Various problems, atapi, acpi (S3), cpufreq (est)

Eygene Ryabinkin rea-fbsd at
Wed May 20 10:51:50 UTC 2009


Wed, May 20, 2009 at 12:28:45PM +0200, Harald Schmalzbauer wrote:
> Eygene Ryabinkin schrieb am 20.05.2009 11:28 (localtime):
> > Harald, good day.
> ...
> > Could you, please, provide the output from 'acpidump -dt | grep -i cpu |
> > grep -i alias' and your MB model.  This may not help to decrease power
> Thanks for your answer and a good da also, Eygene.

No problems ;))

> Here's the reqested output, only without alias greped. Since I found a
> BIOS updates I also get est0, but like you correctly assumed with
> "attach returned 6".
> acpidump -dt | grep -i cpu

No aliases.  Pity, then the mentioned PR won't be able to help you.
I could try to glance over the est attach issue if you'll post full
dmesg, 'acpidump -dt', 'sysctl dev.cpu', 'sysctl dev.est' and 'sysctl

Regarding the original problem about increased power consumption: you
seem to have desktop CPU with only one SpeedStep frequency, but with TCC
cycle throttling.  This can be easily verified: you should see only one
frequency in dev.est.0.freq_settings, but multiple (8, with stepping of
12.5%) frequencies in dev.cpu.0.freq_levels.  Throttling is known not to
decrease power consumption and your increase of 1W can be attributes as
a measurment error (can't say for sure -- statistics and knowledge on
how you had measured the consumption is needed).

There is good set of notes from Alexander Motin on the power consumption
perhaps this will give you some further ideas.

> The motherboard is a GigaByte P35DS4

And you're running the latest known BIOS, aren't you?

> I already used cd1 as device, hence the atapicam device. Fortunately I 
> need the ODD really seldom, but for the last two years I had to boot 
> another software because none of my drives worked. Am I the only one 
> with that massive problems? Could the AHCI mode be the culprit?

Once I had similar messages with AHCI mode turned on some Asus MBs, so I
am turning it off regularily.  You can also try just enhanced SATA mode
set via BIOS -- it could help.
 _                ___       _.--.   #
 \`.|\..----...-'`   `-._.-'_.-'`   #  Remember that it is hard
 /  ' `         ,       __.--'      #  to read the on-line manual
 )/' _/     \   `-_,   /            #  while single-stepping the kernel.
 `-'" `"\_  ,_.-;_.-\_ ',  fsc/as   #
     _.-'_./   {_.'   ; /           #    -- FreeBSD Developers handbook
    {_.-``-'         {_/            #

More information about the freebsd-current mailing list