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38

Both LightDM and GDM (GNOME Display Manager) are display managers. They both provide graphical login capabilities (the GUI with the list of the system's users) as well as remote logins using the XDMCP protocol. Ubuntu is supposed to officially replace GDM in favor of the lighter and more easily customizable LightDM You can have both of them installed (or ...


31

Replacing Desktop By An Application Define User Defined Session First we will have to define a User Defined Session that handles the special case when no desktop should be loaded. We will define this session by creating a custom.desktop file in /usr/share/xsessions/ with a content similar to this: [Desktop Entry] Name=Custom Comment=Custom Session to run ...


29

GDM was switched out for LightDM, so: sudo stop lightdm Or in your service parlance: sudo service lightdm stop For future reference, all these upstart services (that can be run with initctl's service command and shortcuts) are .conf files in /etc/init/


24

Edit the file /etc/gdm/gdm.schema find the section that currently looks like this: <schema> <key>greeter/Exclude</key> <signature>s</signature> <default>bin,root,daemon,adm,lp,sync,shutdown,halt,mail,news,uucp,operator,nobody,nobody4,noaccess,postgres,pvm,rpm,nfsnobody,pcap</default> </schema> ...


17

In Ubuntu 10.4 you should refer to Upstart http://upstart.ubuntu.com/ which handles starting of tasks and services during boot, stopping them during shutdown and supervising them while the system is running. Upstart handle start of gdm, so you should edit /etc/init/gdm.conf # sudo vi /etc/init/gdm.conf Default runlevel in ubuntu 10.4 is 2 so you must ...


13

Use this command in the terminal: sudo cp /usr/share/applications/gnome-appearance-properties.desktop /usr/share/gdm/autostart/LoginWindow Logout, and you will be prompted with the Appearance window. change the theme as you change it for the desktop, and login back, and type this command: sudo rm ...


12

The normal way : Go to System -> Administration -> Language Support On the Text Tab, choose your prefered language to display numbers, dates, ... The advanced way for your Desktop Applet : Press Alt+F2 Type: gconf-editor & Hit return Navigate to “Apps > Panel > Applets > Clock_Screen0 > Prefs” Double-click on the ‘Format’ value. Change it to ...


12

GDM You can't make the lock screen look like the login screen. However, you can use a theme for the lock screen. There are quite a few available at gnome-look.org. Here's an example.


11

Hacky but you can modify the user's id so they don't show in the list: sudo usermod -u 999 <username> This works because users with id under 1000 are considered to be "system" users (i.e. not humans). The only other way I know is to hide the list completely: sudo -u gdm gconftool-2 --type bool --set /apps/gdm/simple-greeter/disable_user_list ...


11

You seem to have configured gdm correctly, but you did not actually stop lightdm. Logging out doesn't stop it. After doing sudo dpkg-reconfigure gdm, you need to stop lightdm sudo service lightdm stop and start gdm sudo service gdm start Hope this helps.


10

Switching from LightDM to the "older" GDM is very easy, and need not even involve opening a terminal. Note: If you need/want to do this from a terminal (e.g. recovery console), please scroll below the screenshots for a how-to. Also, the "new" GDM is not covered here because it is not officially available for 12.04 and the unofficial packages do ...


10

Install x11vnc on the remote We assume a working ssh setup has already been done. user@remote: sudo apt-get install x11vnc Remote login with GDM We assume that a successful vnc setup has already been done. user@remote:~$ sudo x11vnc <options> x11vnc will use our predefinded VNC settings and passwords. For further options see the manpage and ...


9

This depends on what you want to do with the login screen. You can configure some basic options in the Login Screen Settings app (System/Administration/Login Screen) - whether a user should be automatically logged in, the default session etc. However to change the login screen more graphically Ubuntu Tweak can be used to change the background, logo etc.


9

Elaborating on Gilles's comment to the accepted answer, here's what I believe is the current "best practices" (Gnome-safe) way to do this. This change will also be reflected in the Gnome "Indicator Applet Session". This method is that one suggested in the docs at the GDM website, and though both the site and Gilles show the addition of "nobody" to the ...


