Somewhat off topic, but do you know why KMS seems to be such a big hurdle for the 3d video vendors' drivers? ATI's binery blob driver also doesn't support KMS e

Somewhat off topic, but do you know why KMS seems to be such a big hurdle for the 3d video vendors' drivers? ATI's binery blob driver also doesn't support KMS even though they seem to actively develop it. The open source radeon driver does, but it doesn't support a sufficient amount of OpenGL to allow commercial native linux games or wine+directx games to run. On the surface it doesn't seem like KMS support would be a big problem for people otherwise building complex graphics drivers. As an aside, I use a laptop with AMD's switchable graphics solution. You can set and forget it to either setting rather well, but if you actually try switching back and forth you start running into tons of bugs, instabilities, usability problems etc.