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

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Unity-greeter or lightdm-greeter-gtk change password on login screen

I'll install and configure Ubuntu 14.04.3 with ActiveDirectory and All ok, but I can not configure the change password on login screen. Message with warning about expaire password display, but ...
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1answer
335 views

lightdm crash back to login Ubuntu 15.10

I tried the solution posted in Ubuntu 15.10 random lightdm crash but when I got to the step of reinstalling lightdm* a couple errors came up (I didn't write down what they were). Now I'm stuck in ...
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66 views

Lock screen automatically in lightdm

I have a custom install of Ubuntu with lightdm and openbox. I want to automatically lock my screen when it is inactive for a set period of time. I can lock my screen with dm-tool lock But I don't ...
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362 views

Lightdm won't start anymore - Intel i915

I gave a try to nvidia-prime. Worked at first had my desktop running on nvidia card, but after reboot, it stopped working so I purged the nvidia packages and I am now stuck with a lightdm not running ...
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129 views

How to set default desktop enviroment 15.10

Things appear to have changed from 14.04. Then, my last desktop environment was remembered and I did not have to select one each time from the greeter login. One user defaulted to cinnamon, another to ...
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1answer
87 views

Lightdm doesn't show wallpaper/background and colors are wrong

The symptoms of the problem are that only default Ubuntu wallpaper is shown in the login screen, the password field, host name (in the top left corner) and menu (in the top right corner) have an ugly ...
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0answers
37 views

Crash X manually

I'm working on a the famous freezing of X server. I've already created a question about frozen X server detection As I don't have relevant answer yet, I'm wondering if anyone knows a way to ...
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0answers
109 views

Cannot make it to login (gdm/lightdm bugs) after Nvidia driver update tentative

I used my girlfriend's computer which runs on Ubuntu 15.10 (wily) and wanted to update the Nvidia GPU. I did install the last driver released on the Nvidia website corresponding to this Geforce GT720. ...
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1answer
149 views

Ubuntu 14.04 LTS 64 bit login loop

I have Ubuntu 14.04 LTS 64 bit. So I changed my password through recovery mode, and now it is in log-in loop. Whenever I put Xauthority it says "No such file or directory" When I put in my actual ...
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1answer
51 views

Quit LightDM & launch a new x-session with an alternative xorg.conf

I'm using Ubuntu 15.10 with the following configuration: LightDM, XFCE, set to one screen across two physical monitors running from two outputs on a single NVIDIA card. This is my normal environment ...
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2answers
254 views

Ubuntu 14.04 stuck in login loop after update, nothing seems to help

I updated my ubuntu 14.04 after it was being unused for 4 months. The updating took enormously longer time than usual, and after that the computer was very slow. I rebooted the computer and now I ...
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2answers
201 views

can't start lightdm without systemctl

i'm running ubuntu 15.04, nvidia card 970gtx, drivers installed manually using nvidias script. i have fake raid 0 to dual boot windows 7 and ubuntu. i also have 4 drives using mdadm for raid 5. ...
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38 views

Lightdm Webkit Greeter, can't use it

I have Ubuntu 14.04, and ATI HD 7870, using fglrx-updates driver. I just installed lightdm-webkit-greeter to use some themes. However, to activated all the guides I saw said; change the: ...
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1answer
102 views

How can I run a local command (to run a script) on (just before) log out of a Unity session?

At the risk of posting a duplicate question: How can I run a local script (as the current user) when I log out? I read (and tried) among others: This one (Marton's version), which did perfectly ...
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2answers
211 views

15.10 lightdm broken - gdm works

After some updates to my system lightdm seems to be broken (can't get a session with lightdm to work, always ending up in low graphics mode at boot). If I chose gdm it however works. But I would like ...
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52 views

How do I restrict a user to a specific thin client?