9

Do: sudo dpkg-divert --rename --add /etc/init/gdm.conf Which prints: Adding `local diversion of /etc/init/gdm.conf to /etc/init/gdm.conf.distrib' This will allow you to disable GDM while preventing package upgrades from putting the file back in place and allowing the GDM package to upgrade the configuration file. In the case of 11.x and above lightdm ...


9

Recent versions of Ubuntu are using upstart instead of SysV init. Rename /etc/init/gdm.conf to /etc/init/gdm.disabled. For Kubuntu, rename /etc/init/kdm.conf to /etc/init/kdm.disabled.


9

this may fix the problem. If you are stuck with no mouse movement on your laptop (touchpad) then press the key combinations Alt+F2 and type in gksudo modprobe -r psmouse Type in the password, press enter, and then press Alt+F2 again for entering the following gksudo modprobe psmouse Thats it. Your mouse pointer will start working again. If you like ...


8

It depends upon what you understand by "pure gnome-3". Obviously each distro pulls in components its developers consider makes up a great combined release. Fedora and Ubuntu have different views. The Gnome-Shell developers work on a core set of applications that each distro either includes by default or is available in their respective repositories. ...


8

In recent versions of Ubuntu, gdm has been replaced with lightdm - this is why you don't have a gdm.conf. To set lightdm to be started manually, create an 'override' file for its init configuration: echo 'manual' | sudo dd of=/etc/init/lightdm.override (this just creates a file, called /etc/init/lightdm.override, containing a single line that says manual) ...


8

If you like the GDM themeability - MDM is great! MDM is currently part of the Linux Mint repository - after contacting the Andrew of WebUpd8.org he has also packaged this in his PPA. Great going Andrew! The following has been tested on 12.04 Ubuntu in a VM. It also has been tested independently on 12.04 Xubuntu. Until then (and assuming you understand ...


8

Tista and three other dev's have done just this (see link below). Tista has created a testing PPA to install GDM 3.2 - this is the version of the login manager which you can theme via CSS. Warning - this is a testing PPA At the time of writing this, there are only packages for Precise (12.04) I originally tested this on a 11.10 virtual machine when a ...


8

Wow thats a new one on me. I'm not really sure that the GUI actually gets you anything that you can't get with a text mode login (contrary to popular belief, you don't need to learn vi. Nano is perfectly easy to use). So, I'd suggest removing the GUI from a server as a simple fix. However this presents an interesting problem none-the-less. 1) You should ...


8

They handle pretty much everything (that isn't displaying graphics on hardware) for X. Logins, greeters, pass X the configuration for external connections, session choice. You don't need a heavy DM but I would argue that GDM isn't that heavy. LightDM certainly isn't. But if you're really trying to hypermile things, take a look at NoDM. It's very raw and ...


8

What txwikinger said, but then to make it automatically run startx when you login, edit ~/.bash_profile -- that file is only executed on login shells, not in normal terminal emulators that you open on your desktop. EDIT: ~/.profile if you don't use bash


8

You can find this option under System > Administration > Login Screen. You'll need to "unlock" the window as this requires administrative privileges. You can then select the user and session you would like logged in automatically.


7

On a clean installation of Ubuntu, this should not be possible. This is because Ubuntu by default uses a passwordless root user (i.e. you cannot log in as it directly using normal password-based authentication, such as through the login screen or command-line interface). However, I suspect that you have changed the password of the root user, in which case I ...


7

If it's "just" a compiz crash, you should be able to restore it from one of the TTYs, even if the keyboard isn't working in X. hit ctrl+alt+F1 to get to the console Login with your usual username and password Type the following: DISPLAY=:0.0 compiz --replace & If compiz is still really hanging, you may need to kill it with more authority and try ...


7

The reason that doesn't work is because Ubuntu 11.10 has switched from GDM to LightDM. Try this command instead: sudo service lightdm stop


6

okay... let me 1st tell you that now Ubuntu does not use GDM as its display manager in version 12.04...It uses lightdm as its display manager... So the screen you want is actually lightdm So you will have to install lightdm as follows- Enter these commands in the terminal- sudo apt-get install lightdm lightdm After installing lightdm enter the ...



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