On 08/05/2012 15:06, Anton Shterenlikht wrote:
Anyway, this was easier than I expected.
I removed a lot of dust from the fan
and the heat sink gills. I also replaced
the "thermal material".
I prop my mine up off the desk to get better airflow to the fan intake
which is on the underside. The fan slows down when I lift it up
indicating it is moving more air.
I rebuilt gcc47 and saw the highest temperature of 75.
This is on the southern side, so not too bad. The
noise reduced too.
Now, I'd just like to understand better the
meaning of these console messages:
May 8 15:00:08 mech-aslap239 kernel: acpi_tz0: _AC3: temperature 64.0>=
setpoint 40.0
May 8 15:00:08 mech-aslap239 kernel: acpi_tz0: _AC2: temperature 64.0>=
setpoint 50.0
May 8 15:00:18 mech-aslap239 kernel: acpi_tz0: _AC3: temperature 64.0>=
setpoint 40.0
May 8 15:00:18 mech-aslap239 kernel: acpi_tz0: _AC2: temperature 64.0>=
setpoint 50.0
May 8 15:00:28 mech-aslap239 kernel: acpi_tz0: _AC3: temperature 64.0>=
setpoint 40.0
May 8 15:00:28 mech-aslap239 kernel: acpi_tz0: _AC2: temperature 64.0>=
setpoint 50.0
May 8 15:00:38 mech-aslap239 kernel: acpi_tz0: _AC3: temperature 64.0>=
setpoint 40.0
May 8 15:00:38 mech-aslap239 kernel: acpi_tz0: _AC2: temperature 64.0>=
setpoint 50.0
May 8 15:00:48 mech-aslap239 kernel: acpi_tz0: _AC3: temperature 65.0>=
setpoint 40.0
May 8 15:00:48 mech-aslap239 kernel: acpi_tz0: _AC2: temperature 65.0>=
setpoint 50.0
Where are setpoints defined?
What's acpi_tz?
What are AC1, AC2, AC3?
Which kernel tunables are involved in the
switching from one fan speed to another
(assuming AC1, AC2, AC3 are related to fan
speed in some way)?
I had a quick look at ⌡aacpi(4),
but none of the above are mentioned.
Many thanks for all your help.
Google for "acpi_tz0: _CRT value is absurd, ignored" and you will find
a long thread with some hopefully useful pointers. You may need to bone
up on the ACPI reference and custom ASL's for FreeBSD. I've forgotten
most of it now but I think you will find references for both of them in
that thread.
Chris
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