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DSDT SpeedStep on acer 5135

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Hi!


I'm using linux on a old Arcer Aspire 5315. I replaced sometime ago the original CPU by a T8100

I know that this forum not is focused on linux, but is the best resource that I know about DSDT modifications.


This is my current DSDT


The computer works fine but the are some issues that maybe I can fix with a proper DSDT


The CPU is working at 2 Ghz but should be 2.1 Ghz

It's a BIOS limitation that I need to fix

root@antiX1:/home/Carlos/Bios# cat /sys/devices/system/cpu/cpu0/cpufreq/bios_limit
2001000

I found this during boot

[ 2.218733] [Firmware Bug]: ACPI: Invalid BIOS _PSS frequency found for processor 0: 0x0 MHz

[ 2.218904] [Firmware Bug]: ACPI: Invalid BIOS _PSS frequency found for processor 1: 0x0 MHz


I suppose that is due my DSDT

 

    
Scope (_PR)
   {
       Processor (CPU0, 0x01, 0x00000410, 0x06) {}
       Processor (CPU1, 0x02, 0x00000410, 0x06) {}
   }

 

In a correct system the CPU should work from 800 MHz to 2.10 GHz


I'm confused about how populate that section... looks like I need to put the values for my current CPU (T8100) but...

-BIOS is supposed to works with a full range of CPUs, why I need to put my current one a not something valid for a entire family of CPUs?


In any case... i have found come calculators to generate the section but all are for Mac SO.

There is some SpeedStep calculator that works on windows/Linux? if not... how can I calculate the correct values?

Edited by Guest
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hello


in mac os x is the boot loader .. will go generate the states..


in linux no clue..


if it have same behavior in windows .. maybe something is wrong with ur bios

PB Easy Note TM 86 - i5 430 M - H55M - Ram - 6 GB - Alc272 - Radeon HD 5470 512 QE/CI

Lenovo G500 - i5 3230m - HM77 - Ram - 8 GB - Conexant audio - HD 4000

My OS X Files 

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