The greeter (login screen) application for Unity. It is implemented as a LightDM greeter.

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184
votes
39answers
533k 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 ...
59
votes
14answers
53k views

How do I change the wallpaper of the login screen?

I would like to set the wallpaper in the login screen (Unity Greeter), how do I do that?
41
votes
5answers
37k views

How do I hide a particular user from the login screen?

How do I hide a particular user from the login screen on a default install of 11.10 and higher? (ie. using Unity Greeter)?
31
votes
4answers
12k views

How do I remove the dots from the login screen?

I can change the background image that Unity Greeter displays, but regardless of the image I choose, it's overlaid with a grid of dots. The dots look OK on the default background, but they look ...
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?
13
votes
1answer
3k 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 ...
28
votes
4answers
9k views

Can I run Steam as its own standalone session?

I would like to run Steam in a standalone mode so I don't have to load a desktop and then run Steam. I just want 100% of my resources dedicated to the game. Ideally it would just be a Steam session ...
14
votes
2answers
7k views

How can I invoke a user switch from the command line?

In 11.10 I used 'gdmflexiserver -xnest' to switch users without logging out however I think gdm has now been completely removed. I'm trying to bind a keyboard shortcut to do the equivalent of 'Me ...
6
votes
6answers
9k views

Restore Unity Greeter

I've installed XFCE Desktop environment, but when I decide to switch back to Unity, while uninstalling the XFCE packages, the LightDM keep starts like XFCE, and I want to restore the Unity one. I ...
14
votes
5answers
8k views

rotated monitor. login screen needs rotation

I rotated my screen, and once I login, it works fine. But, the greeter (login) screen hasn't got the message that things are rotated 90 degrees. How can I change the rotation of the login screen? ...
7
votes
7answers
38k 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 ...
0
votes
1answer
3k views

lightdm/unity-greeter wallpaper will not set

I am trying to set the wallpaper on my login screen, but i cant seem to get anything to stick. I have used gsettings set com.canonical.unity-greeter background '/path/to/pic.jpg' as user 'lightdm'. ...
6
votes
2answers
16k views

Unity greeter does not display custom wallpaper

I am using Ubuntu 14.04 LTS 64 bit . I know this question has popped up many times but I want to make it very clear that none of the posts helped me a bit. my Problem: I am unable to get my custom ...
0
votes
2answers
2k views

How To Change Login Screen Background On 11.10 [duplicate]

Possible Duplicate: How do I change the wallpaper in LightDM? How do i change the background of the login screen on 11.10 i have tried Simple-lightDM-Manager and now all i get is a black ...
5
votes
4answers
3k views

12.04 desktop login loop

I installed 12.04 from CD in a partition where 8.?? had been working. The installation appeared fine but Ubuntu booted to a black screen. After updating packages and fighting with nvidia drivers for a ...
0
votes
0answers
431 views

Unity-Greeter not showing personal wallpaper [duplicate]

Possible Duplicate: How do I add customized wallpapers so they appear in the dynamic unity greeter? I did a fresh install of ubuntu 12.04 64bit and for some reason my personal wallpaper is ...
22
votes
2answers
4k views

Is there a way to shut off showing the user's wallpaper at the login screen?

I don't want to expose my wallpaper to other people who share my computer, is there a way I can disable this feature or work around it?
2
votes
2answers
15k views

How to change the default Desktop environment (That appears in the greeter) in 14.04

Previously I navigated to /etc/lightdm/lightdm.conf and changed user-session=ubuntu. lightdm.conf doesn't exist in Ubuntu 14.04 at that location, so how do I change user-session=ubuntu to something ...
2
votes
4answers
17k views

/etc/lightdm/unity-greeter.conf file missing

I have no /etc/lightdm/unity-greeter.conf file. but there is /etc/lightdm/lightdm.conf and /etc/lightdm/users.conf but there isn't a background=path/to/image line in either of those files. Related: ...
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, ...
1
vote
1answer
799 views

Edit the Unity-Greeter theme

I am trying to get rid of some of the indicator icons on the Lightdm login screen (or maybe just get rid of everything). No luck so far. The file I am editing is @ ...
1
vote
4answers
2k views

Unity-greeter black screen on 13.10

I've recently installed ubuntu 13.10 64bit on a desktop (UEFI mode). After the plymouth splash i get a black screen. After some experiments I found a temporary solution: switch back to tty1 and ...
1
vote
2answers
858 views

12.04 login loop

As the title says, I have problem with login. When I enter correctly password and confirm, black screen with log appears for like 0,5 seconds and then it goes back to login screen. Unlike the others, ...
0
votes
1answer
2k views

xubuntu lightdm unity-greeter bad looking theme

I'm using xubuntu 12.10 and wanted to use the unity-greeter for the login screen (lightdm). The thing is that I installed the package unity-greeter (and gnome-settings-daemon), changed to ...