Mailinglist Archive: opensuse (1750 mails)

["David C. Rankin" <drankinatty@xxxxxxxxxxxxxxxxxx>]

Bartek Waclawik wrote:
> Hi everyone.
>
> I have laptop HP nx9420 with Suse 11 on it, and I have a problem with
> ACPI. ACPI showes temperatures of CPU too high. In fact the cooler works
> so loud.
> What I must do to solve this problem. Is there a specific kernel module?
> Please help....
>
> Regards from Poland, Barth.

Bartek

        Are you 100% certain that the problem is ACPI and not a heat issue? 
None of
the fans partially blocked with lint, etc. On today's laptops if the cooling is
in any way compromised, your laptop will sound like it is about to launch into
vertical flight at any moment. If you have all the fans and cooling fins, etc.
clean, then it is time to investigate ACPI.

        One test, if the machine is dual-boot is to also test in windows and 
see how
the fans behave. If you are fine in windows, then it is definitely ACPI.
Complicating matters is the different instrumentation and chipsets that can
even be on the _same_ model laptop. Googling will get you many places to start.

        Additionally, there are good howtos on scaling processor clock speed to 
test
fan speed is also a good line of threads to look at.

Here are a few to get your started:

http://www.google.com/search?q=opensuse+acpi+laptop&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a

        First link is opensuse acip and HP

http://www.google.com/search?q=linux+hp+laptop+fan+speed++acpi&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a

        The first 3 links on the 1st page all deal with HP acpi fan speed 
issues on Linux.

http://www.google.com/search?q=linux+hp+laptop+fan+speed+&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a

        Next, look down through /proc/acpi...

here is a little script that will help:

#!/bin/bash
NUMCORES=2
let COREINDEX=$NUMCORES-1
for i in $(seq 0 $COREINDEX); do
        echo -e "cpu${i}-power $(cat /proc/acpi/processor/CPU${i}/power)\n"
        echo -e "cpu${i}-limit $(cat /proc/acpi/processor/CPU${i}/limit)\n"
        echo -e "cpu${i}-throttling $(cat 
/proc/acpi/processor/CPU${i}/throttling)\n"
        echo -e "cpu${i}-info $(cat /proc/acpi/processor/CPU${i}/info)\n"
done


-- 
David C. Rankin, J.D., P.E.
Rankin Law Firm, PLLC
510 Ochiltree Street
Nacogdoches, Texas 75961
Telephone: (936) 715-9333
Facsimile: (936) 715-9339
www.rankinlawfirm.com
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