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

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After fresh installation of XUbuntu 16.04, US layout on USB keyboard after each reboot

The built-in keyboard of my laptop is connected to the system as a USB device. During installation of XUbuntu 16.04 from the official 64 bit ISO image, I was asked about my keyboard layout. I ...
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0answers
34 views

Login screen asks for username

I have uninstalled lightdm by sudo apt-get remove lightdm by mistake but I installed it again by going to virtual console and using sudo apt-get install lightdm but the problem now I am encountering ...
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5answers
2k views

How do you protect Ubuntu login?

I seem to remember that a few years back, in order to login on Windows you had to type Ctrl-Alt-Del to get a login screen. The advantage of this was that if you had a cat or child that liked to ...
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2answers
8k 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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0answers
236 views
+50

SLOW Boot and Login times Ubuntu 16.04

Ubuntu 16.04 64 bit taking around 20 sec from Login screen to desktop and around 20 seconds from grub to login screen, tell me which services i can safely disable, i do not use virtualbox and ...
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3answers
500 views

16.04: lightdm(lockscreen) can't connect to wifi. (1) Insufficient privileges

After upgrading to 16.04 (clean install) from 14.04, (so not really upgrading, but you get the point) I notice that lightdm with unity-greeter can't connect to WiFi with network-manager. I get the ...
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1answer
33 views

How do I change the LightDM unity-greeter wallpaper behavior?

Ubuntu 16.04 x86_64 This is not how to change the login screen wallpaper, or how to stop dynamic wallpaper switching. This is how to set the default behavior from "Scale" (or whatever the current ...
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18 views

How to log in to an account which is hidden from the lightdm login screen? [duplicate]

I followed the accepted answer of How do I hide a particular user from the login screen? (the one about modifying /var/lib/AccountsService/users/USERNAME) to hide the user guest-config from my lightdm ...
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2answers
42 views

login loop on ubuntu gnome 16.04

I'm stack in login loop on my first account. I can log in with a guest one and for a new one that I created on terminal. This is the log errors, please help me understand what is causing the sigterm.
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5answers
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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)?
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1answer
53 views

Which display manager is used by default in Ubuntu GNOME 16.04?

I can't find this information, and while trying to install the nvidia drivers for my laptop, I got a message explaining that I had 2 display managers installed, and that seemed strange.
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0answers
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How do I configure Ubuntu 14.04 LTS such that at the login screen, a brief power button press initiates a clean shutdown?

I have a system that runs an up-to-date Ubuntu 14.04 LTS, with Xfce as the window manager and the default login/session manager. (LightDM with the Unity greeter? It certainly looks very similar to ...
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1answer
38 views

Can't get past LightDM

I don't know exactly what caused this, but I rebooted my Macbook Pro and when I tried to log back in to Ubuntu MATE, it took me back to the login screen. I have tried Fn + Ctrl + Alt on all of the ...
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1answer
161 views

How to set the screen resolution in Ubuntu 16.04 64 bit running under VMware workstation 12 player on a Windows 7 host?

I can set the screen resolution manually once I log in using the following command: xrandr -s 1360x768 but I am not able to make it "stick". Every time I log back in, the resolution for a little ...
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0answers
72 views

Cannot login after suspend with multiple monitors

Since I attached an external monitor to my laptop I'm no longer able to login when resuming from suspend. LightDM appears on both screens and shows my name in the login box, but the password field is ...
0
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1answer
55 views

Ubuntu gives a purple screen while booting

I have ubuntu 14.04 with Windows 10. It gives the purple ubuntu screen on start up. If I go to the recovery mode and then resume from there, I go on to the login page where it gets into a login loop. ...
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1answer
64 views

Smart lock like on Android?

