Re: ACPI S3 resume only reboots

[Nate Lawson <nate-Y6VGUYTwhu0@public.gmane.org>]

Alberto wrote:
>>On Sat, Oct 09, 2004 at 03:06:28PM +0200, Pavel Machek wrote:
>>
>>>>How could i try to debug this to give you more info?
>>>
>>>You basically need to fix this yourself. Add infinite loops to
>>>wakeup.S to see where it breaks.
> 
> I isolated the line were it breaks and reboots.
> 
> Code from arch/i386/kernel/acpi/wakeup.S
> 
> [...] 
> 	# setup data segment
> 	movw	%cs, %ax
> 	movw	%ax, %ds					# Make ds:0 point to wakeup_start
> 	movw	%ax, %ss
> 	mov	$(wakeup_stack - wakeup_code), %sp		# Private stack is needed for ASUS board
> 	movw	$0x0e00 + 'S', %fs:(0x12)
> 
> 	pushl	$0		###THIS LINE CAUSES REBOOT###			# Kill any dangerous flags
> 	popfl

Hehe.  Look up above where the stack pointer is changed to point to the 
wakeup stack and then 0 is pushed on it.  It's likely there is some 
problem with the config or location of the wakeup stack.

-- 
Nate


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