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

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6
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1answer
1k views

Lightdm-too many desktop envirements

Today I tried to play with LXDE. After installing I go to login screen and try to select LXDE from list of avaible DE, but I can't select OK after that. . I know this is bug, but maybe somebody can ...
3
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2answers
6k views

“/etc/X11/X not executable” error when startx

What happened I wanted to install KDE and Gnome along with Unity. I don't know when I installed gnome-shell on my Ubuntu 12.10, but I installed KDE minimal desktop just now using sudo apt-get ...
1
vote
1answer
874 views

Ubuntu 12.04 is stuck in lightdm login (Unity Greeter)

The login and Unity Greeter is working. However, if I try to log-in - in a matter of seconds, it would return to the login screen. This happened when I tried to install a package and I restarted my ...
2
votes
1answer
1k views

Problem with LightDM & KDM

I'm a Kubuntu 12.10 x86_64 user. I recently found an exquisite KDM theme on (name of KDE artwork site). However, as the default display manager in Kubuntu is LightDM, I installed KDM with: sudo ...
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0answers
42 views

Jumping Login Box after Lighdm Multiple Monitor workaround

So I used this workaround to sort my resolution at the login screen when using multiple monitors with Lightdm. #!/bin/bash XCOM0=`xrandr -q | grep 'VGA1 connected'` XCOM1=`xrandr --output LVDS1 ...
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0answers
162 views

LightDM. Run commands before xmonad is started

I have XMonad installed from package manager and Ubuntu 12.10 with LightDM. How can I interpose the loading process to run my own script before xmonad is started? For example, I would like to setup ...
4
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2answers
4k views

Need restart lightdm at every startup - console login screen

Everytime I boot up my ubuntu 12.10, I get a black console screen. I need to login in tty, and restart lightdm : sudo service lightdm restart Then the GUI lightdm login screen appears as expected. ...
2
votes
1answer
150 views

lightdm execute script as user

At our computer department we need to run a script with user rights wenn the user logs in. Adding the script to .config/autostart is not an option since the script must not be disabled by the user. ...
1
vote
1answer
141 views

How to use pam_blue with lightdm, and unity-greeter?

I want lightdm to skip asking for my password if my phone is nearby. How is that possible with lightdm, and unity-greeter? Also I'm interested in knowing whether its secure, because it doesn't seem ...
0
votes
1answer
320 views

Broken NVidia X driver

Today I installed the daily updates and then a funny thing happened... I was playing Morrowind on Wine, and in the game I tried to navigate to the video settings menu to adjust the brightness. I had ...
3
votes
2answers
1k views

Xubuntu LightDM shows blank screen half the time [closed]

System info: (will be amended if any more info is asked for) My laptop runs Xubuntu 12.10. As it has a Solid State Drive, /tmp, /var/tmp, /var/log and /var/log/apt are set to tmpfs in the /etc/fstab ...
2
votes
2answers
394 views

How do I remove the unity 2D option in lightdm (login sceen) in ubuntu 12.04?

Because I wish to view my full username at login, I want to remove the "Unity 2D" option at the login screen. Currently the last part of the username (after the 20th digit) is hidden behind the ...
4
votes
1answer
626 views

Ubuntu 12.04 takes long time to show desktop

I am creating an application by customizing Ubuntu 12.04. And i'm using remastersys to create its backup to be distributed, the customizations are, My Application (Java) installed Postgresql ubuntu ...
0
votes
1answer
137 views

Login takes very long, annoying repaints once a minute when logged in: How to troubleshoot?

I am suffering from a strange problem with my Gnome Shell in Ubuntu 12.10. The login takes very long (> 30 sec), with a blank screen. In Google Chrome and Thunderbird (and perhaps in other ...
1
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0answers
55 views

how do i check available displays

When you know what display you want apps to start by default you would do something like: export DISPLAY=localhost:0.0 But suppose miss daisy, which is a frisky windows user that is giving linux a ...
55
votes
15answers
79k views

Ubuntu gets stuck in a Login Loop

My problem: As you can guess my Ubuntu is stuck in a login loop when trying to enter my desktop. Means the screen gets black and soon after that the login screen comes back. I'm a Ubuntu Newbie so if ...
1
vote
1answer
319 views

Can't login after forced shutdown

I am on ubuntu 12.04 and forced a shutdown (hardware switch). Now I can't login anymore. In particular, after entering my password I get sent back to the login screen. The error message is to fast for ...
6
votes
2answers
1k views

Switching desktop environment from Unity?

