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

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Xubuntu LightDM shows blank screen half the time [closed]

System info: (will be amended if any more info is asked for) My laptop runs Xubuntu 12.10. As it has a Solid State Drive, /tmp, /var/tmp, /var/log and /var/log/apt are set to tmpfs in the /etc/fstab ...
3
votes
1answer
396 views

How to run python script at login screen?

I use a python script to set brightness to zero. #!/usr/bin/python import dbus bus = dbus.SessionBus() proxy = bus.get_object('org.gnome.SettingsDaemon', ...
3
votes
1answer
647 views

Cannot restart Ubuntu after replacing Unity with Gnome and purging lightdm

I am running Ubuntu 11.10. I used the directions here to replace Unity with Gnome. It seemed to work fine until the end of step 2 when I rebooted the computer. When I chose the default option, I just ...
3
votes
1answer
4k views

LightDM not responding to XDMCP requests 12.04 LTS

Since a recent upgrade from 10.04 LTS to 12.04 LTS I can no longer login using XDMCP (ssh -XC is okay). This is similar to an earlier question but the answer (add xserver-allow-tcp=true) didn't help ...
3
votes
1answer
876 views

Working around Active Directory Users

In my office system, Ubuntu is configured for Active Directory authentication with Windows using likewise open. I have three issues. Each time when I switch on my system and some times when I ...
3
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1answer
1k views

Once authenticated once, passwords are cached in lightdm

We are preparing 12.04 LTS for our userbase and have done some basic configuration to the login screen (disabled guest account, removed user list, etc). However, one thing that I've noticed is that ...
3
votes
1answer
665 views

LightDM run desktop for one session “This session Only”

I sometimes experiment with many different desktop environments, some of which can be unstable. I have had a few times where I needed to drop into root shell, disable auto login, then log into my ...
3
votes
1answer
734 views

No login screen after logout

this is my first question about Ubuntu :) Since this morning when I log out (top right icon, log out) I don't get the usual GUI login screen but I get this instead: If I log in with the Ubuntu 2D ...
3
votes
1answer
239 views

No Unity session after update

After I updated Ubuntu 11.10, LightDM won't show the Unity entry anymore. What can I do, to get the Unity (3D) entry back? NV drivers are fully working. I installed Gnome 3 weeks before.
3
votes
1answer
89 views

Which application is responsible for accepting passwords when entered in diffrent keyboard layout?

I just noticed that when I'm prompted to enter my password to unlock the system, no matter what layout I choose (Persian or English) as long as I press same buttons that resembles my password in US ...
3
votes
3answers
521 views

Is it possible to log in as another user within an already-running session?

Is it possible to log in as another user within an already-running session in Ubuntu 11.10 (as it was with Xephyr or Xnest under GDM)?
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0answers
102 views

Lock screen asks for password on no-password account

The Ubuntu lock screen always asks for a password even when the account does not have password. In my opinion, it should be exactly like the login screen: a button "connect >" for accounts that don't ...
3
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0answers
129 views

Prevent light-locker from setting volume to 100%

I'm on 14.04 with XFCE. When I lock the screen it appears to mute the system volume (or perhaps just mute anything from the locked session?). When I log back in the volume is reset to 100%. This ...
3
votes
1answer
426 views

Ubuntu 14.04, Nvidia Driver 304.117 for 7600GT

I have a clean new installation on an SSD Drive of Ubuntu 14.04 with NVidia Driver 304.117 running. After (very quick) boot I can hear that the login screen has started but no picture on my F-HD ...
3
votes
2answers
1k views

Start another GUI on different TTY

For some reason I want to have 2 GUIs open at different TTYs. the commands sudo service lightdm stop/start will stop/create a new GUI at TTY7. but how can I do the same at different TTYs or ...
3
votes
1answer
225 views

Lightdm crashes at seemingly random intervals

I installed ubuntu 12.04 LTS around a month ago, and it's a great experience. Except for one thing: Lightdm crashes at seemingly random times, on average 2 times on a normal working day. I have no ...
3
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0answers
237 views

