Current support and roadmap for discrete graphics card hot switching

[Timo Aaltonen]

On Thu, 15 Jan 2009, Stephane Marchesin wrote:

> On Thu, Jan 15, 2009 at 11:21, Albert Vilella <avilella at gmail.com> wrote:
>> Hi all,
>>
>> What is the current support and roadmap for discrete graphics card hot
>> switching in Xorg?
>
> There is no support, and AFAIK no roadmap either. There are many
> technical reasons why this is not possible today. In short, I wouldn't
> suggest getting a dual GPU laptop with the purpose of using it under
> linux, as one of the GPUs will probably stay unused.

or fail to start X without setting the BusID, since the server can't 
decide which one to use:

http://bugs.freedesktop.org/show_bug.cgi?id=18321

been there since 1.5, and unfortunately hasn't gathered much activity..

t