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

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The system is running in low-graphics mode?

First off, I've searched and tried every method I could find the last ~6 hours. Nvidia 750 TI graphics card. Running in VMWare. The system ran fine for a few days and out of nowhere I received a ...
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77 views

Laptop does not like external monitor

Recently, I installed Ubuntu 15.04 on my machine and got everything running about as it should, except for one thing: my external monitor can not be set as default. Every time I plug in my external ...
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1k views

Minimal Gnome install on Ubuntu Mini

I am trying to get a very minimal Gnome installation on 64bit Ubuntu mini. I don't want the bloatware of a regular install of Gnome. I tried this: sudo apt-get install lightdm gnome-terminal synaptic, ...
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Window manager (?) or anything similar is broken [duplicate]

When I booted today, I had a normal login screen but as soon as I logged into my account (admin), the mess began. My system: Ubuntu 15.04 with Unity, kernel 3.19.0-22 My symptoms: No panel No ...
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1answer
366 views

Ubuntu 14.04.2 login screen loop back

I have a login screen loop back problem, when I punch my password I get back to the login screen again. I have tried to login with LightDM CI screen by Ctrl+Alt+F3 but there when i put in the username ...
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1answer
352 views

How to configure ubuntu 14.04 to run Icewm as default desktop display Manager

How to configure ubuntu 14.04 to run Icewm as default desktop display Manager. which files to Configure to do this
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117 views

lightdm-webkit-greeter issue

I am using Gnome Ubuntu 14.04 LTS. I used this command; sudo apt-get install lightdm lightdm-webkit-greeter xserver-xephyr I install LightDM and LightDM-webkit-greeter and bevel (lightdm theme), I ...
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1answer
282 views

Gdm with nvidia-331 and nvidia-prime causes a black screen at boot

I'm on an Asus UX51vz laptop, which has RAID0 SSD's and an nvidia 650M graphics card. I installed lubuntu instead of ubuntu-gnome because lubuntu still has a RAID0 compatible alternate install ISO. ...
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51 views

side effect between isc-dhcp-client, network speed and lightdm

I have 300 computers on running on 14.04 64bits Ubuntu, i use isc-dhcp-client to get ip and name from my dhcp server. I encounter the classic problem with lightdm "your system is running in ...
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1answer
320 views

Install nvidia geforce gt 845m driver on ubuntu 14.04.02 lts

I am trying to install the driver on my asus n551jq, under ubuntu 14.04.02 lts. My steps are: sudo add-apt-repository ppa:xorg-edgers/ppa sudo apt-get update sudo apt-get install nvidia-337 ...
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how to change ubuntu 15.04 lightdm greeter wallpaper size?

i was wondering if i can change the size of the background i have selected in lightdm.conf after installing lightdm-gtk-greeter sudo apt-get install lightdm-gtk-greeter then editing the ...
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38 views

Can't auto-login with Lubuntu

I have tried to make autologin work with Lubuntu but for some reason the thing is not working. Just to be cautious I used both procedures described here (for LXDM and LightDM), but neither work. I am ...
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273 views

Drop to a console after boot, and then start the GUI when required

I am running Ubuntu 14.04 with Gnome as the Desktop Environment. When I boot, I want it to be quick, and drop into a shell. I'll enter my username and password, and if I require, I will start the ...
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2answers
107 views

lightdm doesn't show up

whenever I reboot the lightdm display the mouse cursor but it doesn't show the login form. However if I type my password I login into my account. This hapens since I've moved to kubuntu 15.04 (upgrade ...
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1answer
515 views

Stuck at loading screen after removing LightDM

I removed unity and installed cinnamon on my Ubuntu 14.04 LTS, everything was working fine. I recently removed LightDM in favour to the lock screen of cinnamon using this method How to uninstall ...
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52 views

Everything except GUI is black

Since I installed Ubuntu 14.04 on my laptop, I have many problems on it (that I don't have on Debian 8) Indeed, when I switch to TTY with CTRL + ALT + F(1-6), I get a black screen, same problem when ...
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73 views

