From: Andries.Brouwer@cwi.nl
To: linux-kernel@vger.kernel.org, sfr@gmx.net
Subject: Re: Timeout: AT keyboard not present?
Date: Wed, 3 Jan 2001 15:32:38 +0100 (MET) [thread overview]
Message-ID: <UTC200101031432.PAA136866.aeb@texel.cwi.nl> (raw)
Jan 2 21:20:33 asterix kernel: keyboard: unknown scancode e0 12
Jan 2 21:20:33 asterix kernel: keyboard: unknown scancode e0 71
Jan 2 21:20:33 asterix kernel: keyboard: unknown scancode e0 70
Jan 2 21:20:33 asterix kernel: keyboard: unrecognized scancode (71) - ignored
Jan 2 21:20:33 asterix kernel: keyboard: unknown scancode e0 70
Jan 2 21:20:34 asterix kernel: keyboard: unrecognized scancode (70) - ignored
Jan 2 21:20:47 asterix last message repeated 13 times
This sounds very much as if you got your keyboard into scancode mode 1.
(Ordinarily a key-up event gets scancode of key-down but with
high-order bit set. In scancode set 1, a key-up event get the
scancode of key-down prefixed by 0xf0. Since the high-order bit
is masked here, this 0xf0 would show up as 0x70.
Moreover, the key-up for a sequence like e0 71 is e0 f0 71,
again what you see here.)
How you got into scancode mode 1 I don't know
(maybe by sending the command f0 01 to the keyboard).
Do things improve if you rip this strange messy AUX_RECONNECT
stuff out of drivers/char/pc_keyb.c?
Andries
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next reply other threads:[~2001-01-03 15:03 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-03 14:32 Andries.Brouwer [this message]
2001-01-03 14:39 ` Jan-Benedict Glaw
2001-01-03 14:49 ` Alan Cox
2001-01-03 15:39 ` Maciej W. Rozycki
-- strict thread matches above, loose matches on Subject: below --
2001-01-03 17:19 Andries.Brouwer
2000-12-30 12:03 Jesús Carrete Montaña
2001-01-02 22:22 ` Stefan Frank
2001-01-03 9:33 ` Tim Waugh
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