Problem with Radeon 7000 (Cannot read V_BIOS)

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Hi, I am experiencing a problem with X that I am unable to solve. I hope
someone here will be kind enough to help.
I want to use my onboard vga-card together with a pci-card to set up
dual-screen. Here are my details:
OS: Ubuntu
X : xserver-xfree8 4.3.0.1
Skjermkort 1: Onboard i810
Skjermokrt 2: Sapphire Radeon 7000 PCI
Monitor 1 and 2: Eizo FlexScan L550

First I configured my i810 and left monitor as screen 1, and my radeon and
right monitor as screen 2.
I set up my ServerLayout to use only screen 1, which worked. I then set it
up to use only screen 2, which worked. I then tried to use both, which
didn't work. The weird thing is when I reverted the changes I had made,
using only screen 2 does not work anymore.
Here is the error-msgs from startx:
 (EE) RADEON(0): Cannot read V_BIOS
 (EE) RADEON(0): No valid modes found
 (EE) Screen(s) found, but none have a usable configuration.

As previously stated, it worked perfectly before! I have also been able to
reproduce the errors on another identical machine.
Here are links to my XF86Config-4, the entrie output from startx, as well
as the log. Please note that the log reports trying a hole bunch of modes
not set up in XF86Config-4. Is this normal behaviour?
http://hanab.org/paste/startx
http://hanab.org/paste/XF86Config-4
http://hanab.org/paste/XFree86.0.log

I have two goals. Fisrt, to get my Radeon back up, and understand why it
does not work atm. Second, to be able to use it in a dual-screen setup.
Thanks a lot for your time!

Sincerely,
Anders Schau Knatten
Norway


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