Rluggers,

I finally decided to remove Windows XP from my Compaq Evo N600c laptop
and install Gentoo 1.4_r4.

After installing from stage3, I began to compile X11 from portage. The
problem is, the fan failed to turn on, causing the laptop to shut off
from heat stroke.

Upon further inspection, the ACPI code in the gentoo stock kernel
(2.4.20) is 6 months old and doesn't have a proc entry for ./acpi/fan/*.
I switched to the development kernel for fun (2.5.72) and ACPI worked
almost like a dream. The catch was that none of the wireless modules for
my prism2_usb onboard card are supported in the 2.5.x kernel, so I had
to downgrade.

Now I am running 2.4.21-ac4, and ACPI appears to be working. The problem
is that when I do a "echo "on" > /proc/acpi/fan/C1F6/state", the fan
turns on, but doing the same with an "echo off" results in the fan
staying on.

Anyone played with ACPI enough to give me some hints? A lot of the
directories in /proc/acpi/ seem to be empty, such as ./processor and
./thermal_zone. I can only assume this means that I don't have support
for my onboard thermometer so the fan will turn on when things get hot.

ACPI support is compiled statically.

Mark

P.S. Freebsd 5.1 runs terribly on this laptop, as APCI doesn't work, and
APM causes all sorts of problems. Openbsd 3.3 with APM seems to work
okay, but it doesn't support my onboard prism_usb wireless card, nor
does it have the 54G support that Freebsd and Linux have (which I still
haven't gotten working).

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