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

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How to install a graphic display enviroment in Ubuntu server?

I installed Ubuntu Server 14.x for use as a server. It comes with a plain vanilla terminal UI. How can I install a graphical desktop on it? Thanks! Caesar.
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0answers
19 views

lightdm login gives blank screen then returns to lightdm

After typing in my password in lightdm, I get a blank screen and then I'm returned to lightdm. I'm unable to find any obvious problems in /var/log/lightdm or /var/log/Xorg.0.log (though I'm happy to ...
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0answers
37 views

Black screen and login loop after updates Ubuntu 14.04 LTS

I have been using 14.04 LTS for a year now, perfection! Then this week I had new updates, for which one of them had an error. I cannot recall which one had the error. After reboot the login screen ...
104
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12answers
89k views

How do I disable the guest session?

How do I disable the guest session in Ubuntu 11.10 or higher? I don't want people to be able to use my computer without using a password to log in!
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0answers
11 views

How do i stop the greeter from changing on lock or suspend

I have installed xfce on 14.04 unity distribution and every time I lock the session or suspend, my greeter changes from the unity default one to a xubuntu skinned one, I have not figured out why. I ...
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0answers
167 views

Ubuntu 14.04 login loop - Guest sessions does not work either

I have been using Ubuntu 14.04 soon after it is released. Today I messed something up with the Chinese input ibus, and I don't know if this is the reason at all, but when I reboot using sudo shutdown ...
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0answers
43 views

Is it me or do the Nvidia proprietary drivers just SUCK [on hold]

Anytime I switch from the Intel chip to the Nvidia chip in my Thinkpad, the problems just roll in. Sadly, it's the only way to output to my 2nd monitor when I'm docked, instead of blurry old VGA. ...
33
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5answers
25k views

How do I hide a particular user from the LightDM login screen?

How do I hide a particular user from the login screen on a default install of 11.10 and higher? (ie. using LightDM)?
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0answers
11 views

Looks like my window manager is not starting after upgrade [duplicate]

I upgraded to 14.10 just the other day, and the upgrade appeared to work fine. I get the login screen just fine, but when I log in, all I get is the wallpaper and the "Ubuntu 14.10" in the lower left ...
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0answers
15 views

switch user leads to black screen

I'm on the latest 14.04 with nvidia-331 drivers installed. Everything runs smoothly just when I try to switch user I get a black screen. Suspend and logout works with no problems. Somehow I managed ...
10
votes
1answer
9k views

Why don't my lightdm.conf edits affect my desktop screen resolution?

I wanted to change my desktop screen resolution to 1366x768. But my VESA drivers(AMD REDWOOD) did not detect that resolution. So I created a shell script as follows:- xrandr --newmode ...
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0answers
28 views

Ubuntu 14.10 randomly freezes - have to restart lightdm through TTY

I have Ubuntu 14.10 64 bit installed on my HP Evny DV6-7213nr laptop on the old Recovery Partition, no WUBI. I have the latest ATI Catalyst Omega 14.12 drivers installed and everything works great, ...
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0answers
11 views

Can I add a music player to the login screen? [on hold]

I was wondering if I can add any music player on login screen. Think about it like on your smartphone. Is there a way?
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1answer
21 views

After switching from gdm to lightdm my screen turns off when I come to the login

I tried to change my Display Manager from gdm to lightdm. After a system restart everything was normal until I got to the login place. Instead of seeing the login screen I only heard the sound of the ...
0
votes
1answer
32 views

How to start a process and attach it to the terminal corresponding to the local graphical shell?

I'm running Lubuntu 13.04 using lightdm as my login environment. If I'm logged in to the graphical session and start my process, everything is groovy. But if I start the process remotely (ssh ...
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2answers
82 views

ubuntu 14.04 login loop problem

My Ubuntu 14.04 is stuck, when trying to login my desktop. Means the screen gets black and soon after that the login screen comes back. I followed all steps in Ubuntu gets stuck in a Login Loop Even ...
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0answers
56 views

Ubuntu 14.10 - Wrong greeter screen resolution

I'm currently running Ubuntu 14.10 set to a resolution of 1920 x 1080, but on start up of the system, the resolution is incorrectly set to 3840 x 2160 (with no scaling) at the greeter screen. On ...
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2answers
3k views

Upgrade to 13.04, user picture shows up on lightdm. Can I change it?

