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

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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
83 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?
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315 views

How do I repair lightdm to login to plasma-workspace on KDE 4.11.3/Kubuntu 13.10?

After an upgrade to KDE 4.11.3, my Kubuntu 13.10 ceased to login to KDE. There would be a login loop (login, black screen, return to lightdm login). I did attempt to go over other solutions such as ...
2
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0answers
114 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
727 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
2k 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
151 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) ...
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3answers
2k 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 ...
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1answer
1k views

How to let screen time out on sign in screen

I have Ubuntu 13.10 set up on an older PC. If I am logged in as a user, then the screen timeout and power saving mode works as expected. However, if nobody is logged in, the screen never times out, ...
2
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1answer
34 views

How can I list the WM manager sessions available from the command line?

How can I list the WM manager sessions available from the command line? I want to know what sessions are available to pass to thr lightdm-set-defaults utility.
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145 views

13.04 - endless login loop

I don't know what I did other than stupidly typing 'startx' in a ctrl + alt + F2 terminal. Now, when I shutdown, it went to login screen. I thought wierd and tried to log back in and got stuck in and ...
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204 views

After Upgrade from 13.04 to 13.10 missing user in login screen

I have upgraded to 13.10 from 13.04 now after booting (even after updates and rebooting) my user id is not listed. It has a uid higher than the minimum in lightdm.conf. I have the user light display ...
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189 views

Keepass 2.23 nukes lightdm on saucy

Wondering if anybody else has run into this. Brand new installation of Saucy. Keepass 2.23 install through Ubuntu Software Center. The instant I choose File -> Open -> Open File, lightdm crashes and ...
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2answers
223 views

Is it possible to get the normal login screen when resuming from suspend?

I noticed that the login screen that I get when the system first boots up is different from the login screen I see after I resume from suspend. I'm wondering if it is possible to get the same login ...
0
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1answer
225 views

Strange crashes on Zenbook UX31A with Ubuntu 13.10

I'm facing some strange crashes. I initially installed 13.04 on my Asus Zenbook UX31A and used Cinnamon as my preferred desktop environment. After upgrading to final version 13.10 I'm not able to ...
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1answer
833 views

I have to restart lightdm after run

After starting the system, i've a black screen (without any screen backlight), then i have to switch to tty6 (ctrl+alt+f6), login and restart the lightdm: sudo service lightdm restart I'm using ...
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28 views

Ubuntu deleted from lightdm!

Compiz messed up the other day and erased my status bar. This was not uncommon, but this time it wouldnt let me open up the terminial to fix it. After a long time, i found out how to uninstall compiz ...
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0answers
143 views

Screen always on when on Lightdm login [duplicate]

Since updating from 13.04 to 13.10 my monitor when on login screen (Lightdm) is always on and the blank screensaver never works. Gnome Screensaver is activated and is working find when logged in. ...
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61 views

(How) Can X11 Know My Screen Orientation Pre-Login? (Ubuntu 12.10)

Problem: a laptop usually plugged into 2 external monitors, both rotated 90 degrees. At login time, the 3 displays are mirrored, and only the laptop itself is appropriately oriented. I'd prefer to ...
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17 views

Shift ket displays dots in lightdm

I have my first xubuntu 1204 installed. On login my shift keys show dot in the password field. When released, everything is ok, I can use it as usual. I only have to clean the field to enter my ...
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0answers
224 views

How to change default wallpaper presentation?

I'm running the official release of 13.10. Upon adding wallpaper from my pictures folder, the default presentation rendering is automatically switched to zoom. I can then manually change it back to ...
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2answers
1k views

login problem for 13.10, my username does not appear

After upgrading my Ubuntu to the newest version 13.10, in the login interface, my account does not appear. I can login the guest session. There is also a remote login. I have no place to input my ...
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0answers
548 views

How do I disable the guest session in Ubuntu 13.10? [duplicate]

With Ubuntu 13.10 this question on how to disable the guest session no longer works because I think the lightdm config files have changed in Ubuntu 13.10. I know you used to have to add the line ...
0
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1answer
127 views

Lightdm active user indication removed

Just updated to 13.10 and I notice the Lightdm sign in screen on a multi-user system no longer indicates which users are already logged in. Previously active users were listed in bold text.
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1answer
1k views

Replace LightDM with MDM on Ubuntu 13.10

I'm trying to replace LighDM with MDM on Ubuntu 13.10, but there already is package in Ubuntu sources called mdm. It's not display manager, but "The Middleman System"... So the PPA install doesn't ...
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1answer
1k views

Personalize monitor position before login

I'm using multiple monitors. When logged in everything I fine. Left monitor is positioned left and right monitor is positioned right, but before I login the login screen positions them the other way ...
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68 views

Loading of live USB hangs on old PC

I'm brand new to Linux. I created a live USB of Ubuntu 12.04 32-bit with Universal USB Installer. It hangs partway through when it is loading. The last two things seen are: [74.920653] init: ...
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1answer
2k views

How to fix Ubuntu 12.04.3 boot to black screen full of errors in white text, after upgrading on dell inspiron 1501

I am running a Dell Inspiron 1501 I use Linux only. No Microsoft or Apple operating systems (or really anything closed-source). I've only been using Linux for a little over a year but I'm starting to ...
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134 views

How can I change Unity Greeter sound theme?

