> I have exactly same motherboard with Phenom II X4. For me, it helps > when I disable acpi. ("boot -c" & "disable acpi" during the boot) > > OpenBSD 4.9-beta (GENERIC.MP) #780: Thu Jan 20 17:21:34 MST 2011 > t...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP > real mem = 3487105024 (3325MB) > avail mem = 3380256768 (3223MB) > mainbus0 at root > bios0 at mainbus0: SMBIOS rev. 2.5 @ 0x9f000 (68 entries) > bios0: vendor American Megatrends Inc. version "2103" date 06/18/2010 > bios0: ASUSTeK Computer INC. M4A785TD-V EVO > acpi at bios0 not configured > mpbios0 at bios0: Intel MP Specification 1.4 > ...
Trusting mpbios to be correct about your interrupt routing, on a machine built today? I doubt it.