Re: shutdown with toshiba portege

Le Fri, 28 Sep 2012 16:23:55 +0300
Dan Carpenter [off-list ref] a écrit:

quoted

So your Toshiba is going into suspend instead of power off...

There are several ways that computers shutdown but modern systems
use ACPI.  It could be that the 2.6.37-486-PAE was using a
different method.  I've CC'd the ACPI list.

Thinks, first I have open a bug 
https://bugzilla.kernel.org/show_bug.cgi?id=47811
the I have compiled a 3.5.4 with some printk around the halt/poweroff. (FIles
arch/x86/kernel/reboot.c
arch/x86/kernel/apm32.c ) trying to trace call BIOS but nothing printk,
either I do not understand the power off mechanism, or the computer is in a
state where printk do not appear on screen.
In fact I don't know what I can do to find an issue to this bug.

Thanks for your answer

Just to say that the cause of battery to drain is making

hwclock --systohc 

just before halt computer. Add 
HWCLOCKACCESS=no
or remove calls to hwclock --systohc
in /etc/init.d/«scripts» in «stop» part removes the bug.

So I think it's not a bug of ACPI but a bug of the RTC standard in the kernel
(file arch/x86/kernel/rtc.c). I tried to add a «sleep 1» just after the
hwclock call but no change.

This is a workaround but not the real solution of this problem.
Thanks for reading.
François Boisson
(Please Cc to me, I'm not on linux-acpi list)

François Boisson
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