I am using 10 thin clients on Ubuntu 14.04 LTS with an xdmcp server. All thin clients display all user names and allow any client login with any user account. Even two or more thin clients login with ...
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1answer
92 views

Xubuntu lock screen appearing twice

When I leave my machine for an extended period of time, I return to find the screen locked (by light-locker). I can then enter my password, and it is accepted, but then the lock screen is displayed a ...
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87 views

Fully encrypted system boots to Terminal login instead of GUI

When I switch on computer, because I have it encrypted, it always first asks for my passphrase in the GUI. I enter the phrase, then still in the GUI it normally asks for my password, and goes to the ...
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164 views

Ubuntu 14.04 LTS fails to boot into GUI

I've been using Ubuntu 14.04 desktop for about 6 month when the system locked up. Couldn't switch to another session or kill any processes, etc. only the mouse was responsive. Before it locked up I ...
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56 views

How can I start LXDE right after installing it?

On a fresh Ubuntu Server 15.04 I ran (from a Vagrant provision script) apt-get install lighdm lxde After this, I expected service lightdm start to display the session opening dialog. But ...
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234 views

How to change default window manager to Lubuntu from openbox?

After crashing my Lubuntu 14.04, my PC shows me an "ugly" login-window and then loads a desktop environment (or more precise probably a window manager) that has a grey background and a context menu ...
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90 views

Ubuntu 14.04 Login Loop - need to create new user after every reboot?

I'm running ubuntu 14.04 on a virtual box within a windows 8 host machine. I've had the misfortune of stumbling upon the dreaded ubuntu 14.04 login loop after a sudo apt-get upgrade command, and have ...
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76 views

Cannot install lubuntu-desktop because of lightdm-gtk-greeter

It appears as if my lubuntu-desktop was deleted from an autoremove. Now I try to install the package via terminal. When I do so it says that I need to install lubuntu-default-session because of ...
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29 views

Start X After Root Autologin Via Mingetty

I am currently running Lubuntu 14.04 x86_64 on an old Pentium 4 desktop destined to be a home theatre PC. As a consequence of multiple failures while trying to configure LightDM to autologin I ...
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2answers
258 views

Problem with nVidia GPU, not working lightdm

I'm trying all day to get my nVidia GT650M working, but without success. I tried to switch graphics card in nVidia Prime, but after logout screen goes black and Light Display Manager won't start, ...
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92 views

Ubuntu 15.10 Desktop x86-64 Enabling manual login leads to “The system is running in low graphics-mode”

EDIT: If you want to see the pictures properly embedded, look at my post at an other forum (was advised to ask here again): ...
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103 views

Ubuntu 15.10 - Change loading screen [duplicate]

Well, I´m trying to change that awful purple screen with the white/orange dots on my Ubuntu 15.10 while it is loading. Not the login Screen or background. That is already solved. I would like to see ...
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2answers
94 views

mdmsetup returns exit status 1

I'd like to install and use mdm over lightdm with Cinnamon. I've installed mdm, but gksudo mdmsetup just opens a dialogue requesting authentication, then immediately exits with code 1. There's ...
3
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1answer
212 views

How can I remove AbiWord?

I've just installed Lubuntu, and then I threw Cinnamon on top of it. Every time I log into any session: gnome, cinnamon, lxde, abiword opens immediately, as if I had told it to. I'm not a fan of this ...
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1answer
194 views

How to purge SDDM/Plasma completely

I recently installed KDE just to give it a go. I didn't really like it, so ran sudo apt-get purge kubuntu-desktop plasma-desktop. That seemed to fix it initially, after two reboots everything was back ...
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26 views

lightdm: part of screen is missing

I have a problem with my pc that whenever lightdm comes up, one side of the screen is missing. I though it was the resolution of the image and it does not scale properly to the screen so I spent ...
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93 views

Unity Greeter Background NOT Changing!

