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

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Unable to reinstall unity-2d on Ubuntu 14.04 desktop LTS?

It is wiered that I'm not able to reinstall unity-2d on my system. I removed it as it was not ready to go into the 2D mode. I have XRDP install for which I need Unity-2D. after removing the unity-2d ...
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1answer
90 views

/usr/bin/X eating all the CPU

I have Ubuntu 12.10 system and it works slow. For checking I ran Htop command and found out that /usr/bin/X -nocursor :0 -core -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -n eating all the ...
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1answer
62 views

I've broken lightdm

I've installed xubuntu-desktop metapackapge on my system and afted this action unity-greeter has gone away. Ive purged lightdm twisely, then installed lightdm and unity-greeter. But still no result. ...
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34 views

Ubuntu 12.04 boot problem (headless)

So I set up an ubuntu box I have to run headless some time ago - using it as a media server for plex and other things. I'm able to use X to remote desktop into the machine without a problem. ...
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2answers
327 views

GDM and Lightdm don't work after update; KDM is ok

After updating Ubuntu (apt-get update, apt-get upgrade and apt-get dist-upgrade) last Tuesday, GDM stopped working, and the startup hangs on the Ubuntu logo. Lightdm also don't work (same happens). If ...
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27 views

Error after adding entry to ligthdm.conf

After giving entry greeter-show-manual-login=true in lightdm.conf file it gives an error after reboot that system running in low graphics Again if I remove the above entry the system boots normally ...
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23 views

NVidia screen config

How do I restore the display config to the one I got during installation? I'm running Ubuntu 14.04 with dual nvidia gtx 570 connected to two screens. When I installed ubuntu at first I ran 13.10 ...
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208 views

LightDM Customisation KDE or Unity Greeter in Xubuntu 14.04

my favorite Distro is Xubuntu, only the GTK greeter let my eyes bleeding (i know, its lightweight and simple). So i check these hints: ...
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1answer
43 views

Missing mouse after switching account

I have an old Acer Aspire 6920G with Ubuntu 14.04 and lightdm installed keeping the existing /home partition and two working users. When I switch from a user to the other I miss the mouse on the ...
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1answer
54 views

email body empty when I use “echo” in mutt commandline mode with root account

I have use mutt to send mails. It works fine when I use my own user account: e.g. echo "foo bar" | mutt mymail@mymail.com However, when I put the above command in /etc/lightdm/lightdm.conf (I want ...
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1answer
133 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 ...
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1answer
52 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 ...
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1answer
29 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 ...
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75 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) ...
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44 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?
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2answers
91 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 ...
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54 views

Dell XPS 15Z L511Z Mouse and keyboard freezes in lightdm Ubuntu 14.04

After succesfull login start to use both touchpad and keyboard on my Ubuntu Desktop. But for some reason nor keyboard or touchpad works. If I press ctrl alt fx and go to terminal and then alt f7 to go ...
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30 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). ...
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1answer
603 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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100 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 ...
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189 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 ...
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34 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 ...
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79 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 ...
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2answers
292 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 ...
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1answer
70 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 ...
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67 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 ...
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22 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 ...
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1answer
141 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 ...
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1answer
205 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 ...
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106 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? ...
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1answer
74 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 ...
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316 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 ...
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45 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 ...
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19 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 ...
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1answer
208 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 ...
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1answer
36 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 ...
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1answer
117 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 ...
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1answer
157 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 ...
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16 views

Add monitor settings in lightdm

Where do I have to place missing monitor preferences in lightdm, to load them at startup?
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1answer
1k 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 ...
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0answers
45 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?
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0answers
117 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, ...
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166 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 ...
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1answer
102 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
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1answer
473 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 ...
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71 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 ...
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1answer
1k 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 ...
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1answer
189 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 ...
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33 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
657 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 ...