After Upgrade from 13.04 to 13.10 missing user in login screen

I have upgraded to 13.10 from 13.04 now after booting (even after updates and rebooting) my user id is not listed. It has a uid higher than the minimum in lightdm.conf. I have the user light display ...
3
votes
0answers
548 views

How do I disable the guest session in Ubuntu 13.10? [duplicate]

With Ubuntu 13.10 this question on how to disable the guest session no longer works because I think the lightdm config files have changed in Ubuntu 13.10. I know you used to have to add the line ...
3
votes
2answers
3k views

Ubuntu 12.04.3 Graphics Issues: Broken Pipes, Reinstalled Xorg and Bumblebee

It seems I have a problem, and am only making it worse by following what I find online. I have a new Asus N550JV-D71 (not sure about the part after the dash, though I definitely know it includes 71). ...
3
votes
0answers
363 views

Xubuntu: How can I avoid the double-password entry (lightdm then xscreensaver) on user switching?

I'm running Xubuntu raring with lightdm and xscreensaver. Both users on the system have xscreensaver set to lock the screen after n minutes. However, when I click "switch user" (or do gdmflexiserver ...
3
votes
1answer
698 views

Choose lightdm login screen location in multi monitor setup

How can I set the location for the login screen with lightdm in a multi monitor setup. If have two monitors (1920x1080) + (1920x1200) and currently after I boot the login is shown on the left ...
3
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0answers
449 views

Lightdm not working at all since bumblebee install!

I'm relatively new to Ubuntu, so please excuse me if my question is stupid... So a few weeks ago, I bought a Gigabyte U2442N with Optimus Graphics (a 640M and a HD4000). I installed the stable ...
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0answers
416 views

How to get 12.04's login screen (lightdm) to display the shutdown menu like 10.04 when the computer's physical power button is pressed?

In Ubuntu 10.04 while at the login screen (gdm), when the computer's physical power button was pressed a screen popped up that offered options on shutting down the system (shutdown, restart, cancel, ...
3
votes
1answer
3k views

How to configure permanent autologin? [duplicate]

Possible Duplicate: How do I enable auto-login in LightDM? How to permanently disable LightDM greeter and enable autologin? I'm trying to set up an Ubuntu 12.04 machine as a kiosk and I ...
3
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4answers
939 views

Multiple Users, Single Workstation, 1 home folder (Can this be achieved, if so how?)

I am setting up a single workstation (kiosk) in my local library for a team of genealogy researchers (approx 12-14). I plan to use Ubuntu 12.04 LTS as the OS. Each user must have a unique user ID ...
3
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1answer
545 views

Lost gtk theme style in login screen after Compiz crashed

Normally, all controls in login screen (button, textbox, etc..) have the current gtk-theme style. But after Compiz crashed (always happen when I enable or disable a plugin), the style has gone (no ...
3
votes
1answer
558 views

How can I get the computer to sleep while at the login screen? (No users logged in.)

I have my computer set to "Suspend when inactive for 30 minutes" in system settings. This function works fine if a user is logged in and does not do anything for 30 minutes. However, if all users are ...
3
votes
2answers
1k views

User login cycles [duplicate]

Just install 12.04-64bit and while I can login using the guest login, I cannot with my user login: it just cycles back to the login screen. I have performed the sequence of apt-get update/upgrade and ...
3
votes
1answer
2k views

Low graphics mode error on startup with NVIDIA graphics (12.04 LTS )

My problem is similar to two other posts concerning ATI cards and 12.04 LTS: Post1 & Post2. In my case I use a Dell Precision M4300 laptop which uses a NVidia Quadro FX 880M. Doing a lspci | grep ...
3
votes
0answers
1k views

How can I make the LightDM lock screen my gnome-shell lock screen in 12.04 [closed]

In Unity, LightDM is the default lock screen. Is it possible to make LightDM my default lock screen in gnome-shell ?
3
votes
1answer
510 views

Login screen is rotated [closed]

When I turn on the computer, the login screen is rotated. But when I log in to my account, the screen is normal. I have an ATI graphics card on an AMD laptop. The settings is normal for two user ...
3
votes
0answers
329 views

After upgrading from 11.04 to 11.10, gnome-shell entry in Lightdm actually launched Unity [closed]

I had Ubuntu 11.04 installed running gnome 2. I upgraded to 11.10 and everything went very smoothly. I installed GNOME Shell via: sudo aptitude install gnome-shell Logging into the Gnome session ...
3
votes
1answer
1k views

How to remove the old gdm [duplicate]

Possible Duplicate: How can I make LightDM the default display manager? I have installed Ubuntu 11.10 beta and all of its changes are now working and let me testing them, but the only ...
2
votes
2answers
10k 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 ...
2
votes
2answers
854 views

Is it possible to run ChromiumOS as a session?

