KDE-Forum.org

You should try to figure out how to configure X Windows to use only one screen

If FragMaker wants to run his full-screen app in the other display,
then he'd probably start it with something like
>myapp -display :0.1
but if he configures X to use just one display, then display :0.1
won't exist.

Respectfully disagreeing with Rinse, I'd say he needs to configure X
for both screens and KDE for one screen only.

The question is, how? He seems to have cracked the X part already,
but the KDE part has him stuck, and me too.

Is it truly impossible to control how (and whether) KDE starts up
on the second screen? Can anyone even hint at where the config
files for KDE on the second screen might be?

After more trawling, found a tip from a couple of months ago on the Admin forum.
[URL]http://www.kde-forum.org/post/57994/lastpost.html#post57994[/url]

At first, I thought changing the environment variable KDE_MULTIHEAD
from true to false would do the trick, but it doesn't - kcminit overrides it
at start time.

It seems you need to edit your kcmdisplayrc file
(mine is at ~/.kde/share/config/kcmdisplayrc, yours may vary)
to find or create the [X11] section so that it reads

[X11]
disableMultihead=true


Now, display :0.1 is completely blank, with no kde stuff on it at all,
but you can still use it to run your app.