SMP system not running SMP

Peter Seebach seebs at
Fri Jun 23 01:17:22 UTC 2006

In message <E1FtYpf-000GOG-DI at>, Pete French writes
>> Synopsis:  I have a machine with two processors which only shows one with a
>> FreeBSD SMP kernel.
>[detailes snipped]
>I have precisely the same problem, with almost the same hardware. In my
>case I have a pair of Opteron 242's - I also have to turn off bits of ACPI
>in order not to get it to hang when it boots.
>Are you, by any chance, booting off an Adaptec SCSI controller ? That
>appears to be the only difference in my setup from those people with
>the same board (mine is an MSI) who have it working.
>The problem exists in both 32 bit and 64 bit mode too - I have tried
>numerous things to get it to boot. When I get time I am going to
>dismantle the entire thing and rip out the SCSI controllers and 
>see if it will boot off an old IDE drive.
>Sorry this isn't too helpful, but it makes me feel better to know that
>at least one other person has an identical problem, as it makes me feel
>it;s a BSD issue and not a hardware fault (I have actually changed the
>motjherboard once, to no avail).

Yes, I am booting off the built-in Adaptec controller.  I will put in an IDE
drive, turn off the Adaptec, and see whether that matters.


More information about the freebsd-amd64 mailing list