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Bug#524643: marked as done (linux-2.6: enabling APIC on Asus M3A78 Pro motherboard causes disk i/o problems and corruption)

Your message dated Sun, 31 May 2009 23:07:50 +0100
with message-id <1243807670.14399.139.camel@deadeye>
and subject line Re: linux-2.6: enabling APIC on Asus M3A78 Pro motherboard causes disk i/o problems and corruption
has caused the Debian Bug report #524643,
regarding linux-2.6: enabling APIC on Asus M3A78 Pro motherboard causes disk i/o problems and corruption
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
524643: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=524643
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: linux-2.6
Severity: normal


I recently purchase a pc with a dual-core AMD64 cpu and Asus M3A78 Pro
motherboard.

I experienced very poor disk i/o performance and filesystem corruption when
I enabled the BIOS option ACPI APIC Support, to the extent that an ext3
filesystem had unrecoverable errors.

The BIOS manual describes the option: 

"ACPI APIC Support" When set to enabled, the ACPI APIC table pointer is 
included in the RSDT pointer list.

Since I've disabled "ACPI APIC Support" I have had no hard disk i/o problems,
but since the patch http://patchwork.kernel.org/patch/1473/ has been applied
to the kernel source, the kernel has disabled the use of the second CPU core.

I've backed out that patch and recompiled the kernel to make both CPU cores
available, but would rather a fix that doesn't require manually patching
the kernel source.

-- System Information:
Debian Release: squeeze/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.29 (SMP w/2 CPU cores; PREEMPT)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

--- End Message ---
--- Begin Message --- 
I seem to remember that we discussed this bug on IRC, but the
conclusions were not recorded here.  However, my understanding is that
these problems resulted from enabling APIC in the kernel while disabling
it in the BIOS.  This is considered to be misconfiguration and not a
kernel bug.

Ben.

-- 
Ben Hutchings
Logic doesn't apply to the real world. - Marvin Minsky

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