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

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1answer
975 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 ...
3
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2answers
299 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 ...
0
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1answer
121 views

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 ...
2
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3answers
887 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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0answers
828 views

Cannot login to Ubuntu 14.04 returns to the login screen

I updated to 14.04 from 12.04.03. I was using cinammon at that time. When I upgraded to 14.04 ,I got a serious problem. I was unable to login, as whenever I hit enter after entering password, it is ...
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0answers
151 views

lightdm crashes for domain users in ubuntu 14.04

Can someone please help. I am using ubunto 14.04. I have installed power broker (likewise open). It allows login for domain users from shell prompt. But when I try to login from login page. It throws ...
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0answers
39 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, ...
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0answers
1k views

Ubuntu 14.04 stalling with black screen w/ white cursor [closed]

The system will get to the Plymouth 'ubuntu' screen, load load, all dots filled, switches over to LightDM, but wait! No LightDM. :I Just a blank screen with that white cursor. Can't switch out to ...
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2answers
3k 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 ...
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0answers
43 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 ...
2
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0answers
88 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 ...
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0answers
2k 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 ...
3
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1answer
439 views

/usr/bin/X eating all the CPU [closed]

I have Ubuntu 12.10 system and it works slow. For checking I ran Htop command and found out that /usr/bin/X -nocursor :0 -core -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -n eating all the ...
0
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1answer
133 views

I've broken lightdm

I've installed xubuntu-desktop metapackapge on my system and afted this action unity-greeter has gone away. Ive purged lightdm twisely, then installed lightdm and unity-greeter. But still no result. ...
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0answers
50 views

Ubuntu 12.04 boot problem (headless)

So I set up an ubuntu box I have to run headless some time ago - using it as a media server for plex and other things. I'm able to use X to remote desktop into the machine without a problem. ...
2
votes
2answers
3k 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 ...
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0answers
32 views

Error after adding entry to ligthdm.conf

After giving entry greeter-show-manual-login=true in lightdm.conf file it gives an error after reboot that system running in low graphics Again if I remove the above entry the system boots normally ...
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0answers
27 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 ...
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0answers
1k 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: ...
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2answers
76 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 ...
0
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1answer
109 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 mymail@mymail.com However, when I put the above command in /etc/lightdm/lightdm.conf (I want ...
2
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1answer
359 views

Only a purple background displayed during the login screen. No wallpaper

I get only a purple screen for the background during login. Not even the default warty background. Its been like that since I installed Ubuntu. Ever since I came to know about the background of the ...
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1answer
237 views

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 ...
2
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1answer
50 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 ...
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0answers
158 views

Problem When Switching to kdm Ubuntu 14.04

Successfully installed ubuntu 14.04 lts on my lenovo yoga 2 pro, was pretty happy with it, i wanted to check out KDE, (i'm a noob and this is my first time ever trying to install a display manager) ...
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0answers
122 views

Lightdm Remote Login disappeared (Ubuntu 14.04)

after some update, in the login screen, the option for the remote login disappeared. What should I do to restore the option?
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2answers
194 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 ...
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0answers
97 views

What does “unknown code ovk 48” mean?

When I log in after update from 13.10 to 14.04, lightdm and gdm display unknown code ovk 48, I can log in without problems (lightdm requires that I press return after the message is displayed). ...
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1answer
2k 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 ...
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0answers
219 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 ...
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1answer
593 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 ...
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0answers
60 views

Security problem - password not required after tying to active directory server

We have been using our AD server to authenticate Ubuntu users for years. We have a handy perl script that places all the correct config files and does all the work for us. However, I'm having a ...
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0answers
146 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 ...
2
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2answers
2k views

Black screen on login maybe lightdm problem

Hi 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 to ubuntu. After i select the os ...
1
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1answer
146 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 ...
3
votes
1answer
264 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 ...
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0answers
32 views

restart lightdm - Are my applications gone?

So I have machine with an ATI graphics card which means restart lightdm is my second most used command right after ll. My question is, does restart lightdm blow away all the applications that were ...
2
votes
1answer
474 views

“exec: gnome-session: not found” when login using ligthdm

On login the password is accepted but it returns back to the login screen. Tried multiple times even after reboot ... same behavior. I had left my laptop (Lenovo Ideapad z510) in suspend mode (lid ...
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0answers
382 views

Multiple monitor issue with Gnome 3.10 running Ubuntu 14.04 LTS

I did a fresh install of Ubuntu 14.04 and installed Gnome Shell. When I enter display setting everything seems to work fine, that is until the next log off or reboot. For some reason the settings ...
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0answers
349 views

Lock screen not working

When trying to do something, I used the command "Service lightdm disable" or something like that. From the moment I did that, my lockscreen is not working anymore. How do I make it working again? ...
1
vote
1answer
241 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 ...
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0answers
902 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 ...
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0answers
51 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 ...
3
votes
1answer
397 views

Ubuntu 14.04, Nvidia Driver 304.117 for 7600GT

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 ...
0
votes
1answer
45 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 ...
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2answers
429 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 ...
1
vote
1answer
704 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 ...
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0answers
19 views

Add monitor settings in lightdm

Where do I have to place missing monitor preferences in lightdm, to load them at startup?
2
votes
2answers
6k 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 ...
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0answers
93 views

How to increase or decrease brightness in the login screen when running within Virtualbox?

I can't able to increase or decrease screen brightness on the login screen. Is that possible to change brightness on login screen?