So ever since I upgraded to 15.04 from 14.04.. The unity greeter started using the wallpaper from my unity desktop as its background.. I have tried using ubuntu tweak but it blinks my custom ...
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69 views

Desktop not responsive after ubuntu-gnome-desktop installation (Ubuntu 15.10)

In order to use gdm instead of lightdm I followed the instructions from this post I could then use gdm but my desktop (meaning the background area) is not responsive anymore and shows the login ...
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1answer
150 views

Two different login/lock screens

I have Ubuntu 15.10 installed and when I first start my computer it gives me the really nice looking ubuntu lightdm login screen but anytime I lock the computer I get the really nasty looking gnome ...
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1answer
68 views

Lightdm greeter - theming of option-button

I try to theme the unity lightdm greeter and I've succeeded in doing so by looking at the source code and the Ambiance .css files. One thing I'm not able to theme however is shown in this short video, ...
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124 views

Ubuntu 14.04 LTS login loop both in unity and gnome

after uninstalling a not-working Chinese input method, I have been experiencing a login session loop problem. After I type the correct password for the login, the screen blinks and comes back to the ...
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127 views

How to get back Unity Greeter? Replace MATE Greeter?

So I installed Ubuntu Mate desktop environment for my 14.04 LTS (Trusty) and I am really liking it but Mate also replaced the Unity greeter which I want back... I searched about how to get back the ...
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1answer
33 views

Lightdm freezes on startup if wait for GRUB

I am on Ubuntu 14.04 on this hardware (with no external/proprietary driver needed). These are the enabled official repositories (all but proposed) and these are the external ones (Google Chrome, ...
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1answer
506 views

NVidia GTX960M in Optimus: Intel driver extremely laggy, NVIDIA driver results in login loop [closed]

I have a Dell Inspiron i7559 laptop (GTX960M + Intel) for which I am trying to install Ubuntu, but I am having a lot of issues with the NVidia graphics. Because of the dependencies of some software I ...
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61 views

GNOME desktop environment not starting

I recently moved from Unity to the Ubuntu MATE desktop environment. I was trying to install the GNOME desktop environment. I followed the following steps: sudo apt-get install gnome-shell sudo ...
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12 views

How to get back Unity Greeter? [duplicate]

So I installed Ubuntu Mate desktop environment for my 14.04 LTS (Trusty) and I am really liking it but Mate also replaced the Unity greeter which I want back... I searched about how to get back the ...
0
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1answer
68 views

Some desktop environments don't work anymore after system changes (reusing `/home` in new install)

After some reinstallation/configuration/partition resizing work (I really can't say where the point of failure was, but see below for details), I ended up with unity not working anymore, a situation ...
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1answer
287 views

Ubuntu 15.10 login loop for all users

On a previously working install of Ubuntu 15.10, I rebooted and am now unable to log in to Unity with any users (main account or guest). I can log into my shell in another tty. I've tried all the ...
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95 views

Ubuntu 14.04 login loop, onboard and update manager does not start as well

.Xsession errors has the following etc/X11/Xsession.d/20desktop-profiles_activateDesktopProfiles: line 31: $ERRFILE: ambiguous redirect Script for ibus started at run_im. Script for auto started at ...
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31 views

Guest login support in lightdm webkit greeter

I'm having trouble getting the guest login option to work in the Webkit LightDM greeter, which is a shame as it's otherwise a superb tool for developing custom greeters. Looking through the source on ...
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1answer
76 views

Lightdm fails to login and redirects

After running a routine update and rebooting, my computer running Ubuntu 14.04 is now completely unusable. The lightdm screen comes up and accept my password, but it immediately redirects to itself. ...
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52 views

Can I connect to a new wireless connection before login?

I am wondering whether it is possible to connect to a new (not saved) wireless connection before login in as a user. I have some lab PCs and the idea is that the students will use their credentials ...
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2answers
123 views

Why is my mouse invisible on ubuntu 14.04?

I'm running a clean installation of 64-bit Ubuntu 14.04 with dual monitors. When I start up the mouse is invisible on the login screen and after logging in. Relogging in does not work. I've googled ...
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1answer
143 views

“Stopping CPU interrupts balancing daemon” after uninstalling LightDM

I'm a rather new Linux user and tried making my virtual server login automatic and while doing so I installed lightdm. I noticed that I got the graphical UI on boot but couldn't log in, so I deleted ...
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69 views

How to change greeter ubuntu

i have installed kubuntu-desktop in my Ubuntu 14.04 and its awesome im liking the new look. i can switch between unity and kde in lightdm unity-greeter screen , but how to replace lightdm with kde ...