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

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Stop LightDM after log out

I create a highly customized Ubuntu desktop. When a user logs out from Unity LightDM should be stopped. I did it this way: Added this to /etc/lightdm/lightdm.conf: [SeatDefaults] ...
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7 views

Two graphics drivers at the same time?

I have an Intel integrated graphics card "Intel cooperation skylake integrated graphics (rev 06)" and an Nvidia GTX 960m on my laptop. I wanted to use the skylake integrated graphics card for my ...
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15 views

Can not login .XAuthority seems broken

I know that this is a common error and I have read many threads in this regard. I get to the logon screen and type in my pw and it hangs for 20 seconds or so and then displays the log screen again. ...
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15 views

Login problem after Hibernate with Dell E7440

Yesterday I installed Xubuntu 16.04. It uses the lightdm display manager to log in. This works. The issue: I use a Dell Latitude E7440 with Docking station. Most of the time, the screen of the ...
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7 views

Ubuntu 14.04 login loop Unity terminated with status 1

I have ubuntu 14.04 and am stuck in a login loop problem despite trying the common answers to the multitude of questions on the site ,none have worked. I can't figure out what's wrong and would be ...
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35 views

Ubuntu 15.10 to 16.04 and lightdm display-setup-script: can't connect x server

After upgrading from 15.10 to 16.04 my lightdm.conf command has caused black screen on boot, never reaching the login screen: display-setup-script=xrandr --output DP2 --auto --primary --output HDMI3 ...
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1answer
40 views

Takes a very long time to log in to gnome 3.18.4 in Ubuntu 16.04

I just installed Ubuntu 16.04 via update from 14.04. I'm using gnome-shell 3.18.4. When I want to log to my gnome shell session the login is very slow, it takes more than 1 minute where the the only ...
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120 views

Ubuntu 16.04 Xorg / lightdm crashes on boot with GTX 970

When I boot my Ubuntu 16.04 liveUSB on my desktop (GTX 970, i5 4440) I get to LightDM and then everything falls apart. My mouse freezes and my main monitor (connected to the GTX 970) starts blinking ...
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208 views

Ubuntu 16 Stuck in Login Loop after Installing Nvidia 364 Drivers

This didn't start out as a problem with the login loop. I was attempting a clean install of Ubuntu 16 and using the new feature that allows it to detect proprietary drivers for me. I started off ...
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109 views

Ubuntu 16.04 stuck at LightDM login screen

So I just installed Ubuntu 16.04 yesterday. Today I wanted to login to the computer and suddenly it doesn't log me in anymore. I can enter my password, but when I hit return to log in the screen goes ...
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16 views

How to make user automatically log in in Lubuntu 16.04? [duplicate]

How do I make a user automatically log in in Lubuntu 16.04?
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15 views

shutdown or reboot after entering wrong password x times

My laptop is configured with a bios password to unlock the encrypted ssd. Most times I don't shut it down and use just suspend/resume - this of course leaves the ssd accessible. To increase security ...
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1answer
142 views

login loop after upgrade to 16.04

I encountered a login loop after updating xenial beta to the latest updates. I tried a lot of things: xauthority or /tmp privileges change Reinstalling nvidia drivers, removing them. reinstalling ...
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2answers
239 views

16.04: lightdm(lockscreen) can't connect to wifi. (1) Insufficient privileges

After upgrading to 16.04 (clean install) from 14.04, (so not really upgrading, but you get the point) I notice that lightdm with unity-greeter can't connect to WiFi with network-manager. I get the ...
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1answer
566 views

How can I set up Ubuntu Server 16.04 to load a GUI on demand?

I would like my server to boot to command line by default but load a GUI when I need one. I have a virtual machine set up just for testing and I got the standard UNITY GUI installed on it no problem. ...
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5answers
2k views

Can't get nVidia drivers working with 16.04, logs out right after login

I have installed Ubuntu 16.04 beta 2 on Monday, Apr 18th. When I try to install nvidia-current, nvidia-361 or the version that jockey installs, either lightdm fails to start entirely or I can't get ...
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8 views

Ubuntu custom theme doesn't work on boot

My ubuntu custom theme doesn't want to load until i restart the lightdm service. That's the only solution that has worked so far. If i don't restart the service, i get the default system theme. How ...
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24 views

Is it ok to kill lightdm and related processes in lubuntu to reduce load as I use terminal? [duplicate]

I'm running Lubuntu 14 in my old PC. I have connected it to my router via ethernet and access it with putty, it has no dedicated monitor. I think the GUI is not needed any more, can I kill the ...
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4answers
150 views

How to boot to a terminal from a black screen and flashing cursor after updating the NVIDA graphics driver

I'm running Ubuntu 14.04 LTS and updated my graphics card to Nvidia Quadro K4200 in order to get stereo capability. It worked with the recommended Ubuntu driver (nvidia-352), although I struggled to ...
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39 views

