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Date: Fri, 2 Feb 2001 08:11:53 +0100
From: Stefan Frank <sfr@gmx.net>
To: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: Keyboard Scancode Problems
Message-ID: <20010202081153.A460@obelix.gallien.de>
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In-Reply-To: <3A78AFAF.82FCB4F2@Hell.WH8.TU-Dresden.De>; from sorisor@Hell.WH8.TU-Dresden.De on Thu, Feb 01, 2001 at 01:37:03AM +0100
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Hi Udo!

On Thu, 01 Feb 2001, Udo A. Steinberg wrote:

> 
> Hi all,
> 
> With all the latest kernels (at least since 2.4.0-test12)
> I have had occasional problems with a PS/2 keyboard when
> switching back and forth between X and text consoles.
> 
> In most cases the problem occurs when switching from X to
> a text console, which renders the keyboard totally unusable.
> Pressing any key results in ^W ^E and other garbage.
> Sometimes pressing Ctrl fixes the problem, other times not
> even SysRq works.
> 
> The kernel logs the following stuff:
> 
> keyboard: unrecognized scancode (70) - ignored
> keyboard: unrecognized scancode (66) - ignored
> keyboard: unknown scancode e0 71
> keyboard: unknown scancode e0 70
> 
> and so forth. I cannot reliably reproduce it though.
> 
> Can someone enlighten me whether this is a keyboard problem,
> X problem or something wrong with the kernel's console stuff?
> 

I had the same problem when upgrading from 2.4.0-test10 to 2.4.0,
altough my keyboard worked for about half a year without problems. 
But, what a coincidence, it turned out to be a hardware problem. Two pins
of the PS/2 connector were moved inside the connector, thus they didn't
connect to the keyboard controller. I replaced the keyboard cable and
all is well. Did you try to replace the keyboard ?

Regards, Stefan


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