Comment 4 for bug 34005

I did a new Install (flight4 - daily updates - so now I am on flight 5),
 I confirm the bug.
I have a Laptop Fujitsu Siemens 8020 with

ATI Technologies, Inc. M24 1P [Radeon Mobility X600]

with ati drivers i get no signal on external monitor but I can move the windows and mouse to the (black) screen.

So logically the xineraa seams to work.
Only the screen remains black.

External screen uses DPMS, so Timing should not be the problem.

if I use fglrx drivers and activate "Big Desktop" Mode, I get a signal!
but thers seeme other Bugs...
with the gpl driver there is garbage on screen.
gdm or kdm lets me move the mouse to the external screen
after logon the mouse and windows are limited to the internal (Laptop) screen.