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Intel Enanched Speedstep support.
I just installed NetBSD 5.0 (i386) on Packard Bell BV IMEDIA MC 9611. I'm
finally happy with my box; it was a long time I didn't run NetBSD on my primary
desktop machine and I always felt that something was not at the right place
with GNU/Linux and FreeBSD. Now I'm happy, again.
Only two problems are getting me frustrated: the audio which doesn't works due
to a problem between my azalia(4) soundcard and the noapic support (indeed the
audio works properly when ACPI is disabled - I'll likely open a thread ad-hoc
for this problem), and the Speedstep support. It would be nice to also solve
the first problem but ATM I found the second one much more important. That's
why I'm forced to hair a nasty buzzing from the CPU fan which rotates at a
crazy speed. I can't tell you the exact RPM since, to be honest, I don't have
idea of what it is.
I tried to slow down the CPU speed by setting the frequency via sysctl(8) but
it seems I have no "machdep.est" options available:
sysctl: second level name 'est' in 'machdep.est' is invalid
Nor I have any option about Speedstep support or others options discussed into
the CPU frequency scaling article of the wiki. The dmesg(8) output also
don't say nothing about such feature. Due to this lack I discarded the idea to
install sysutils/estd to do some test, since I guess it won't works at all.
I also tried to disable a core via cpuctl(8) in order to slightly decrement the
CPU temperature but it's still higher than 50 grades and the fan speed still is
Current CritMax CritMin CritCap Unit
temperature: 40.000 degC
cpu0 temperature: 58.000 degC
cpu1 temperature: 59.000 degC
FWIW here is the output of cpuctl (command "identify") to the core 0:
cpu0: Intel Core 2 (Merom) (686-class), 1862.14 MHz, id 0x6f6
cpu0: features 0xbfebfbff<PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX>
cpu0: features 0xbfebfbff<FXSR,SSE,SSE2,SS,HTT,TM,SBF>
cpu0: features3 0x20100000<XD,EM64T>
cpu0: "Intel(R) Core(TM)2 CPU 6300 @ 1.86GHz"
cpu0: I-cache 32KB 64B/line 8-way, D-cache 32KB 64B/line 8-way
cpu0: L2 cache 2MB 64B/line 8-way
cpu0: ITLB 128 4KB entries 4-way
cpu0: DTLB 256 4KB entries 4-way, 32 4MB entries 4-way
cpu0: Initial APIC ID 0
cpu0: Cluster/Package ID 0
cpu0: Core ID 0
cpu0: family 06 model 0f extfamily 00 extmodel 00
...and the relevant output of dmesg:
cpu0 at mainbus0 apid 0: Intel 686-class, 1862MHz, id 0x6f6
cpu1 at mainbus0 apid 1: Intel 686-class, 1862MHz, id 0x6f6
Useless to say that my CPU *have* the Enhanced Intel Speedstep Technology.
Just I'm not able to make it works, yet. I tried to found informations on
Google, mailing lists and asked on IRCnet but without any results. This is my
last resource. Hope someone can point me to the right URI/document/man page.
Thanks in advance for your help and time!
Claudio M. Alessi
JID: smoppy AT gmail.com
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