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

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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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191 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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232 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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63 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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43 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
38 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
190 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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214 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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2answers
646 views

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
43 views

How to start a process and attach it to the terminal corresponding to the local graphical shell?

I'm running Lubuntu 13.04 using lightdm as my login environment. If I'm logged in to the graphical session and start my process, everything is groovy. But if I start the process remotely (ssh ...
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1answer
459 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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42 views

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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60 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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154 views

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
221 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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63 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
42 views

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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149 views

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
347 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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131 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
130 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
75 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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62 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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34 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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74 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
494 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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160 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 ...
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124 views

How can I add a custom python indicator to the unity-greeter login screen?

I've installed a custom indicator called PRIME Indicator and it shows up in the top panel (next to date time etc) after I login. I would like to show the indicator before login on the unity-greeter ...
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4answers
318 views

Cannot unlock session if user has no password

I created an account with no password for my 3 year old child. After some time of inactivity on that account, the session locks. Then I cannot unlock the session. Trying to unlock with an empty ...
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1answer
1k views

Changing window manager in LightDM

I'm using Ubuntu 14.04 and wanted to change the default Unity/Compiz window manager. I've went through the LightDM documentation and saw a related question, but I still can't make it work (I tried to ...
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46 views

Boot-repair issue with Ubuntu 14.04

My VPS works absolutely fine but has had a few issues with booting since I upgraded it to Ubuntu 14.04 from 12.04. It will not boot after being switched off. So I Googled the problem and it looked ...
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1answer
2k views

Changing X display manager

On my Ubuntu 14.04 there's gdm and lightdm installed. Is it recommended to have both installed? How can I check which one's active and how can I change them? I have some troubles with the Ubuntu ...
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1answer
934 views

LightDM: user-session doesn't work, nor do multiple sessions at start

On my media center (XUbuntu 14.10), I am trying to autostart Kodi in the focussed session and also start and autologin xfce4 in a second unfocussed session (I hope Steam In-Home Streaming doesn't need ...
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520 views

VNC over lightdm results in blank screen

I'm trying to set up VNC over lightdm so multiple users may log in to the server and have their own session each. I'm using TightVNC Viewer from a Windows machine to connect to the Ubuntu virtual ...
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181 views

Changes in /etc/lightdm.conf.d/*conf or /etc/lightdm.conf makes any difference

I am trying to make my lightdm use a correct setup of my displays both for login and session. I have most likely misunderstood something here, but by reading the wiki I did the following: I have ...
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45 views

cannot lock screen, create a new user or switch users in unity

I tried lubuntu-desktop once as an alternative desktop environment alongside unity and then removed it, however from then on I have to login twice and any new users created fail to login, the lock ...
2
votes
1answer
3k views

configure lightdm greeter in ubuntu 14.04

Earlier I was using the [not ugly] old styled login screen. Recently have installed lightdm greeter to change my login box position from left to center. Now, I have to configure lightdm to disable ...
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40 views

unsquashing a liveUSB, I found that the filesystem is not identical to the one loaded from liveUSB

so I have ubuntu studio 64 in a live USB and I wanted to change the way it boots. Namely, the liveUSB boots directly to a live user session bypassing lightDM. I want to change that and as I figured ...
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89 views

how can i boot to normal user on live USB

I installed ubuntustudio 64bit 14.04 on a usb stick. The aim is to use it as a normally installed session but with the added benefit of keeping all my OS in a usb and using any pc available. This ...
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157 views

Lock screen asks for password on no-password account

The Ubuntu lock screen always asks for a password even when the account does not have password. In my opinion, it should be exactly like the login screen: a button "connect >" for accounts that don't ...
2
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1answer
249 views

Problems with login screen kubuntu, lightdm

Recently, I installed xfce on my kubuntu pc, when I got tired of it, I uninstalled it. Here is where my problem appears, the login screen doesn't get back to normal kde login screen, it becomes a ...
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94 views

Program with xserver +lightdm not working

I have installed xserver-org and lightdm on Ubuntu 14.04 server. I then created a desktop entry to run a program such as Firefox once I login. A couple of issues I'm having. My machine is headless ...
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1answer
150 views

Change Display Managers Without Input

so I am working on a project which will be a Lubuntu install without touching anything during the install process (except after a few seconds of quick input), and I want to uninstall lightdm and ...
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635 views

GUI login problems in Ubuntu 14.04LTS

my problem is very similar to that presented here: Ubuntu gets stuck in a Login Loop I am using Ubuntu 14.04 LTS. I can enter my account in GUI just for 1-2 seconds after that I am returned back to ...
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0answers
67 views

Warm boot vs cold boot: How to compare logs when I can't log in for one?

I have a question that is tied to a previous issue and looking specifically for how to troubleshoot: LightDM won't start after Grub - Cannot Access TTY unless closing and re-opening lid I have ...
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0answers
70 views

Chrubuntu 12.04 Desktop Won't Load

I'm on a Lenovo X131e Chromebook. Upon start up I am able to move the mouse pointer around a black screen with a blinking text cursor in the top corner. If I switch to a terminal and then try to ...
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2answers
343 views

How to change Ubuntu login screen background without dconf-editor?

I am trying to change the Ubuntu login background which should be the same as the wallpaper, without installing dconf-editor or additional software. Is is possible?
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254 views

Ubuntu 14.04 stuck in login after upgrade

After upgrading from 12.04 to 14.04, I'm not able to login anymore (guest account doesn't work too); there's a loop (it goes back to the login). What should I do? I've already read Ubuntu gets stuck ...
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1answer
152 views

Ubuntu 12.04 in login loop as lightdm-session says upstart not found

I tried to install a package systemd (this replaces upstart in Utopic 14.10 and up). See my yesterday question How to Re Generate All Gnome Schemas for Ubuntu 12.04. The result was that it didn't ...
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1answer
65 views

error opening display after lightdm stop

I'm trying to install CUDA and following these instructions. Eventually I get to a point where I need to run: sudo service lightdm stop At that point the GUI shuts down but instead of a terminal ...