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Date: Wed, 20 Feb 2008 19:25:16 +0000
From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Jeff Chua <jeff.chua.linux@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
       Jesse Barnes <jesse.barnes@intel.com>,
       lkml <linux-kernel@vger.kernel.org>, Dave Airlie <airlied@linux.ie>,
       "Rafael J. Wysocki" <rjw@sisk.pl>, linux-acpi@vger.kernel.org,
       suspend-devel List <suspend-devel@lists.sourceforge.net>,
       Greg KH <gregkh@suse.de>
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Subject: Re: 2.6.25-rc2 System no longer powers off after suspend-to-disk. Screen becomes green.
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On Thu, Feb 21, 2008 at 02:49:39AM +0800, Jeff Chua wrote:

> Here's an interesting discovery. After I found that "echo reboot >
> /sys/power/disk" does reboot, I tried "echo shutdown >
> /sys/power/disk", it does shutdown properly.
> 
> With "platform" it refuses to shutdown. Both reboot and shutdown still
> end up with Mr. Green at resume.

That kind of suggests that the ACPI platform code is hitting the 
hardware directly - we've seen similar issues with PATA controllers. The 
right thing to do here is almost certainly just to avoid explicitly 
powering down hardware on hibernation.

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