linux-kernel - Spurious power button event on resume from hibernate on Samsung R560

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Message-ID: <4A0F46F9.6080406@unchartedbackwaters.co.uk>
Date:	Sun, 17 May 2009 00:06:33 +0100
From:	Francis Russell <francis+lkml@...hartedbackwaters.co.uk>
To:	linux-kernel@...r.kernel.org
Subject: Spurious power button event on resume from hibernate on Samsung R560

Hi all,

I have a Samsung R560 laptop running amd64 Debian testing with a
2.6.29.3 kernel compiled from vanilla sources. Upon resume from
hibernate, it appears that the OS receives a power button event that
causes the system to shut down. I've verified this the best I can by
killing acpid then watching the output of /proc/acpi/event during
hibernate (triggered by writing 'disk' to /sys/power/state).

This problem looked very similar to that discussed in another Bugzilla
entry (http://bugzilla.kernel.org/show_bug.cgi?id=6612) so I had I
extended the changes made by the patch in the obvious way to the S4
state but it made no difference. Is this something the kernel should be
handling? How can I debug this further?

Many thanks,

Francis
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