From: Robert Vollmert <rvollmert-lists@gmx.net>
To: linux-kernel@vger.kernel.org
Subject: Local APIC with ACPI freezes ASUS M2400N
Date: Mon, 22 Sep 2003 17:55:24 +0200 [thread overview]
Message-ID: <20030922155524.GA8167@krikkit> (raw)
Hello,
when Local APIC is enabled, my ASUS M2400N notebook (Centrino / ICH4-M
chipset) freezes when ACPI initialises or tries to switch the display
device. When Local APIC is not enabled, this does not occur. This
happens both with 2.4.22 with ACPI patch from 20030916 and with
unpatched (apart from a patch to load the DSDT via initrd)
2.6.0-test5.
On 2.4.22, it is possible to avoid the freeze during boot-up by
disabling the vga console. I haven't tested this on 2.6.0-test5.
The freeze occurs when the DSDT writes to SystemIO address 0xb2. It
does this both to query information about the active display device
and to change the device.
I haven't been able to determine which of these writes exactly causes
the freeze. When booting successfully by modifying the DSDT to bypass
initialisation of the VGA device, it was possible to read the display
status successfully a few times before a read caused the system to
freeze.
If there's some more information you need, please let me know.
Cheers
Robert
next reply other threads:[~2003-09-22 15:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-09-22 15:55 Robert Vollmert [this message]
2003-09-24 12:36 ` Local APIC with ACPI freezes ASUS M2400N (update) Robert Vollmert
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=20030922155524.GA8167@krikkit \
--to=rvollmert-lists@gmx.net \
--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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox