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

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How do I install KDE and retain LightDM as a login manager?

I want to install KDE in my Ubuntu 12.04 . I am using LightDM. So how can I fully install KDE? I do not want to remove LightDM. I want KDE but without any confliction with it.
11
votes
1answer
1k views

How can I enable a face browser in LightDM?

Is there a way to enable face display in the default LightDM greeter in Oneiric? If not, is there another alternative greeter that supports faces? (I know I can switch back to gdm if necessary, but ...
11
votes
2answers
3k views

How do I remove the shutdown button only on the login screen?

I don't want anyone to be able to shut down my computer from the login screen. Can I remove the shutdown button at the top right corner of the login screen in Ubuntu 12.04?
11
votes
6answers
8k views

Can't get nVidia drivers working with 16.04, logs out right after login

I have installed Ubuntu 16.04 beta 2 on Monday, Apr 18th. When I try to install nvidia-current, nvidia-361 or the version that jockey installs, either lightdm fails to start entirely or I can't get ...
11
votes
0answers
5k views

How do I stop or start the desktop from loading on bootup? [duplicate]

I occasionally want to use my Ubuntu machine as a desktop but mostly as a headless file server. Before I upgraded to Oneiric, I used rcconf services to disable or enable the desktop. In Oneiric I ...
10
votes
3answers
20k 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. ...
10
votes
1answer
82k views

Which display manager should I use? LightDM or GDM? [duplicate]

Possible Duplicate: What’s the difference between GDM and LightDM? I'm a somewhat experienced noob on this Linux-thing. I'm growing quite familiar with Ubuntu and I just love Gnome(3+). Just ...
10
votes
1answer
907 views

What is the “Other” account in LightDM?

I use Ubuntu Oneiric and I would like to know what is the account named Other for? It does not appear in the user manager. How can I remove it?
10
votes
2answers
6k views

How to control LightDM power saving preferences?

I want lightdm to enter power save after a specific period of time. If I'm logged in then my screen will time out as per the user settings, however when no one is logged in the screen will stay on ...
10
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3answers
5k views

How do I change the font on the login screen?

I want to change the font in the login screen - where is the configuration for that?
10
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0answers
5k views

How to disable login sound? [duplicate]

Possible Duplicate: How do I disable the drum beat sound on the login screen? How do I disable the login sound? I have tried all guides on the internet I can find, but they are for previous ...
9
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3answers
13k views

Is there a list of all the possible configuration options for lightdm?

Every time I want to customise lightdm I find it frustrating that there is no obvious list of configuration options I could use in /etc/lightdm/lightdm.conf. Perhaps someone here knows where there is ...
9
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1answer
34k views

How to change from GDM to LightDM?

I've upgraded to 12.04. My upgrade didn't go as expected; X crashed at the middle of the upgrade. I had to install many packages manually. This left me with a GDM login screen. How do I change from ...
9
votes
3answers
26k views

Run a startup script with lightdm

I have a tablet PC and the graphics driver doesn't support xrandr, so in order to rotate the screen I run a script which changes the Xorg.conf file and then restarts lightdm. I also have a script ...
9
votes
9answers
5k views

Appearance does not change on switching the theme

If I select Radiance or Ambiance in the menu show in the following picture, my whole theme does not change. It only changes the title bar. How can I resolve this problem? Or how can I reset the theme ...
9
votes
2answers
1k views

Is it possible to use LightDM in 11.04?

O we know 11.10 will use LightDM instead of GDM. My question is can I use it in 11.04 already or would that not be advisable?
9
votes
2answers
11k views

Why doesn't right-click work on my desktop?

I installed elementary OS and e17 on my Ubuntu 12.04 from ppas. After logout and login, right click on desktop is not working in gnome and unity but working in file manger.When I login into Pantheon ...
9
votes
1answer
520 views

What keys can I use to navigate Unity Greeter with a keyboard?

I have a media center with a keyboard but no mouse. Is there a way I can navigate the Unity Greeter with a keyboard so I can change the session I log into, etc.?
9
votes
1answer
5k views

How to make ubuntu 14.04 a kiosk [duplicate]

I have made a clean install of Ubuntu 14.04 LTS Desktop and now want's to convert it into a kiosk with a full screen webbrowser. This was previously done in 10.04 and worked perfect, but due to ...
9
votes
2answers
5k views

Gnome 3 always hangs after logon

The problem I'm having is that after logging into GNOME Shell 3.4.1 on Ubuntu 12.04.1 LTS. After a short period of time (approx 0-2 minutes) gnome shell becomes unresponsive. Hovering on the corner /...
9
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1answer
205 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 ...
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 ...
8
votes
9answers
23k views

Desktop login fails, terminal works

I have a freshly setup 12.04 LTS pc system (120 GB SSD, 1 TB HDD, 16 GiB RAM); since a few days, I can't login to the graphical desktop anymore: there is very short flashing shell window which ...
8
votes
7answers
40k views

How do I set the LightDM wallpaper in Ubuntu 14.04?

In previous versions of Ubuntu, picking one of the default wallpapers meant that you saw it on the login screen as well. I am now on a clean install of Ubuntu 14.04, the LightDM wallpaper appears to ...
8
votes
1answer
279 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 ...
8
votes
3answers
9k views

How can I reduce the CPU usage of X/LightDM?

