linux-kernel - Re: [linux-pm] Acer 6592 TM, suspend to ram and resume freeze

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Message-Id: <1233712347.6643.7.camel@rzhang-desktop>
Date:	Wed, 04 Feb 2009 09:52:27 +0800
From:	ZhangRui <rui.zhang@...el.com>
To:	Robert Jarzmik <robert.jarzmik@...e.fr>
Cc:	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-pm@...ts.linux-foundation.org" 
	<linux-pm@...ts.linux-foundation.org>
Subject: Re: [linux-pm] Acer 6592 TM, suspend to ram and resume freeze

On Wed, 2009-02-04 at 04:36 +0800, Robert Jarzmik wrote:
> First of all, sorry for the duplicate on linux-pm, but as Pavel suggested, this
> topic gains wider audience as acpi and pm are involved.
> 
> I have an issue with my laptop with suspend to ram.
> My laptop is an Acer Travelmate 6592g :
> 
> > [rj@...vet wireshark-1.0.5 (master)]$ sudo s2ram -i
> > This machine can be identified by:
> >     sys_vendor   = "Acer"
> >     sys_product  = "TravelMate 6592"
> >     sys_version  = "PSMBOU-1234567"
> >     bios_version = "V1.53   "
> 
> The kernel running is the last I have : 2.6.29-rc1, but the problem is the same
> whatever the kernel version I take (between 2.6.16 and 2.6.29-rc1).
> 
> The issue is that even if the laptop enters suspend correctly, it hangs on
> comming out of it. After some research, I cornered down the module which changes
> the behaviour : acpi_cpufreq.ko.
> 
> When I forbid the laptop to load this module, the suspend to ram works like a
> charm, in "init" single mode or multi-user mode. When I load the module, the
> resume always hangs (fan goes high speed like crazy, no LCD back, hard drive led
> stays on, caps_lock key not responsive, ...)
what if you build in the ACPI processor driver (CONFIG_ACPI_PROCESSOR=y)
and boot with "processor.max_cstate=1"?

> 
> Now, I notice that loading acpi-cpufreq triggers the following message :
> > log: Jan 19 18:23:42 velvet kernel: ACPI: EC: non-query interrupt received, switching to interrupt mode
> 
I don't think these two are related. can you please make a double check?

thanks,
rui

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