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

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Set Theme for Session

I'm looking into setting up a OSX theme on Ubuntu 14.04, but I do not want to modify the default Ubuntu session. I found this and this on how to add a custom session to lightDM. But I cold not find ...
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chown: cannot access '/var/lib/lightdm/.gvfs' permission denied

For I can't login to the desktop, I searched for a solution and find a way that reinstall lightdm, so I tried to reinstall lightdm, but returned a message: chown: cannot access '/var/lib/lightdm/....
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Black screen when open session [duplicate]

I try to open my session on Ubuntu 14.04 LTS. I write my password and press enter, then the screen becomes black and returns to the login screen. When I read the auth.log file, I obtain this: Dec 2 ...
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40 views

LightDM doesn't display topbar and toolbar for user

I had my laptop running some rsync stuff over night. Unfortunatelly, I somehow forgot to plug it. When I started the laptop today every thing seamed fine. It booted, there was the loginscreen and I ...
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lightdm.conf command not echoing to file

# LightDM - light Display Manager # # The display manager service manages the X servers running on the # system, providing login and auto-login services # # based on gdm upstart script description "...
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1answer
76 views

Wrong permissions of /dev/null (XUbuntu 15.10)

After running update today and rebooting the OS lightdm would not start. After some debugging I noticed that /dev/null (and some other /dev files) do not have adequate permissions (compared to another ...
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1answer
218 views

samba4 nslcd lightdm and pam_mount

I'm stuck with my setup and hoping for some help. I've setup an AD with Samba4 and nslcd as nss both on the server and the clients. I'm aware that Samba does not recommend running the AD and ...
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135 views

Back to the login screen immediately after login

After login the the default gnome desktop, there is nothing but only a background picture. Then after a flash of a black screen, it returns back to the login interface. I changed to tty1 by Ctrl+Alt+...
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2answers
236 views

How to restart X server? [duplicate]

First of all I should say that I have very limited computer knowledge so go easy on me. I have Ubuntu 15.10 installed on my laptop and I was trying to to install the driver for the Nvidia video card ...
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1answer
57 views

Disabling Guest account bash script

Hey I'm working on this all purpose script to tighten a ubuntu computers security and one of the things in it is to disable guest account through lightdm.conf. The way my script is setup or at least I ...
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1k views

How to configure login screen resolution in Ubuntu 15.10

i'm using ubuntu 15.10 64bit. I have a problem with the login screen. I can't see the login screen because login screen's resolution setting is big for my monitor. My gpu card can't read my monitor's ...
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42 views

My Ubuntu Machine 15.04 is very slow at startup. Please help

Following output in dmesg seems suspicious: [ 5.343655] systemd-sysv-generator[197]: Overwriting existing symlink /run/systemd/generator.late/vboxdrv.service with real service [ 13.087620] wmi: ...
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59 views

Ubuntu runs in Low Graphics mode after modifying Lightdm.conf

I wanted to disable the guest login in my Ubuntu 14.04, so I opened the lightdm configuration file using: sudo gedit etc/lightdm/lightdm.conf But the file was Empty (There were NO lines like [...
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29 views

Change defualt login session ubuntu 14.04.3

I downloaded steam-login (a nother desktop session for steam) but I want ubuntu to automaticly choose steam-login on the login page (after I turn on my pc).I tried editing the lightdm.conf.d and so on ...
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71 views

Why is Xnest not listening on 6001

I cant work out why when I run Xnest -ac :1 it does not listen on port 6001. I need this specific scenario so that on other machines I can throw an xterm screen back. I have my configuration so that ...
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23 views

Lightdm will not install, whole system broken

I installed Lubuntu the other day and all was great until I exited i3 and the screen was black with a little white line (like a terminal but typing commands didn't work). All that happens now is the ...
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198 views

Ubuntu 15.10 Blinking cursor problem after qemu installation

I have been using 64-bit Ubuntu 15.10 along with Windows 10 since it was released. 2 days ago I wanted to install qemu. At the beginning it needed an external library (glib 2.22). I downloaded glib 2....
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46 views

