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

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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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10 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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2answers
3k views

Upgrade to 13.04, user picture shows up on lightdm. Can I change it?

So, I recently upgraded my Xubuntu to 13.04, and afterwards I noticed that there is now a picture of me on the lightdm login screen. I have no idea where this picture came from, I don't remember it ...
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7 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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1answer
3k 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
104 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 ...
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0answers
12 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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0answers
47 views

Getting a blank screen with the mouse pointer when I re-login

I'm using an HP G62 laptop with Intel HD Graphics card and an Intel i3 Quad-core processor. When I first boot my laptop, I can login just fine and work with the system. The problem begins when I ...
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185 views

Close Lightdm in Ubuntu 12.04

Should I install the official NVIDIA drivers for my NVIDIA 8200? When I start the installation, it asks me to close the xserver. Only way to close it is to run the command : sudo service lightdm ...
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46 views

lightdm multiple virtual terminals single seat

LightDM configuration semantics for multiple seats seem to have changed in Ubuntu 14.10. More, it seems there has always been ambiguity regarding whether multiple seats necessarily means separate ...
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27 views

14.04 : Cinnamon goes straight to Fallback on Nvidia card after reboot

A couple of days ago I did an update on my machine. apt-get update After the update proceeded I rebooted the machine and tried to log into cinnamon. Straight after the login I get a message saying ...
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1answer
274 views

How can I change the KDE lockscreen?

I want gdm, lightdm, something--anything--other than the default one in KDE. I'm not talking about the login manager or anything, that I have set to gdm. I'm talking about the lock screen with the ...
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5answers
3k views

rotated monitor. login screen needs rotation

I rotated my screen, an once I login, it works fine. but, the greeter (login) screen hasn't got the message that things are rotated 90 degrees. How can i change the rotation of the login screen? ...
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1answer
25k views

How do I make GDM the default display manager?

I believe my question says what I am trying to achieve. Steps I tried to make gdm my default display manager: sudo dpkg-reconfigure than select gdm as my default. Edit ...
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1answer
30 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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42 views

Kubuntu 14.10: after 12 Dec 2014 update X doesn't start

After the update X doesn't start complaining a not valid xorg.conf file As a workaround at every reboot I do: sudo rm /etc/X11/xorg.conf sudo startx I also opened this bug: ...
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27 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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0answers
37 views

Can this error cause computer to reboot

There are 11 computers in my classroom. Yesterday they began to reboot randomly, all of them. I reinstalled Ubuntu and got this error everytime. Also, after reinstalling the rebooting continued. Can ...
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27 views

Lightdm has stopped working after Unwanted Nvidia display driver update

My computer has an Intel i3 processor and no other inbuilt GPU. However, the nvidia-* latest got installed on the computer during an update process. I used sudo apt-get remove nvidia-* to remove all ...
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48 views

sound widget daemon name in ubuntu 12

There is a popping window in lightdm that comes up when I click the volume adjustment buttons on my all-in-one asus PC. What daemon is responsible for it. Is there a way to use such widget without ...
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0answers
9 views

How to change screen locker in KDE?

Recently I start using lightdm in pair with google authenticator for two-step authentication. All works fine, but default screen locker in KDE doesn't configured to use 2-step auth. So, I want to ...
5
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1answer
4k views

How do I enable the user dynamic wallpaper in the login screen of Ubuntu 13.04? [duplicate]

Ubuntu 12.04 Unity greeter had introduced the selected user dynamic wallpaper which allowed, when selecting a user from the available users list in the login screen, the wallpaper to change to reflect ...
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1answer
23 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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0answers
15 views

Weird mouse problem Linux Mint [closed]

I have linux mint 17.1 cinnamon 32bit. I installed these packages lxde lubuntu-core lubuntu-icon-theme lubuntu-restricted-extras.I selected lightdm as defaut. After that I log off and log in on ...
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5answers
11k views

Unable to start lightdm but can startx

I am trying to make my own Live USB and I have successfully generated an ISO file with a newly installed, configured and customized Xubuntu 12.04 LTS installation. My problem is that, no matter I ...
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2answers
450 views

How can I use custom wallpapers for the login screen?

