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Date: Thu, 15 Jan 2009 02:59:45 +0000
From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Zhang Rui <rui.zhang@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
       Martin Michlmayr <tbm@cyrius.com>,
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       fengguang.wu@intel.com
Subject: Re: [2.6.28] Kernel panic after closing lid on HP 2510p
Message-ID: <20090115025945.GA19472@srcf.ucam.org>
References: <200901121356.46236.elendil@planet.nl> <20090113123056.GA2464@deprecation.cyrius.com> <20090114162603.c632d82e.akpm@linux-foundation.org> <20090115020311.GA18740@srcf.ucam.org> <20090114181542.34614acf.akpm@linux-foundation.org> <20090115022106.GA19069@srcf.ucam.org> <1231988103.20746.149.camel@rzhang-dt>
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On Thu, Jan 15, 2009 at 10:55:03AM +0800, Zhang Rui wrote:

> DIDL is an IGD OpRegion field, as the Supported Display Devices ID List.
> it's evaluated by the _DOD method when ACPI video driver is loaded.
> And according to the spec, "The graphics driver writes to this field
> once during its initialization"
> if DIDL is not empty, a flag is set and the SMI will not be invoked when
> closing the lid.
> In our tests, this field (DIDL) is set in windows when _DOD is invoked
> while it's not in Linux.
> I can workaround this bug by setting the DIDL manually in AML code.

Oh, huh. Yeah, that sounds plausible. I'll give it a go here tomorrow.

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