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

learn more… | top users | synonyms

0
votes
0answers
140 views

Ubuntu login fail to start lightdm session

I have a nightmare with my Ubuntu account login. Everytime after I typed my account password, the screen flashes and then back to login view. However,I can login in terminal via Ctrl+Alt+F1. then ...
2
votes
0answers
119 views

How can I add a custom python indicator to the unity-greeter login screen?

I've installed a custom indicator called PRIME Indicator and it shows up in the top panel (next to date time etc) after I login. I would like to show the indicator before login on the unity-greeter ...
5
votes
4answers
275 views

Cannot unlock session if user has no password

I created an account with no password for my 3 year old child. After some time of inactivity on that account, the session locks. Then I cannot unlock the session. Trying to unlock with an empty ...
0
votes
1answer
801 views

Changing window manager in LightDM

I'm using Ubuntu 14.04 and wanted to change the default Unity/Compiz window manager. I've went through the LightDM documentation and saw a related question, but I still can't make it work (I tried to ...
1
vote
0answers
39 views

Boot-repair issue with Ubuntu 14.04

My VPS works absolutely fine but has had a few issues with booting since I upgraded it to Ubuntu 14.04 from 12.04. It will not boot after being switched off. So I Googled the problem and it looked ...
0
votes
1answer
1k views

Changing X display manager

On my Ubuntu 14.04 there's gdm and lightdm installed. Is it recommended to have both installed? How can I check which one's active and how can I change them? I have some troubles with the Ubuntu ...
0
votes
1answer
823 views

LightDM: user-session doesn't work, nor do multiple sessions at start

On my media center (XUbuntu 14.10), I am trying to autostart Kodi in the focussed session and also start and autologin xfce4 in a second unfocussed session (I hope Steam In-Home Streaming doesn't need ...
0
votes
1answer
437 views

VNC over lightdm results in blank screen

I'm trying to set up VNC over lightdm so multiple users may log in to the server and have their own session each. I'm using TightVNC Viewer from a Windows machine to connect to the Ubuntu virtual ...
2
votes
0answers
167 views

Changes in /etc/lightdm.conf.d/*conf or /etc/lightdm.conf makes any difference

I am trying to make my lightdm use a correct setup of my displays both for login and session. I have most likely misunderstood something here, but by reading the wiki I did the following: I have ...
0
votes
0answers
42 views

cannot lock screen, create a new user or switch users in unity

I tried lubuntu-desktop once as an alternative desktop environment alongside unity and then removed it, however from then on I have to login twice and any new users created fail to login, the lock ...
2
votes
1answer
2k views

configure lightdm greeter in ubuntu 14.04

Earlier I was using the [not ugly] old styled login screen. Recently have installed lightdm greeter to change my login box position from left to center. Now, I have to configure lightdm to disable ...
1
vote
0answers
39 views

unsquashing a liveUSB, I found that the filesystem is not identical to the one loaded from liveUSB

so I have ubuntu studio 64 in a live USB and I wanted to change the way it boots. Namely, the liveUSB boots directly to a live user session bypassing lightDM. I want to change that and as I figured ...
1
vote
0answers
81 views

how can i boot to normal user on live USB

I installed ubuntustudio 64bit 14.04 on a usb stick. The aim is to use it as a normally installed session but with the added benefit of keeping all my OS in a usb and using any pc available. This ...
3
votes
0answers
133 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 ...
2
votes
1answer
229 views

Problems with login screen kubuntu, lightdm

Recently, I installed xfce on my kubuntu pc, when I got tired of it, I uninstalled it. Here is where my problem appears, the login screen doesn't get back to normal kde login screen, it becomes a ...
0
votes
0answers
88 views

Program with xserver +lightdm not working

I have installed xserver-org and lightdm on Ubuntu 14.04 server. I then created a desktop entry to run a program such as Firefox once I login. A couple of issues I'm having. My machine is headless ...
0
votes
1answer
130 views

Change Display Managers Without Input

so I am working on a project which will be a Lubuntu install without touching anything during the install process (except after a few seconds of quick input), and I want to uninstall lightdm and ...
1
vote
0answers
564 views

GUI login problems in Ubuntu 14.04LTS

my problem is very similar to that presented here: Ubuntu gets stuck in a Login Loop I am using Ubuntu 14.04 LTS. I can enter my account in GUI just for 1-2 seconds after that I am returned back to ...
0
votes
0answers
60 views

Warm boot vs cold boot: How to compare logs when I can't log in for one?

