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From: Jung-uk Kim <jkim@FreeBSD.org>
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Date: Fri, 12 Dec 2008 16:26:54 -0500
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Cc: cpghost <cpghost@cordula.ws>
Subject: Re: 7.1-PRERELEASE: asus M3A / Phenom X4 / powerd freeze
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On Friday 12 December 2008 03:36 pm, Arno J. Klaassen wrote:
> cpghost <cpghost@cordula.ws> writes:
> > On Fri, Dec 12, 2008 at 12:01:29AM +0100, Arno J. Klaassen wrote:
> > > yet another powerd SOS : on an ASUS M3A78-EM MB with
> > > Phenom 9750 and 8 gig memory, starting powerd freezes
> > > the box after slowing down a bit cpu frequency.
> >
> > (... snip ...)
> >
> > > dev.cpu.0.freq_levels: 2398/-1 2098/-1 1798/-1 1498/-1 1199/-1
> > > 899/-1 599/-1 299/-1
> > >
> > > further :
> > >
> > >  - I set debug.cpufreq.lowest superior to 1500 : system remains
> > >    up but only when pushing really slightly
> > >
> > >  -  I set debug.cpufreq.lowest inferior to 1100 : freeze
> > >     garantueed
> >
> > Same here. Running with
> >   debug.cpufreq.lowest="1240"
> > in /boot/loader.conf to prevent freezes.
> >
> > This is a FreeBSD 7.1-PRERELEASE #0: Sat Nov  8 14:18:05 CET 2008
> >   root@textbox:/usr/obj/usr/src/sys/GENERIC
> > running in amd64 and i386 mode with ACPI enabled (default):
> >
> > CPU: AMD Phenom(tm) 9350e Quad-Core Processor (2000.08-MHz
> > K8-class CPU) Origin = "AuthenticAMD"  Id = 0x100f23  Stepping =
> > 3
> >  
> > Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,M
> >TRR, PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT>
> > Features2=0x802009<SSE3,MON,CX16,<b23>>
> >   AMD
> > Features=0xee500800<SYSCALL,NX,MMX+,FFXSR,Page1GB,RDTSCP,LM,
> > 3DNow!+,3DNow!>
> >   AMD Features2=0x7ff<LAHF,CMP,SVM,ExtAPIC,CR8,<b5>,<b6>,<b7>,
> >                       Prefetch,<b9>,<b10>>
> >   Cores per package: 4
> >
> > using an MSI board with SB600 chipset and newest BIOS.
> >
> > No idea why the system freezes below approx 1200 MHz. But
> > apparently, this bug is quite common and affects a lot of systems
> > with Phenoms. :(
>
> do Phenoms not support powernow?

[SNIP]

"Phenom" is 10H family processor and it has Cool`n'Quiet 2.0.  Someone 
wrote a driver for it and it was posted on freebsd-current in 
September:

http://lists.freebsd.org/pipermail/freebsd-current/2008-September/088330.html
http://lists.freebsd.org/pipermail/freebsd-current/2008-September/088803.html
http://lists.freebsd.org/pipermail/freebsd-current/2008-September/088806.html

Jung-uk Kim