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["stefan.witwicki" <witwicki@xxxxxxxxx>]

Pauli,

Thanks for the help.

> fglrx-kernel-source is not part of driver that you want. You should 
> remove it.

After removing that package, I was back to the blackscreen problem 
(e.g. display showing up only on the external monitor), but my visual effects (compiz) were indeed working!

> The initial black screen problem looks like kernel modesetting bug. So 
> workaround would be booting with radeon.modeset=0 to use old UMS driver.

This workaround fixed the blackscreen problem!  However, compiz doesn't seem to play nicely with the old driver:
---
$ compiz
WARNING: Application calling GLX 1.3 function "glXCreatePixmap" when GLX 1.3 is not supported!  This is an application bug!
^X^CWARNING: Application calling GLX 1.3 function "glXDestroyPixmap" when GLX 1.3 is not supported!  This is an application bug!
---
The visual result is that the far right section of the display area (effecting about 2/3 the screen of one of my monitors) wasn't displaying properly... a colorful lack of refreshing and some blackness.  

So it seems that at the moment, I can't have my cake (compiz) and eat it
too (on dual monitors).

-- 
[Lucid alpha2] ATI Mobility Radeon 9600 not displaying on LVDS
https://bugs.launchpad.net/bugs/522394
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