So, I recently upgraded my Xubuntu to 13.04, and afterwards I noticed that there is now a picture of me on the lightdm login screen. I have no idea where this picture came from, I don't remember it ...
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4answers
854 views

Login screen doesn't remember my choice of desktop enviroment

I have installed gnome shell, loged in to it, but on boot the computer logs in to a ubuntu session. I have automatic log in enabled. How can I fix this. How can I make ubuntu remember my choice of ...
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2answers
50 views

No Desktop appear after logged in using lightdm Ubuntu 14.04

Guest Logged in working fine...But When i do logging with my user account..logged in gets successful but after logged in ..nothing appears on desktop except wallpaper of ubuntu. Facing this problem ...
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0answers
17 views

What are the names of the icons that LightDM uses?

I'm currently trying (and failing) to make a system icon theme for the Ubuntu LightDM login screen. I really hate the default ubuntu-mono-dark icons, and would like to use my own set of icons. After ...
0
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0answers
29 views

How do I set-up LightDM and gnome-session-flashback to use XDMCP?

I'm trying to create a terminal session on another computer in my local area network. I have used XDMCP in the past, but it's pretty long ago ('06 & '07). I remember it being a breeze to set-up ...
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0answers
33 views

Complication over VNC, lightdm and startx

I managed to run x11vnc server on my Ubuntu 14.04. I can log into my Ubuntu from my Windows PC using UltraVNC Viewer. The Ubuntu machine is headless. I followed instructions below. ...
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0answers
39 views

Cannot login on 14.10 GUI

So I booted up my laptop like normal and got to my login screen (unity) and once I logged in I was brought to my desktop with icons missing, then thrown back to the login screen. I tried changing my ...
0
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1answer
32 views

Ubuntu fonts are corrupted on certain windows

I'm running ubuntu 14.10 on a lenovo yoga pro 3. Specifically I followed the instructions detailed here during the istallation process: Yoga 3 Linux HOWTO When I login to Ubuntu sometimes the fonts ...
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1answer
24 views

How to hide administrator account or root in Login screen?

I used Ubuntu 12.04 and I want to only user account appear on the Login screen without guest and administrator account. My administrator account cannot view to everybody when their Login. ...
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0answers
17 views

Double entries on lightdm screen

Actually there is 4 entries on my lightdm login screen . First is Ubuntu default fourth is cairo-dock session second and third are both Kodi(aka XBMC) . Obs: One of Kodi session inside the ...
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1answer
4k views

What is the relationship between Unity, Gnome, Gnome 3, Compiz, Metacity, and LightDM?

I am learning about Graphical User Interfaces in Ubuntu and constantly come across different terms, which cause a lot of confusion for me. I have tried reading easy-to-understand tutorials about the ...
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3answers
2k views

Ubuntu 14.04 Login screen password always incorrect

I have just installed Ubuntu 14.04 for the first time boot. I am a long time MS Windows user and don't like where Windows is headed so I decided to switch to Ubuntu and only use Windows for gaming. ...
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1answer
53 views

VMware tools crashing with root access in Ubuntu 14.04.2

I'm trying to enable graphical root login with commands on Ubuntu 14.04.2: sudo passwd root sudo sh -c 'echo "greeter-show-manual-login=true" >> /etc/lightdm/lightdm.conf' Portions of the ...
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0answers
7 views

How can I remove this discoloration from the lightdm-kde-greeter?

I am using Kubuntu 14.04.2 LTS. Recently (not sure since when but it certainly wasn't there at my earliest 14.04 install last year) my locker has started to display some discoloration in some parts. ...
2
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0answers
31 views

How does LightDM treat PAM?