I can't say I'm a fan of Canonical's taste in sounds and wallpapers... (but I am a fan of clean methods for tweaking - as opposed to overwriting the original files) Thankfully, as of 13.04, custom ...
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167 views

Remote login lightdm with virtualbox vrdp

I recently came across vagrant, and would like to set it up to use as a throw away dev environment. I was hoping to be able to use the lightdm remote login freerdp to login to the desktop but have so ...
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420 views

Issues changing lightdm unity-greeter background Ubuntu 12.04:

Following the guide at: How do I change the wallpaper in LightDM? I attempted to modify the background for the unity greeter. However, whenever I attempt to turn off dynamic switching: ...
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2answers
245 views

error to install lightdm because of plymouth

When I use this command sudo apt-get update , the output is as follows: Hit http://security.ubuntu.com raring-security Release.gpg Hit http://us.archive.ubuntu.com raring Release.gpg Hit ...
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51 views

Ubuntu screen freezes on Startup but can here login sound?

so I just installed Ubuntu on my Laptop and the installation went reletively okay. But when I bought Ubuntu from Grub I get the usual Ubuntu startup splash screen and it then just stays on that ...
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3answers
577 views

Ubuntu is in command mode how to turn on the GUI mode again?

I have HP Probook 4540s with Radeon graphic card, I downloaded drivers from This site and installed those after reboot I couldnt see my launcher and toolbar but yes i could use few shortkeys, I looked ...
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0answers
1k views

What is the “Light Display Manager” user account? [closed]

I installed Ubuntu 13.10 and suddenly I see a new user account to log in to (besides mine), called "Light display manager". Could someone explain why this account appears?
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138 views

After logging into Guest Account, my user's desktop customizations are gone

This is a weird one. Out of curiosity I had clicked on the Guest Session option at login, to see what it was like. Now, when I log into my original user, all of my desktop customizations are gone and ...
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1answer
1k views

low-graphics mode error in 13.04 with no graphics card [duplicate]

When I try to boot my computer, I get this error: "The system is running in low-graphics mode Your screen, graphics cards, and input device settings could not be detected correctly. You will need to ...
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25 views

LightDM login problem [duplicate]

Suddenly I am not able to login as usual, I just get kicked back to the login screen all the time. I haven't made any configuration changes, but there were some automatic updates installed before this ...
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0answers
45 views

xorg, jetty, and lightdm all crash my system when run

Whenever I start xorg my computer crashes. I am brought out to a black screen much like the one that it shows when I shut down my computer. After displaying this screen for awhile it kicks me out to ...
0
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1answer
182 views

Screen glitches or freezes after screen lock with Intel Video Driver

I'm running 13.04, and have an Intel HD 5200 display, using the Intel drivers. When the screen times-out and locks, most of the time one of two things happens: Either the current windows are still ...
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0answers
2k views

Invisible mouse

When I boot Ubuntu I can see the mouse cursor at the login screen but once I put my password is see this error could not acquire name on session bus I tried to Google the error but all I find is stuff ...
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0answers
31 views

Another way to fix “The system is running in low-graphics mode” error? [duplicate]

I began having the infamous "system running in low graphics mode" error after my daughter turned off the power so she could boot into Windows. Looking at the lightdm log in in /var/log/lightdm/ ...
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0answers
48 views

Adding Virtual Machine to lightdm

Is there a way for a virtual machine to start directly from lightdm? I have installed android in virtualbox which I want to add in lightdm for direct access. I am enjoying my Chromium OS from lightdm, ...
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1answer
589 views

Ubuntu Remote Login help

I'm trying to register a machine in the "Universal Client Configuration Service" so I can login remotely (via the login page for lightdm), however I'm not sure what to use in the "Server URL" field. ...
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0answers
41 views

Ubuntu doesn't open in graphic mode

My Ubuntu 12.04 LTS was working fine in Gnome mode, but I tried to login in user-defined mode. It worked fine, but now, when I try to login in Ubuntu mode or any other mode(Gnome, gnome-classic, ...
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0answers
28 views

Any Mechanical Drive Tweaks?

Noticed a couple of SSD-specific tweaks like putting log files to tmpfs, discard and noatime, etc. Was curious if such tweaks would also work on mechanical drives or be advisable? I noticed a little ...
0
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1answer
428 views

no GUI after normal update

After I finished working, I made the usual update that ubuntu every now and then ask to do. Please notice is update, I'm not upgrading the distro. After it finished, it asked for a reboot which I did. ...
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1answer
73 views

how to save while editing in /lightdm.conf

Hi I tried disabling guest account by editing lightdm and a bug sends me to it showing low graphics. I went I to termin and undid the change I made in /lightdm.conf but don't know how to save tbe ...
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0answers
105 views

How to prevent users from shutting down or rebooting from Unity and Lightdm in Ubuntu 13.10?

I'm trying to remove Shutdown/Reboot/Sleep (just want to leave the possibility to log-out) from the unity and lightdm menu on Ubuntu 13.10 but to no avail. I've already tried to apply polkit-1 ...
2
votes
1answer
1k views

Login loop with gdm and lightdm, startx works

I am running 12.10. Attempting to login via gdm lands me back at the login page. The behaviour is the same for when I switched to lightdm. Logging in with guest is fine, and logging in with a test ...