I have a question that is tied to a previous issue and looking specifically for how to troubleshoot: LightDM won't start after Grub - Cannot Access TTY unless closing and re-opening lid I have ...
1
vote
0answers
66 views

Chrubuntu 12.04 Desktop Won't Load

I'm on a Lenovo X131e Chromebook. Upon start up I am able to move the mouse pointer around a black screen with a blinking text cursor in the top corner. If I switch to a terminal and then try to ...
0
votes
2answers
286 views

How to change Ubuntu login screen background without dconf-editor?

I am trying to change the Ubuntu login background which should be the same as the wallpaper, without installing dconf-editor or additional software. Is is possible?
0
votes
0answers
240 views

Ubuntu 14.04 stuck in login after upgrade

After upgrading from 12.04 to 14.04, I'm not able to login anymore (guest account doesn't work too); there's a loop (it goes back to the login). What should I do? I've already read Ubuntu gets stuck ...
0
votes
1answer
142 views

Ubuntu 12.04 in login loop as lightdm-session says upstart not found

I tried to install a package systemd (this replaces upstart in Utopic 14.10 and up). See my yesterday question How to Re Generate All Gnome Schemas for Ubuntu 12.04. The result was that it didn't ...
0
votes
1answer
63 views

error opening display after lightdm stop

I'm trying to install CUDA and following these instructions. Eventually I get to a point where I need to run: sudo service lightdm stop At that point the GUI shuts down but instead of a terminal ...
0
votes
0answers
136 views

Xubuntu and Ubuntu's display managers coexisting

I'm running Ubuntu 14.04. I installed Xfce via the 'xubuntu-desktop' package to try it out. After a couple days I decided to get back to Unity so I removed it and several other packages it came with. ...
0
votes
1answer
79 views

LightDM does not ask for login password

I have an auto-logged in non-sudo user called "screen". I have a passwordless sudo but login-protected user called "support". I'm pretty sure this was working fine before, somehow maybe the latest ...
2
votes
0answers
52 views

When I turn my monitor on after it has been off, it does not display anything

I am running Xubuntu 14.10 on a desktop and use LightDM. As I said in the title after I turn off my monitor (with the computer already on) and then turn it back on again there is no input from my ...
0
votes
0answers
137 views

14.04 : Cinnamon goes straight to Fallback on Nvidia card after reboot

A couple of days ago I did an update on my machine. apt-get update After the update proceeded I rebooted the machine and tried to log into cinnamon. Straight after the login I get a message saying ...
1
vote
1answer
195 views

Xubuntu 12.04 desktop won't start

My computer started hanging on the greeter screen. I cannot start a local X session, but can still select rescue from GRUB and boot to a tty. In addition sshd and the xrdp server seem to work normally ...
0
votes
0answers
316 views

Kubuntu 14.10: after 12 Dec 2014 update X doesn't start

After the update X doesn't start complaining a not valid xorg.conf file As a workaround at every reboot I do: sudo rm /etc/X11/xorg.conf sudo startx I also opened this bug: ...
0
votes
2answers
212 views

Configure and run indicator-sysmonitor on boot at login prompt

I want to use indicator-sysmonitor to display an indicator showing that the network connection is up amongst other things immediately at boot on the lightdm login screen. I followed these steps to ...
2
votes
0answers
51 views

Can this error cause computer to reboot

There are 11 computers in my classroom. Yesterday they began to reboot randomly, all of them. I reinstalled Ubuntu and got this error everytime. Also, after reinstalling the rebooting continued. Can ...
0
votes
0answers
146 views

Unity - desktop has stopped working after Unwanted Nvidia display driver update

My computer has an Intel i3 processor and no other inbuilt GPU. However, the nvidia-* latest got installed on the computer during an update process. I used sudo apt-get remove nvidia-* to remove all ...
0
votes
0answers
69 views

How to change screen locker in KDE?

