Current support and roadmap for discrete graphics card hot switching

[Alan Cox]

> Right, which reduces it to a simple power management issue akin to
> powering down the 3D core on any modern chipset when you're not doing
> any rendering.
> 
> Adding different devices with separate drivers is another matter
> altogether.

Isn't dual driver support logically equivalent to xrandr mirrored to both
with either one or the other currently a 'switched away' vt ?