Problem waking Thinkpad G40 from S3 suspend to RAM

Problem waking Thinkpad G40 from S3 suspend to RAM

[Sudhakar Chandra]

Hi,

I have Debian (unstable) installed on my Thinkpad G40.  I have a 
hand-compiled kernel 2.6.8.1 (patched with bootsplash, ACPI and swsusp2 
patches from 10 days ago) that I am using. Most drivers are compiled as 
modules except for framebuufer, bootsplash, swsusp2, etc.

I am able to hibernate my laptop (i.e. suspend to disk) fine using 
swsusp2. I am also able to suspend my laptop to RAM just fine (passing 
acpi_mode=s3_bios to kernel). My problem is waking up from an S3 suspend 
to RAM sleep.  When suspended, the "sliver / crescent moon" LED comes on 
indicating that the laptop is sleeping.  When I close the lid and reopen 
it, the laptop tries to wake up and I hear a beep.  But nothing shows up 
on the display. The crescent moon LED is also no longer illuminated. I 
know that the laptop has woken up because at this stage I can press the 
power button and initiate a swsusp2 suspend.  When I restart I am able 
to wake up the state that was suspended to disk.

My questions:

1. Has anyone got waking up from S3 suspend to work properly on a G40? 
If so, how?

2. I upgraded to the latest BIOS on IBM's support site. If this BIOS is 
still broken, I guess I need to upgrade my DSDT table. Unfortunately, 
the documentation I read refers me to an iasl compiler that I cannot 
find at the indicated site:
http://developer.intel.com/technology/iapc/acpi/downloads.htm

3. Is there a way to invoke swsusp2 on S4 suspend?

I tried my experiements above with only acpi modules loaded and nothing 
else in single usermode (with pcmcia, usb, etc., unloaded).

Thanks.

Thaths
-- 
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Re: Problem waking Thinkpad G40 from S3 suspend to RAM

[Paul Ionescu]

Hi,

I hope you tried with "acpi_sleep=s3_bios" not "acpi_mode=s3_bios" as you
wrote.


On Sat, 16 Oct 2004 19:38:52 -0700, Sudhakar Chandra wrote:

> Hi,
> 
> I have Debian (unstable) installed on my Thinkpad G40.  I have a
> hand-compiled kernel 2.6.8.1 (patched with bootsplash, ACPI and swsusp2
> patches from 10 days ago) that I am using. Most drivers are compiled as
> modules except for framebuufer, bootsplash, swsusp2, etc.
> 
> I am able to hibernate my laptop (i.e. suspend to disk) fine using
> swsusp2. I am also able to suspend my laptop to RAM just fine (passing
> acpi_mode=s3_bios to kernel). My problem is waking up from an S3 suspend
> to RAM sleep.  When suspended, the "sliver / crescent moon" LED comes on
> indicating that the laptop is sleeping.  When I close the lid and reopen
> it, the laptop tries to wake up and I hear a beep.  But nothing shows up
> on the display. The crescent moon LED is also no longer illuminated. I
> know that the laptop has woken up because at this stage I can press the
> power button and initiate a swsusp2 suspend.  When I restart I am able to
> wake up the state that was suspended to disk.
> 
> My questions:
> 
> 1. Has anyone got waking up from S3 suspend to work properly on a G40? If
> so, how?
> 
> 2. I upgraded to the latest BIOS on IBM's support site. If this BIOS is
> still broken, I guess I need to upgrade my DSDT table. Unfortunately, the
> documentation I read refers me to an iasl compiler that I cannot find at
> the indicated site:
> http://developer.intel.com/technology/iapc/acpi/downloads.htm
> 
> 3. Is there a way to invoke swsusp2 on S4 suspend?
> 
> I tried my experiements above with only acpi modules loaded and nothing
> else in single usermode (with pcmcia, usb, etc., unloaded).
> 
> Thanks.
> 
> Thaths




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Re: Re: Problem waking Thinkpad G40 from S3 suspend to RAM

[Sudhakar Chandra]

Paul Ionescu wrote:
> I hope you tried with "acpi_sleep=s3_bios" not "acpi_mode=s3_bios" as you
> wrote.

Sorry.  I did try it with acpi_sleep=s3_bios. I made a mistake typing it 
in the email.  Does not work.

Thaths
-- 
Grandpa: "I'm an old man, no one listens to me."
Lisa:    "I'm a young girl, no one listens to me."
Homer:   "I'm a white male aged 18 to 49, everyone listens to me, no
          matter how dumb my suggestions are."
Slacker Without Borders                        http://openscroll.org/
Key fingerprint = 8A 84 2E 67 10 9A 64 03  24 38 B6 AB 1B 6E 8C E4


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Re: Problem waking Thinkpad G40 from S3 suspend to RAM

[Sebastian Henschel]

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hello Sudhakar..

* Sudhakar Chandra <thaths-Xioq7UEg2g9MLo7UitmB5A@public.gmane.org> [2004-10-18 09:14 +0200]:

> 2. I upgraded to the latest BIOS on IBM's support site. If this BIOS is 
> still broken, I guess I need to upgrade my DSDT table. Unfortunately, 
> the documentation I read refers me to an iasl compiler that I cannot 
> find at the indicated site:
> http://developer.intel.com/technology/iapc/acpi/downloads.htm

the compiler is included in the ACPI CA Unix Build environment (as it
is noted on that page in the section about Linux).

hth,
 Sebastian
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