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

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Black screen slides down and kills lightdm in Ubuntu 14.04 w/ Nvidia card & Brightness Controller

Nearly every other day my monitors black out from the top of the screen to the bottom leaving me with to black screen and no cursor. The black screen takes about 4 seconds to slide from the top to the ...
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32 views

Login loop after killings process

I'm having an annoying issue. I terminated some processes from another users, which were holding me back changing the user's home folder location. I killed 2 processes (I do not remember the actual ...
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1answer
33 views

session-cleanup-script not called

Because of this Bug I needed to edit the session-cleanup-script config in /etc/lightdm/lightdm.conf. As the same post suggests, adding session-cleanup-script=/etc/lightdm/lightdm.conf.d/cleanup.sh is ...
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41 views

greeting screen disappearing and cannot access tty

When I start my Laptop I see the lightdm greeting screen, however (regardless of what I do) my screen goes black after some seconds leaving my only with the mouse pointer. I can still interact with ...
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1answer
42 views

After an update, locking and logging in puts me back at login screen

Sometimes, after running an update, if I lock my screen and then try to log in again from the lightdm greeter, it goes black, sits for a while, then puts me back at the login screen. Ubuntu gets ...
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2answers
40 views

Change Icon for Window Manager at login

is there any way to change the icons for a Window Manager at the login screen? This one: The files are in /usr/share/unity-greeter/ that I know, but can I change the Icon for a WM if it has none? ...
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1answer
30 views

Make lightdm login on the correct monitor?

Is there a way to get lightdm to display on the correct monitor? It defaults to my DVI monitor on the right, but I want it on the DP monitor on the left.
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37 views

Wrong language at login screen

Kubuntu 15.10 with all (or almost all) updates. LightDM is used. HW is HP EliteBook 8530p. I'm using three languages: English, Russian, Georgian (in this sequence as I've listed them). Switching ...
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100 views

15.10 Unity stuck after login, even as guest, background image permission denied despite 644

Yesterday I ran the last Ubuntu security updates, and now my desktop does not open anymore. Only the purple login wallpaper is visible (my user wallpaper is different and does not appear) and I can ...
2
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1answer
915 views

How to change lock screen background Ubuntu Mate

I would like to change the lock screen background in Ubuntu Mate 16.04. I have found out how to change the background for unity by changing the com.canonical.unity-greeter setting but I can not find ...
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0answers
85 views

How to set new user (and guest) default theme settings

I recently installed gnome shell to try it out. I want to be able to switch between the 2 environments. (unity + gnome shell) The problem is that after installing gnome shell, all new users (...
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13 views

Is there a way to add a splash screen while lightdm is switching users

I share a laptop with my 10 year old daughter. We're using Ubuntu 14.04lts and when she switches to her own account LightDM blanks the screen for a 10 to 20 seconds, sometimes longer. For a 10 year ...
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95 views

14.04 Login Loop

I know there are already several questions about this problem. However, I did not find a solution using the answer already provided. I just installed Ubuntu 14.04 LTS dual-boot alongside Windows 8. ...
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17 views

Cannot login with Xserver on Ubuntu 12.04

I cannot login on my account using the X Window System. However I can login from a different machine using ssh and locally using text terminal. I tried to restart the X server with sudo restart ...
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1answer
49 views

thor27's steam-login without entering Big Picture

I've installed steam-login, which allows me to start Steam as a standalone session directly from the lightdm login. By default, it starts Steam on Big Picture mode, but I would like it to start on ...
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13 views

Lightdm - Login using two passwords?