Recently I start using lightdm in pair with google authenticator for two-step authentication. All works fine, but default screen locker in KDE doesn't configured to use 2-step auth. So, I want to ...
0
votes
1answer
212 views

Lightdm-gtk-greeter centre image

I use lightdm with lightdm-gtk-greeter. Is it possible to modify the greeter so the login screen will centre a wallpaper image that is smaller than the screen? The image I use gets stretched to fill ...
1
vote
1answer
121 views

Cannot change GTK and icon after changing LightDM greeter

I changed my LightDM greeter and suddenly I cannot change my gtk or icon theme. The dconf settings are there, but the system is not responding to changes, nor are the themes being used by all ...
0
votes
0answers
32 views

How to get Plasma Next option in Login

I installed Plasma Next on Kubuntu 14.10 and chose lightdm. Upon restart I'm not getting option to chose KDE Plasma Workspace/Unity/Plasma Next as my Desktop Environment. It directly enters Unity. ...
0
votes
0answers
63 views

Errors with Encryption Keyring and X when Booting in Ubuntu 14.04

I am running Ubuntu 14.04 and I know all of my passwords, but I'm having trouble logging in and error messages I've Googled have not led me to a solution. When I came home the desktop on my laptop ...
0
votes
0answers
256 views

lightdm multiple virtual terminals single seat

LightDM configuration semantics for multiple seats seem to have changed in Ubuntu 14.10. More, it seems there has always been ambiguity regarding whether multiple seats necessarily means separate ...
0
votes
1answer
207 views

Unity has disappeared from lightdm after updating gnome-shell

This morning I ran sudo apt-get upgrade and it prompted me to update gnome-shell. I never really use the gnome desktop environment, but I figured I might as well keep it up-to-date. After restarting ...
0
votes
1answer
167 views

nvidia and intel low-graphics mode error

I have ubuntu 14.04.1 64bit installed with intel and nvidia video cards . I'm using xorg-edgers ppa to graphics drivers . Today i got an update for the drivers (i think it was the mesa drivers) . when ...
0
votes
0answers
52 views

Restore notification style in Unity after installing Lubuntu

I installed kubuntu-desktop on my 14.10 ubuntu system. I managed to use update-alternative to set plymouth, and configured lightdm to get the default ubuntu look. The only problem that remain is that ...
0
votes
0answers
87 views

Could not write bytes : broken pipe Ubuntu 12.04

I am getting could not write bytes : broken pipe error when boot my laptop with Ubuntu 12.04. I know there are a ton of question similar to this here but none of which I tried solved my problem. I ...
0
votes
1answer
4k views

What to do when nothing seems to fix Ubuntu 14.10 stuck after log in?

So I run Ubuntu 14.10 on HP Pavilion g6, i5 and with Radeon HD6500. Yesterday Ubuntu crashed and since then I can't get anyfurther than the log in screen. Ubuntu simply stucks with only the background ...
1
vote
1answer
186 views

Wake from suspend, password field missing?

Ubuntu 14.04. Brightness & Lock settings are to turn off screen after 10 minutes and lock screen after 30 minutes. 50% of the time, when I wake my computer from suspend, the login field to enter ...
0
votes
1answer
57 views

X11 doesn't show windows edges, task bar nor anything

I've got a problem with X11 as when I turn on my computer, after the system has launched, I see only my desktop. I don't see the upper nor left bar. When I doubleclick a file on my desktop, a new ...
0
votes
1answer
572 views

How to change Ubuntu's default login screen for gnome ubuntu login screen?

I'm using 14.04 LTS with unity, but i removed the ubuntu desktop and installed the gnome ubuntu desktop instead, since unity has given me some errors... The thing is, im happy with gnome, but the ...
0
votes
0answers
224 views

Can't log in Ubuntu 14.04 LTS

I have been using Ubuntu 14.04 for a while. After a reboot this morning, I can't log in from the login screen. It flashes back to the login screen after the correct password is entered. I have ...
0
votes
0answers
93 views

rk3288 shows only splashscreen

I've installed ubuntu 14.04 from t-firefly to my rk3288 micro-computer. LightDM was there and I wanted to turn off its autostart and wrote "manual" to /etc/init.d/lightdm.override. After reboot I ...
1
vote
1answer
374 views

nVidia on Ubuntu 14.04 black login screen (not freeze)

Recently I installed STEAM on my Lenovo IdeaPad Y510p (core i7 + nVidia 755m) laptop running Ubuntu 14.04. I want to use nVidia for sessions when I play games and Intel for everything else. Therefore ...