Basicall I have installed a few desktop environments. And if you are familiar with Unity, you know that the way switching works, is you get this sort of drop-down with all the environments installed, ...
3
votes
0answers
411 views

Lightdm not working at all since bumblebee install!

I'm relatively new to Ubuntu, so please excuse me if my question is stupid... So a few weeks ago, I bought a Gigabyte U2442N with Optimus Graphics (a 640M and a HD4000). I installed the stable ...
2
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0answers
201 views

lightdm - enable 3 and then 4 monitors

I've just completed a Ubuntu 12.10 server build on a HP XW8400 desktop with 2 x GeForce dual head DVI gphx cards. On the build bench I had 1 monitor connected & worked perfectly. 1920x1200 ...
2
votes
1answer
191 views

hibernate after timeout in lightdm

Is it possible to set up lightdm to hibernate after, for example, 5 minutes without human activity? Only in LightDM without this behaviour after login? I whant to be able just logout to lightdm by ...
0
votes
1answer
409 views

custom session in lightdm “chrome os”

am do this sudo gedit /usr/share/xsessions/chromeos.desktop and i file: [Desktop Entry] Encoding=UTF-8 Name=Chrome OS Comment= Exec=google-chrome --standalone Type=Application in this way am ...
4
votes
1answer
727 views

Unable to sign in. How to debug?

I had to reboot system with reset button. After reboot I can't sign in. When I enter my password It seems like X-server just restarts. I can sign-in as guest and also I can sign-in in text TTY. Here ...
0
votes
1answer
199 views

What is this 'X' command (with paramters) that uses 24% cpu? [duplicate]

Possible Duplicate: What is process “/usr/bin/X :0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch -background none”? This is using about 24% of my CPU's resources. /usr/bin/X ...
1
vote
1answer
2k views

How do I get back the Unity login screen after installing gnome-core?

I installed gnome-core and now I have an ugly login screen. I want to reset or delete gnome-core and re-install the Unity login screen, or just switch back to LightDM. Is there any way to do it easily ...
2
votes
1answer
154 views

Launch a program when X starts

I want to launch a program when X (not unity/gnome/etc) starts. In particular, I want to launch xset r 105 when lightdm starts. Is there a way to do it? I tried writing this into ~/.xsessionrc: ...
2
votes
2answers
2k views

How to edit lightdm to show “other user”?

I am an IT student aide at a college and we have a very small test computer that we started messing around on with 12.04 and used likewise to join it into the Windows network that we have. However, ...
1
vote
2answers
186 views

Cannot log into admin account

I saved a command that would hide the accounts other than the admin into the lightdm file and it chose to keep an "other" account for which I don't have the password. I cannot open the terminal from ...
1
vote
0answers
224 views

How do I speed up initial login?

The initial login on my Ubuntu 12.04 machine can take anywhere from 45 seconds to two minutes. If I log out, then log back in again, the login time takes between 4 and 7 seconds. How can I find out ...
4
votes
1answer
5k views

Lightdm: Select Window Manager (disappeared?)

Cant select with what window manager want to start X. I think its for unity-greeter. The icon that appears next to your username and let you start X with unity-2d, gnome, unity, kde, etc have gone ...
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0answers
58 views

(Easy Question) Start X and Unity from Console [duplicate]

Possible Duplicate: How can I set my Ubuntu 12.04 LTS to boot to console without GUI? A lot of questions without response. This thread is like this two: Start X and Unity from the console ...
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2answers
2k views

How to change font size of the login screen?

I had installed Ubuntu 12.04 on my netbook with maximum resolution of 1024x600, I upgraded to ubuntu 12.10. occasionally I use other GUI because it is more comfortable to me for certain tasks. since I ...
3
votes
2answers
2k views

How to make users with UID under 1000 appear in LightDM?

I've been trying to set this up, but I can't find a solution. It's neccessary, because the machine Ubuntu is on is a Macbook and needs to have access to the files of the Mac user. Is there any way to ...
2
votes
0answers
562 views

Is there a way to use LightDM and Unity but get a lock screen like GDM in 12.10?

