[libvirt] [PATCH] qemu: qxl devices don't support multifunction yet

Daniel P. Berrange berrange at redhat.com
Tue Sep 20 12:46:04 UTC 2011

On Tue, Sep 20, 2011 at 02:41:44PM +0200, Marc-André Lureau wrote:
> Hi
> On Tue, Sep 20, 2011 at 3:11 AM, Wen Congyang <wency at cn.fujitsu.com> wrote:
> >
> > So I think qxl device supports multifunction.
> >
> It works on Linux, but not on Windows. It is most likely a driver bug,
> but nobody so far found a solution.
> Using windows kernel debugger, the only "interesting" message I could find is:
> "VIDEOPRT: Multifunction board not allowed to start"
> (I compared windows kernel log of various pnp/pci/video mask with and
> without multifunction qxl, it didn't help me to find why windows
> refuse to start it)

Google brought me to these pages


Which suggest we need a different .inf file to refer to something
called 'mf.sys'. I've no idea whether this is relevant or not, but
perhaps one of the windows QXL devs can take a look at it.

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