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