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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 and I cant switch.

I DONT want to change my default window manager, only switch it on the lightdm screen. It has disappeared in Ubuntu 12.10 I think.


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use sudo dpkg-reconfigure gdm command to switch window manager – devav2 Nov 3 '12 at 19:14
It changes default window manager. I want to select it in lightdm as before. – Jorge Chip Nov 3 '12 at 19:33
Yes. Choose lightdm and save it. Reboot the machine. You will be able to see the unity-greeter, where you can select a session – devav2 Nov 3 '12 at 19:41
up vote 4 down vote accepted

The icon does not appear if you don't have any other session type available. This is what happens after a clean install.

You need to install some other packages providing entries in /usr/share/xsessions, you find which packages with apt-file search /usr/share/xsessions.

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True! Last install I have unity-2d and some but I have just done a clean install (sorry for not saying). – Jorge Chip Nov 3 '12 at 20:37
But I have added a file to /usr/share/xsessions to have a "terminal session" but it didnt show up. Clues? – Jorge Chip Nov 3 '12 at 20:38
I don't think you can add files to that directory and expect them to show in the login manager. You have to install a package providing such items. – enzotib Nov 3 '12 at 21:20
Read that here:… – Jorge Chip Nov 3 '12 at 21:37

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