Re: [Qemu-devel] [PATCH] all vga: refuse hotplugging.

[Gerd Hoffmann <kraxel@redhat.com>]

   Hi,

>> I think having two gfx screens mapped to two qemu consoles, then be able
>> to switch between them via Ctrl-Alt-<nr>  (like you switch today to text
>> consoles) could be doable without too much effort.  Question is how
>> useful this would be as you can't see your two screens at the same time.
>
> Actually I was thinking of registering multiple graphic consoles, each
> of them could be rendered by a different frontend (sdl/vnc)
> independently. We would have multiple DisplayStates for that.

Possible, but certainly alot of work.  Tons of code in qemu can't handle 
multiple DisplayStates.  Try it and you'll see.

>> With qxl+spice the spice client will open a new window for the secondary
>> display.  With vnc+sdl you'll see the primary display only.
>
> So you are doing exactly what I wrote above, right?

No.  The secondary display has no DisplayState.  That is the reason why 
only the spice client will see it.

cheers,
   Gerd