* Albatron PX845PE - can't turn fan off
@ 2005-04-26 5:20 Dave Royal
0 siblings, 0 replies; only message in thread
From: Dave Royal @ 2005-04-26 5:20 UTC (permalink / raw)
To: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f
Albatron PX845PE Pro II, Celeron 2.2, running Linux 2.6.8-24.14 (SuSE
9.2) ACPI release 20040715
Problem: The CPU fan is always on - doing echo -n 3 >
/proc/acpi/fan/FAN/state has no effect.
I have solved one problem with the DSDT: ACPI was seeing the wrong
temperature: using sensor 2 from the Winbond W83627hf rather than sensor
3. I have fixed that. ACPI now sees the correct CPU temperature (usually
< 30 C) and I can set the trip points. But fan state is always on.
Cooling mode is active. Fan speed is correct.
I wonder whether (a) there is code missing in the DSDT or (b) ACPI is
being overridden by the BIOS. What code should be present in the DSDT
for fan control to work? The only method apparent under Device (FAN)is
_INI.
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