no SMP without ACPI? (amd64)

[Ted Mittelstaedt]

> -----Original Message-----
> From: owner-freebsd-questions at freebsd.org
> [mailto:owner-freebsd-questions at freebsd.org]On Behalf Of Chad Leigh --
> Shire.Net LLC
> Sent: Tuesday, September 04, 2007 10:20 PM
> To: User Questions
> Subject: no SMP without ACPI? (amd64)
> 
> 
> Hi
> 
> I have a 6.2R system (amd64) with the latest patch level.
> 
> The motherboard is a Tyan S5197 i3110 based board with a Core 2 Quad  
> 2.4 ghz processor.  There is 4GB of memory and an Areca ARC-1231ML  
> raid card.
> 
> The problem is that I have to boot without ACPI or the system will  
> randomly reboot itself when doing something. It will sit idle for  
> ages but if I do a system build (make buildworld for example), it  
> usually will not make it through without rebooting.  If I boot  
> without ACPI support (#2 in the boot loader), then the system is  
> fine, I can do a billion builds without incident, except that I only  
> get 1 CPU.  (Yes, the kernel has SMP option built in).
> 
> I would really like to run with all 4 cores but cannot run with ACPI  
> at the moment due to instability.
> 
> Any suggestions?  Any way to get "old-style" SMP detection working  
> (ie, without ACPI)?
> 

Join the club - I think all of us with a lot of systems have a
few around in that same boat.  I know I do.

All I can say is fill out as detailed a PR as you possibly can
and hope for the best.  And don't forget to add screaming at Tyan
to the list - if these stupid motherboard manufacturers never
hear from us they don't pay attention to us.

You can also try changing BIOS versions, and dicking around with
BIOS settings, sometimes that helps.

Ted