Messed up Lightdm , Help

I was playing with lightdm customization and i think i have completely messed it up. I added a few themes and tried switching themes by editing the webkit conf file and after a restart lightdm won't ...
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47 views

Logging in to Ubuntu without a Display manager

So I want to login to my system without a display manager(lightDM). How would I go about doing this? or Could removing lightDM break the system? My current WM is i3. so i3 specific instructions would ...
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339 views

Lightdm\Pantheon-greeter conf and packages

I've been reading the other questions and none explains it simple enough. Must I have lightdm installed with pantheon-greeter? Which file am I to use if I wish to use pantheon-greeter? ...
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1answer
91 views

Restoring lightdm conf files after some mods can leave remnants that alter behaviour?

I observed a strange behaviour on my new XUbuntu installation. ==== Background: I had the intention of experimenting two different remote desktop solutions (one at a time); the local computer ...
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3answers
627 views

Apply display settings to all user accounts?

I spent some time getting my settings correct for multiple monitors, and that is working fine when I am logged in, but is not right at the login screen or for other users. How do I set the display ...
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2answers
218 views

Minimal Display Manager sought

After getting a 3G modem for my laptop, I've started using Network Manager to manage my connections, and I quite like it. However, it is slightly annoying to have to be root to make any changes, ...
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1answer
9k views

Ubuntu 15.04 boot hangs on “Starting light display manager” after updates

I have recently taken the plunge to Ubuntu, and purchased the Dell XPS 13 Developer Edition. My first order of business was to wipe the "Dellbuntu" that came pre-installed and do a fresh install of ...
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488 views

VPS install xfce and teamviewer

Hi guys I am playing around with some VPS's but I am not getting xfce with teavmviewer to work. I installed xfce with apt-get install xfce4 an installed teamviewer from ther website. Thats the ...
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1answer
649 views

Lightdm won't start after upgrade from 14.10 to 15.04

After upgrading from 14.10 to 15.04, lightdm won't start. Failed to start lightdm.service: Unit lightdm.service failed to load: No such file or directory. I have a HP Spectre x360 with Intel Core ...
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57 views

Xserver problems

using ubuntu 14.04 and want to configure xserver manually. I stopped lightdm and then executed X -configure It created an xorg.conf.new and i just movd it to /etc/X11/xorg.conf (created a new file, ...
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Problem After Upgrading to Ubuntu 15.04 ( deal with any system changes..P link was shut down )

I have laptop Sony VAIO with ubuntu 14.04 i upgrade it to 14.10 then after that i upgrade it to 15.04 .Upon the upgrading complete and the laptop restart ,A blank screen appears and at the end of it ...
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1answer
180 views

Stuck on splash screen, does not progress to login manager

My login manager stopped loading, for no apparent reason, instead tty7 was a black screen I could type into but with no effect. I tried several variations of service lightdm restart service sddm ...
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2answers
146 views

Numpad disables after logging into unity

I just setup Ubuntu 15.04 on my Asus G74Sx laptop. This laptop does not have a physical NumLock key. My Numpad works fine in Windows 8.1, the SSTYs, as well as lightdm (I can enter numbers via the ...
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2answers
726 views

Use of Yubikey Neo for login 2FA and lock screen

I want to use my Yubikey Neo to login to Ubuntu 14.04. In addition, it would be convinient if the screen is locked automatically everytime I unplug the Yubikey.
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4answers
3k views

14.04 unity does not start after login screen

In Ubuntu 14.04, after arriving at the lightdm login screen and entering my password, the screen briefly disappears, but then comes back to the login screen. When going to terminal with ALT-CTR-F1 and ...
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37 views

Ubuntu lightdm login issue in 12.04

We recently installed Ubuntu 12.04 LTS 64bit Desktop OS on Dell PC. After installing certain packages on it, we restarted the PC. We are unable to login in GUI but able to login via console. You may ...
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392 views

open fvwm desktop in ubuntu14.04

could somebody explain how to set the unity-greeter select fvwm on ubuntu 14.04? In 12.04 it was easy, you just installed fvwm and it magically showed up as one of the options on the greeter screen. ...
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3answers
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14.04 login loop after cuda installation

