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

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Stuck at login screen, help

i've ubuntu 13.10 , when i write my password , ubuntu wait for 3-4 seconds and then show the login page again this error didn't happen after updates, i'm still working to find many solutions but they ...
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329 views

Ubuntu 12.04, 13.04: Cannot login to account returns to login screen [duplicate]

Question In Ubuntu 12.04 and 13.04 (and probably 13.10) I made some changes to my graphics settings. After rebooting when I attempt to login to my account the screen flashes black the bounces me back ...
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4answers
2k views

Unity-greeter black screen on 13.10

I've recently installed ubuntu 13.10 64bit on a desktop (UEFI mode). After the plymouth splash i get a black screen. After some experiments I found a temporary solution: switch back to tty1 and ...
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1answer
47 views

Why can't i log in on Unity? [duplicate]

I'm using Ubuntu 13.04 with Unity. Whenever I log in into my computer, the screen becomes black, then purple (that dark ubuntu-color) and that switches a few times. Between that the screen shortly ...
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22 views

Ubuntu 13.10 some errors after update

Ubuntu has been updated recently and my computer has experimented some problems. Lightdm now is white and sometimes appears a message saying that is running on low graphics mode. Some installed ...
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1answer
309 views

Reboot and shutdown from MATE

When I start MATE 1.6.0 from LightDM in Ubuntu 13.10, I can't reboot or shut down the system or shut it down because the buttons to do that don't appear. The only thing I can do is terminate the ...
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292 views

GDM Autologin not working..

I removed lightdm since I was not able to login as it was booting to a blank screen. Hence I installed GDM and everything was fine. Now when I try to use the Autologin option through GUI interface and ...
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1answer
899 views

teamviewerd not starting with lightdm on 13.10

I've installed the upstart-job for Teamviewer 9. According to the config it should start when dbus and lightdm is running, see: start on ( (started dbus or ...
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0answers
15 views

Blackscreen after upgrading to 13.10 from 13.04 [duplicate]

I have a black screen issue on boot after upgrading from 13.04 to 13.10 without nomodeset kernel option. I am using Intel HD4000 gfx and I have installed intel gfx driver. With nomodeset kernel ...
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44 views

Wierd Noise at Greeter

Using ubuntu 13.10. At every startup, immediately after I log in on the greeter, I hear a strange very short "glitching" sound. I am quite lost here, and this is the only thing that might somehow be ...
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379 views

Nvidia 331.20 X server not starting in lightdm

Before installing the new Nvidia 331.20 drivers on my Ubuntu 12.04 32bit I decided to update the kernel to 3.12.6 then I start to run the Nvidia update script. So I switched to terminal mode turned ...
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2answers
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How to return the login screen of the original unity ubuntu?

I've installed the LightDM GTK+ Greeter 1.7.0 as below sudo add-apt-repository ppa:lightdm-gtk-greeter-team/stable sudo apt-get update sudo apt-get install lightdm-gtk-greeter ...
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2answers
1k views

Default login screen missing, how to revert?

I installed some KDE stuff by mistake. After removing it, my login screen now is quite different; has a white background and the user icons+input appear in the centre. [note that I have tried sudo ...
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0answers
43 views

Desk top background different than screen lock image [12.04.3 from 10.10]

Upgrading from 10.10 to 12.04.3 is quite a jump. So far so good with a simple question. In 10.10 my desktop background and my lock screen were not equal. If I remember correctly the password lock ...
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1answer
377 views

Ubuntu 12.04 boots to login screen but (I think) X.org crashes on login. Help Appreciated! [duplicate]

I've been running Ubuntu 12.04 since it's debut in 2012 without a single problem. Today I just ran sudo apt-key update && sudo apt-get update and then I rebooted my computer. After rebooting ...
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1answer
2k views

lightdm and startx fail to start graphics mode; traces of Nvidia driver are involved

My Ubuntu 12.04 system boots to a text mode login prompt (virtual console #1) since I upgraded the kernel (using Ubuntu's automatic upgrade system). I was using an Nvidia driver that worked well until ...
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3answers
2k views

How to run greeter/login script with lightdm

Is there a workaround to run a lightdm script? The one in the docs doesn't work. Anything placed there will prevent X from working. The script I would like to use is my KVM utility synergy. I ...
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0answers
266 views

Can't start gnome-flashback or unity using Xvnc + XDMCP

I configured my Ubuntu 13.10 using this article on IBM's website. Now I can connect to LightDM, select user and enter password, but DE doesn't start. I can see the logged-in user using who command. ...
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1answer
125 views

How to enable unity-greeter in Ubuntu 12.04?

