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

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Ubuntu 14.04 Guest Account - Disable CTRL ALT DEL

I'm setting up a Ubuntu Linux install as a base for VMWare View. I have it set to auto login using the guest account. The guest account is perfect for this because when the machine restarts it ...
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27 views

How to disable guest session in Lubuntu 14.04 (Lubuntu mode) [duplicate]

This is not a duplicate of Other questions which infact are incorrect! They shown how to disable guest session in Ubuntu, but the behaviour of Lubuntu is different. If a Lubuntu 14.04 uses the same ...
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8 views

Remove LDAP users from Lightdm greeter user list

I have default user accounts which are local to my system and I want to show them in a user selection list. This is working. Recently, I've enabled logins with LDAP. The flow is selecting "Other..." ...
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1answer
27 views

How to fix Ubuntu 14.04 LTS login screen hangs with “logging in…”

Anyone have suggestions for this: I upgraded my Ubuntu system to 14.04, and the upgrade failed miserably. I was forced to restart the system in order to get to a login. After following several ...
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1answer
30 views

Can't Login using GUI

I can't login to my standard or guest session using the Ubuntu GUI.I think its a problem of the greeter because I can login to my standard account in console mode.However there is no problem in login ...
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6 views

Error while login in Ubuntu using Fingerprint GUI

When I am trying to login in Ubuntu using Fingerprint GUI I receive the following error : ERROR: FOUND ENCRYPTED HOMEDIR BUT NO PASSWORD I have installed my fingerprint for both sudo and su ...
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15 views

Freezing, Errors and Display Manager PRoblems

I'm running ubuntu 14.04 I think thats the version, I recently had problems with what I'm thinking is the display managers. first my laptop(with ubuntu on it) was having problems with freezing, it ...
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1answer
31 views

UBUNTU 14.04 LTS Date and time is not displaying in the menu bar after login

At the time of login, it displaying date and time in menu bar, once I logged in It disapears from the menu bar. I have tried these mentioned below: First approach: sudo apt-get install ...
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1answer
19 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. ...
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11 views

Disable unity-greeter dynamic switching (12.04)

Ubuntu 12.04 Unity greeter has introduced selected user dynamic background, that means that when selecting a user from the available users list the background will change to reflect the selected ...
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17 views

why can't i resume after using lock/hibernate mode?

First of all, hibernate has been very iffy for me. And then when I open my computer back up it goes to the Light Display Manager login. I usually can "Ctrl-Alt-F7" to get to the regular login, but ...
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49 views

Disable touchpad at login screen

EDIT (revision 4) According to this ubuntuforums.org post, upstart cookbook and CameronNemo's answer, I tried to change the first line with start on login-session-start and I moved the conf file ...
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2answers
29 views

lock screen has turned to an old design

It's been two weeks since I installed Ubuntu 14.04 and today I found out my lock screen has turned to a very old design. like this image: I am new to Linux and I tried to fix the problem but I got ...
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51 views

Screen flicker, ubuntu 14.04 freeze when changing resolution/display settings

If I login into Ubuntu 14.04 (not with 12.04), and I try to change either the resolution or plug into an external monitor via the HDMI port, everything freezes and: either everything goes dark/black, ...
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13 views

Ubuntu wont boot, stuck at logo screen

I recently removed my win7 and installed ubuntu 14.04. Everything was fine until i tried to install newer nvidia drivers. I followed the guide, and it said to stop light, so i typed it in the ...
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36 views

no GUI after installing amd catalyst driver

I'm running a DELL inspiron 3537 with 64 Ubuntu 14.04. After asking around I've decided to install the drivers for the computer. Here's what I did: install the intel driver from here reboot ...
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2answers
33 views

Screwed up lightdm file and am now in login loop

Upgraded from 12.04 to 14.04...upgrade worked but ran into permission problems mounting usb stick and launching applications. Attempting to fix this I edited and saved lightdm....am now stuck in login ...
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1answer
35 views

Missing Login screen (kdm missing? plasma5)

