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

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Crossfire Resets When Lightdm Restarts Ubuntu 15.04

So I had Crossfire running on 14.04, but I decided to update to 15.04 and now it's acting strange. I've gone through the typical steps of commenting out everything in /etc/init/gpu-manager.conf, and ...
1
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2answers
24 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 ...
147
votes
39answers
433k views

How to fix “The system is running in low-graphics mode” error?

Note: This is an attempt to create a canonical question that covers all instances of "low-graphics mode" error that occurs to a user, including but not limited to installation of wrong ...
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2answers
33 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 ...
-1
votes
1answer
49 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 ...
0
votes
1answer
195 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 ...
-1
votes
1answer
15 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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0answers
15 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 ...
0
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0answers
16 views

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 ...
0
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5answers
928 views

ubuntu 14.04 login loop problem

My Ubuntu 14.04 is stuck, when trying to login my desktop. Means the screen gets black and soon after that the login screen comes back. I followed all steps in Ubuntu gets stuck in a Login Loop Even ...
0
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0answers
13 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 ...
0
votes
1answer
6k 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 ...
5
votes
3answers
143 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 ...
0
votes
1answer
18 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 ...
0
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0answers
15 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 ...
4
votes
2answers
6k 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 ...
0
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3answers
44 views

Ubuntu 14.04.2 Server - fresh install - Id like a desktop please, no sugar or milk with that either [closed]

I am running a freshly installed Ubuntu 14.04.02 Server on my laptop, mainly used for programming etc. I want as light as possible setup without any bloat (hence the server install). I'm not a fan of ...
0
votes
3answers
472 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 ...
17
votes
6answers
48k views

After logging in, there's a black screen and my cursor, nothing else! in Ubuntu 12.10

I've been using Ubuntu(12.10) for a long time, and recently, my Ubuntu went through yet another update. The whole update prompt showed up, following by a password prompt, and finally the good ol' ...
0
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0answers
22 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 ...
8
votes
3answers
14k views

No password asked at login screen just start session button with LightDM

When I first installed Ubuntu I choose NOT to ask me for a password at login. That was ok for that moment cause it didn't ask me any password at login. But now I want to be asked for a login password. ...
0
votes
1answer
27 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 ...
0
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0answers
17 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 ...
0
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0answers
20 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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2answers
186 views

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 ...
59
votes
16answers
36k views

How do I disable the drum beat sound on the login screen?

I would have expected System ▸ Administration ▸ Login Screen ▸ Play login sound to control this, but unchecking it does not prevent the drum beat sound from playing.
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2answers
48 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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4answers
4k views

How Do you set up numlockx at startup in ubuntu 14.04

In ubuntu 13.10 in order to install numlockx you had to run: sudo apt-get install numlockx After you install numlockx you had to run: gksudo gedit /etc/lightdm/lightdm.conf At the end of this file you ...
3
votes
0answers
110 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 ...
0
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0answers
39 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 ...
2
votes
4answers
113 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 ...
0
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2answers
43 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 ...
99
votes
23answers
139k 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. When I login, the screen gets black and soon after that the login screen comes back. I'm a Ubuntu ...
0
votes
1answer
49 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 ...
0
votes
0answers
20 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, ...
6
votes
2answers
2k views

lightdm doesn't run the display-setup-script script

To fight with dual-monitor resolution problems, I followed the advice found in other questions here related to session- and display-setup-script. I have the following /etc/lightdm/lightdm.conf: ...
8
votes
2answers
2k views

Ubuntu 12.04 Unity: Black screen with cursor only, when external display is connected before booting laptop

Whenever I connect an external display to the DSub port of my laptop before booting into Ubuntu, something goes wrong in Unity to cause the exact same problem as described here: After logging in, ...
2
votes
1answer
29 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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0answers
121 views

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 ...
2
votes
1answer
1k views

Why I cannot shutdown or reboot from lightdm?

I am unable to reboot or shutdown from lightdm. When I click on the button "Shutdown" or "Reboot" in the pop-ups simply nothing happens. I cannot find nothing wrong in /var/log/lightdm/lightdm.log ...
0
votes
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 ...
0
votes
1answer
36 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.
31
votes
6answers
110k views

How to change the LightDM theme/greeter?

I downloaded a couple greeters for LightDM, but I have not figured out how to enable them. Is there a way to switch greeter, either by graphical or command-line method?. I do not intend to change ...
6
votes
2answers
3k views

Why runs evolution-calendar-factory?

Why runs evolution-calendar-factory? Here are some processes (created with ps aux --forest) lightdm \_ /usr/bin/X -core :0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch \_ lightdm ...
0
votes
1answer
26 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 ...
3
votes
8answers
5k views

In Ubuntu 15.04 can't do graphical log in

I have done clean install recently of Ubuntu Desktop 15.04. And I was able to log in to the graphical environment until I enabled "boot to text" like said there: How do I disable X at boot time so ...
4
votes
1answer
173 views

How to start lightdm services at startup

My system is running Ubuntu 15.04 and I've changed default boot to "text" instead of "quiet splash" by going through answer by @Bruno Pereira How do I disable X at boot time so that the system boots ...
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vote
3answers
984 views

Login Loop - unable to run unity - not Xauthority ownership but may be related to display?

All, I was trying to get VNC working, making lots of changes that I don't recall now when I discovered after a restart that I could not login to Ubuntu 14.04. I believe I authenticate ok, but get ...
0
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1answer
41 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. ...
0
votes
1answer
64 views

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 ...