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

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2
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1answer
337 views

Only a purple background displayed during the login screen. No wallpaper

I get only a purple screen for the background during login. Not even the default warty background. Its been like that since I installed Ubuntu. Ever since I came to know about the background of the ...
0
votes
1answer
206 views

How can I restore my Unity after removing KDE?

Eliah Kagan's answer to how to remove KDE here (How to remove all traces of KDE installed) is a great first step in removing KDE from a Ubunutu, but I still have remnants of KDE that were not removed ...
2
votes
1answer
46 views

How to run scripts as user (not as root) in lightdm?

I want to run some scripts before login every time my PC is started. I add the scripts in as greeter-setup-script in lightdm.conf. However, all the scripts are running as root! I want to use normal ...
0
votes
0answers
152 views

Problem When Switching to kdm Ubuntu 14.04

Successfully installed ubuntu 14.04 lts on my lenovo yoga 2 pro, was pretty happy with it, i wanted to check out KDE, (i'm a noob and this is my first time ever trying to install a display manager) ...
0
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0answers
115 views

Lightdm Remote Login disappeared (Ubuntu 14.04)

after some update, in the login screen, the option for the remote login disappeared. What should I do to restore the option?
-1
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2answers
164 views

Can't login after killing X Server with encrypted home directory

I have ctrl-alt-backspace enabled to terminate Xorg in an xorg.conf.d file: Section "InputClass" Identifier "Keyboard Defaults" MatchIsKeyboard "yes" Option ...
0
votes
0answers
93 views

What does “unknown code ovk 48” mean?

When I log in after update from 13.10 to 14.04, lightdm and gdm display unknown code ovk 48, I can log in without problems (lightdm requires that I press return after the message is displayed). ...
0
votes
1answer
2k views

Autologin Ubuntu 14.04 Desktop Session As Guest And Allow Web Browser

How can you autologin session as Guest? Bonus for if you explain how to limit the guest to only web browser functionality? (and save no changes) I see the thread here (How to enable guest account ...
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0answers
202 views

Enable numlock at login screen - with thin client?

I want to enable numlock at the login screen. numlockx is already installed. I've tried adding "greeter-setup-script=/usr/bin/numlockx on" to etc/lightdm/lightdm.conf, which by the way only works if ...
1
vote
1answer
572 views

How do I get my Unity login screen back after installing Lubuntu Desktop on 14.04?

I have installed lubuntu-desktop and xfce4 on a Ubuntu 14.04 installation. After doing so, my login screen changed. I have tried resetting my LightDM and attempted to modify the lightdm file, where ...
0
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0answers
59 views

Security problem - password not required after tying to active directory server

We have been using our AD server to authenticate Ubuntu users for years. We have a handy perl script that places all the correct config files and does all the work for us. However, I'm having a ...
1
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0answers
142 views

Force a user to use a specified session

I've looked everywhere and can't find how to do the following: What I have is Ubuntu 14.04 desktop 32bit configured with two accounts, one admin and one to run a web kiosk. I have set up a new ...
2
votes
2answers
1k views

Black screen on login maybe lightdm problem

Hi after I entered this command in terminal: sudo sh -c 'echo "greeter-show-manual-login=true" >> /etc/lightdm/lightdm.conf' and I reboot my PC i cannot login to ubuntu. After i select the os ...
1
vote
1answer
140 views

upgrade to 14.04 added lightdm to server edition

The update from 13.10 to 14.04 using do-release-upgrade seems to have added lightdm to my computer. On top of that, lightdm wasn’t even set up properly, nor do I want it set up. I prefer not to use ...
3
votes
1answer
229 views

lightdm: cannot type password on login screen

I am running 12.04 LTS, fully updated. My system is configured to automatically log me in into my account. Auto-login works fine. However, sometimes I need to access the unity-greeter/lightdm login ...
0
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0answers
28 views

restart lightdm - Are my applications gone?

