Back in 2008 the developers behind the Nouveau reverse-engineered NVIDIA driver dropped support for their classic Mesa driver even before there was ever a stable release of it.
Intel's Poulsbo Linux driver is a bloody mess. The Poulsbo chipset is known commercially as the GMA 500 that's found in many netbooks as of late, but it isn't actually an Intel design but the graphics processor design was licensed from PowerVR...
In late August we started asking our readers for any questions they had for NVIDIA about Linux and this graphics company's support of open-source operating systems. Twelve pages worth of questions were accumulated and we finally have the answers to a majority of them.
The logic of open source is increasingly clear to a growing number of businesses. Ironically, however, that logic generally dovetails with a recognition of how to marry open source with a proprietary revenue driver.