linux-kernel - Re: [Bugme-new] [Bug 11717] New: Pressing suspend button suspends, but does not wakes up

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Message-ID: <20090820025401.GB1787@ime.usp.br>
Date:	Wed, 19 Aug 2009 23:54:01 -0300
From:	Rogério Brito <rbrito@....usp.br>
To:	Justin Mattock <justinmattock@...il.com>
Cc:	Pavel Machek <pavel@...ey.karlin.mff.cuni.cz>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Arjan van de Ven <arjan@...ux.intel.com>,
	linux-kernel@...r.kernel.org, yakui.zhao@...el.com,
	bugme-daemon@...zilla.kernel.org,
	linux-pm@...ts.linux-foundation.org, rjw@...k.pl,
	bugzilla@...ts.sourceforge.net, rui.zhang@...el.com
Subject: Re: [Bugme-new] [Bug 11717] New: Pressing suspend button suspends,
 but does not wakes up

Dear Zhang, and other people.

On Nov 11 2008, Rogério Brito wrote:
> Zhang Rui wrote:
> > let's focus on the suspend/resume problem in this bug entry.
> > So please stop using suspend button or lid button to do suspend/resume
> > test.
> > You can use "echo mem > /sys/power/state" to suspend and use power button
> > to resume to see how suspend/resume works on your laptop.
> 
> What I get when I use this is that the notebook goes to suspend state and
> the only button that it has (power button) has a blue light that starts
> blinking.

Zhang, you mentioned that you thought that my notebook could resume if
the BIOS is skipped, right?

Setting 

# echo 1 > /sys/power/pm_trace

I tested all the variations of:

# echo ??? > /sys/power/pm_test
# echo mem > /sys/power/state

that could be put into /sys/power/pm_test, but the notebook always
"resumed" ("woke up" from "sleep").

On the other hand, if I do a real sleep (say, putting none into
pm_test), then:

* the notebook goes to sleep;
* when I press the power button, the machine power itself off;
* a few seconds after that, it powers itself on again.

Unfortunately, at this point, *everything* is black in the monitor and
there are no responses (not even Magic SysRq).

The range of kernels tested was: 2.6.24 to 2.6.31-rc5.

As can be obviously seen from the kernels and the original report date,
this bug is more than one year old (it was filed with bugzilla on
2008-10-07).

Please, help.

Thanks, Rogério Brito.

-- 
Rogério Brito : rbrito@...ckenzie,ime.usp}.br : GPG key 1024D/7C2CAEB8
http://www.ime.usp.br/~rbrito : http://meusite.mackenzie.com.br/rbrito
Projects: algorithms.berlios.de : lame.sf.net : vrms.alioth.debian.org
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