Re: ACPI Suspend on Inspiron 1100

[Christopher Gahlon <lists-xMsVY1q4kzvQT0dZR+AlfA@public.gmane.org>]

On Thursday 31 March 2005 01:19 pm, ross-iWlVPHNiaoT2fBVCVOL8/A@public.gmane.org wrote:
> I have some questions on ACPI suspend on a Dell Inspiron 1100.  I have
> tried two different kernels: 2.6.8 (as comes with Debian sarge) and a
> 2.6.11.6 (which I built myself).  This is with BIOS A31.

I'm running the A31 Bios as well.  My fan actually shuts off once in a while 
now too! Woohoo!  Now if Dell would just address REAL problems...

> 1) 2.6.8: putting the machine to sleep via proc/sysfs works, but the
> laptop immediately wakes back up.  It looks almost like some device is
> not going to sleep, generating activity, and then causing a wakeup.

If you have USB drivers as modules, unload them and this should go away.  I 
had to with the 2.6.8 series and had to remove the monolithic USB drivers.
(I had to force module unloading, but i never had problems as a result)

> 2) 2.6.11.6: putting the machine to sleep via proc/sysfs works, but
> the machine never fully wakes up.  I can still login to a console and
> halt the laptop, but the display won't turn back on.  Switching
> to/from X11 VT doesn't seem to help.

I'm using a gentoo kernel: 2.6.11-gentoo-r2
Gentoo does patch their kernel, but I don't think they touch the ACPI code.  
I'm not 100% sure though...

I have S3 working on my Inspiron 1100 using vbetool and this script.
You have to do it from a text terminal.  Using it inside of X borks the system 
when you resume. (The usuall, keyboard/video don't work but you can ssh in 
and shut it down...)

I've found that the sleep commands are necessary.  I haven't experimented with 
shortening them.  YMMV.

#!/bin/bash
echo "Turning off display..."
vbetool dpms off
echo "Executing sleep command."
echo 3 > /proc/acpi/sleep
echo "Waiting 3 seconds before dpms on command."
sleep 3
echo "executing: vbetool dpms on"
vbetool dpms on
sleep 3
echo "executing: vbetool post"
vbetool post


-- 
Christopher Gahlon

"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
     -Benjamin Franklin, Historical Review of Pennsylvania.


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