dsdt.ASL for F80S help.

I am trying to edit fan speed for my Asus Laptop F80S. But i am unable to find a line that can be edited.

Attached is my dsdt.asl file... can anyone helps to improve my fan speed by increase it speed. (Renamed the attached file from txt --> asl)

 

Hello jackfood, I am doing the same, and have the same challenge as you have. Read read and again read the following pdf: http://www.acpi.info/DOWNLOADS/ACPIspec40.pdf

Hope you have succes

 

Look at the following code in your dsdt:

Code:

Method(RFAN, 0x1, NotSerialized)
        {
            If(\_SB_.PCI0.SBRG.EC0_.ECAV())
            {
                Store(\_SB_.PCI0.SBRG.EC0_.TACH(Arg0), Local0)
                Divide(Local0, 0x64, Local1, Local0)
                Add(Local0, One, Local0)
                If(LNot(LGreater(Local0, 0x3c)))
                {
                    Store(Local0, FANS)
                }
                Else
                {
                    Store(FANS, Local0)
                }
            }
            Else
            {
                Store(Zero, Local0)
            }
            Return(Local0)
        }

 

I would change it to this:

Code:

Method(RFAN, 0x1, NotSerialized)
        {
            If(\_SB_.PCI0.SBRG.EC0_.ECAV())
            {
                Store(\_SB_.PCI0.SBRG.EC0_.TACH(Arg0), Local0)
                Divide(Local0, 0x64, Local1, Local0)
                Add(Local0, One, Local0)
                If(LNot(LGreater(Local0, 0x3c)))
                {
                    Store(Local0, FANS)
                }
                Else
                {
                    Store(FANS, Local0)
                }
            }
            Else
            {
                Store(Zero, Local0)
            }
            Return([COLOR="Red"]FANS[/COLOR])
        }

Might not work. If you get a blue screen next time you boot, holt F8 and boot "last known good config".

 

@moral hazard: I have spend 4 or 5 hours to try to fix my noisy fan problem.

If you can, can you look at my DSDT file? I have included the original in the attachment.
PS: I have programming knowledge Delphi, PHP, C# at an average level, but this is complicated. I have figured out that there are no FAN devices, and one ThermalZone(THM0) and one TMP_ method. I am scared that there are no Zones for my CPU and GPU fans.

 

Yes your dsdt is not really good.

But you might be able to change this:

Code:

Method(_SCP, 0x1, NotSerialized)
            {
                Store(Arg0, Local0)
            }

Where SCP = set cooling policy.

The info on that is on P425 of the spec sheet.

Arg0 = An Integer containing the cooling mode policy code.
0 = Active, 1 = Passive

So if you want the fan to be quiet, I would change the code to this:

Code:

Method(_SCP, 0x1, NotSerialized)
            {
                Store(Arg0, 0x1)
            }

 

@Moralhazard, your suggested fix did not work. I hear no noticeable difference in fan speed. Do you have another suggestion in code?

 

Sorry I think I made a mistake last time.
It should be this:

Code:

Method(_SCP, 0x1, NotSerialized)
            {
                Store(Arg0, One)
            }

Or this could work:

Code:

Method(_SCP, 0x1, NotSerialized)
            {
                Return(One)
            }