Limit a user to a single app that starts on login (14.04) [duplicate]

I have a system that I would like to limit a specific user to a single app that will autostart when he logs in. I don't see any way to do this with the toolbar/launcher active but I have seen ...
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93 views

Lightdm not working properly in Ubuntu 14.04.3

Recently I installed ubuntu-gnome desktop and then purged the same after trying and I have chosen my default desktop manager as lightdm and there is nothing like gdm as I have purged it also.The ...
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49 views

I cannot login to ubuntu14.04. GUI

While attempting to install ubuntu server on VMware and login on terminal; I did not face any issue. but I did not have a GUI interface there... hence, I did the following... installing lightdm ...
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Early adbd on ubuntu touch device

I need to run adbd at early boot stage (before lightdm has started) on Ubuntu touch device (Nexus 10). As far as i know, adbd is launched after login screen password is entered. In upstart scripts i ...
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165 views

Lightdm won't start after installing CUDA 7 drivers

I recently installed CUDA 7 on ubuntu using a downloaded .run file. After the installation, I found that not only was lightdm not starting, I also couldn't start lightdm usingsudo start lightdm. (...
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1answer
2k views

Black screen after 15.10 upgrade, not even getting into tty1 anymore

I'm using Ubuntu 15.04 and upgraded to 15.10 tonight. After restarting I'm getting a black screen with a flickering message from my window manager. First I was able to get into tty1, so I ...
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64 views

Starting Light Display Manager after Upgrade

My problem is the same as the one in this and I've tried the fix, but after going into the virtual console, I can't log in. I keep getting "Login incorrect." I've tried fixing any packages through ...
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237 views

due to lightdm-gtk-greeter's broken permissions, user wallpaper is not shown

I am on Ubuntu 14.04.03 32 bit platform. The day before while installing udev from source it messed up permissions in my system. I fixed some of the permissions and I managed to login. I noticed that ...
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164 views

LightDM doesn't want to start in test mode

I have a problem where LightDM doesn't start when run in test mode lightdm --test-mode. After I ran the same thing in debug, this was the output: [+0.00s] DEBUG: Logging to /home/vilsol/.cache/...
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49 views

I can not login to gnome-cairodock session after manually installed udev (systemd-218)

I am on Ubuntu 14.04.3 32 bit platform. Last night I wanted compile and install an application called qtcam according to this guide https://github.com/econsysqtcam/qtcam/blob/master/INSTALL I thought ...
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29 views

Custom XSession script fails

I made a custom Xsession script in ~/.xinitrc using the following tutorial and here is my .xinitrc file : #!/usr/env bash mate-panel & plank & exec gala I have also made a lightDM launcher ...
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2k views

LightDM & SDDM fight on greeter screen

I had installed Kubuntu 15.04 sometime ago. I upgraded to 15.10, things were going fine till I added ubuntu-desktop to use Unity DE. When booting with systemd, on startup or login, I get black or ...
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52 views

Turn off workspace switch-over display

Using LightDM and wmctrl to set up workspaces and switch between them. How can I deactivate the screen which is very briefly shown when switching between workspaces?
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65 views

ubuntu 14.04 ldap client gnome-session hangs

I'm trying to configure ldap client login on ubuntu 14.04. I followed these steps and I can login using tty. Homes are correctly mounted. When I try to login via graphical interface the screen hangs ...
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323 views

Unbind GPU from Radeon drivers without restarting lightdm

I use a bash script to rebind my GPU for KVM PCI passthrough, but it requires me to stop lightdm to unbind/bind it from the radeon drivers. If I do not stop lightdm, the entire system hangs after a ...
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49 views

set gamma when lightdm starts

I want to set the following when booting lightdm: xrandr --output eDP1 --gamma 0.8:0.8:0.65. I have tried: Creating a startup application (works, but only after loggin in. setting display-setup-...
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99 views

Changing my desktop enviroment to Gnome 3 [duplicate]

I recently installed Ubuntu 14.04 on my computer and now I want to change my desktop environment to Gnome 3. I have seen many methods to install Gnome 3 but now I am confused which method should I ...
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38 views

