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

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Why don't my lightdm.conf edits affect my desktop screen resolution?

I wanted to change my desktop screen resolution to 1366x768. But my VESA drivers(AMD REDWOOD) did not detect that resolution. So I created a shell script as follows:- xrandr --newmode ...
10
votes
1answer
955 views

Why use a Display manager?

I'm currently trying to free as much memory as possibile because I'm using my laptop for scientific simulations. One of the things I made is disable gdm and using login+startx to start GNOME session. ...
10
votes
2answers
3k 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 ...
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0answers
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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 ...
9
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3answers
20k 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
2answers
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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
1answer
2k views

How to change circular icon to indicate chosen session in unity-greeter?

In Precise (12.04), when I login to lightdm, using the unity-greeter, there's a white circle by my name. For the standard DEs like Unity or XFCE, the circle has a representative icon (Ubuntu symbol ...
9
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1answer
486 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.?
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2answers
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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?
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2answers
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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
175 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
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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
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9answers
19k 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
1answer
59k 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+). ...
8
votes
3answers
8k 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
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1answer
6k 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
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2answers
16k 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 ...
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votes
4answers
19k 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
1answer
3k 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 ...
8
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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
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5answers
1k 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
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3answers
4k views

How to change the font in LightDM

I want to change the font in LightDM (Ubuntu 12.04 default login screen) but the unity-greeter.conf file is in blank. Thank you.
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8answers
3k 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 ...
7
votes
1answer
24k 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 ...
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 ...
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3answers
4k 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
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2answers
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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
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 ...
7
votes
1answer
948 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
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1answer
4k 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 ...
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
6k 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
2answers
6k views

Programmaticaly change lightdm autologin session type

I have problem with lightdm setting autologin session type (using my config tool). Lightdm logs into previously selected session. I see that autologin-session is UNIMPLEMENTED in version 1.2.1. Maybe ...
6
votes
1answer
25k views

How to enable the “Other User” login in ubuntu 12.04 if the userid I want to use isn't listed on the login screen?

How can I enable the "Other User" option for the login manager in ubuntu 12.04? This was available in older versions of Ubuntu for use in logging in with a user-id other than those listed on the login ...
6
votes
3answers
10k 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 ...
6
votes
3answers
8k views

Unity greeter background not changing for users automatically after upgrade

I have recently upgraded from 11.10 to 12.04. Normal upgrade, no new installation. In 11.10 I was using Simple LightDM Manager tool to set a custom wallpaper on the login screen. This tool ...
6
votes
3answers
20k views

How do I set the GNOME Classic login to be the default with autologin?

I changed to gnome classic fallback, I auto-login but it defaults to unity 3d, how do I make auto-login default to gnome classic?
6
votes
1answer
18k views

How can I restart Unity/GDM when I get a blank screen after suspend?

Occasionally, with Ubuntu 12.04, I get a blank screen when I resume from suspend. I can see the mouse cursor, but that's all. I can get TTY terminals, so is there a way to restart the graphical ...
6
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, ...
6
votes
2answers
7k 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 ...
6
votes
1answer
1k views

Lightdm-too many desktop envirements

Today I tried to play with LXDE. After installing I go to login screen and try to select LXDE from list of avaible DE, but I can't select OK after that. . I know this is bug, but maybe somebody can ...
6
votes
3answers
9k views

Virtual Terminal switching with a multiseat setup and lightdm

My aim is to have two seats for my Ubuntu machine. One of the monitors is a USB touchscreen from Mimo with a displaylink chip. I already got it working as main display just by reconfiguring xorg.conf. ...
6
votes
1answer
1k views

Resolution of the login screen is wrong on a second monitor

Is it possible to do changes to the login screen in Ubuntu 11.10? I'm running with a laptop and an external screen and in boot and login they're mirrored and has a weird resolution. To clarify: I'm ...
6
votes
1answer
3k views

change xorg.conf based on displaylink monitor detection using lightdm

I've purchased a USB driven external display for my laptop. I've gotten it working by adding a xorg.conf file, however when the usb monitor isn't plugged in I want the xorg.conf to disappear so that ...
6
votes
3answers
5k 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 ...
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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 ...
6
votes
1answer
4k 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, ...
6
votes
1answer
999 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 ...
6
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1answer
471 views

What is wrong with this method of using an alternate lock screen background?

I have recently been trying to separate all three wallpaper states that are all the same as default. They are: Unity Greeter Lock screen Desktop All of them have a wallpaper, and as default the ...
6
votes
2answers
3k 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: ...