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

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Fully encrypted system boots to Terminal login instead of GUI

When I switch on computer, because I have it encrypted, it always first asks for my passphrase in the GUI. I enter the phrase, then still in the GUI it normally asks for my password, and goes to the ...
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360 views

Ubuntu 14.04 LTS fails to boot into GUI

I've been using Ubuntu 14.04 desktop for about 6 month when the system locked up. Couldn't switch to another session or kill any processes, etc. only the mouse was responsive. Before it locked up I ...
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120 views

How can I start LXDE right after installing it?

On a fresh Ubuntu Server 15.04 I ran (from a Vagrant provision script) apt-get install lighdm lxde After this, I expected service lightdm start to display the session opening dialog. But ...
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518 views

How to change default window manager to Lubuntu from openbox?

After crashing my Lubuntu 14.04, my PC shows me an "ugly" login-window and then loads a desktop environment (or more precise probably a window manager) that has a grey background and a context menu ...
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98 views

Ubuntu 14.04 Login Loop - need to create new user after every reboot?

I'm running ubuntu 14.04 on a virtual box within a windows 8 host machine. I've had the misfortune of stumbling upon the dreaded ubuntu 14.04 login loop after a sudo apt-get upgrade command, and have ...
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100 views

Cannot install lubuntu-desktop because of lightdm-gtk-greeter

It appears as if my lubuntu-desktop was deleted from an autoremove. Now I try to install the package via terminal. When I do so it says that I need to install lubuntu-default-session because of ...
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32 views

Start X After Root Autologin Via Mingetty

I am currently running Lubuntu 14.04 x86_64 on an old Pentium 4 desktop destined to be a home theatre PC. As a consequence of multiple failures while trying to configure LightDM to autologin I ...
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2answers
492 views

Problem with nVidia GPU, not working lightdm

I'm trying all day to get my nVidia GT650M working, but without success. I tried to switch graphics card in nVidia Prime, but after logout screen goes black and Light Display Manager won't start, ...
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106 views

Ubuntu 15.10 Desktop x86-64 Enabling manual login leads to “The system is running in low graphics-mode”

EDIT: If you want to see the pictures properly embedded, look at my post at an other forum (was advised to ask here again): http://unix.stackexchange.com/questions/253050/ubuntu-15-10-desktop-x86-64-...
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126 views

Ubuntu 15.10 - Change loading screen [duplicate]

Well, I´m trying to change that awful purple screen with the white/orange dots on my Ubuntu 15.10 while it is loading. Not the login Screen or background. That is already solved. I would like to see ...
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2answers
110 views

mdmsetup returns exit status 1

I'd like to install and use mdm over lightdm with Cinnamon. I've installed mdm, but gksudo mdmsetup just opens a dialogue requesting authentication, then immediately exits with code 1. There's ...
3
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1answer
457 views

How can I remove AbiWord?

I've just installed Lubuntu, and then I threw Cinnamon on top of it. Every time I log into any session: gnome, cinnamon, lxde, abiword opens immediately, as if I had told it to. I'm not a fan of this ...
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1answer
319 views

How to purge SDDM/Plasma completely

I recently installed KDE just to give it a go. I didn't really like it, so ran sudo apt-get purge kubuntu-desktop plasma-desktop. That seemed to fix it initially, after two reboots everything was back ...
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29 views

lightdm: part of screen is missing

I have a problem with my pc that whenever lightdm comes up, one side of the screen is missing. I though it was the resolution of the image and it does not scale properly to the screen so I spent ...
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0answers
138 views

Unity Greeter Background NOT Changing!

So ever since I upgraded to 15.04 from 14.04.. The unity greeter started using the wallpaper from my unity desktop as its background.. I have tried using ubuntu tweak but it blinks my custom ...
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0answers
94 views

Desktop not responsive after ubuntu-gnome-desktop installation (Ubuntu 15.10)

In order to use gdm instead of lightdm I followed the instructions from this post I could then use gdm but my desktop (meaning the background area) is not responsive anymore and shows the login ...
3
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1answer
220 views

Two different login/lock screens

I have Ubuntu 15.10 installed and when I first start my computer it gives me the really nice looking ubuntu lightdm login screen but anytime I lock the computer I get the really nasty looking gnome ...
6
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1answer
79 views

Lightdm greeter - theming of option-button

I try to theme the unity lightdm greeter and I've succeeded in doing so by looking at the source code and the Ambiance .css files. One thing I'm not able to theme however is shown in this short video, ...
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191 views

Ubuntu 14.04 LTS login loop both in unity and gnome

after uninstalling a not-working Chinese input method, I have been experiencing a login session loop problem. After I type the correct password for the login, the screen blinks and comes back to the ...
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0answers
259 views

How to get back Unity Greeter? Replace MATE Greeter?

