Ok, I tried their newest OpenGL 4.3 testing driver:
Let's just say, it's not what I'd call ideal.
OpenGL vendor string: Advanced Micro Devices, Inc.
OpenGL renderer string: AMD Radeon HD 7970M
OpenGL version string: 4.3.12414 Compatibility Profile Context 12.10.17
1. There still doesn't seem to be dynamic switching. Maybe I'll try bumblebee again.
2. One screen is kind of ok. Two screens... What can I say? No really, what can I say to this?
Does nobody at AMD have this hardware to test? Or do they just not bother about their top highend hardware at all, even on their "supported" distributions like ubuntu?
(Of course someone has reported that: http://ati.cchtml.com/show_bug.cgi?id=707 about six months ago)
Maybe I'll try bumblebee again.
If you ever get asked what's wrong with proprietary drivers, fglrx is your answer. If you value open source drivers, buy it. If you just want to use the proprietary driver: Forget it. It just plain doesn't work correctly.