i dont have an option for that

It is bizarre that you can't access the BIOS and turn on ACPI. What you posted indicates that ACPI is not running; the other possibilities are that the bios has APM instead or that Sony has proprietary software for controlling the fan.

It is also possible that acpi is simply disabled in the kernel by default.
Here are 2 different things to try:

1. Boot the kernel with the extra paramater: acpi=on

2. Boot with the extra parameter: apm=on -- then, install 'apmd'

i tryed with acpi=on


here is the result

http://paste.org/index.php?id=3015

here is the result with apm=on

http://paste.org/index.php?id=3020

apm --verbose gives me
No APM support in kernel

modprobe apm gives
FATAL: Error inserting apm (/lib/modules/2.6.24-16-generic/kernel/arch/x86/kernel/apm.ko): No such device

/etc/init.d/powersaved start
* Starting power management daemon powersaved FATAL: Error inserting speedstep_centrino (/lib/modules/2.6.24-16-generic/kernel/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.ko): No such device

OK, so your post about ACPI shows that it's up and running (when you supply acpi=on). The only other thing you can do (after switching it on) is to play around to see what ACPI functions are supported. Not all hardware of that vintage had a control of the fan speed - does your fan have at least 3 wires on it? If it's only 2 wires, it's not a speed-controllable type. So stick to the 'acpi=on' stuff and play around.

The apm results suggest that APM isn't supported at all on your machine. Ignore the "speedstep" stuff; most CPUs that vintage had no speed control (except for the rare hardware switches to control a clock).

problem solved by following instructions from here

http://ubuntuforums.org/showthread.php?t=607614

and crucial was this

http://ubuntuforums.org/showpost.php...5&postcount=17

this seems like an odd setup, most variable speed fans i've come across, connect into the motherboard and are controlled by a temperature algorithm in the bios, there's generally a setting in the bios to determine the max temperature to let a certain sensor get to before the fan comes in