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I'm in Gnome but if I logout I can get to a menu where I can choose KDE as well as other window managers. The problem is I have a program that's running inside Gnome and I don't want to stop it. Is there some way I can get into KDE without having to stop this program?

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There's also Xephyr and Xnest. – new123456 Oct 28 '11 at 11:22
up vote 4 down vote accepted

Isn't there a switch user option on the logout screen which keeps the original user logged in but allows the second one to log in as well?

Alternatively you could log into a terminal, say VT1, and issue the command:

startx -- :1

which will start a second graphical console on VT8.

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Does this program have a window? or can it just run in the background?

If it's just running on a terminal, one simple thing you can use screen to keep the process running.

Also look at the the nohup command

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It has a window. It's VMWare Player. If it was VMWare server, then it could run in the backgroiund, but it's not. Will bg make it run in the backgroun? – tony_sid Aug 8 '10 at 18:08
bg won't help here. – daxim Aug 9 '10 at 15:49

I once used the gdm.conf to do so. And as following link mentioned, this not gonna work as before.

Ubuntu 10.04 (Lucid)

The steps are the same as 9.10 -- GDM 2.30 and ConsoleKit 0.4.1 do not have native Multiseat support, nor will GDM lauch two static X sessions like it used to in 2.20. If you do not want to use KDM, Multiseat branches exist for GDM and ConsoleKit; they are described here:

You can check more details on page to use kdm to get this done:

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