Subject: Re: 2.6.22.6 + rt9: suspend/hibernate not working
From: Daniel Walker <dwalker@mvista.com>
To: Fernando Lopez-Lezcano <nando@ccrma.Stanford.EDU>
Cc: Ingo Molnar <mingo@elte.hu>, linux-kernel@vger.kernel.org,
       planetccrma@ccrma.Stanford.EDU
In-Reply-To: <1188951154.26511.90.camel@cmn3.stanford.edu>
References: <1188951154.26511.90.camel@cmn3.stanford.edu>
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Date: Tue, 04 Sep 2007 17:15:09 -0700
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On Tue, 2007-09-04 at 17:12 -0700, Fernando Lopez-Lezcano wrote:
> 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?

If you have high resolution timers enabled you could try disabling it,
and see if the problem persists .

Daniel

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