kern/121558: Supermicro X7SB4 Fatal trap 12 when ACPI disabled

[Leon Kos]

The following reply was made to PR kern/121558; it has been noted by GNATS.

From: "Leon Kos" <begunje at gmail.com>
To: bug-followup at freebsd.org
Cc: freebsd-acpi at freebsd.org
Subject: Re: kern/121558: Supermicro X7SB4 Fatal trap 12 when ACPI disabled
Date: Tue, 11 Mar 2008 15:48:52 +0100

 mptable output of the system is located at:
 http://www.lecad.uni-lj.si/~leon/other/x7sb4/mptable.txt
 
 I could not change version in BIOS. Processor option supported by BIOS are
 shown in http://www.lecad.uni-lj.si/~leon/other/x7sb4/img_1638.jpg
 
 I have added
 options     INVARIANTS
 options     INVARIANT_SUPPORT
 options     DIAGNOSTIC
 
 and now GENERIC shows the following trace when ACPI disabled:
 http://www.lecad.uni-lj.si/~leon/other/x7sb4/img_1639.jpg
 http://www.lecad.uni-lj.si/~leon/other/x7sb4/img_1640.jpg
 http://www.lecad.uni-lj.si/~leon/other/x7sb4/img_1641.jpg
 
 
 Forcing single core in BIOS helps when running ACPI disabled.
 Toggling other BIOS options like C1 Enhanced Mode or Speed Step
 does not.
 
 
 Kind regards!
 
 Leon Kos, CAD lab, Mech.Eng., University of Ljubljana, Slovenia
 (http://www.lecad.uni-lj.si/~leon)