If you want a different session for the default, you can modify this option. Manually add the following line in the [SeatDefaults] section of (sudo gedit) /etc/lightdm/lightdm.conf: [SeatDefaults] ...
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1answer
438 views

Another black screen after Nvidia driver installing

I'm quite new on Ubuntu, and this is my firt post here on the forum, even if I read it a lot. I've installed the lastest Nvidia driver for my Graphic Card (a .run file), I've followed Nvidia ...
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1answer
72 views

Login credentials stored somewhere?

What happens to login credentials after I authenticate with lightdm? Is there are process that stores them? Would this be something that PAM caches somewhere? Would lightdm hang on to them? The ...
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0answers
50 views

Why my monitor never shuts down when on the logging screen (ubuntu 13.10)?

Why my monitor never shuts down when on the logging screen (ubuntu 13.10)? This problem arrived after the 13.04 to 13.10 upgrade. Since then,I did a fresh install of Ubuntu 13.10 and the problem is ...
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597 views

I can't login after install fglrx 13.10

I installed fglrx following the instructions on help.ubuntu.com and am entirely unable to login, I get the login screen, enter my password and get a blinking terminal screen then logged out/sent back ...
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0answers
69 views

Login errors in .bashrc in 13.04

I just upgraded to 13.04, and suddenly I get xsession errors in my .bashrc on login. There is nothing wrong with the .bashrc file--I can source it from a terminal login, and after I get into the ...
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1answer
532 views

Ubuntu vnc4server no working session only terminal

So I've trid to get xrdp working on Ubutnu Server 13.10 which meant a lot of messing around with lightdm and gdm. So after giving up on xrdp i switched to vnc. I installed vnc4server purged lightdm(as ...
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1answer
561 views

Edit the Unity-Greeter theme

I am trying to get rid of some of the indicator icons on the Lightdm login screen (or maybe just get rid of everything). No luck so far. The file I am editing is @ ...
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1answer
1k views

Can't use startx with lxde?

I use Lubuntu 13.10 and start default with "text". When i need to use GUI, startx didn't work, but "service lightdm start" is worked. How to use startx with LXDE? Thank You!
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1answer
250 views

black screen on booting

I've been working with Ubuntu on my lenovo for awhile. after heavy using I started to face the black screen when I reboot. Cursor at the top left blinking with the sound of rebooting. I still see the ...
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2answers
4k views

Type password into login screen, hit enter - nothing happens

I first install Ubuntu 13.10 a few weeks ago and its been going great. I'm still pretty new to Linux, so I haven't been doing a whole lot. The past couple days I've tried installing LAMP, then ...
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4answers
4k views

How to uninstall lightdm?

I removed Unity from my computer. But still lightdm is showing when I typed sudo dpkg-reconfigure lightdm. I want to remove it. What can I do?
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1answer
1k views

How to reconfigure lightdm? [duplicate]

Last night I installed KDE. But then however my Desktop manager changed into KDM. How can I go back to my default Desktop manager lightdm??
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1answer
279 views

Cinnamon won't run on *Ubuntu 13.10

I tried to install cinnamon on my Kubuntu 13.10, just upgraded from 13.04 without problems. There is this ppa: ppa:gwendal-lebihan-dev/cinnamon-stable Also tried to use the non-ppa-versions (those ...
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1answer
1k views

NoMachine NX Client V4 and Lightdm

I am trying to connect from an Ubuntu 13.10 laptop with Nomachine nx V4 to an Ubuntu 12.04 system with Nomachine nx V3.5 I can successfully connect to the machine, but if I try to connect to the ...
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174 views

After changes plymouth theme ubuntu dont boot

After I changed plymouth theme i cant boot up my pc. plymout show but after few second screen go off. I tried pres CTRL + ALT + 1 and CTRL + ALT + 7 but after that screen turn on but i can see only ...
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2answers
52 views

How to prevent login directly to my defaul desktop?

