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Message-ID: <AANLkTi=0nGnr9Hp9RuXpRJjCvoHxK-DsYgK3AWa3Rr5w@mail.gmail.com>
Date: Fri, 31 Dec 2010 14:10:48 -0800
From: Avery Pennarun <apenwarr@...mnit.ca>
To: yotam.medini@...il.com
Cc: Randy Dunlap <rdunlap@...otime.net>, linux-kernel@...r.kernel.org
Subject: Re: APM_CONFIG on x86 - Is it possible?
On Fri, Dec 31, 2010 at 2:05 PM, Yotam Medini <yotam.medini@...il.com> wrote:
> On Fri, 31 Dec 2010 13:54:59 -0800
> Avery Pennarun <apenwarr@...mnit.ca> wrote:
>> > I do get:
>> >
>> > $ sudo modprobe apm
>> > FATAL: Error inserting apm
>> > (/lib/modules/2.6.32.yumax/kernel/arch/x86/kernel/apm.ko): No such device
>>
>> The output of 'dmesg' might be revealing here. However, it's likely
>> that your PC doesn't actually support APM unless it's *very* old. You
>> might want to try ACPI instead.
>
> Indeed:
> $ dmesg | grep -i apm
> [ 52.897795] apm: BIOS not found.
> I will try to investigate this.
>
> But I clearly remember that a few years ago, I could issue:
> $ cat /proc/apm
> and see the battery status.
> Then, I believe, the kernel tree used to have arch/i386.
arch/i386 is named arch/x86 nowadays.
It might be interesting to try an older kernel and see if you get
different results. Since APM is so rare nowadays, I wouldn't be
surprised to find out that the kernel has accumulated some bugs there
in the intervening years.
Avery
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