Questions tagged [lightdm]

LightDM (Lightweight Display Manager) is a Display Manager for the X.org X server. It is the default X display manager of Ubuntu. LightDM starts an X session and presents the user with a graphical login screen, so the user does not have to issue commands such as `startx` to start the X server

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Impossible to start Ubuntu after installing lxde

i just tried installing lxde on my Ubuntu 14.04. I wanted to try working with two different screen at the same time. So to do that typed CTRL+ALT+F2 to go in another terminal and then i typed the ...
user2635652's user avatar
9 votes
1 answer
9k views

How to make ubuntu 14.04 a kiosk [duplicate]

I have made a clean install of Ubuntu 14.04 LTS Desktop and now want's to convert it into a kiosk with a full screen webbrowser. This was previously done in 10.04 and worked perfect, but due to ...
Thomas's user avatar
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Unable to login into any account

How it happened My computer was becoming very unresponsive and I could not close any applications to free memory so I held the power button until the computer turned off. When I turned it on ...
miremire19's user avatar
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1 answer
1k views

KDE 4.13.2 update breaks login from LightDM on Kubuntu 14.04

One of the KDE updates that rolled out in the last couple of days broke my ability to log in to KDE from lightdm using the lightdm-kde-greeter. At the lightdm prompt, I enter my login credentials, the ...
rsking84's user avatar
  • 146
2 votes
1 answer
1k views

Lightdm issue after installing xmonad, Ubuntu 14.04

Yesterday I decided to install and try Xmonad on my laptop running a fairly fresh install of 14.04. After running an Xmonad session i decided to try the Gnome-xmonad (or something similar) option. All ...
user2837144's user avatar
0 votes
2 answers
833 views

Fluxbox Lightdm nautilus

I recently started using fluxbox, I'm using Lightdm as a desktop manager and was using gnome/unity before fluxbox. I'm facing a few troubles while trying to adapt to this new window manager, the ...
Frederico's user avatar
7 votes
3 answers
45k 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. ...
David Lawrence's user avatar
3 votes
0 answers
374 views

unity-greeter login background won't change according to the user that is highlighted

I use Ubuntu 12.04. Recently, I change to use another Accounts Service which could remove certain users from the graphic login screen of unity-greeter. I downloaded source code from a branch of ...
Hongce Zhang's user avatar
1 vote
1 answer
1k views

Stuck at Ubuntu login screen

When I try to log in to my account the screen turns black for a second then goes back to the login screen. Apparently this is a fairly common problem but nothing I've tried from past questions on this ...
user296554's user avatar
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1 answer
813 views

Is there a way to disable portrait/login picture display in the Xubuntu login?

I recently upgraded a machine from XUbuntu 12.10 and now the login screen has a blank silhouette that looks like the Facebook empty profile picture. How do I disable this and get back to just username ...
bright-star's user avatar
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Login Screen Stuck as Desktop Background After Sign On

The wallpaper of my desktop doesn't appear and instead only the wallpaper of my login screen appears in my desktop. Also though the launcher, panel everything appears(as shown in the screen shot) they ...
thebuluk's user avatar
1 vote
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Unity unable to login (can login with xubuntu) [duplicate]

Any and all help would be appreciated... Ok so. My laptop is Ubuntu 14.04, and the other day I restarted it and then was no longer able to login. So what happens? I attempt to login (lightdm) and ...
jshthornton's user avatar
8 votes
3 answers
13k views

Laptop using 14.04 won't get past login GUI

My laptop was working perfectly yesterday, and now today I can't log in. At first, I was only getting a black screen. However, after following instructions in some questions here on AskUbuntu, I ...
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Lightdm does not start automatically

When booting Lubuntu 14.04, a terminal screen is shown instead of the usual graphical log-in screen. Then, I have to type sudo lightdm and use Ctrl+Alt+F7 to switch to the graphical log-in screen. I ...
Rantanplan's user avatar
4 votes
2 answers
10k views

MATE not showing up after install

I just used Synaptic to install MATE Desktop Environment on my Ubuntu 14.04 computer. It installed successfully, but after rebooting, it's not showing up on the login screen. My only options are to ...
mc3mcintyre's user avatar
5 votes
3 answers
2k views

Opencl application does not recognize GPU till user physically ( and not remote) logs in to machine

I run some opencl applications on 2x AMD Radeon HD 7870 on a machine running Ubuntu 13.10. I power the machine on and lightdm has the login prompt. Since I cannot physically be present to login to ...
harijay's user avatar
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Kubuntu + kdm blank desktop

I recently did a sudo apt-get install kubuntu-desktop. Reboot loaded a kubuntu splash screen, then loaded the unity desktop. I read you needed kdm to handle the log in screen, so I did sudo apt-get ...
user2977486's user avatar
3 votes
4 answers
9k views