I installed plasma5 on 14.10 and had bunch of problems. I was in a hurry to fix, so removed/reinstalled blah blah blah bunch of packages, including probably lightdm and kdm. Now I want Plasma5 back, ...
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1answer
31 views

LightDM won't start after Grub - Cannot Access TTY unless closing and re-opening lid

I am running Ubuntu 14.04 on an hp envy 17 3D. New installation + ATI Drivers I would appreciate some help troubleshooting what I think is a LightDM issue which I have not been able to solve. When I ...
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1answer
41 views

Kubuntu 14.04 login fails after lightdm/ xdm/ lightdm swap [duplicate]

I am running kubuntu 14.04. Recently as part of a python development project changed the DM to xdm. Since then I have not been able to get the system to let me back past the login page. To be ...
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19 views

Why Light locker unmounts encfs mount points when screen is unlocked

... and how to prevent this behaviour or work around that? I have the following mount point: encfs on /home/me/Private type fuse.encfs (rw,nosuid,nodev,default_permissions,user=me) I lock the screen ...
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26 views

screen doesn't load after login ubuntu 14.04

when I try to login at first it seems normal but then it crash and the screen is black. I tried to restart lightdm but it shows thi error Failed to use bus name org.freedesktop.DisplayManager, ...
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12 views

Unity / Grub Problem

When Ubuntu 12.04 load, it does not show graphical interface, only a cursor. And then goes to tty1. When I go to Ctrl+Alt+F8 I can see some text infos (starting apache2..etc). I tried: restart ...
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38 views

How can I install Unity 8 and lightdm on Ubuntu Server?

I would like to use the new Unity 8 which uses Mir without having to install Xorg. If it's possible, I'd like to use LightDM as my display manager. I first tried installing the ...
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1answer
61 views

How can I change the KDE lockscreen?

I want gdm, lightdm, something--anything--other than the default one in KDE. I'm not talking about the login manager or anything, that I have set to gdm. I'm talking about the lock screen with the ...
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1answer
87 views

Ubuntu 14.04 hangs on boot after starting CUPS

As I was trying to install an alternative keyboard layout I ended up deleting my /usr/share/X11/xkb/* folders. I tried to reinstall them with apt-get remove xkb-data && apt-get install ...
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45 views

Change screen resolution in login screen and text console

I know I can change the screen resolution for: Desktop (I know I can change it using Settings > Display or xrandr) Grub (I know I can change it in /etc/default/grub GRUB_GFXLOAD variable) But, how ...
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39 views

How do I get lightdm on suspend from awesome/gnome session?

I am using awesomewm as my windows manager on ubuntu 14.04 and use the gnome settings daemons for power, wifi, etc. When I close the lid, my computer suspends. When I open it back up, it does not ...
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57 views

No log in screen in ubuntu 14.04

I am using ubuntu 14.04 64bit (up to date). I have installed kubuntu-desktop and used for 1 day without any problem. On next day found that kde restart randomly and log out automatically. So I remove ...
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37 views

Cannot Login and Connect Internet Via Proxy after upgrade from 12.04.05 to 14.04.01

I got two problems after upgrade from 12.04 to 14.01, Cannot connect internet via proxy although I set it in /etc/apt/apt.conf Cannot login into lightdm, it asked password and looping. I change the ...
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61 views

Ubuntu Touch: kill Windows Manager and start xterm in GUI Mode

I installed xterm and I would want it to be the Only GUI application running. so I killed the lighdm using: sudo service lighdm stop. and try to run xterm using: sudo xterm through a SSH ...
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39 views

How to assign one X Screen to one LightDM seat?

I'm trying to configure a multiseat setup on a desktop PC with two keyboards two mice two monitors attached to the same graphics card (Nvidia NVS 310) Using these instructions I managed to make ...
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49 views

Lightdm is broken when used ubuntu tweak to change the default background!

I have ubuntu 14.04 and I used the "change login screen background" and now, when I change my wallpaper, The wallpaper on the login screen dose not change and if I change it via ubuntu tweak, The ...
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103 views

How can I have my login screen use the same wallpaper as my desktop?

