linux-kernel - Laptop keyboard unusable when ACPI is active was Re: [2.6.22] i8042, ACPI, ipw2100 and issues reported by psmouse.c atkbd.c

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Message-ID: <470DD906.9090504@users.sourceforge.net>
Date:	Thu, 11 Oct 2007 10:04:22 +0200
From:	"legolas558@...rs.sourceforge.net" <legolas558@...rs.sourceforge.net>
To:	linux-kernel@...r.kernel.org
Subject: Laptop keyboard unusable when ACPI is active was Re: [2.6.22] i8042,
 ACPI, ipw2100 and issues reported by psmouse.c atkbd.c

legolas558@...rs.sourceforge.net ha scritto:
> Kernel: 2.6.22-r5
> Kernel option: i8042.nomux=1
I am now using kernel 2.6.22-r8 (Gentoo) and the following kernel options:

i8042.nomux=1 acpi=off

I have tried kernel 2.6.23-rc9 but the problem is still there.

> The problem which still remains, and I can't fix or work it around, is
> witnessed by the below dmesg lines:
> -----
> atkbd.c: Unknown key released (translated set 2, code 0xe0 on
> isa0060/serio0).
> atkbd.c: Use 'setkeycodes e060 <keycode>' to make it known.
> atkbd.c: Unknown key released (translated set 2, code 0xe0 on
> isa0060/serio0).
> atkbd.c: Use 'setkeycodes e060 <keycode>' to make it known.
> atkbd.c: Unknown key released (translated set 2, code 0xe0 on
> isa0060/serio0).
> atkbd.c: Use 'setkeycodes e060 <keycode>' to make it known.
> -----
> The release event for some keys is never caught, so all sorts of
> troubles happen if for example I use the Del key and it stucks, or if
> I use the Ctrl key and it never gets released...pushing again the
> stuck key brings back the key in the proper status.
With acpi=off the problem is totally worked around.

> Can somebody please give me some clues about this issue, and possible
> solutions? I have been searching the web for a couple of weeks and
> seems like it is a common trouble of notebook users, but nobody has
> yet published a solution.
I am trying to find a path myself in this issue - which dates back to at
least 2005 and has never been resolved.

I would now try some other kernel parameter in order to preserve ACPI
functionality and possibly prevent ACPI from messing up the keyboard IRQs.
Can somebody please give me istructions regarding the correct tests
(regarding kernel parameters and/or anything else) to perform in order
to better isolate the issue?

Related Gentoo bug tracker item:
http://bugs.gentoo.org/show_bug.cgi?id=194781

Other messages about the same kernel bug (many more can be found
googling around, and no solution yet):
https://lists.linux-foundation.org/pipermail/bugme-new/2005-January/011736.html
http://dev.laptop.org/ticket/2401

Regards,
--
  Daniele C.

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