Ubuntu 14.04 - No Unity in user account, but in guest account

Yesterday I switched back from Linux Mint to Ubuntu 14.04 and after installation I faced the following problem: When I login with my user account Unity isn't loading. I can see no desktop elements - ...
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1 vote
0 answers
68 views

Booting briefly shows CLI login and then black

When I boot to Ubuntu on my dualboot system, it appears to boot normally, up to the point when I would normally expect to see the lightDM graphical login screen. However, I see a CLI login screen, ...
lepusfelix's user avatar
2 votes
2 answers
47k views

How to change the default Desktop environment (That appears in the greeter) in 14.04

Previously I navigated to /etc/lightdm/lightdm.conf and changed user-session=ubuntu. lightdm.conf doesn't exist in Ubuntu 14.04 at that location, so how do I change user-session=ubuntu to something ...
davidbuddy9's user avatar
1 vote
0 answers
297 views

Is it possible to login into lightdm interactive screen remotely?

I have this big Ubuntu desktop that dubs also as a home cinema PC. When I feel lazy, I'd love to be able to run the PC remotely and watch movies from my bed. I can turn it on via WoL. I can launch ...
Adam Ryczkowski's user avatar
15 votes
1 answer
719 views

Prevent light-locker from setting volume to 100%

I'm on 14.04 with XFCE. When I lock the screen it appears to mute the system volume (or perhaps just mute anything from the locked session?). When I log back in the volume is reset to 100%. This ...
user287700's user avatar
2 votes
1 answer
3k views

Unable to reinstall unity-2d on Ubuntu 14.04 desktop LTS?

It is wiered that I'm not able to reinstall unity-2d on my system. I removed it as it was not ready to go into the 2D mode. I have XRDP install for which I need Unity-2D. after removing the unity-2d ...
Hrish's user avatar
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No Unity greeter after installing Xubuntu desktop [duplicate]

I installed xubuntu-desktop metapackapge on my system and after this action unity-greeter no longer appears. I've purged lightdm twice, then reinstalled lightdm and unity-greeter. But still no result. ...
yanpas's user avatar
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3 votes
3 answers
6k views

GDM and Lightdm don't work after update; KDM is ok

After updating Ubuntu (apt-get update, apt-get upgrade and apt-get dist-upgrade) last Tuesday, GDM stopped working, and the startup hangs on the Ubuntu logo. Lightdm also don't work (same happens). If ...
Vinícius's user avatar
1 vote
0 answers
50 views

NVidia screen config

How do I restore the display config to the one I got during installation? I'm running Ubuntu 14.04 with dual nvidia gtx 570 connected to two screens. When I installed ubuntu at first I ran 13.10 ...
dutt's user avatar
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0 answers
3k views

LightDM Customisation KDE or Unity Greeter in Xubuntu 14.04

my favorite Distro is Xubuntu, only the GTK greeter let my eyes bleeding (i know, its lightweight and simple). So i check these hints: is-there-a-list-of-all-the-possible-configuration-options-for-...
samsy's user avatar
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1 vote
2 answers
172 views

Missing mouse after switching account

I have an old Acer Aspire 6920G with Ubuntu 14.04 and lightdm installed keeping the existing /home partition and two working users. When I switch from a user to the other I miss the mouse on the ...
Alienhunter3010's user avatar
0 votes
1 answer
3k views

email body empty when I use "echo" in mutt commandline mode with root account

I have use mutt to send mails. It works fine when I use my own user account: e.g. echo "foo bar" | mutt [email protected] However, when I put the above command in /etc/lightdm/lightdm.conf (I want ...
Starry's user avatar
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2 votes
1 answer
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How can I restore my Unity after removing KDE?

Eliah Kagan's answer to how to remove KDE here (How to remove all traces of KDE installed) is a great first step in removing KDE from a Ubunutu, but I still have remnants of KDE that were not removed ...
syserss's user avatar
  • 193
2 votes
1 answer
762 views

How to run scripts as user (not as root) in lightdm?

I want to run some scripts before login every time my PC is started. I add the scripts in as greeter-setup-script in lightdm.conf. However, all the scripts are running as root! I want to use normal ...
Starry's user avatar
  • 43
1 vote
2 answers
2k views

Can't login after killing X Server with encrypted home directory

I have ctrl-alt-backspace enabled to terminate Xorg in an xorg.conf.d file: Section "InputClass" Identifier "Keyboard Defaults" MatchIsKeyboard "yes" Option "...
psanford's user avatar
  • 436
0 votes
1 answer
4k views

Autologin Ubuntu 14.04 Desktop Session As Guest And Allow Web Browser

How can you autologin session as Guest? Bonus for if you explain how to limit the guest to only web browser functionality? (and save no changes) I see the thread here (How to enable guest account ...
spacecwoboy's user avatar
1 vote
0 answers
669 views

Enable numlock at login screen - with thin client?