So I installed Ubuntu Mate desktop environment for my 14.04 LTS (Trusty) and I am really liking it but Mate also replaced the Unity greeter which I want back... I searched about how to get back the ...
0
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1answer
38 views

Lightdm freezes on startup if wait for GRUB

I am on Ubuntu 14.04 on this hardware (with no external/proprietary driver needed). These are the enabled official repositories (all but proposed) and these are the external ones (Google Chrome, ...
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76 views

GNOME desktop environment not starting

I recently moved from Unity to the Ubuntu MATE desktop environment. I was trying to install the GNOME desktop environment. I followed the following steps: sudo apt-get install gnome-shell sudo apt-...
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0answers
13 views

How to get back Unity Greeter? [duplicate]

So I installed Ubuntu Mate desktop environment for my 14.04 LTS (Trusty) and I am really liking it but Mate also replaced the Unity greeter which I want back... I searched about how to get back the ...
0
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1answer
75 views

Some desktop environments don't work anymore after system changes (reusing `/home` in new install)

After some reinstallation/configuration/partition resizing work (I really can't say where the point of failure was, but see below for details), I ended up with unity not working anymore, a situation ...
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1answer
330 views

Ubuntu 15.10 login loop for all users

On a previously working install of Ubuntu 15.10, I rebooted and am now unable to log in to Unity with any users (main account or guest). I can log into my shell in another tty. I've tried all the ...
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124 views

Ubuntu 14.04 login loop, onboard and update manager does not start as well

.Xsession errors has the following etc/X11/Xsession.d/20desktop-profiles_activateDesktopProfiles: line 31: $ERRFILE: ambiguous redirect Script for ibus started at run_im. Script for auto started at ...
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38 views

Guest login support in lightdm webkit greeter

I'm having trouble getting the guest login option to work in the Webkit LightDM greeter, which is a shame as it's otherwise a superb tool for developing custom greeters. Looking through the source on ...
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1answer
96 views

Lightdm fails to login and redirects

After running a routine update and rebooting, my computer running Ubuntu 14.04 is now completely unusable. The lightdm screen comes up and accept my password, but it immediately redirects to itself. ...
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82 views

Can I connect to a new wireless connection before login?

I am wondering whether it is possible to connect to a new (not saved) wireless connection before login in as a user. I have some lab PCs and the idea is that the students will use their credentials ...
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2answers
198 views

Why is my mouse invisible on ubuntu 14.04?

I'm running a clean installation of 64-bit Ubuntu 14.04 with dual monitors. When I start up the mouse is invisible on the login screen and after logging in. Relogging in does not work. I've googled ...
0
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1answer
247 views

“Stopping CPU interrupts balancing daemon” after uninstalling LightDM

I'm a rather new Linux user and tried making my virtual server login automatic and while doing so I installed lightdm. I noticed that I got the graphical UI on boot but couldn't log in, so I deleted ...
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84 views

How to change greeter ubuntu

i have installed kubuntu-desktop in my Ubuntu 14.04 and its awesome im liking the new look. i can switch between unity and kde in lightdm unity-greeter screen , but how to replace lightdm with kde ...
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2answers
479 views

Ubuntu 15.10 random lightdm crash

Recently upgraded to 15.10 (from 14.04 I had to wipe everything to upgrade because of an interrupted initial upgrade from 14.04 to 14.10), and after working out the kinks and getting my settings back ...
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374 views

Must manually restart lightdm to have it appear

I recently did an Ubuntu command-line install on my work laptop, then install Mate (core) and lightdm. I have an Intel graphics driver. When I turn on my computer, it boots to a black screen. Pressing ...
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16 views

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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169 views

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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11 views

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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43 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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68 views

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
86 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
237 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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0answers
147 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+...
0
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2answers
284 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
61 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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0answers
2k 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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0answers
45 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: ...
0
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1answer
64 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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0answers
82 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 ...