I've installed cuda 7 on my 64bit ubuntu 14.04 using this guide. After disabling nouveau drivers following this and rebooting, I needed to disable graphics with Ctrl+Alt+F1, login, and then stop ...
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201 views

About the 'who' command & it's Output on '14.04 TrustyTahr'

I have a question that arose in my mind after upgrading to 14.04 TrustyTahr from 12.04 PrecisePangolin. The question pertains to the 'who' command, and its output. On previous editions of Ubuntu the ...
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1answer
323 views

Lock Screen from root shell

I try to set up a script to lock my screen when I unplug my Yubikey. At the moment I am stuck with the correct way to send the command to lightdm. That were my tries: smiddy@3000-N200:~$ sudo su - ...
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2answers
324 views

ubuntu 14.04 login keyboard stuck on english. I want french keyboard

I installed Ubuntu 14.04LTS on a french computer (AZERTY keyboard, see below) but I selected english keyboard while installing Ubuntu. Then change my keyboard parameter like this: and here is my ...
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3answers
43 views

Uninstalling xubuntu-desktop help login

i installed xubuntu-desktop via the code below : Sudo apt-get update && sudo apt-get install xubuntu-desktop But after installing, a few functions did not work such as the system properties ...
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87 views

How to start a new X windows system in other display in Ubuntu desktop 12.04

As we know, in ubunut desktop, When you power on the system, it will start a Unity Desktop using lightdm in display :0. And you can operate the system in tty7. If I want another Unity Desktop in ...
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3k views

Cannot Log In to Gnome 3.16 Dekstop

I have installed Gnome 3.16 on my Ubuntu 15.04 (previously updated from 14.04) via: sudo add-apt-repository ppa:gnome3-team/gnome3 sudo add-apt-repository ppa:gnome3-team/gnome3-staging sudo apt-get ...
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1answer
244 views

Remove KDE greeter and install lightdm

So I had installed multiple desktop environments, later removing them, however the greater was still there, in attempt to remove the greeter (KDE), I have actually removed lightdm. So how would I ...
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313 views

Login Loop on lightdm but not gdm

One of my user accounts is getting a login loop on lightdm but not on gdm. Does anyone know why this might happen and what I may be able to do to log on to the account using the lightdm display ...
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1answer
241 views

Blank screen with blinking cursor after running xdiagnose

I have had this problem twice in a row trying to follow these instructions: Solution for low screen resolution in Ubuntu 14.04, Ubuntu I have installed Ubuntu 15.04, and had everything running okay ...
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2answers
113 views

Why has lightdm-remote-session been removed from Ubuntu 15.04?

Straightforward question, really. I must admit I haven't used it much, but just recently had started doing. Now it's not in the repositories. What's the thinking behind that?
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2answers
1k views

How to start Pantheon from the command line

Long story as to why I've chosen to go this route, but I've installed Ubuntu Trusty without a desktop, and then installed pantheon, pantheon-shell, pantheon-greeter and elementary-desktop packages. ...
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1answer
257 views

How to make indicator-sysmonitor as a default indicator on the login screen

The Ubuntu 14.04 currently have at the top right corner these indicators shutdown,lock button, calender time details, battery details, Input format (English) as the default indicators. Is it possible ...
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How can i set different wallpapers for Ubuntu 15.04 login and Desktop

This has been bothering me very much. i have memory that Ubuntu 12.04 had this configuration? am i wrong? finally, is it possible for the login screen to have different wallpaper from the desktop? is ...
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1answer
2k views

Shutdown just logging out [duplicate]

I have an older hp pavilion all in one pc and after upgrading to 15.04 whenever I tell the computer to shutdown while in unity (haven't tried other DEs) it goes to the login screen as if I'd only ...
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Ubuntu 12.04 freezes and does not always let me switch to text-based to restart lightdm

I switched to an old laptop after my two main ones stopped working and this one frequently freezes. At times it will allow me to switch to text-based (CTRL+ALT+F1) and restart lightdm (which is ...
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Xorg and issues

Today I've tried to install the SixAxis controller using the official wiki page. It succeeded until I removed the harddrive and this happened ...