I use XFCE as my desktop, and I wanna know how LightDM works with PAM. when I use normal kernel arguments, LightDM starts and then XFCE is started by LightDM. When I add "text" to kernel parameter, ...
4
votes
2answers
443 views

lightdm: cannot type password on login screen

I am running 12.04 LTS, fully updated. My system is configured to automatically log me in into my account. Auto-login works fine. However, sometimes I need to access the unity-greeter/lightdm login ...
0
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1answer
5k views

No desktop appears after loged in using XDMCP

I just installed a test machine with Ubuntu LTS 14.04 and I went to configure the XDMCP access and found that the file /etc/lightdm/lightdm.conf is not there anymore. In Google I found that now it is ...
1
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1answer
54 views

Handling laptops with docking stations on XFCE

Anyone here running a setup in which they use a laptop + docking station setup for XFCE? At work, I plug/unplug from multi-monitor setups all the time and on unity I didnt have an issue (Radeon ...
141
votes
37answers
411k views

How to fix “The system is running in low-graphics mode” error?

Note: This is an attempt to create a canonical question that covers all instances of "low-graphics mode" error that occurs to a user, including but not limited to installation of wrong ...
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1answer
63 views

How to customize login screen for Ubuntu 14.04.2 LTS

is there a way to customize the login screen for Ubuntu 14.04.2 LTS. I want to move my login area of Ubuntu 14.04.2 LTS from left side to the middle. After searching in the web i came across this ...
8
votes
5answers
69k views

How do I kill the x-server?

Every time I try to kill the x-server, sudo service lightdm stop so that I can install the latest Nvidia drivers, I get an error message. stop: Unknown instance: What am I doing wrong?
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0answers
73 views

How to run Remote Desktop at startup before logging in?

I've tried Google Remote Desktop first, and added this line to Startup Applications Preference /etc/init.d/chrome-remote-desktop start , but unfortunately this won't be executed before logging in ...
1
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1answer
635 views

12.04 After HWE upgrade and running Ubuntu Tweak to clean cruft, can't start lightdm

I did the HWE upgrade and that worked fine. System started fine. But I ran Ubuntu Tweak and it reported massive amounts of cruft. So I did the Janitor and uh-oh...system boots to command line ...
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0answers
138 views

/etc/X11/Xsession & LightDM

I'm running Lubuntu 14.10. It seems that LighDM invokes /etc/X11/Xsession only if directed to so by the user. In fact there is no shadow of it in lightdm-session wrapper. startx command line ...
43
votes
1answer
12k views

What happens under the covers to log me in and start up Unity or another Graphical User Interface?

When there's trouble, it might be good to understand what happens under the covers to sign a user into a GUI session and get a Unity (or other window manager) to bring up a desktop.
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1answer
30 views

log in bounce back due to missing system file

I have stupidly uninstalled some system component. And after restart I can not login, every time I typed in the corrected username and password, the login page just bounce back. I am on ubuntu 14.04 ...
0
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1answer
113 views

Lightdm is broken when used ubuntu tweak to change the default background!

I have ubuntu 14.04 and I used the "change login screen background" and now, when I change my wallpaper, The wallpaper on the login screen dose not change and if I change it via ubuntu tweak, The ...
0
votes
0answers
132 views

(Solved) Login Loop - unable to run unity - not Xauthority ownership but may be related to display?

All, I was trying to get VNC working, making lots of changes that I don't recall now when I discovered after a restart that I could not login to Ubuntu 14.04. I believe I authenticate ok, but get ...
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votes
2answers
6k 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
137 views

Is sudo killall -u lightdm safe?

I realized that my server has many processes runned by lightdm: Can i killall processes from lightdm? Is sudo killall -u lightdm safe?
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5answers
4k views

rotated monitor. login screen needs rotation

I rotated my screen, an once I login, it works fine. but, the greeter (login) screen hasn't got the message that things are rotated 90 degrees. How can i change the rotation of the login screen? ...
0
votes
1answer
64 views

google chrome tearing with integrated intel graphics, but working with optirun

Whenever I run google-chrome, I get a lot of tearing issues. These are easy to notice, for example, when scrolling on facebook. The top bar, the one with the logo and the notifications button, tears ...
0
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1answer
83 views

solved :lightdm using too much of CPU resources

I am using ubuntu 12.04. The lightdm is taking too much amount CPU constantly. I have tried restarting the system many times, but no use. Please help. lightdm version : 1.2.3 Thanks Saravanan