on 01/11/2010 20:52 Joerg Traeger said the following:
> On Monday 01 November 2010, Andriy Gapon wrote:
>> on 01/11/2010 20:36 Joerg Traeger said the following:
>>> On Monday 01 November 2010, Andriy Gapon wrote:
>>>> It seems that your BIOS makes it a condition that OS supports the
>>>> following feature: ACPI_CAP_C1_IO_HALT.
>>>>
>>>> FreeBSD doesn't really support it, but you can try adding it to
>>>> 'features' variable in acpi_cpu_attach() in function in
>>>> sys/dev/acpica/acpi_cpu.c; look for the following line:
>>>> sc->cpu_features = ACPI_CAP_SMP_SAME | ACPI_CAP_SMP_SAME_C3;
>>>>
>>>> I don't think that should break anything for you, but may improve a
>>>> thing or two. I'd interested in seeing acpidump -d -t produced after the
>>>> patching.
>>>
>>> Hey, est seems to be happy now!
>>>
>>> coretemp0: <CPU On-Die Thermal Sensors> on cpu0
>>> est0: <Enhanced SpeedStep Frequency Control> on cpu0
>>> p4tcc0: <CPU Frequency Thermal Control> on cpu0
>>> coretemp1: <CPU On-Die Thermal Sensors> on cpu1
>>> est1: <Enhanced SpeedStep Frequency Control> on cpu1
>>> p4tcc1: <CPU Frequency Thermal Control> on cpu1
>>>
>>> Even C2 and C3 are anounced.
>>>
>>> dev.cpu.0.cx_supported: C1/20 C2/40 C3/60
>>> dev.cpu.0.cx_lowest: C3
>>> dev.cpu.0.cx_usage: 0.09% 2.48% 97.41% last 207us
>>>
>>> But the system behaves strange. The fan comes up 10 times a minute and
>>> for example "sh /etc/rc autoboot" runs 5 minutes now. Load is too high
>>> without any processes running. And rebooting takes a long time syncing
>>> buffers. Are these side effects known?
>>
>> Try to not use C3.
>>

Have you already tried this?
What are the results?

>>> acpidump output did not change.
>>
>> Are you 100% sure?
> 
> Yes.
> # diff acpidump.txt acpidump_acpi_patched.txt 
> 109c109
> <  * Disassembly of /tmp/acpidump.pdLAtj, Mon Nov  1 13:38:24 2010
> ---
>>  * Disassembly of /tmp/acpidump.DvGKfH, Mon Nov  1 19:12:53 2010
> 
> 
>> If yes, then could you please do the following?
>>
>> $ dd if=/dev/mem of=/tmp/ssdt.dump bs=1 skip=0xCBE61C18 count=0x02CC
> 
> This works.
> 
>> $ acpidump -d -f /tmp/ssdt.dump > /tmp/ssdt.asl
> 
> But:
> # acpidump -d -f /tmp/ssdt.dump > /tmp/ssdt.asl
> Segmentation fault: 11
> 
>> Send me /tmp/ssdt.asl :)

Can you please upload the binary file then?

-- 
Andriy Gapon
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