So I have machine with an ATI graphics card which means restart lightdm is my second most used command right after ll. My question is, does restart lightdm blow away all the applications that were ...
2
votes
1answer
424 views

“exec: gnome-session: not found” when login using ligthdm

On login the password is accepted but it returns back to the login screen. Tried multiple times even after reboot ... same behavior. I had left my laptop (Lenovo Ideapad z510) in suspend mode (lid ...
0
votes
0answers
376 views

Multiple monitor issue with Gnome 3.10 running Ubuntu 14.04 LTS

I did a fresh install of Ubuntu 14.04 and installed Gnome Shell. When I enter display setting everything seems to work fine, that is until the next log off or reboot. For some reason the settings ...
0
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0answers
316 views

Lock screen not working

When trying to do something, I used the command "Service lightdm disable" or something like that. From the moment I did that, my lockscreen is not working anymore. How do I make it working again? ...
1
vote
1answer
213 views

XAuthority Error [duplicate]

When I try to login to my ubuntu 12.04 it accepts my account info and password but then a black terminal page appears and disappears very fast and it goes back to login page. I killed lightdm and then ...
1
vote
0answers
861 views

14.04 Trusty Tahr LIghtDM No way to switch session

I installed Trusty on my laptop. I like Gnome Shell more than Unity. So I installed Gnome Shell via Software Centre. I have LightDM 1.10.0 installed on my system. Unlike the previous version it ...
1
vote
0answers
51 views

Unity will not log on

Unity will only log onto the guest version on my computer, when I type in my password normally it momentarily flashes to a black screen then return to the login screen. When running unity through ...
0
votes
0answers
27 views

Have to restart lightdm to get working window response

Every time I boot my computer, I need to restart lightdm to have anything but the desktop respond to mouse click events. It works fine after this. I just installed Ubuntu 14.04 on a custom-built AMD ...
3
votes
1answer
385 views

Ubuntu 14.04, Nvidia Driver 304.117 for 7600GT

I have a clean new installation on an SSD Drive of Ubuntu 14.04 with NVidia Driver 304.117 running. After (very quick) boot I can hear that the login screen has started but no picture on my F-HD ...
0
votes
1answer
43 views

Cannot go to black screen (Manual login, Ctrl+Alt+F2) and cannot stop light dm

I have Ubuntu 12.04 installed on my Connoiseur work station with Intel Xeon processor. It has Tesla C1060 graphics card. Recently, the system encountered a kernel error and a pop up window appeared ...
0
votes
2answers
380 views

ldap client causes boot to be very slow on 13.10, causes hang on 14.04

I have successfully configured ubuntu as an ldap client following the howtos found on this site. i do the following. 1) apt-get install libpam-ldap nscd 2) configure ldap-auth-config 3) change ...
1
vote
1answer
528 views

lightdm doesn't start

Today when I started Ubuntu, it didn't start lightdm, showing a black screen. I changed to console Ctrl-Alt-F1 and tried to start lightdm manually sudo start lightdm It threw me to the graphic ...
0
votes
0answers
19 views

Add monitor settings in lightdm

Where do I have to place missing monitor preferences in lightdm, to load them at startup?
2
votes
2answers
6k views

Unity greeter does not display custom wallpaper

I am using Ubuntu 14.04 LTS 64 bit . I know this question has popped up many times but I want to make it very clear that none of the posts helped me a bit. my Problem: I am unable to get my custom ...
0
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0answers
87 views

How to increase or decrease brightness in the login screen when running within Virtualbox?

I can't able to increase or decrease screen brightness on the login screen. Is that possible to change brightness on login screen?
1
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0answers
180 views

14.04_x64 / Nvidia GT 240 , HUGE font notificaton at greeter and in naulitus after log-in

I've been using 12.04 for a long time - excellent version indeed, I decided to try 14.04 today. Installing without any problems. My VGA is Nvidia GT240 (legacy one), Nouveau display driver is fine, ...
0
votes
0answers
196 views

Problem to set the LightDM wallpaper in Ubuntu 14.04?

I used Ubuntu Tweak to change the login screen background, but it didnt work for my user. My Ubuntu has 2 users. To my user (admin) it shows the correct image (that had set in Ubuntu Tweak) for less ...
0
votes
1answer
403 views

Can't switch between lightdm and gdm

I installed Ubuntu Studio 13.10 from a minimal CD, and then upgraded to 14.04. But since the cd install, I have been trying to change from gdm to lightdm. I have tried sudo dpkg-reconfigure gdm, sudo ...
2
votes
1answer
1k views

How to disable shutdown/reboot from lightdm in 14.04?

