Sony VAIO SZ5MN - unable to power off using ACPI

[Marcin Cieslak]

Hello,

I have kinda got used to the fact that recent VAIOs are unable to go to 
S3 sleep properly. However I've found strange with my new one - going to 
S5 does not work properly. Instead of powering off, LEDs stay on, one 
can hear CPU fan louder, and only screen turns itself off, however I 
could still glimpse "Entering sleep state [S5]" message from 
/sys/contrib/dev/acpica/hwsleep.c:432

OS: FreeBSD 7.0-BETA3 amd64, tried both original and 20071114 code.

i386 kernel had the same problem.

Dump of ACPI tables:

http://akson.sgh.waw.pl/~saper/FreeBSD/acpi/sony.asl

The strange thing about this machine is that it has two graphic cards on 
board selected using a special switch that works only at system boot.
In "speed" position NVidia GeForce 7400 card is used, in "stamina" 
position standard Intel 950 from the chipset. If in "stamina" mode, 
NVidia card disappears from PCI device listing completely. (This does 
not happen after the system is running - only you can tell from 
different pciconf outputs after reboot).

Any ideas how to proceed with debugging?

--Marcin