Re: [patch]: ACPI: Add the Pansonic CF51 box to the dmi check table

[Matthew Garrett <mjg59@srcf.ucam.org>]

On Thu, Mar 19, 2009 at 10:50:03AM +0800, yakui_zhao wrote:
> On Thu, 2009-03-19 at 10:43 +0800, Matthew Garrett wrote:
> > On Thu, Mar 19, 2009 at 10:42:02AM +0800, yakui_zhao wrote:
> > > Maybe there is no such blacklist on windows.
> > 
> > Quite. There shouldn't be on Linux.
> If there is no such blacklist, the suspend/resume can't wok well on some
> boxes. IMO this can be workaround for some boxes that can't be resumed.

Workarounds should be temporary. Blacklists scale badly. In the long run 
we need to determine why this doesn't work.

> > > I verify this problem on windows by using KVM and find that the _PTS
> > > object is called after device suspend in course of hibernate.(No S3 is
> > > supported on KVM). In theory the _PTS is also called after device
> > > suspend in course of suspend.
> > 
> > What would it take to fake S3 on KVM enough that we could instrument 
> > Windows' behaviour?
> The graphics simulated in KVM is too old.

Is this simply a matter of the driver setting a flag to indicate that it 
supports S3?

-- 
Matthew Garrett | mjg59@srcf.ucam.org
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