Is it possible to configure either LightDM or GDM to automatically log in when my laptop is connected to a certain WiFi? Or even better, to check my location regardless of what WiFi I use?
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2answers
7k views

Intel Haswell strange graphics and boot issue

I build a new system with a Core i5-4570S CPU and I use the internal graphics card. I can Install Ubuntu 13.04 without problem and everything seems to work fine, but during boot and when I turn the ...
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1answer
23 views

Can't login due to kwallet error with nvidia drivers

I have a workstation with 2 nVidia Quadro K620 video cards and 3 monitors. In order to drive all 3 monitors I have to have the nVidia 361.45.11 drivers installed. After applying updates recently, I ...
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3answers
12k views

Ubuntu 12.04 Hangs On Login [closed]

Most of the time when I log in, I after I enter my password, it says login in, and nothing else happens.
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2answers
7k views

Login as domain user Ubuntu 14.04

I have installed PowerBroker aka Likewise-open on my Ubuntu 14.04 desktop. I successfully added the desktop to the domain but I am unable to login as a domain user at login screen. I found some ...
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1answer
302 views

login loop after upgrade to 16.04

I encountered a login loop after updating xenial beta to the latest updates. I tried a lot of things: xauthority or /tmp privileges change Reinstalling nvidia drivers, removing them. reinstalling ...
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1answer
48 views

Nvidia 361.42 and LightDM problem on xubuntu

I am using xubuntu 16.04 with intel and nvidia GPUs. When using intel there are no problems, when doing prime-select nvidia and logging out lightdm will not start with the error message (see below). ...
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1answer
4k 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: [...
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0answers
53 views

Ubuntu 14.04 login loop with lightdm and gdm black screen

I came to my computer a few days ago and found a login screen. Because I have bypassed the login screen in ubuntu settings, this was very strange. I tried logging in and found that I was in a login ...
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1answer
98 views

Ubuntu 14.04 login loop Unity terminated with status 1

I have ubuntu 14.04 and am stuck in a login loop problem despite trying the common answers to the multitude of questions on the site ,none have worked. I can't figure out what's wrong and would be ...
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0answers
90 views

Dual monitor setup: one screen works, the other is a blank backlit screen

I have a dual monitor setup, on Ubuntu 15.10, with LightDM. Both monitors connected by HDMI, one connected to my NVidia GPU, and the other connected to my integrated graphics card. I recently ran into ...
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2answers
4k views

MDM doesn't automatically start

I just successfully installed mdm on 13.04 with this guide, replacing but not uninstalling lightdm: How can I replace LightDM with "MDM"?. However, when I first rebooted, I just got a blank ...
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0answers
38 views

Lubuntu 16.04 doesn't automatically log in if monitor is not plugged in?

I want the machine to automatically log in so that it can start processes as the main user on boot. I have the settings set to auto login: /etc/lightdm/lightdm.conf [Seat:*] autologin-guest=false ...
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1answer
402 views

x11vnc and lightdm on headless 16.04

I need to access a remote xenial machine with x11vnc sudo apt-get install lightdm x11vnc installed the necessary parts. Then, I created a password with sudo x11vnc -storepasswd yourVNCpasswordHERE /...
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0answers
25 views

After login to user account, black screen and no mouse

Super weird bug that's now happened on two completely separate installs (on the same laptop). For a while, everything works great. Then something happens (still not sure what) but I think something ...
0
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0answers
129 views

Ubuntu 15.10 to 16.04 and lightdm display-setup-script: can't connect x server

After upgrading from 15.10 to 16.04 my lightdm.conf command has caused black screen on boot, never reaching the login screen: display-setup-script=xrandr --output DP2 --auto --primary --output HDMI3 -...
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1answer
327 views

Installing Nvidia Graphics drivers on Ubuntu-GNOME 16.04

I am using Ubntu-GNOME 16.04 with GNOME 3.20 When I install Nvidia graphic drivers by sudo apt-get install nvidia-361 , I am facing the following problems. During the installation of Nvidia-361, it ...
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0answers
43 views

Difference between lightdm and startx? [closed]

People are referring to starting a GUI Desktop with the command: startx When using the command, nothing works, just displays desktop without menus/toolbar. I use sudo start lightdm And it loads ...
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0answers
41 views

