers
41 views

unable to login after removing guest account

Hello i try to disable the guest account in ubuntu 14.04 by typing these commands sudo gedit /etc/lightdm/lightdm.conf allow-guest=false After re-staring ubuntu it boot up but dos not go to ...
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41 views

How to enable Lubuntu lightdm dinamic autologin (sorry for my english)

Hi I freshly installed Lubuntu 14.04 I disabled lightdm autostarting by editing /etc/default/grub Well.. I got some problems "sudo service lightdm start" is working but startx command always ...
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12 views

Microsoft LifeCam HD-3000 slows down login

As long as my Microsoft LifeCam HD-3000 is plugged in my machine freezes for about 30 seconds as soon as the login manager comes and another time right after I put in my password. This is seriously ...
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1answer
31 views

Impossible to start Ubuntu after installing lxde

i just tried installing lxde on my Ubuntu 14.04. I wanted to try working with two different screen at the same time. So to do that typed CTRL+ALT+F2 to go in another terminal and then i typed the ...
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356 views

How to make ubuntu 14.04 a kiosk [duplicate]

I have made a clean install of Ubuntu 14.04 LTS Desktop and now want's to convert it into a kiosk with a full screen webbrowser. This was previously done in 10.04 and worked perfect, but due to ...