I recently Installed 12.10 version and I loved it! But the there's something weird with Wallpapers. As long as I use a wallpaper from the /usr/share/backgrounds folder (I use the "appearance" dialog ...
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2answers
5k views

Intel Haswell strange graphics and boot issue

I build a new system with a Core i5-4570S CPU and I use the internal graphics card. I can Install Ubuntu 13.04 without problem and everything seems to work fine, but during boot and when I turn the ...
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4answers
16k views

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

I have no /etc/lightdm/unity-greeter.conf file. but there is /etc/lightdm/lightdm.conf and /etc/lightdm/users.conf but there isn't a background=path/to/image line in either of those files. Related: ...
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2answers
6k 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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1answer
17 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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0answers
181 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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9 views

How to get Plasma Next option in Login

I installed Plasma Next on Kubuntu 14.10 and chose lightdm. Upon restart I'm not getting option to chose KDE Plasma Workspace/Unity/Plasma Next as my Desktop Environment. It directly enters Unity. ...
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20 views

Errors with Encryption Keyring and X when Booting in Ubuntu 14.04

I am running Ubuntu 14.04 and I know all of my passwords, but I'm having trouble logging in and error messages I've Googled have not led me to a solution. When I came home the desktop on my laptop ...
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1answer
161 views

fix “The system is running in low-graphics mode” error without internet

I'm very sorry for asking about this error in another question but all the solutions in here require for you to have internet. I only have wireless internet and when I am in that console the internet ...
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2answers
231 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
28 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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3answers
1k views

How can I make a Multiseat with Xephyr?

I'm trying to use multiseat with Ubuntu, but I can't make this work. I've read a lot of "how to", and the most of them are about doing a multiseat with some distro with GDM2, or KDM. But, I'm using ...
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0answers
63 views

nvidia and intel low-graphics mode error

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

Restore notification style in Unity after installing Lubuntu

I installed kubuntu-desktop on my 14.10 ubuntu system. I managed to use update-alternative to set plymouth, and configured lightdm to get the default ubuntu look. The only problem that remain is that ...
2
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1answer
245 views

Is there a way to stop KDE 4.10 from suspending at the login screen on laptop close?

I'm running a fresh install of Kubuntu 12.10 with KDE 4.10 installed from the Backports PPA. This is my first time using KDE, so I'm still learning where to find everything. I've got KDE's Power ...
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0answers
41 views

Could not write bytes : broken pipe Ubuntu 12.04

I am getting could not write bytes : broken pipe error when boot my laptop with Ubuntu 12.04. I know there are a ton of question similar to this here but none of which I tried solved my problem. I ...
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0answers
27 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 ...
2
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2answers
1k views

Default login screen missing, how to revert?

I installed some KDE stuff by mistake. After removing it, my login screen now is quite different; has a white background and the user icons+input appear in the centre. [note that I have tried sudo ...
66
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16answers
97k views

Ubuntu gets stuck in a Login Loop

My problem: As you can guess my Ubuntu is stuck in a login loop when trying to enter my desktop. Means the screen gets black and soon after that the login screen comes back. I'm a Ubuntu Newbie so if ...
9
votes
1answer
1k views

How to get suspend when idle if no user logged in (lightdm)

I can't figure out how to get Ubuntu 11.10 to suspend when idle from a lightdm login screen. I've found methods to do this from gdm, but even those reference configuration files that aren't present in ...
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3answers
4k views

Cannot pass the login screen after upgrade to 12.04 from 11.10

I just performed the upgrade from Ubuntu 11.10 to Ubuntu 12.04 LTS. The updater downloaded all packages but a few ones that the system said were already installed. When asked for it, I chose to ...
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1answer
25 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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50 views

How can I disable the lock session (not just in a specific gnome-session but for anyone who uses a certain machine)

I have several machines running ubuntu 14.04 LTS and there are a lot of users that log in and out of them (not local users). I wish to prevent any possibility of a user locking the screen in a ...
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2answers
20k views

How can I make LightDM the default display manager?

I have LightDM installed and can start it with sudo start lightdm. But at boot, GDM is still the default. How can change this so LightDM is loaded automatically at boot instead of GDM?
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1answer
40 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 ...