In 12.04 it was possible to prevent system shutdown or reboot from the login screen by adding the following restrictions in /etc/polkit-1/localauthority/50-local.d (adapted from here): [Disable ...
0
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0answers
197 views

Can't start lightdm anymore since I installed DBus

I am looking to read a SATA port in Java, and saw I could do so installing DBus, so I downloaded DBus from here http://www.linuxfromscratch.org/blfs/view/svn/general/dbus.html and installed it (only ...
0
votes
1answer
3k views

No desktop appears after loged in using XDMCP

I just installed a test machine with Ubuntu LTS 14.04 and I went to configure the XDMCP access and found that the file /etc/lightdm/lightdm.conf is not there anymore. In Google I found that now it is ...
0
votes
1answer
294 views

Ubuntu 14.04 destop doesn't work

After I updated my Ubuntu 13.10 to 14.04, I can't start the desktop anymore. Booting seems fine, but the log in screen doesn’t fill the whole window. After login, I get a dead screen, with only the ...
0
votes
0answers
54 views

Xorg errors with alt. window manager

I'm currently trying to use the bspwm window manager, by following this guide. I have all the correct dependencies installed, and I compiled it correctly without any errors. The problem comes when ...
2
votes
1answer
1k views

LightDM is missing Gnome Shell icon

the Icon of Gnome shell is missing from lightDM.. I had to manually add Gnome Shell to lightDM because it didn't install properly on my machine. now I don't now how to add the Icon to lightDM. Im on ...
13
votes
3answers
26k views

How to configure lightdm to allow manual logins in Ubuntu 14.04

I used to modify /etc/lightdm/lightdm.conf, adding the line greeter-show-manual-login=true, in order to allow login for hidden users and root. Now I've just installed the new Ubuntu 14.04 and the ...
0
votes
0answers
225 views

Ubuntu 14.04 user restarting lightdm

Today, I started my computer, and when I type the password lightdm starts again instead of logging in. The same happened with gdm. Now I'm typing from computer's Guest Account.
0
votes
2answers
661 views

black screen / low graphics mode on logout

If log out from session, get black screen and the "low graphics mode" dialog, sometimes with cursor, sometimes without. 14.04 with latest fglrx. Dual head Pavillion dv6-6051er. ONLY when log out. ...
1
vote
3answers
2k views

How Do you set up numlockx at startup in ubuntu 14.04

In ubuntu 13.10 in order to install numlockx you had to run: sudo apt-get install numlockx After you install numlockx you had to run: gksudo gedit /etc/lightdm/lightdm.conf At the end of this file you ...
4
votes
1answer
307 views

No lockscreen option in CCSM 14.04

I expected to find Lockscreen option in CCSM after upgrading to Ubuntu 14.04, in Unity Plugin, general section, in order to switch between unity and lightdm. Unfortunately, It's not in the tab. Why?
5
votes
5answers
15k views

How do I set the LightDM wallpaper in Ubuntu 14.04?

In previous versions of Ubuntu, picking one of the default wallpapers meant that you saw it on the login screen as well. I am now on a clean install of Ubuntu 14.04, the LightDM wallpaper appears to ...
0
votes
0answers
139 views

How do I get lightdm to log me in when it freezes on Ubuntu 14.04?

I'm on Ubuntu 14.04 (somehow) and lightdm doesn't let me log in after I enter my password so I'm using gdm. gdm works fine. What happens is the password field disappears and I can't click on guest ...
0
votes
1answer
30 views

How to show old account on the greeter

TL;DR --> I want to know how to make an old account show up after reinstallation of Ubuntu so that I can log in to that account and not have to reinstall all the other software I had installed on that ...
0
votes
1answer
64 views

Incidentally removed lightdm - how to get it back?

I have incidentally removed lightdm, by sudo apt-get purge lightdm. Now I am not seeing login screen when starting the computer. (only black background.. nothing else) How to restore/install it back? ...
0
votes
1answer
270 views

LDAP authentication: not able to login through GUI but able to login from console

I am building a LTSP environment with LDAP authentication. I have configured the LTSP,LDAP server and client perfectly. I checked with getent passwd command in LTSP/LDAP client. I can see my LDAP ...
0
votes
0answers
29 views

How to disable “remembered last login” on lightdm?

Think there is 2 users on a Ubuntu: User1(=admin), User2. User2 logins to system and restarts it. It come up and User2 is selected for login, because he was who had last active session! I want to ...