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RE: [Xen-devel] [PATCH 0/4] HVM Virtual S3

  • To: "Kaushik Barde" <Kaushik_Barde@xxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Yu, Ke" <ke.yu@xxxxxxxxx>
  • Date: Thu, 17 May 2007 12:20:24 +0800
  • Delivery-date: Wed, 16 May 2007 21:18:57 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AceX2gAl4h+XcEYPRxOJnM8JUiP1/QAVtADQAAIMkKA=
  • Thread-topic: [Xen-devel] [PATCH 0/4] HVM Virtual S3

The symptom is that: if use stdvga in config file, the windows guest
will not show "standby" in shutdown menu, which means S3 is disabled.
The following link explains why.

When use cirrus_vga, the "standby" appears in shutdown menu. However,
after "standby" is pressed, windows will pop up a dialog box, saying
default monitor driver has no power  management support, so windows
refuse to go further. 

I think Windows has strict checking on standby. it won't do standby
until the required device driver has suspend/resume support. so it is
due to qemu device emulation, not ACPI in rombios.

Best Regards

Kaushik Barde  wrote on 11:14:
> Can you please shed some more light on Windows guest s3 behavior?
> Is it due to inadequate ACPI support in rombios?
> -Kaushik

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