I was thinking of an extra security layer by using two passwords for login. Is it possible to configure lightdm in such a way that it will ask you for two correct passphrases? I thought of including ...
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1answer
43 views

Unable to log in after graphics driver change

After switching from the proprietary to the open source AMD GPU driver via the "additional drivers" menu, my display was not recognised properly after rebooting. It was automatically set to 93Hz (60Hz ...
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1answer
158 views

Ubuntu blank purple screen on startup

I have Ubuntu 14.04 32bit LTS installed along with Windows 8 (dual boot). I do not have any graphics card(nvidia ,amd ,etc). I have Intel hd graphics driver. It worked fine for many days, but now, on ...
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76 views

Problems getting Synergy to autostart at boot time

I've got a windows PC, and an Ubuntu 14.04 LTS machine. I have a keyboard and mouse connected to PC, and Synergy to remote on to the 14.04. I have to unplug the mouse and keyboard and sign in to 14....
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79 views

External monitors have no signal after boot if laptop lid is closed

I have a Lenovo Thinkpad t440s with the intel graphics card running Ubuntu Desktop Trusty 14.04.4 LTS. This issue occurs with the ThinkPad Ultra Dock with two external monitors attached to it. After ...
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128 views

Start Ampps, with root permissions, once desktop loads

Been hacking my way through getting Ampps to work on Ubuntu. Ampps will be used to use host a local Web app for my families business, and I need Ampps to start when Ubuntu starts, always. I figure I ...
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20 views

Updated: lightdm doesn't work after installing NIS

I know this has been discussed, but none of the answers I've seen seem to help. My apologies if I'm beating a dead horse. (Please tell me) When I install NIS with autofs on top of a vanilla Ubuntu 14....
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1answer
221 views

Ubuntu 14.04 Infinite log in after installing nvidia drivers

I just installed ubuntu and I'm trying to get the drivers for GTX 960m. I followed the instructions given here: https://elementaryforums.com/index.php?threads/howto-install-latest-nvidia-driver-on-...
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46 views

LightDm fail - I can't get the login screen - Some packages can not be installed Depends libcheese7 and libcheese-gtk23

I can not get the login screen. I have tried the suggestions given in the forums, such as uninstall lightDm or gdm and install again, but it does not work. I get the following message when I try to ...
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1answer
158 views

How to make Lubuntu login automatically?

I want to know how to make Lubuntu 14.04 restart every two hours, login, and open a program. I am currently stuck on the first part which is to make it login automatically. I have tried changing ...
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64 views

desktop freezes frequently when working on high performance mode (nvidia graphics card) : ubuntu 14.04

I am using a Lenovo Z40 laptop with hybrid graphics Indtel HD + Nvidia 820M and ubuntu 14.04 with a kernel 3.13.0-79-generic. My desktop keeps freezing on me very frequently but only the keyboard ...
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13 views

logout isnt working [duplicate]

What is the command to log out using the terminal? my logout button isnt working. Im sure I can exit using sudo pkill lightdm is that the command, or is there something else? I’m using Ubuntu mate 15....
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152 views

Desktop login fails/loops , “Could not get UID of name …”

With Ubuntu 14.04.4, I cannot login with the unity desktop. No answer from Desktop login fails, terminal works helped. After latest update for 14.04, cannot log in to any user account did not help ...
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3answers
94 views

Xubuntu 14.04 - Strange “Log Out” button behavior

I'm currently using Xubuntu 14.04. Today, February 19th, I got home and was presented with some upgrades (which updated Xubuntu to the 14.04.4 point release). But I don't know if these upgrades are ...
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1answer
68 views

How can I fix lightdm login black border?

There is a black border around my login screen every time I boot up. I have a second monitor connected and noticed that the background of the first monitor shrinks so that it matches the background of ...
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0answers
118 views

xubuntu 15.10 & lightdm setup issues

I've installed xubuntu 15.10 with a minimal installation of xfce (from mini iso). So let me explain my setup and needs. I have created 3 users : maintainer : for administration task, hidden from ...
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134 views

Login Loop after install nvidia driver on Ubuntu 15.10

I tried to install Ubuntu 15.10 but I always get an login loop after I install the nvidia driver I'm using an dell inspiron 15 7559. First of all I upgraded the kernel to v4.3 for the skylake ...
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49 views

unable to login, issue with graphic drivers/lightdm

While trying to solve one issue with my monitor I created one much worst! Now, I cannot login with my user account, when I type the password, it shows a black screen (less than 1 second) and then the ...
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1answer
66 views

How to purge lightdm users list?

The computer is configured with FreeIPA (ipa-client). After a user has logged in for the first time, it is listed on the logon screen. However even when the user has been deleted on the FreeIPA server ...
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116 views

Multiseat on one video card

I'm trying to set up a multiseat configuration on a single video card (Nvidia GTX 680) under Kubuntu 14.04. I can run two x-screens for one user, what nvidia-settings natively supports. So I think ...
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1answer
80 views

/etc/lightdm/unity-greeter.conf file and /etc/lightdm/lightdm.conf missing

In my Ubuntu 14.04 /etc/lightdm/unity-greeter.conf and /etc/lightdm/lightdm.conf files are missing. Only /etc/lightdm/users.conf file is there in /etc/lightdm/ directory. And login screen is not ...
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69 views

Unable to login to GUI 14.04

I am unable to login to the GUI after an upgrade: Feb 15 09:32:07 dl-maa-00391506 lightdm: pam_unix(lightdm-greeter:session): session closed for user lightdm Feb 15 09:32:07 dl-maa-00391506 lightdm: ...
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55 views

How to load policykit privileges with X on Ubuntu 14.04

In Ubuntu 10-12 I was able to boot in text mode and run startx. However, from a fresh install of 14.04, if I disable lightdm and use startx, startx will load the desktop environment without any ...
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1answer
35 views

Authorization problems after VNC uninstalling on Xubuntu 12.04

I had setup vnc through vncserver script http://manpages.ubuntu.com/manpages/hardy/man1/vnc4server.1.html .This script were launched under the root. After that i decide to use xrdp instead vnc and ...
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1answer
132 views

run startup script which requires a xserver session

I have a python3-script which uses the Gtk-module (imported from gi.repository, for recent-manager functionality), requiring a link to the current xserver session (lightdm service in Ubuntu). Running ...
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93 views

Whenever I press the power button in the login screen, my computer shuts down immediately

I sometimes leave my computer for long periods of time, and after a while, my computer will require a password to re-enter the live session. However, when I come back, since the screen has already ...
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22 views

can't change from gdm and monitor swaps after login

I ran updates yesterday. This morning, the login screen had changed from lightdm to gdm (i think) and three seconds later the screen went blank. I couldn't even get to ctrl alt f1 terminal. I did a ...
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65 views

Lightdm is giving me “The system is running in low-graphics mode”

I was trying macbuntu on Ubuntu 15.10 and due to some bug in it, i wasn't able to login into the system as login screen was coming again and again even after feeding in the right password. So, i ...
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1answer
57 views

Ubuntu Login Loop After Google Authenticator installation

My Ubuntu 14.04 LTS Desktop was working fine until I decided to play around with Google Two Factor Authentication for Linux. I followed instructions and setup the google-authenticator. When I ...
0
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1answer
75 views

Numix-circle icons not effective in Unity-greeter

I'm using Ubuntu 14.04 and using the Numix theme with the Numix-circle icons. I like very much the unity-greeter as a login environment, is elegant and I think it goes really well with the Numix theme ...
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2answers
190 views

Console login redisplays login screen after entering password

I attempted to login the console using 'ubuntu default' and after a very brief moment of displaying the desktop background I am returned to the login screen. It was working flawlessly until a few ...
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1answer
285 views

How to log in automatically in Xubuntu 15.10?

I'm struggling in my Xubuntu 15.10 installation to let my user automatically log in each time. I've found two interesting threads so far, but the are referring to older versions of Xubuntu, the ...
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68 views

Changing Wallpaper crashes desktop

Recently (might have something to do with lightdm), when trying to change my wallpaper (either manually or through an automated one like Variety) my desktop seems to crash to where I can't click on it....
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26 views

Why GNOME as default in Login Screen even after lightdm as Default?

After running sudo dpkg-reconfigure lightdm it has successfully set Unity as DE but there is an annoying text called (default) in Gnome's row when selecting DE at login screen. Is it normal ? ...
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99 views

ubuntu is loading forever

My 15.10 ubuntu laptop is not starting... (normaly) is just loading and loading not my picture but is the same if i go into the bootmenu and use safeboot and then go to comand line log in and ...