Re: [Xen-devel] Commit moratorium to staging

[Paul Durrant <Paul.Durrant@xxxxxxxxxx>]

> -----Original Message-----
> From: Wei Liu [mailto:wei.liu2@xxxxxxxxxx]
> Sent: 01 November 2017 10:48
> To: Roger Pau Monne <roger.pau@xxxxxxxxxx>
> Cc: Julien Grall <julien.grall@xxxxxxxxxx>; committers@xxxxxxxxxxxxxx; xen-
> devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>; Lars Kurth <lars.kurth@xxxxxxxxxx>;
> Paul Durrant <Paul.Durrant@xxxxxxxxxx>; Wei Liu <wei.liu2@xxxxxxxxxx>
> Subject: Re: Commit moratorium to staging
> 
> On Tue, Oct 31, 2017 at 04:52:37PM +0000, Roger Pau Monné wrote:
> >
> > I have to admit I have no idea why Windows clears the STS power bit
> > and then completely ignores it on certain occasions.
> >
> > I'm also afraid I have no idea how to debug Windows in order to know
> > why this event is acknowledged but ignored.
> >
> > I've also tried to reproduce the same with a Debian guest, by doing
> > the same amount of save/restores and migrations, and finally issuing a
> > xl trigger <guest> power, but Debian has always worked fine and
> > shut down.
> >
> > Any comments are welcome.
> 
> After googling around, some articles suggest Windows can ignore ACPI
> events under certain circumstances. Is it worth checking in the Windows
> event log to see if an event is received but ignored for reason X?

Dumping the event logs would definitely be a useful thing to do.

> 
> For Windows Server 2012:
> https://serverfault.com/questions/534042/windows-2012-how-to-make-
> power-button-work-in-every-cases
> 
> Can't find anything for Windows Server 2016.

No, I couldn't either. I did find 
https://ethertubes.com/unattended-acpi-shutdown-of-windows-server/ too which 
seems to have some potentially useful suggestions.

  Paul

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