Is it possible to install ChromiumOS within Ubuntu? I am NOT looking for dual boot. I want to use as a session like unity or gnome-shell. Please let me know if anyone has tried it.
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votes
4answers
7k views

12.04: LightDM freezes while “Logging in…” - maybe due to deactivated login sound [closed]

good morning, lightdm freezes often after I entered my passwort. It hangs exactly saying "logging in...". It's no total system breakdown though. I found out that there is already an existing bug ...
2
votes
5answers
7k views

Ubuntu 13.04 - can't login to Unity, keep going back to login screen with all users

today I've updated openssl and libssl (automatic update). After reboot I can't login with any user (even with Guest or new one) into X. I've tried with installing gdm, gnome-session-fallback - no ...
2
votes
2answers
3k views

How to edit lightdm to show “other user”?

I am an IT student aide at a college and we have a very small test computer that we started messing around on with 12.04 and used likewise to join it into the Windows network that we have. However, ...
2
votes
2answers
278 views

Why are the login boxes on the left and how can I easily move them to the center?

I wonder why Ubuntu chose to put the login forms at LightDM in the left instead of centering it. I find it totally ugly and a mental effort when I boot up and try to find the login with my eyes ...
2
votes
2answers
353 views

How can I login to a display-less machine via ethernet?

I have two Ubuntu systems. The first I'd like to use as a server. Hence I don't have a display or even keyboard for it. The other is my laptop and can connect to the network. Upon bootup, the ...
2
votes
3answers
3k views

Ubuntu 14.04 Login screen password always incorrect

I have just installed Ubuntu 14.04 for the first time boot. I am a long time MS Windows user and don't like where Windows is headed so I decided to switch to Ubuntu and only use Windows for gaming. ...
2
votes
2answers
6k 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
2answers
14k views

Set default user session to XFCE4

How do I set the default user session to XFCE4? I have tried: sudo /usr/lib/lightdm/lightdm-set-defaults --session xfce sudo /usr/lib/lightdm/lightdm-set-defaults --session xfce4 sudo ...
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: ...
2
votes
1answer
1k views

User-level script run by lightdm

I'd like to do key remapping that effects only my user, but everywhere within my window manager, not just in a terminal. In lightdm, I select awesome as my window manager and log in. Are there any ...
2
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1answer
306 views

Meaning of files under /etc/lightdm/lightdm.conf.d/?

I installed Xubuntu from an .iso image. Then I installed ubuntu-desktop package from the repositories and removed xubuntu. However, the only file under /etc/lightdm/lightdm.conf.d is 10-xubuntu.conf. ...
2
votes
3answers
2k views

Ubuntu 14.04 - No Unity in user account, but in guest account

Yesterday I switched back from Linux Mint to Ubuntu 14.04 and after installation I faced the following problem: When I login with my user account Unity isn't loading. I can see no desktop elements - ...
2
votes
2answers
3k views

Black screen on login maybe lightdm problem

Hi after I entered this command in terminal: sudo sh -c 'echo "greeter-show-manual-login=true" >> /etc/lightdm/lightdm.conf' and I reboot my PC i cannot login to ubuntu. After i select the os ...
2
votes
3answers
3k views

How to run greeter/login script with lightdm

Is there a workaround to run a lightdm script? The one in the docs doesn't work. Anything placed there will prevent X from working. The script I would like to use is my KVM utility synergy. I ...
2
votes
1answer
2k views

How to let screen time out on sign in screen [closed]

I have Ubuntu 13.10 set up on an older PC. If I am logged in as a user, then the screen timeout and power saving mode works as expected. However, if nobody is logged in, the screen never times out, ...