Are there any distributions with a working on-the-fly hybrid graphics switcher?

Question

vga_switcheroo is used in many distros (including Arch), but it would be nice to have real-time switching.

Answer 1

As I understand it, real-time switching is simply not possible without restarting X, and due to the basic architecture of X it never will be. That seems to be the basic limitation. I've heard that Wayland offers some options in this direction.