I use pcmanfm to display wallpapers on my desktop. The location of the conf file for pcmanfm is ~/.config/pcmanfm/lubuntu. In this file the wallpaper is simply set in this form: ...
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Ubuntu 14.04 - Lightdm and Unity optimal configuration

What I'm using: SonyVaio Vpcef2e1e (with 4GB RAM and Ati mobility radeon™ hd 4250) In the old days I never had issue with the graphics. I had to fight sometimes to add drivers to the graphic ...
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27 views

Is restarting lightdm likely to cause any serious problems?

I frequently mess things up and I have to restart the computer. Recently, I started restarting lightdm / gdm, as it is quicker. Is that a sensible thing to do? I use the following command (in tty): ...
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2answers
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Do logins by the gdm (or lightdm) user in auth.log mean my system is breached?

Please look at this auth.log (from Ubuntu 14.04) I have provided and tell me who this gdm user is and why there are all these unauthenticated logins? I am freaked out; please help! Here's the ...
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83 views

Theme lightdm-gtk-greeter

There are a couple of question that deals with changing the icon theme / desktop theme of the lightdm-greeter. I wonder if it is possible to change other parameters of the greeter in order to be ...
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28 views

Ubuntu login screen

I have installed lxde desktop environment for my Ubuntu 14.04 and then afterwords I delete it. Then my old lightdm unity login screen changed to this one ...
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1answer
298 views

How to adjust DPI in 14.04

I asked about fixing DPI in 12.04. The 14.04 release notes list "Support for High-DPI screens and desktop scaling." Post upgrade, it seems that nothing has changed. Similar symptoms from my previous ...
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108 views

Lock screen does not display all users (ubuntu 14.04)

When I lock my screen using Ctrl+Alt+L, I am not able to see other users listed within the lock screen so I can switch instead. The lock screen shows only my name as an option for login, however I ...
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1answer
127 views

Ubuntu 14.04 update lightdm broken

I think the screenshot explains it better than I can. I'd like to post a helpful bug report on Launchpad, but how do I even explain this? This seems to have come on as a result of a failed update - ...
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1answer
632 views

How to get Pantheon Greeter on Ubuntu 14.04 instead of Lightdm

I'm running Ubuntu 14.04, how can I replace the lockscreen with the one on Elementary Luna (Pantheon-Greeter). Thank You!! Edit: Can anyone do it and confirm it works completely?
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59 views

Login screen freezed after resume

Today I came into strange problem. Yesterday, as always, I suspended my Ubuntu 14.04 (Unity) laptop for night. Today as I open it up it shows login screen (lightdm) but it is impossible to write ...
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2answers
62 views

Are desktop files stored in hard drive? [closed]

Hi I'm new to Ubuntu and I do not know much about this OS. The problem I am having is getting access to files on the desktop without booting the OS, I am currently running a 14.04_live according to ...
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32 views

Xhost disabled in Ubuntu 12.04 LTS

Trying to fix some issues with my graphic chip (intel HD4000) and lightdm about very frequent system hangs a while ago (several months), I somehow disabled xhost program, so everytime I log in my user ...
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56 views

Ubuntu 14.04 login goes back to login screen

When I login it again come back to login screen. I tried tty1 terminal to reconfigure lightdm but it does not connect to Internet. While connecting to Internet it shows the error message path ...
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29 views

Login Loop after fsck to Fix Not Booting (common fixes not working)

In the last month my Thinkpad X201 running 14.04 hasn't booted multiple times and drops into initramfs. Each time I had to use a live usb and fsck to fix errors, so it would run again. This usually ...
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13 views

Graphics and input settings load delay on boot

Whenever I boot my system, after loging in, it takes half a minute for my display settings and my input settings to load. This means that for the first 30 seconds I have the default resolution ...
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66 views

Black screen on bootup

I've had a problem since loading ubuntu alongside my windows install now. I'm running 14.04 and using Gnome 3.12 shell and Lightdm. When booting up the Ubuntu splash screen looks normal and pushes me ...