Problem waking Thinkpad G40 from S3 suspend to RAM

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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Hi,

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

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

Thaths

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hello Sudhakar..

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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