linux-kernel - 2.6.22.6 + rt9: suspend/hibernate not working

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Message-Id: <1188951154.26511.90.camel@cmn3.stanford.edu>
Date:	Tue, 04 Sep 2007 17:12:34 -0700
From:	Fernando Lopez-Lezcano <nando@...ma.Stanford.EDU>
To:	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org
Cc:	nando@...ma.Stanford.EDU, planetccrma@...ma.Stanford.EDU
Subject: 2.6.22.6 + rt9: suspend/hibernate not working

Hi Ingo... I'm getting reports from some of my Planet CCRMA users (which
I confirmed) that the latest rt kernel I released has broken suspend
(tested on fc6 & fc7, stock Fedora kernel works fine - the rt
configuration files are virtual clones as far as possible of the
standard Fedora kernel config files). 

I don't know where to start debugging this. When suspend is initiated it
freezes with a "Stopping tasks ... " message in the text console - a
hard power cycle is the only way to get the machine back to normal. 

kernel/power/process.c seems to contain that string in the
freeze_processes function so it looks like the freezer is not freezing
tasks as no "done" message is ever printed. 

What could we do to help?
-- Fernando

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