SMP only detects one CPU - help?
Adam J Richardson
fatman.uk at gmail.com
Mon Apr 23 18:16:41 UTC 2007
> 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. :)
Adam J Richardson
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