[Spice-devel] [RFC PATCH v2 00/20] Monitor ID rework

[Gerd Hoffmann]

On Mon, Aug 27, 2018 at 05:08:43PM +0200, Lukáš Hrázký wrote:
> On Fri, 2018-08-24 at 13:49 +0200, Gerd Hoffmann wrote:
> > 
> > Well, there is the vnc console for the nvidia vgpu.  Which wasn't
> > mentioned in this thread yet, how does it fit into the picture btw?  I
> > guess there will be two channels, one classic display channel for the
> > vnc console and one stream channel for the video stream from the guest
> > agent?
> 
> I was quite confused by this, so I've asked around and the confusion
> remains :) I have no idea how the VNC fit into the picture, I didn't
> know about it.
> 
> But a VNC console would be something outside of SPICE? Or not? You seem
> to be saying the VNC console would be sent over a SPICE display
> channel? That doesn't make much sense to me.

Well, "vnc console" is how the nvidia guys name it, the term doesn't
really match.  It's basically a simple framebuffer where the nvidia
driver renders the guest display, and a vfio interface for qemu to
access it.  From spice point of view it looks very simliar to the qemu
standard vga, i.e. it is a classic display channel.

The nvidia driver renders to it at a low framerate (10fps).  It is
intended to be used in case the streaming agent doesn't work
(installation, trouble shooting, ...).

cheers,
  Gerd