495209 - firefox does not start on second screen when it is running on the first one

Status: RESOLVED DUPLICATE of bug 319965

(Firefox :: General, enhancement)

Description

[janpieter sollie]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.9.1b4) Gecko/20090423 Firefox/3.5b4
Build Identifier: Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.9.1b4) Gecko/20090423 Firefox/3.5b4

this bug is probably related to this one, but the situation is different:
https://bugzilla.mozilla.org/show_bug.cgi?id=122698

I have a dual screen config, 1 with KDE, and due to the lack of dual-screen support of kde 4.2.3, iceWM on the second screen.
When I start Firefox on one X screen, everything is running fine, no matter if it's the first or second screen.
when I start it on the second one, it claims Firefox is not responding (in fact, it's running fine on the other X screen).
To start a window on the second X screen, I need to close firefox on the first one, and vice versa.
Is there any possibily to make firefox more 'global'? (so the engine can put windows on different screens)

If this topic is in fact already posted, sorry, but I was a bit confused by the many duplicates / related bugs of bug 122698, and I found none which exactly described the problem

Reproducible: Always

Steps to Reproduce:
1. install a dual X screen setup
2. start a window manager on every screen, eg: http://en.gentoo-wiki.com/wiki/X.Org/Dual_Monitors#Independent_Dual_Head_in_KDE_4.2
3. start firefox with the first window manager
4. start firefox with the second one
Actual Results:  
a dialog box opens: "firefox is actually running, but is not responding. To open a new window ...."

Expected Results:  
open a new window.  I don't care if it's a different firefox process or the same

$DISPLAY may be a nice help: if($DISPLAY == (display of running instance)) startWindow() else create_new_process()