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

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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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119 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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2answers
623 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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229 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
579 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
3k 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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76 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
5k 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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2k 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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1answer
1k 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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266 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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1answer
9k 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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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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211 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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355 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 ...
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1answer
367 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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1answer
266 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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972 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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84 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
636 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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1answer
217 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
101 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 ...
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1k views

Xubuntu and Ubuntu's display managers coexisting

I'm running Ubuntu 14.04. I installed Xfce via the 'xubuntu-desktop' package to try it out. After a couple days I decided to get back to Unity so I removed it and several other packages it came with. ...
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1answer
197 views

LightDM does not ask for login password

I have an auto-logged in non-sudo user called "screen". I have a passwordless sudo but login-protected user called "support". I'm pretty sure this was working fine before, somehow maybe the latest ...
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88 views

When I turn my monitor on after it has been off, it does not display anything

I am running Xubuntu 14.10 on a desktop and use LightDM. As I said in the title after I turn off my monitor (with the computer already on) and then turn it back on again there is no input from my ...
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1answer
377 views

Xubuntu 12.04 desktop won't start

My computer started hanging on the greeter screen. I cannot start a local X session, but can still select rescue from GRUB and boot to a tty. In addition sshd and the xrdp server seem to work normally ...
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2answers
398 views

Configure and run indicator-sysmonitor on boot at login prompt

I want to use indicator-sysmonitor to display an indicator showing that the network connection is up amongst other things immediately at boot on the lightdm login screen. I followed these steps to ...
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1answer
394 views

Lightdm-gtk-greeter centre image

I use lightdm with lightdm-gtk-greeter. Is it possible to modify the greeter so the login screen will centre a wallpaper image that is smaller than the screen? The image I use gets stretched to fill ...
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1answer
223 views

Cannot change GTK and icon after changing LightDM greeter

I changed my LightDM greeter and suddenly I cannot change my gtk or icon theme. The dconf settings are there, but the system is not responding to changes, nor are the themes being used by all ...
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1answer
481 views

Unity has disappeared from lightdm after updating gnome-shell

This morning I ran sudo apt-get upgrade and it prompted me to update gnome-shell. I never really use the gnome desktop environment, but I figured I might as well keep it up-to-date. After restarting ...
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1answer
241 views

nvidia and intel low-graphics mode error

I have ubuntu 14.04.1 64bit installed with intel and nvidia video cards . I'm using xorg-edgers ppa to graphics drivers . Today i got an update for the drivers (i think it was the mesa drivers) . when ...
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1answer
6k views

What to do when nothing seems to fix Ubuntu 14.10 stuck after log in?

So I run Ubuntu 14.10 on HP Pavilion g6, i5 and with Radeon HD6500. Yesterday Ubuntu crashed and since then I can't get anyfurther than the log in screen. Ubuntu simply stucks with only the background ...
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1answer
359 views

Wake from suspend, password field missing?

Ubuntu 14.04. Brightness & Lock settings are to turn off screen after 10 minutes and lock screen after 30 minutes. 50% of the time, when I wake my computer from suspend, the login field to enter ...
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92 views

X11 doesn't show windows edges, task bar nor anything

I've got a problem with X11 as when I turn on my computer, after the system has launched, I see only my desktop. I don't see the upper nor left bar. When I doubleclick a file on my desktop, a new ...
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1answer
2k views

How to change Ubuntu's default login screen for gnome ubuntu login screen?

I'm using 14.04 LTS with unity, but i removed the ubuntu desktop and installed the gnome ubuntu desktop instead, since unity has given me some errors... The thing is, im happy with gnome, but the ...
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1answer
484 views

nVidia on Ubuntu 14.04 black login screen (not freeze)

Recently I installed STEAM on my Lenovo IdeaPad Y510p (core i7 + nVidia 755m) laptop running Ubuntu 14.04. I want to use nVidia for sessions when I play games and Intel for everything else. Therefore ...
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1answer
205 views

Handling laptops with docking stations on XFCE

Anyone here running a setup in which they use a laptop + docking station setup for XFCE? At work, I plug/unplug from multi-monitor setups all the time and on unity I didnt have an issue (Radeon ...
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434 views

Ubuntu 14.10 Lightdm greeter resolution before login

There are various answers for changing the resolution of the Lightdm greeter before login by adding a root executable script to /etc/lightdm/lightdm.conf like this: [SeatDefaults] ...
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1answer
31 views

Strange Driver Corruption

So I have a "portable" install of 14.04 (I installed the full distro on a USB3 stick) and I'm having the strangest driver corruption/bug: As you can see, anything that uses it's own renderer (I ...
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2answers
92 views

Unrecognized keyboard layout after login

Two of my computers running Ubuntu randomly ignore the configured keyboard layout and fall back to qwerty. On one computer the configured layout is "Français" (French), on the other it is a bépo ...
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1answer
770 views

Problem with LightDm on Ubuntu 14.04 server

I have a fresh install of Ubuntu 14.04 server and installed lightDM (apt-get install lightdm) , started lightdm (start lightdm) a login screen appears with an error "Failed to start session" as ...
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924 views

snd_hda_intel fails to load and black screen after delay

two days ago I modprobe -r snd_hda_intel and modprobe it back. Today I got a black screen after a certain delay when loading lightdm. Here's the message in dmesg: [...] [ 47.313515] snd_hda_intel ...
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300 views

Higher Resolution Xrandr 1400x1050 Legacy GPU

Dear Ubuntu Community, recently I (re)found my 10 year old Sony Vaio laptop, a PCG-GRT916V to be exact. I immediately had the idea to put this old laptop to good use. Over the course of two weeks I ...
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1answer
453 views

lightdm-gtk-greeter keeps loping into login screen

Since I had problems with unity-greeter I had installed lightdm-gtk-greeter and it keeps looping into the login screen. 14.04 ubuntu I have several solutions: removing .Xauthority file, reinstalling ...
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1answer
215 views

Where can I find alternative greeters for LightDM?

Is there a place where I could find a list of LightDM greeters and where I could download them? I would very much like to see some custom made greeters so I can fully customise my Ubuntu :) I know ...
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1answer
5k views

The system is running in low-graphics mode in Ubuntu 14.04 and /etc/lightdm/lightdm.conf missing

I always see the low-graphics mode error and have tried several solutions (links below) but in vain. [intel graphics, Ubuntu 14.04 running on a dual boot with windows7] How to fix "The system is ...
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1answer
250 views

Unity Greeter starts with a black output Screen

The unity greeter in my Ubuntu 14.04 laptop starts with a black output screen. When I say this I mean every error and output of the greeter is printed on the screen but the GUI is not visible. What I ...
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2answers
1k views

Problems loging in gnome-session after upgrade to 14.04

I just upgraded from ubuntu 12.02 LTS to 14.04 LTS. After a miriad of problems which i was able to solve one by one, the upgrade was successful. It was however impossible to log in the default gnome ...
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1answer
1k views

Where is “session sufficient pam_lsass.so” and the “/usr/share/lightdm/lightdm.conf.d/50-unity-greeter.conf”

I am new in Ubuntu, Ubuntu Server 14.04 LTS. I am setting up a Samba File Server and join it to our domain. I configured some of the configuration, but in the step 6 of this guide, I was unable to ...
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1answer
2k views

How can I make lightdm scale on a hidpi screen?

I have a laptop with a 3200x1800 screen. When I start up my laptop, lightdm doesn't scale to the resolution and looks tiny. When I lock the screen afterwards, lightdm scales and looks fine. I found ...