I want to enable numlock at the login screen. numlockx is already installed. I've tried adding greeter-setup-script=/usr/bin/numlockx on to etc/lightdm/lightdm.conf, which by the way only works if it'...
Epo Nym's user avatar
  • 126
1 vote
1 answer
999 views

How do I get my Unity login screen back after installing Lubuntu Desktop on 14.04?

I have installed lubuntu-desktop and xfce4 on a Ubuntu 14.04 installation. After doing so, my login screen changed. I have tried resetting my LightDM and attempted to modify the lightdm file, where ...
user281459's user avatar
1 vote
0 answers
264 views

Force a user to use a specified session

I've looked everywhere and can't find how to do the following: What I have is Ubuntu 14.04 desktop 32bit configured with two accounts, one admin and one to run a web kiosk. I have set up a new ...
user280966's user avatar
2 votes
2 answers
9k views

After adding "greeter-show-manual-login=true" I can't log in

After I entered this command in terminal: sudo sh -c 'echo "greeter-show-manual-login=true" >> /etc/lightdm/lightdm.conf' and I reboot my PC I cannot login. After I select the os in GRUB it ...
Zorbacator's user avatar
1 vote
1 answer
237 views

upgrade to 14.04 added lightdm to server edition

The update from 13.10 to 14.04 using do-release-upgrade seems to have added lightdm to my computer. On top of that, lightdm wasn’t even set up properly, nor do I want it set up. I prefer not to use ...
user280014's user avatar
6 votes
5 answers
4k 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 ...
laramichaels's user avatar
3 votes
1 answer
4k views

"exec: gnome-session: not found" when logging in using lightdm

On login the password is accepted but I'm returned to the login screen. Tried multiple times even after reboot... same behavior. I left my laptop (Lenovo Ideapad z510) in suspend mode (lid down) last ...
kapilok's user avatar
  • 131
1 vote
1 answer
7k views

XAuthority Error [duplicate]

When I try to login to my ubuntu 12.04 it accepts my account info and password but then a black terminal page appears and disappears very fast and it goes back to login page. I killed lightdm and then ...
Sam's user avatar
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1 vote
0 answers
2k views

14.04 Trusty Tahr LIghtDM No way to switch session

I installed Trusty on my laptop. I like Gnome Shell more than Unity. So I installed Gnome Shell via Software Centre. I have LightDM 1.10.0 installed on my system. Unlike the previous version it ...
Shoaib Nawaz's user avatar
  • 2,249
1 vote
0 answers
66 views

Unity will not log on

Unity will only log onto the guest version on my computer, when I type in my password normally it momentarily flashes to a black screen then return to the login screen. When running unity through ...
user2592835's user avatar
3 votes
0 answers
660 views

Ubuntu 14.04, Nvidia Driver 304.117 for 7600GT [closed]

I have a clean new installation on an SSD Drive of Ubuntu 14.04 with NVidia Driver 304.117 running. After (very quick) boot I can hear that the login screen has started but no picture on my F-HD ...
makku71's user avatar
  • 31
1 vote
1 answer
230 views

Cannot go to black screen (Manual login, Ctrl+Alt+F2) and cannot stop light dm

I have Ubuntu 12.04 installed on my Connoiseur work station with Intel Xeon processor. It has Tesla C1060 graphics card. Recently, the system encountered a kernel error and a pop up window appeared ...
Observer's user avatar
3 votes
3 answers
4k views

ldap client causes boot to be very slow on 13.10, causes hang on 14.04

I have successfully configured ubuntu as an ldap client following the howtos found on this site. i do the following. 1) apt-get install libpam-ldap nscd 2) configure ldap-auth-config 3) change /etc/...
user2884260's user avatar
9 votes
1 answer
54k views

lightdm doesn't start

Today when I started Ubuntu, it didn't start lightdm, showing a black screen. I changed to console Ctrl-Alt-F1 and tried to start lightdm manually sudo start lightdm It threw me to the graphic ...
Chaosor's user avatar
  • 373
9 votes
2 answers
20k views

Unity greeter does not display custom wallpaper

I am using Ubuntu 14.04 LTS 64 bit . I know this question has popped up many times but I want to make it very clear that none of the posts helped me a bit. my Problem: I am unable to get my custom ...
sud_the_devil's user avatar
2 votes
0 answers
293 views

14.04_x64 / Nvidia GT 240 , HUGE font notificaton at greeter and in naulitus after log-in

I've been using 12.04 for a long time - excellent version indeed, I decided to try 14.04 today. Installing without any problems. My VGA is Nvidia GT240 (legacy one), Nouveau display driver is fine, ...
mrlamud's user avatar
  • 126
0 votes
1 answer
2k views

Can't switch between lightdm and gdm

I installed Ubuntu Studio 13.10 from a minimal CD, and then upgraded to 14.04. But since the cd install, I have been trying to change from gdm to lightdm. I have tried sudo dpkg-reconfigure gdm, sudo ...
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