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

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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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26 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 ...
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37 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. ...
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42 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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82 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.
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43 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 ...
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1answer
40 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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187 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 ...
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2answers
430 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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37 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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25 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 ...
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1answer
497 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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1answer
166 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'...
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43 views

Boot process stopped after installing gdm

I have installed gdm to replace lightdm, but after rebooting, I am greeted by a black screen. Switching to another TTY, shows me the following message: A start job is running for Hold until boot ...
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391 views

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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2answers
340 views
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1answer
143 views

Running a bash script from an xsession to toggle startup programs

So I've got an interesting challenge in front of me, running Ubuntu 16.04. I originally created a .xsession file that ran Exec=google-chrome --kiosk http://some-url.com to boot as a kiosk device. ...
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1answer
68 views

Question about Kodibuntu auto-login default session location? [closed]

My apologies for mistakes in terminology. I only know enough to be dangerous. OK so I'm running live USB Kodibuntu. I have a casper-rw which keeps data from session to session. The OS automatically ...
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1answer
203 views

Upgrade from 15.10 to 16.04 now Simple Desktop Display Manager (SDDM) won't start

After upgrading from Ubuntu 15.10 to 16.04 via do-release-upgrade I can now only boot into TTY mode. The boot log shows: [FAILED] Failed to start Simple Desktop Display Manager. See 'systemctl status ...
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112 views

Plymouth to LightDM smooth transition

I have set the grub background, plymouth splash background and desktop wallpaper all to the same image just to give a more uniform boot process. The only issue I have now is the transition from ...
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23 views

Ubuntu virtual terminal exits too quickly for me to type

I've been having a nightmare trying to install an NVIDIA GPU on my desktop computer (Ubuntu 14.04). I inserted the card and tried following various instructions online, but that did not work and I got ...
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1answer
72 views

How do you use the TTY (without X server) on one screen, and X on the other?

While playing around with Ubuntu, I turned off the window manager. Unable to operate the terminal in xserver, I jumped over to a bash command line (Ctrl-Alt-F1), and relaunched lightdm. After having ...
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1answer
68 views

How to make Greeter/Login Wallpaper Match Desktop Wallpaper

So the default behavior of the Ubuntu login screen was that it would match match my Desktop wallpaper. So for example, if I was on the login screen and I clicked between my username and the Guest user,...
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40 views

How to add Unity option to Kubuntu login screen?

I have installed Kubuntu on a machine, and decided to install a few desktops so I can change depending on my mood. However, when I ran sudo apt-get install unity, it installed fine, but when it ...
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25 views

How to boot desktop into text mode [duplicate]

Is it possible to have a DE which only opens the terminal, like the way it is on an ubuntu server distro?
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58 views

lightdm and gdm not working in Ubuntu 14.04

I have a problem with Ubuntu 14.04, the graphical mode can't started in the log screen : starting LightDM display manager [fail] then I tried to use gdm, starting gnome display manager fail, i don't ...
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1answer
109 views

What file or setting controls user backgrounds in unity-greeter?

Ubuntu 16.04 LTS Xenial The unity-greeter background image for my user stopped inheriting my Unity desktop background. Whatever image I use, it is still stuck on Flora... Selecting guest user changes ...
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133 views

Need script to logout after 20 minute idle time and then auto login

I have a public internet terminal at my workplace. Often, users will simply walk away from the machine without logging out (of email, facebook, etc.) -- I want to make the end-user experience more ...
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2answers
207 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 ...
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1answer
17 views

fixing things from a LiveBoot session

I switched from LightDM to something else when I was messing with my system late at night. When I rebooted, the screen went black. I'm currently booted from Bhodi Linux on a flash drive, and am ...
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70 views

Scripting dconf changes

I've written a simple script for our Ubuntu machines at college which sets some dconf overrides to set the theme, background etc. However I cannot seem to get it to correctly set the login screen ...
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1answer
40 views

Not asking for password in GUI for login even when there is a password set in Ubuntu 14.04

I have a user which has no sudo rights. I have set the password for the user using cli. But when I logout and try to login again, the user is not asked for a passord and logs in as soon as the ...
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1answer
606 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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28 views

Can't find session 'default' for desktop log in

I have a puzzling issue on a newly installed 14.04.4 LTS. I configured it for nis and it works when I ssh into the machine. But if a user tries to log in on the desktop it fails with the "Can't start ...
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30 views

How can i set xscreensaver to work directly from lightdm login screen?

Trying here to enable xscreensaver to work directly from lightdm login screen. It's currently work only from a logged session, when it is on login screen when time pass, it blanks out the screen, ...
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1answer
149 views

Login Loop for Guest Account only on 16.04

I have some 40 Dell Latitude E6410s I maintain in my classroom for student use. I have successfully setup and used special 'guest' accounts so the directories are wiped between uses. This scheme ...
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55 views

Using lightdm webkit greeter in 14.04

All guides indicate I need to change a setting in /etc/lightdm/lightdm.conf, and that's how I did it last time, but there seems to have been some changes since that was written. lightdm.conf doesn't ...
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235 views

Cannot switch to Gnome on 16.04

I just installed Ubuntu 16.04. I have it already on my laptop with Gnome 3.20 working. My desktop pc has an i7 4790 and AMD HD 7950 installed the Gnome 3.20 and rebooted. Now I have the icon to switch ...
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0answers
57 views

Two graphics drivers at the same time?

I have an Intel integrated graphics card "Intel cooperation skylake integrated graphics (rev 06)" and an Nvidia GTX 960m on my laptop. I wanted to use the skylake integrated graphics card for my ...
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50 views

Can not login .XAuthority seems broken

I know that this is a common error and I have read many threads in this regard. I get to the logon screen and type in my pw and it hangs for 20 seconds or so and then displays the log screen again. ...
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62 views

Login problem after Hibernate with Dell E7440

Yesterday I installed Xubuntu 16.04. It uses the lightdm display manager to log in. This works. The issue: I use a Dell Latitude E7440 with Docking station. Most of the time, the screen of the ...
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1answer
190 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
142 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
198 views

Takes a very long time to log in to gnome 3.18.4 in Ubuntu 16.04

I just installed Ubuntu 16.04 via update from 14.04. I'm using gnome-shell 3.18.4. When I want to log to my gnome shell session the login is very slow, it takes more than 1 minute where the the only ...
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0answers
397 views

Ubuntu 16.04 Xorg / lightdm crashes on boot with GTX 970

When I boot my Ubuntu 16.04 liveUSB on my desktop (GTX 970, i5 4440) I get to LightDM and then everything falls apart. My mouse freezes and my main monitor (connected to the GTX 970) starts blinking ...
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1answer
1k views

Ubuntu 16 Stuck in Login Loop after Installing Nvidia 364 Drivers

This didn't start out as a problem with the login loop. I was attempting a clean install of Ubuntu 16 and using the new feature that allows it to detect proprietary drivers for me. I started off ...
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1answer
776 views

Ubuntu 16.04 stuck at LightDM login screen

So I just installed Ubuntu 16.04 yesterday. Today I wanted to login to the computer and suddenly it doesn't log me in anymore. I can enter my password, but when I hit return to log in the screen goes ...
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25 views

How to make user automatically log in in Lubuntu 16.04? [duplicate]

How do I make a user automatically log in in Lubuntu 16.04?
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24 views

shutdown or reboot after entering wrong password x times

My laptop is configured with a bios password to unlock the encrypted ssd. Most times I don't shut it down and use just suspend/resume - this of course leaves the ssd accessible. To increase security ...
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1answer
445 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 ...