Knut Petersen wrote:

As this driver obviously has problems at least for
the 915GM: Could someone please point me to a
reasonable register reference for the graphics part
of that chip?

That would be Xorg/XFree86 source.  Intel has not released
docs after the 815.

BTW: Is there really no maintainer?

It's Sylvain Meyer, but he's silent for the past few months.

Tony