From: Dave Jones <davej@codemonkey.org.uk>
To: Alex Bennee <alex@braddahead.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Ctrl-Alt-Backspace kills machine not X. ACPI?
Date: Wed, 4 Dec 2002 14:33:37 +0000 [thread overview]
Message-ID: <20021204143337.GK647@suse.de> (raw)
In-Reply-To: <1039012040.2588.20.camel@cambridge.braddahead>
On Wed, Dec 04, 2002 at 02:27:19PM +0000, Alex Bennee wrote:
> I was under the impression that once Linux took over from the BIOS it
> had complete control of the system, including the interrupt/exception
> table. I am assuming some sort of interrupt or exception must be being
> generated by this keypress that runs some BIOS code.
It's likely an SMM event, which Linux doesn't even get to see.
The BIOS handles it appropriately. The chipset has a bit you can
flip to disable this 'feature', but there was a caveat iirc, something
like 'it turns itself back on every so often'. I'll let Egbert say
more about it, as he had the relevant datasheet.
Dave
--
| Dave Jones. http://www.codemonkey.org.uk
| SuSE Labs
next prev parent reply other threads:[~2002-12-04 14:28 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-04 12:45 Ctrl-Alt-Backspace kills machine not X. ACPI? Alex Bennee
2002-12-04 13:15 ` Dave Jones
2002-12-04 13:59 ` John Bradford
2002-12-04 14:27 ` Alex Bennee
2002-12-04 14:33 ` Dave Jones [this message]
2002-12-04 14:47 ` Michael Abshoff
2002-12-04 15:08 ` Alex Bennee
[not found] ` <3DEDF74D.2090204@enib.fr>
[not found] ` <1039007556.2217.30.camel@cambridge.braddahead>
2002-12-04 18:35 ` XI
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20021204143337.GK647@suse.de \
--to=davej@codemonkey.org.uk \
--cc=alex@braddahead.com \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.