Can't login to my account with neither gdm nor lightdm

What I've tried: I am able to login as myself via tty I can login as guest (graphical) Installing gdm and using that instead of lightdm (see title) ~/.Xauthority is empty and owned by me. ...
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26 views

14.04 boots into black screen even after a fresh install

So, this started after I took out the hard drive (after turning it off, and unplugging the power source). It would just boot to a black screen. It would show the purple ubuntu screen, but no log in ...
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14 views

port 6000 X11 opened out of nowhere, cant close it

Just noticed that my port 6000 is open. netstat -anup output: Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:6000 ...
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42 views

Span Wallpaper Across Displays in Lockscreen

In the Appearance tool, we have the option to span a wallpaper across multiple displays. On the Desktop it works fine: However, on the lock screen I see the same image repeated three times: ...
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2answers
35 views

Error while installing lightdm-webkit-greeter

I can't install the package lightdm-webkit-greeter on Ubuntu 14.04 sudo apt-get install lightdm-webkit-greeter Reading package lists... Done Building dependency tree Reading state ...
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1answer
25 views

GUI doesn't have escalated permissions, Ubuntu 14.04 lightdm

Relatively new user here. So I am having some permission issues with the desktop. The sysadmin before me set up Ubuntu 12.04 on the other machines, and it seems to work OK. I set a new machine up ...
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18 views

Xubuntu lightdm screen fliks

So on Xubuntu I have a lightdm by default. When system is booted or one is logging out and lightdm starts it blinks after 2-4 seconds. If I do logout form XFCE4 session for a mentioned period I can ...
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46 views

ubuntu gets stuck in a login loop

My Ubuntu is stuck in a login loop when trying to enter my desktop. When I login, the screen gets black and soon after that the login screen comes back. I referred Ubuntu gets stuck in a login loop, ...
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1answer
48 views

how to force DPI settings in Xenial?

Is it possible at all to force a specific DPI settings in Ubuntu Xenial? Recipes mentioned in Can I pass a dpi flag to lightdm to set the proper DPI for X? don't work anymore: I can successfully ...
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2answers
24 views

Can't install NVIDIA driver even after stoping lightdm

I want to install NVIDIA-Linux-x86_64-346.59.run using command from tty1 sudo su sudo service lightdm stop that generate output Stop : Unknown Instance: then continue with chmod +x ...
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0answers
26 views

Password not working on “Switch User” only

I have Ubuntu 15.10 x64, which was upgraded in a long series of upgrades going back to 9.04. Over time, many things (including most of the hardware by now) have changed. What has not changed, however ...
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1answer
38 views

Show all user accounts on greeter screen

Is there a way to have Kubuntu 15.10 default to showing all users known to the system on the login screen (greeter)? If I have users Alf, Bill, Chris, Daisy and Ella, and Daisy was the last user ...
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46 views

Change wallpaper LXDE Lubuntu 14.04

I am trying to setup my own ISO image based on 14.04 with some extra tools. Because of that, I was wondering If there is any way to change the wallpaper of the desktop. I tried to do it by editing ...
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1answer
42 views

Change lightdm-gtk-greeter background?

I've been Googling like a maniac trying to find an answer, so I've now decided to ask here. How do I go about changing the background of the login screen? (lightdm-gtk-greeter). It currently uses ...
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40 views

Ubuntu 15.10 Multiseat LightDM Login loop

I have a system using an Nvidia and Intel graphics adapters. I am using the graphics-drivers/ppa. After configuring multiseat, both seats appear on the correct monitors. The lightDM login works ...
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1answer
37 views

how to change the lightdm gtk session icon

Quick question - I'm using lightdm-gtk-greeter in both 15.10 and 16.04 In the panel the budgie-desktop session icon is appearing as a spanner (wrench) icon. Any ideas how I can change this from this ...
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0answers
20 views

Strange messages after running `sudo service lightdm stop`

I'm trying to install CUDA and the NVIDIA drivers on my Ubuntu 14.04 laptop. Following these instructions, I entered CTRL+ALT+F1, and then sudo service lightdm stop, in order to disable the X server. ...
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24 views

is plasma 5 supposed to work with lightdm?

I just upgraded a Ubuntu 14.04 install to the 16.04 beta and thought I'd try out Plasma 5 now that it's available to me. I'm not running Kubuntu, but I figured an apt-get install plasma-desktop ...
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23 views

Restore lightdm greeter dynamic background after installing xfce4 on Ubuntu 15.10

I recently installed xfce4 on Ubuntu 15.10. I did it in order to remote login using x2go. It is working perfectly. After installing xfce4, lightdm is displaying the blue mouse background that comes ...
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34 views

Black screen slowly slides down and kills lightdm in Ubuntu 14.04 w/ Nvidia card

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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0answers
30 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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votes
1answer
11 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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0answers
24 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
18 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 ...
3
votes
2answers
29 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? ...
0
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1answer
18 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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0answers
16 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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0answers
85 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 ...
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1answer
200 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
48 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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0answers
12 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 ...