Strange IGP/nVidia behaviour in 7.2 vs 1.3

[Mikael Jansson]

Hi,

I'm trying to setup a dualhead desktop using the integrated (i965G) graphics
adapter and my PCIe 8600GTS card.  My BIOS is set to IGP-only, or it'll be
hidden as there's a PCIe adapter installed.

In Ubuntu Gutsy Gibbon (Xorg-1.3), X dies, and in Feisty Fawn (Xorg-7.2)  I get
a desktop with purple stripes on the monitor (20" TFT, DVI) connected to the
8600GTS. The i965G-connected monitor (15" TFT, VGA) works well, from what I
could tell.

I have log files and a photo of the desktop at the following address:

  http://svnbox.mine.nu/dump/misc/mh/

Any idea what's going on?

(Ultimately, I'd like to setup with a rotated TFT on the i965G's VGA output, and
the 15" and 20" on the nVidia card's dual-DVI outputs -- but one step at a time)

Thanks in advance,
-- Mikael