AMD64 Cool'n'quiet overheating.

[Marcin Koziej]

Thank You for Your replies :)

> Maybe you forgot to enable powerd(8) at boot-time?
> 
> Something like this:
> powerd_enable="YES"
> into your /etc/rc.conf
I didn't :)
Actually I have read all the documentation / relevant google groups 
threads i could find befor mailing freebsd-acpi at .

> BTW Umemoto-san already merged his work on passive cooling into both
> RELENG_6 and HEAD, so you don't have to patch anymore.

I missed that, true, now i run not patched STABLE. However, my problems 
remain:

1. With cpufreq framework, I tried powernow module (with powerd of 
course). Problems:
    a) sometimes powerd 'misses' the temperature jumping from somewhere 
near _PSV to over _CRT resulting in system shutdown.
      - I tried to change the interval time but it didn't help much, 
I'll try to check it better though.
      - I tried to lower the _PSV value somehow, but I cannot -- either 
with sysctl or asl acpi tweaking.
      - I tried to set ACx levels to better cool my cpu, but failed to 
set them (they are all set to -1 and no mention of them in the acpi asl)

    b) when the system is idle, and the temp is about 47-55 degrees 
Celsius, the acpi_ppc module seemed quieter (it turned off completely i 
guess). powernow modules is running fan at lowest, but still audible and 
quite distracting level

2. With acpi_ppc, the cooling is well driven, but acpi_ppc does not 
throttle cpu when _PSV is hit resulting in _CRT shutdown.
      - I think acpi_cnq (as acpi_ppc to cpufreq port) would join 
acpi_ppc's fan-driving and cpufreq passive cooling, but It panics on 
kldload (a bad free).
      - Is acpi_cnq integrated obsoleted by powernow module?

Reminder:
  CPU: AMD Athlon(tm) 64 Processor 3700+ (2401.37-MHz 686-class CPU)
   Origin = "AuthenticAMD"  Id = 0xf4a  Stepping = 10 
Features=0x78bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2>
   AMD Features=0xe0500800<SYSCALL,NX,MMX+,LM,3DNow+,3DNow>


Thanks for support,

m.