Quadro 320M colour "bleeding" in some non-native resolutions

Hi and thanks for the great forum, hope I can find some guidance her
for a very confusing problem.

I've just bought a HP 8710p, which has a Quadro 320M GPU. In *some
non-native res's, colours "bleed" or "fringe" (not sure what th
correct term is) when solid blocks of colour are beside each other.
Not evident in photos, only with flat colour areas. For example:

[image: http://img81.imageshack.us/img81/8367/snap2copykv3.jpg]
(mock-up of what I see in the Colour Settings page of the nVidi
control panel)

As you can see, it looks like a badly compressed jpeg, with colou
blocks "fringing" beside each other. I've tried various tests an
these are the results:

1. Resolutions *below* 1280 pixels across (i.e. from 1176x664 down t
800x600) perform fine, without fringing, all colour borders crisp.
2. Resolutions 1280 across and above exhibit the fringing effect
except of course its native res of 1920x1200.
3. HP has swapped the panel twice now, from an LG to a Samsung back t
an LG again, results are the same.
4. An old Samsung external panel plugged in performs fine in al
non-native resolutions.

Sooo... At first I thought it was the LCD panel at fault, but now
think it's a GPU driver or hardware issue. But I'd love to know i
anyone has had similar experiences or knows something about thi
problem. I have the latest drivers from the HP site for this machine
and even tried the Forceware which turns it into an 8700M-GT, but n
change in the fringing behaviour.

Considering an external panel scales 100% ok, and *three* differen
internal panels in this machine don't (with the exact same cut-of
point at 1280x720), I'm stumped.. very weird problem!

Any advice appreciated

--
wavefor
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