From: Pavel Machek <pavel@ucw.cz>
To: Man Spaz <man.spaz@ymail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Tips on debugging suspend/resume failure
Date: Sat, 16 Oct 2010 15:31:05 +0200 [thread overview]
Message-ID: <20101016133105.GB1806@ucw.cz> (raw)
In-Reply-To: <103889.39682.qm@web120217.mail.ne1.yahoo.com>
Hi!
> I have a machine x86 arch with no serial port, only console. I have a suspend/resume (mem, not hibernate) problem (not sure which one it is, if something fails on the suspend, or the resume fails - but it does seem to go to sleep) that doesn't suspend nor resume at all, using stock standard x86_64 kernel.
>
> I compiled everything as a module and removed all unnecessary ones, so I cannot isolate the problem to a specific driver. This very same machine had no problems with <2.6.34.2 kernels.
>
> But the question remains, how to get debug out? Is there a dmesg buffer that can persist if DRAM is being refreshed perhaps? Is there another way to skin this mongrel, I mean cat?
>
git bisect ?
Also you could try to blink keyboard leds, beep the speaker or debug
using 'hang/reboot' trick.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2010-10-17 5:28 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-08 4:09 Man Spaz
2010-10-08 4:37 ` Chris Ball
2010-10-16 13:31 ` Pavel Machek [this message]
2010-10-08 15:04 Lima Union
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