On Mon, Sep 11, 2023 at 12:12:43PM +0400, Marc-André Lureau wrote: > > Gerd, here's the question for you: why are "device" and "head" QOM > > properties in the first place? What are they needed for? > > > > You get QOM tree introspection (ex: (qemu) qom-get > /backend/console[0]/device type). Other than that, I don't think it > brings anything else.
You can configure vnc server(s) to show a specific device + head, which allows to run multihead configurations by using multiple vnc servers (one for each head). You can link input devices to device + head, so input events can go to different devices depending on where they are coming from. Which is most useful for tablet devices in a vnc multihead setup, each head has its own tablet device then. Requires manual guest-side configuration to establish the same tablet <-> head relationship (tested that years ago with X11, not sure if and how this can be done with wayland). HTH, Gerd