Running Xubuntu 12.04 on a netbook (Lenovo S10), the lightdm process which runs in the background takes up constantly a precious 12% of the CPU. Besides, this consumes a considerable amount of energy, ...
8
votes
1answer
7k views

How to add 'awesome' selection in LightDM?

I installed awesome using apt-get, and after installation finished, I logged out to lightdm. But there is no selection for awesome, only Unity and subtle (since I recently installed subtle). What ...
8
votes
2answers
19k views

How can I replace LightDM with MDM?

Linux Mint Cinnamon 1.4 released with "MDM display manager". It is based on the code of GDM2.20. It provides: Graphical configuration tools Themeability Remote, automatic and timed login Event ...
8
votes
5answers
25k views

How to restore LightDM settings?

I've been playing with some of the settings on simple LightDM manager, and I'm not really sure I like what I've done. I've uninstalled LightDM manager but settings remains. How can I restore LightDM ...
8
votes
2answers
20k views

Caught in loop when trying to login after upgrade from 14.10 to 15.04

After an otherwise uneventful upgrade from 14.10 to 15.04 I cannot login. When I provide my password the screen flickers briefly and I am back at the login screen. I have checked permissions on ....
8
votes
1answer
2k views

/usr/bin/X eating all the CPU [closed]

I have Ubuntu 12.10 system and it works slow. For checking I ran Htop command and found out that /usr/bin/X -nocursor :0 -core -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -n eating all the ...
8
votes
1answer
6k views

How to get the right DPI resolution on Ubuntu 13.04 Saucy?

The physical DPI of my laptop screen is approximately 142 dots per inch as you can calculate from the correct output of xrandr --query: $ xrandr --query | head Screen 0: minimum 320 x 200, current ...
8
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2answers
2k views

How to disable guest session ONLY from login screen?

I DO WANT: To be able to select a guest session from the user menu when logged in to my administrator account in case someone needs to use my computer. I DO NOT WANT Someone to be able to turn on ...
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, ...
8
votes
5answers
2k views

Weird XDG User Dir resetting bug

I have a weird problem with 12.04 LTS. Regardless of what I do to the ~/.config/user-dirs.dirs file, whenever I login again the next time, that file gets all set to $HOME only. Something is happening ...
8
votes
2answers
7k views

Why is the evolution-calendar-factory process running?

Why is the evolution-calendar-factory process running? Here are some of the running processes (created with ps aux --forest) lightdm \_ /usr/bin/X -core :0 -auth /var/run/lightdm/root/:0 -nolisten ...
7
votes
5answers
12k views

How to troubleshoot “failed to load session” errors?

On the upgrade from 11.10 to 12.04, my XMonad + Unity configuration no longer works. When I attempt to log into this session, I get "failed to load session 'xmonad'". Where can I look to figure out ...
7
votes
3answers
6k views

How can I require users to also enter their usernames upon login?

Good day, Does anyone know how to modify the login screen so that users are required to type their username along with their password? I'm running Ubuntu 12.04 with all default settings
7
votes
2answers
6k views

.xsession ignored, Ubuntu 12.10

I started using uxterm instead of Gnome's terminal today. I put settings for uxterm in ~/.Xdefaults. But because Ubuntu's configuration ignores my .xsession file, I can't have these settings loaded at ...
7
votes
2answers
2k views

Switching desktop environment from Unity?

Basicall I have installed a few desktop environments. And if you are familiar with Unity, you know that the way switching works, is you get this sort of drop-down with all the environments installed, ...
7
votes
2answers
14k views

How can I change the keyboard layout in the login screen? [duplicate]

I have different users on the machine who use different keyboard layouts. In 11.04, you could change the keyboard layout on the login screen (and it would remember it per user). How can I do this in ...
7
votes
3answers
9k views

Laptop using 14.04 won't get past login GUI

My laptop was working perfectly yesterday, and now today I can't log in. At first, I was only getting a black screen. However, after following instructions in some questions here on AskUbuntu, I ...
7
votes
2answers
6k views

Is it possible to use the 'unity-greeter' for LightDM on Xubuntu 11.10?

I was wondering if there is a way to use the 'unity-greeter' instead of 'lightdm-gtk-greeter' for LightDM on Xubuntu Oneiric. I tried installing the unity-greeter package and changing the greeter-...
7
votes
1answer
1k views

Run conky over LightDM

Is it possible to have my conky gadgets run over my lightDM login screen? If so, how would I go about this? I saw someone doing it with XDM under debian in this screenshot from a thread on the ...
7
votes
3answers
6k views

Why is my system freezing when I switch users

Hello I've recently upgraded from 13.04 to 13.10 64bit. I'm running AMD graphics with the proprietary drivers. I have two user accounts. Mine(administrator) and my girlfriend's(standard) My ...
7
votes
3answers
5k views

Can I set a default user in lightdm?

I've been playing with Ubuntu Oneiric on my netbook (where breakage isn't really a concern); I like the new lightdm login screen, but it has one minor annoyance: in addition to my own user account, ...
7
votes
1answer
10k 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 15....
7
votes
1answer
2k views

Show banner at login with LightDM

I just upgraded to Ubuntu 11.10 and I was wondering if it's possible to show a login banner with text... my company's IT policy requires that some generic text be shown at login. I've seen where you ...
7
votes
3answers
7k views

LightDM is running but does not display on login

LightDM is installed and running by default as a part of the Beta release. Yet, LightDM is not displayed at login time, rather a primitive, GDM like manager is the one we find at login time. I tried ...
7
votes
3answers
8k 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 ...