http://bugs.freedesktop.org/show_bug.cgi?id=10178





------- Comment #2 from [EMAIL PROTECTED]  2007-03-04 14:56 PST -------
looks like a phenomen nicknamed "checkerboarding" to me. This is likely caused
by the driver enabling all 8 pipelines of the r300 chip, whereas the 9500 only
has 4 which are guaranteed to work (and apparently on your specific card indeed
not all 8 work).
The driver needs some fixes in that area, it will enable always all pipes of a
given chip family (though I think it's less of a problem for r4xx cards, those
are typically hard-locked IIRC and you can't increase the pipe count beyond
what is officially supported).
If we're lucky it's possible to detect the "official" pipe count by pci id and
change the driver accordingly. Note there may be needed some other subtle
configuration changes, for example r9500 does not (opposed to r9500pro or 9700)
support hierarchical-z.


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