Linux-Kernels 2.4.xx, apm & P4 issues

Linux-Kernels 2.4.xx, apm & P4 issues

[Andrej Ricnik]

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Hi Guys,

and my apologies for the general direction.

I have googled on this topic, asked on discussion boards
and couldn't find any suitable hints.

The problem that I encounter is happening on a mobile P4.
When apm is active (I've compiled it as a module in
both a 2.4.18 and 2.4.20 kernel) my system clock errs
by as much as 90 seconds in an hour. Also, I seem to
experience keyboard related problems (Ctrl, Alt, Shift get
*sticky* -excuse my wording, I can't think of a better 
description- that is, if I press them while typing normally,
even though they are released physically their functionality
carries on. Also the cursor keys sometimes issue numbers rather
than cursor-movement) when apm is running.

The machine in question is a IBM Thinkpad R32, mobile P4 1.8GHz,
512MB RAM.

I'm running Slackware Linux 8.1 with stock kernels.
Note that the identical setup worked flawless on my
previous notebook, a PII 266, same brand (TP770ED)
and that according to IBM (I sent the box in for service
because I couldn't test whether it works with XP because
I wiped it) the machine has no problems in Windows.

- -- 
Cheers,
Andrej Ricnik (programmer, fisheries acoustics)

P.S.: Please find attached output from my proc-filesystem
that might be relevant to the problem.



NIWA (National Institute of Water & Atmospheric Research Ltd)
PO Box 14 901, Kilbirnie, Wellington, New Zealand
Phone: ++64 4 386 0300
Fax: ++ 64 4 386 0574

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Disclaimer:
This, however, just expresses my personal opinion on that
topic and is not part of NIWA's policy :}
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Re: Linux-Kernels 2.4.xx, apm & P4 issues

[Pavel Machek]

Hi!

> and my apologies for the general direction.
> 
> I have googled on this topic, asked on discussion boards
> and couldn't find any suitable hints.
> 
> The problem that I encounter is happening on a mobile P4.
> When apm is active (I've compiled it as a module in
> both a 2.4.18 and 2.4.20 kernel) my system clock errs
> by as much as 90 seconds in an hour. Also, I seem to
> experience keyboard related problems (Ctrl, Alt, Shift get
> *sticky* -excuse my wording, I can't think of a better 
> description- that is, if I press them while typing normally,
> even though they are released physically their functionality
> carries on. Also the cursor keys sometimes issue numbers rather
> than cursor-movement) when apm is running.

> The machine in question is a IBM Thinkpad R32, mobile P4 1.8GHz,
> 512MB RAM.

Seems that crappy apm bios takes long to execute, and interrupts are
probably off during that. Try enabling interrupts during apm; try
acpi.

-- 
When do you have a heart between your knees?
[Johanka's followup: and *two* hearts?]