Re: How to debug (not working)S3?

Re: How to debug (not working)S3?

[Stefan Schweizer]

 "gruetzner [at] gmx.de" <gruetzner [at] gmx.de> wrote
> I use a FSC Lifebook E2010 and I'd like to get acpi suspend to ram working.
> The notebook seems to suspend properly but it doesn't come up anymore after
> I press the power button while in suspend(I use kernel 2.6.7). With a
> minimalistic kernel(no console-framebuffer, almost no hardware support(usb,
> sound, etc.))
this should be no hardware support, make everything as module and make
sure no module is loaded when you try
> and with suspending out of X11 I could manage it to resume one
> time. That's why I guess the video doesn't wake up proberly(radeon 340M IGP).
Does it have an agp-driver? My intel-agp never survives resume

> How can I find out, what exactly causes the hang during resume? I cannot acces
> the notebook via network - could a serial console work?
You should be able to type afterwards and to do some cpu or
hd-intensive commands and hear the activity ..
If you are at this stage you know that you can resume, and you can
proceed to some tricks to get your video back, if not you can try
again with pci=noacpi.
Perhabs do a cat /proc/interrupts to see the bad drivers.

Stefan


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How to debug (not working)S3?

[Gruetzner-Mmb7MZpHnFY]

Hello,

I use a FSC Lifebook E2010 and I'd like to get acpi suspend to ram working.
The notebook seems to suspend properly but it doesn't come up anymore after
I press the power button while in suspend(I use kernel 2.6.7). With a 
minimalistic kernel(no console-framebuffer, almost no hardware support(usb, 
sound, etc.)) and with suspending out of X11 I could manage it to resume one
time. That's why I guess the video doesn't wake up proberly(radeon 340M IGP).

How can I find out, what exactly causes the hang during resume? I cannot acces
the notebook via network - could a serial console work?

Thank you in advance for any hints!

MfG
Michael


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How to debug not working S3?

[Malte Doersam]

Hi everybody,

I'm curious how you get some usefull information on which point the resume 
might fail.  I'm just trying 2.6-test0 with ACPI revision 20030714 and S1 
works quite fine, but S3 is nasty.

Computer: Thinkpad R31 i810 laptop

if I echo 3 to /proc/acpi/sleep all the processes are moved to the 
refrigerator and the laptop turns itself off. Invoking any acpi-event makes 
the Thinkpad waking up, I hear the harddrive spinning up for like a second 
and then turning off again. After this, the system is kinda dead and must be 
turned off the hard way. (pressing the power button for 4 seconds).

I'd like to gather some information on the problem, which prevents resuming. 
Any hint/note on how to do this?

cheers Malte

P.S. there is a bug on bugzilla filed in the category 'input devices' but is 
probably acpi related: http://bugzilla.kernel.org/show_bug.cgi?id=804



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Re: How to debug not working S3?

[Ole Myren Rohne]

If you have a parallel port, make a dongle with eight LEDs and trace
your way with OUTB until it hangs. 
If you don't have a parallel port, insert calls to machine_restart in
critical places and see if you ever get there.

In general, you want to get rid of any non-essential gadgets and their
drivers (usb, cdrom etc). If your screen is black on resume, you want
to check out the s3_bios and s3_mode options, or you might have to
resort to POSTing the video adapter from X.

This roadmap to get S3 working might be of help. It is for a
completely different machine, but starting with more-or-less the same
symptoms as you:

<http://mrohne.home.cern.ch/mrohne/P2120/P2120_Linux_S3.html>

Good luck, Ole


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