SMP only detects one CPU - help?

[Adam J Richardson]

> Message: 11 Date: Fri, 20 Apr 2007 09:58:32 -0700 From: Chuck Swiger <cswiger at mac.com> Subject: Re: SMP only detects one CPU - help? To: fatman at nospam.crackmonkey.nospam.us Cc: freebsd-questions at freebsd.org Message-ID: <3ADB2E8D-32FE-432E-922F-D38C62B63F42 at mac.com> Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed On Apr 20, 2007, at 9:14 AM, Adam J Richardson wrote:
>> > Finally, mptable shows what's really going on:
>> > "MP Config Base Table Entries:
>> > --
>> > Processors: APIC ID Version State        Family Model Step Flags
>> >              3       0x11    BSP, usable  6      8     3    0x387fbff
>> >              0       0x11    AP, unusable 6      8     3    0x387fbff"
>> >
>> > Apparently the "application processor" is "unusable", whatever that  
>> > means. I am now stuck.
>> >
>> > Is there a software fix for this, or do I have a broken CPU,  
>> > unlikely as it seems? Any help is appreciated.
>> >
>> > Does it seem likely that upgrading both CPUs to the highest Pentium- 
>> > IIIs I can find, which I was thinking about doing anyway, would fix  
>> > the problem?
> 
> It's more likely that updating the system BIOS and trying to tweak  
> any settings related to SMP or ACPI might help.  You might also try  
> enabling or toggling the "PnP OS installed", to avoid having the BIOS  
> configure stuff it doesn't need to boot, and leaving FreeBSD to  
> assign IRQs itself...
> 
> If that doesn't help, I believe there's a freebsd-acpi list which  
> contain people who can look at the dump of your BIOS and fix the  
> broken IRQ assignments it is doing.
> 
> -- -Chuck 

Thanks Chuck. I'll give these suggestions a try and post feedback when 
I'm done. Might not be for two weeks though, as I'm just about to go on 
a trip to the US. :)

Regards,
Adam J Richardson