I installed lxde on my OS. But when I start up my os it doesn't take me to the login screen it just boots to the default DE right away. How do I make it so that I can boot into LXDE right away? Or how ...
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0answers
254 views

How do I fix corrupt background in LightDM?

After a fresh installation of Lubuntu 13.10 the default background image is distorted (the provided image shows a part of it). All GUI elements are displayed correctly. If I then select a different ...
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3answers
7k views

No screens found with usable configuration (Live-CD), boot-repair CLI

I have an MSi GE70 Laptop (Graphics: nvidia GeForce GT650M). At first I couldn't boot nor install. After adding 'nomodeset' in Grub I was able to start the installation. `Try Ubuntu`` just gave me a ...
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1answer
72 views

Assigning sounds on startup and shutdown

As every time i boot into ubuntu it makes sound, i want to assign a custom sound on startup as well as on log off and shutdown. Is it possible??
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0answers
752 views

How to change Login-Screen Background on 13.10 [duplicate]

I tried it with gsettings and was able to deactivate the grid and disable the user backgrounds. But changing the background didn't work, now there's no background shown. The background-picture is in ...
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0answers
35 views

Add entry to login user menu to directly execute command

I want to add an entry to my login menu to execute and run a program with whatever parameter I specify. I'm vaguely aware it is possible, but not quite sure how. As a side note, I want to ...
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1answer
2k views

lightdm/unity-greeter wallpaper will not set

I am trying to set the wallpaper on my login screen, but i cant seem to get anything to stick. I have used gsettings set com.canonical.unity-greeter background '/path/to/pic.jpg' as user 'lightdm'. ...
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1answer
757 views

Login Screen on 13.10 keeps looping back to login (XOrg/NVIDIA problem?)

Upgraded from 12.04 to 13.10. Seemed to go OK, but when rebooted the login screen was very low resolution with trailing mouse, so purged the Nvidia drivers, then reinstalled via PPA as in ...
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1answer
957 views

Only Guest session can be started

While Ubuntu is starting, the following messages are shown and stays shown for long time: * Starting LightDM Display Manager [OK] * Stopping Send an event to ...
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1answer
2k views

How to get the right DPI resolution on Ubuntu 13.04 Saucy?

The physical DPI of my laptop screen is approximately 142 dots per inch as you can calculate from the correct output of xrandr --query: $ xrandr --query | head Screen 0: minimum 320 x 200, current ...
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1answer
96 views

Identification and Authentication methods in Ubuntu

Since I have a very long password, I would like to additionally use an alternative login method. Which other authentication methods are possible in Ubuntu to log in?
3
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1answer
176 views

Lightdm crashes at seemingly random intervals

I installed ubuntu 12.04 LTS around a month ago, and it's a great experience. Except for one thing: Lightdm crashes at seemingly random times, on average 2 times on a normal working day. I have no ...
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1answer
2k views

How to revert back to GUI as the default interface from CLI in Ubuntu desktop?

I was able to set up a text-only UI (CLI) by editing the file /etc/default/grub in Ubuntu 12.04 as per the instructions in: How do I disable X (GUI) at boot so that the system boots in CLI mode? using ...
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1answer
3k views

Wrong display configuration used by LightDM in Ubuntu 13.10 when laptop lid is closed in docking station [duplicate]

Since upgrading to Ubuntu 13.10 on my laptop (actually to Xubuntu as I switched to XFCE) I'm running into problems with LightDM: I use two external displays (one 24" and one 22" display) connected to ...
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1answer
244 views

Tried replacing LightDM with GDM, now computer won't start

After upgrading from 13.04 to 13.10, I was having the problems described in this bug (ie couldn't mount a USB/CDROM and couldn't use GUI shutdown button) ...
6
votes
3answers
4k views

Why is my system freezing when I switch users

Hello I've recently upgraded from 13.04 to 13.10 64bit. I'm running AMD graphics with the proprietary drivers. I have two user accounts. Mine(administrator) and my girlfriend's(standard) My ...