I like the GDM locked screen theme a lot! But even if i set GDM as the Display Manager but log in to Unity session,the lock screen remains that oh LightDM... I want to use LightDM as my login Display ...
1
vote
1answer
1k views

How can I login to lightdm with password for fingerprint-enabled user after 12.10 upgrade?

Sorry for the long question. I have a laptop with ubuntu quantal 12.10, a fingerprint scanner, and a few active user accounts. When the machine boots up to lightdm, I get a prompt toenter my ...
7
votes
8answers
13k views

Desktop login fails, terminal works

I have a freshly setup 12.04 LTS pc system (120 GB SSD, 1 TB HDD, 16 GiB RAM); since a few days, I can't login to the graphical desktop anymore: there is very short flashing shell window which ...
2
votes
2answers
822 views

GUI is not displayed anymore

I am running 12.04 LTS on a VM. I encountered a problem with the screen being black and the familiar orange background showing for a fraction of a second when clicking or resizing the screen. I had to ...
5
votes
0answers
345 views

When will the Unity Greeter begin to look like the propositions from the Design Team? [closed]

The Canonical Design Team gave a rather beautiful login screen mockup for the unity greeter. These designs, in my opinion far exceed the current UI that we have for Quantal (which I think is worse, ...
3
votes
0answers
380 views

How to get 12.04's login screen (lightdm) to display the shutdown menu like 10.04 when the computer's physical power button is pressed?

In Ubuntu 10.04 while at the login screen (gdm), when the computer's physical power button was pressed a screen popped up that offered options on shutting down the system (shutdown, restart, cancel, ...
2
votes
1answer
749 views

Boot computer to text mode using kernel parameters

Referring to this question: How to remove the graphical user interface? The answer of modifying /etc/default/grub to have GRUB_CMDLINE_LINUX_DEFAULT="text" would be great, but unfortunately I don't ...
1
vote
1answer
223 views

Unable to log in to my account

This is weird,I was reading some blog and I found that I can manually start GUI by issuing this command sudo startx,so I did that.Now I'm unable to login to my user account.
8
votes
5answers
1k views

Weird XDG User Dir resetting bug

I have a weird problem with 12.04 LTS. Regardless of what I do to the ~/.config/user-dirs.dirs file, whenever I login again the next time, that file gets all set to $HOME only. Something is happening ...
0
votes
1answer
461 views

Upgrade to 12.10 failed. Now it wont start, hangs

May have started 2 instances of upgrade (to Quivering Quagga - I call it that because my machine is now extinct), stops and hangs halfway through startup. Always at same point. Can I work out the ...
3
votes
1answer
366 views

“dm-tool lock” doesn't lock my session

When I use dm-tool to lock the screen for userA, I can log in as userB and then use dm-tool to switch back to userA's session without having to enter a password. Is that the expected behavior? If ...
2
votes
2answers
405 views

How should I determine if a user is logged in graphically while lightdm is running?

I want to know if someone is logged into a local X-session. In the past I looked at the output of ck-list-sessions. The output looked something like this: Session12: unix-user = '[redacted]' ...
2
votes
0answers
298 views

lxdm won't login to Ubuntu 2d or Gnome classic

I installed Ubuntu 11.10 on an old Dell Centrino/512mb machine that was running too slow with Windows to be useful. I am completely new to Linux and muddling my way through as well as I can. The ...
4
votes
1answer
538 views

How do I disable network connection at prelogin?

--- This question is related to Ubuntu 12.10, since previous versions did not connect to network before login --- I had a bad boot today: the Ubuntu screen was blocked at startup time, after a green ...
2
votes
4answers
919 views

LightDM Backgroud is a simple purple radiant

It seems after I tried to change the login screen background with Ubuntu Tweak, the greeter's background stays a simple purple background with just the spots.. I tried using dconf-editor, rechanging ...
1
vote
1answer
2k views

Ubuntu 12.04 monitor goes to sleep and won't wake up

We have about 80 systems running ubuntu 12.04 64bit desktop edition. We are facing a strange problem. Everything works fine except that after the monitor goes to sleep, if we don't wake it for long ...
1
vote
1answer
540 views

Window manager not working

When upgrading Kubuntu from 12.04 to 12.10 I agreed to stop the kdm daemon and now I can't get any window manager to initialize. I do however still have my Burg boot screen. So now how do I finish my ...