Black screen slides down and kills lightdm in Ubuntu 14.04 w/ Nvidia card & Brightness Controller

Nearly every other day my monitors black out from the top of the screen to the bottom leaving me with to black screen and no cursor. The black screen takes about 4 seconds to slide from the top to the ...
4
votes
3answers
10k views

Can't login in from LightDM

But just LightDM. It worked this morning, just does not seem to be working this evening. This seems to occurred after a shutdown after a wakeup from hibernation. I always get a password denied sort of ...
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0answers
19 views

Unable to login in any mode (Admin, Guest , TTY1 TTY3) issues after auto update to 14.04

I had installed Ubuntu 12.0 in my external drive long time back (More than 2 years back). I used to use it to boot up in USB mode on my laptop which is running on Windows7. Over period of time I had ...
173
votes
31answers
292k views

Ubuntu gets stuck in a login loop

My Ubuntu is stuck in a login loop when trying to enter my desktop. When I login, the screen gets black and soon after that the login screen comes back. I've read that the problem might be caused by ...
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0answers
33 views

Really, really, really strange login behavior

It's a bit hard to describe this problem, but I'll try my best. I recently installed Ubuntu 16.04 on my family's Intel NUC, knowing that it was probably user friendly enough for them to use. ...
0
votes
0answers
35 views

Can't log in to Unity desktop. Can log in to MATE and XFCE (16.04)

I updated what needed to be updated (required rebooting) and now I can't log in to the Unity desktop, nor the Guest account. I can log in to MATE and XFCE and on TTY1. My account is working. Using ...
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2answers
220 views

Autologin with LightDM on Xenial (16.04)

How to setup autologin on Xenial with lighdm from a terminal (i.e. with an editor)? Here is what I currently have done. First I created the conf.d-dir which did not exist on my installation: sudo ...
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votes
0answers
54 views

Kubuntu 16.04. black screen

I'm using KUBUNTU 16.04. After installing light display manager, when booting it goes to a black screen. Thanks.
0
votes
0answers
31 views

Why is the volume notification showing upon logon?

When logging into Ubuntu 16.04, the login sound of the drums play but for some random reason the volume bar also comes on (on the top right, where its normally placed). The volume bar also suggests ...
37
votes
8answers
143k views

How to change the LightDM theme/greeter?

I downloaded a couple greeters for LightDM, but I have not figured out how to enable them. Is there a way to switch greeter, either by graphical or command-line method?. I do not intend to change ...
0
votes
0answers
23 views

Mouse pointer missing after suspend / Lenovo X200 / Ultrabase / 2 monitors / Displays configuration issue?

since this problem seems to be recurring throughout distros and versions, I looked it up in most boards and of course [...] <- spare rambling about Google skills here. This did not solve it so far. ...
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0answers
136 views

Ubuntu 16.04 login loop wit nvidia GTX 960M

I've been through several questions about login loops with no result for my case. My laptop is a MSI GP62-861XES i7-6700HQ 16GB 1TB GTX960M I've tried with nouveau and several versions of nvidia ...
0
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0answers
32 views

lightdm gdm and slim

I don't have a login screen. Doing sudo service slim start brings me to a login screen which then turns blank. Essentially I do enter my credentials but apparently log into nothing. sudo service ...
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votes
0answers
22 views

Lost virtual terminals + low graphics mode

First, I had low graphics mode. I logged into tty1 and realized that i had lost sudo as well. How any of this happened I have no idea. To take back sudo, I did following in root shell using grub ...
0
votes
1answer
96 views

How to disable ATI discreet 16.04 LTS

I'd like to save battery by disabling the ATI discreet graphics in 16.04 LTS, and use only my default power-saving onboard Intel. Could someone guide me step by step accurately through the process? I'...
0
votes
1answer
49 views

Thinkpad W540 internal input devices not detected in Ubuntu 15.04

The touchpad, trackpoint, and keyboard aren't detected after boot. I know that the keyboard still works because I can use it to navigate the BIOS. Looking at my X server's log, I can see that my ...