Ubuntu 14.04 sidebar gone and so is console (attempted all previous methods)

Okay before you vote me down i must start by saying that ALL methods found on ask ubuntu did not work for me. Right now im logged in as guest where everything works just fine. However sadly my main ...
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294 views

lightdm won't start after bumblebee install

On an Asus rog with GT960M graphic card running Lubuntu 15.10, I installed bumblebee (https://wiki.ubuntu.com/Bumblebee) which rebooted fine. Then I updated the nvidia driver by sudo apt-get nvidia-...
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34 views

Autologin not working, associated with fonts folder

Ubuntu 14.04.3, autologin worked fine. But I created some font collections (~500 fonts) by font-manager (from ppa:font-manager/staging). Font-manager copy all added fonts to ~/.local/share/fonts/. And ...
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49 views

How can I use LXC to create a working copy of the Ubuntu Development Branch on my system?

What I mean is that the unity8-lxc package allows one to log into a working Unity Next distribution (rather than the unity8 package from Trusty) from LightDM. Is there a way of using LXC to do this ...
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182 views

A few problems after upgrading to 15.10 [closed]

First off, let me say, I don't believe this to be a duplicate as I've tried everything I can find. Last week, I started the upgrade process to Ubuntu 15.10 from 14.04. I did the upgrade to 15.04, ...
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121 views

Ubuntu is terribly slow at logging in and initializing the greeter

I installed ubuntu and it takes a long time until I'm able to type my password; the login-screen/greeter takes a high amount of time to let me type in something. The thing I see before is the greeter ...
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258 views

Boot loop when installing 14.04 under Hyper-V (Windows 10)

Similar to issues described here: Ubuntu gets stuck in a login loop and here: Ubuntu 32bit on Hyper-V Keeps Asking Me Password I am getting into a boot loop when trying to run Ubuntu 14.04.3 (fresh ...
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2k views

Change the background of the login screen

I installed Ubuntu Studio 15.10 and upon that: sudo apt-get install ubuntu-desktop Now on the login screen, I have the default brownish Ubuntu default background. I tried this as root: sudo ...
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Login loop revisited

I'm using 14.04 LTS Desktop on a Lenovo laptop and it's been working great until this morning. After a reboot I encountered the login loop, where you log in and immediately return to the login screen. ...
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1k views

Select xfce4 desktop environment with autologin in Ubuntu 14.04.03 LTS

I am trying to select xfce desktop environment upon boot up with autologin enabled. I created a config file in /etc/lightdm/lightdm.conf.d/50-myconfig.conf with the settings as below: [SeatDefaults] ...
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2answers
129 views

Documentation for theming of unity-greeter

There are a lot of great gtk-themes out there for unity/gtk. However very few of them do have support for the unity-greeter. I want to work on them however I were not able to find an (official) ...
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1answer
7k views

Ubuntu 15.10 boot hangs when starting Lightdm

I failed to read the release notes before upgrading to 15.10, I still had fglrx drivers installed. When rebooting after the upgrade it would hang indefinitely in the splash screen, I couldn't open a ...
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131 views

Kubuntu 15.10 stuck on boot logo

Since today Kubuntu 15.10 won't boot automatically any more. When I enter tty1, I get to the root console and can start the Plasma desktop manually by entering "startx".
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2k views

Ubuntu hangs on Starting light display manager on bootup

I've been going at this for about 10 hours, and I can't find a solution to this problem. I recently updated to 15.10, and now when I boot up, It gets stuck on "Starting light display manager" part ...
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Login loop with new install of 14.04.03 (twice) on Acer Inspire 5742ZG with AMD Radeon HD6370M graphics

Enter correct password, takes it, screen goes blank then the console messages appear : Starting LightDM display manager Stopping Send an event to display plymouth is up Then it goes back to the ...
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87 views

Lightdm broke, have to manual login via bash

I had a problem with Lightdm, each time I put my pc to sleep and wake up, it showed up no user, but asked for password and none worked. And I don't know if it's dumb, but I also ran locate lightdm | ...