[Bug 1868617] [NEW] multiseat: route different spice tablet events to distinct vdagents

[dkg]

Public bug reported:

docs/multiseat.txt says:

> Note on spice: Spice handles multihead just fine.  But it can't do
> multiseat.  For tablet events the event source is sent to the spice
> agent.  But qemu can't figure it, so it can't do input routing.
> Fixing this needs a new or extended input interface between
> libspice-server and qemu.  For keyboard events it is even worse:  The
> event source isn't included in the spice protocol, so the wire
> protocol must be extended to support this.

I'm not sure exactly what "can't figure it" means, but it looks to me
like qemu can't route incoming tablet events from a spice client to
distinct vdagent channels.

I think this part of the process can be fixed within qemu.  I've
reported https://gitlab.freedesktop.org/spice/spice-gtk/issues/121 to
address the issues with the keyboard interface at the protocol level.

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1868617

Title:
  multiseat: route different spice tablet events to distinct vdagents

Status in QEMU:
  New

Bug description:
  docs/multiseat.txt says:

  > Note on spice: Spice handles multihead just fine.  But it can't do
  > multiseat.  For tablet events the event source is sent to the spice
  > agent.  But qemu can't figure it, so it can't do input routing.
  > Fixing this needs a new or extended input interface between
  > libspice-server and qemu.  For keyboard events it is even worse:  The
  > event source isn't included in the spice protocol, so the wire
  > protocol must be extended to support this.

  I'm not sure exactly what "can't figure it" means, but it looks to me
  like qemu can't route incoming tablet events from a spice client to
  distinct vdagent channels.

  I think this part of the process can be fixed within qemu.  I've
  reported https://gitlab.freedesktop.org/spice/spice-gtk/issues/121 to
  address the issues with the keyboard interface at the protocol level.

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