Hi,
 first of all, let me say that I've looked through all FAQ's
 I could find on the web about SMP. I spent two days
 searching dejanews without obtaining any clue of how to solve
 my problem.
 I have a dual PIII xeon 550 with supermicro mobo with 440GX AGP chipset;
 adaptec aic 7890 on board, 512 MB RAM (100mhz); 3com 3c905B
 ethernet adapter, diamond viper 550 video adapter.
 I compiled two kernels with SMP support, 2.0.36 and 2.2.12
 Both boot ok, but neither of them can find the second CPU. Here
 follows the result of uname -a and the first boot messages
 (from 2.2.12 kernel). Any ideas of what is going on?
 Should I have equipment replaced?

 Thank you very much for the attention.

# uname -a
Linux guiness 2.2.12 #1 SMP Thu Sep 16 06:59:22 EST 1999 i686 unknown

%%% first lines of boot messages
Intel MultiProcessor Specification v1.4
    Virtual Wire compatibility mode.
OEM ID: INTEL    Product ID: 440BX        APIC at: 0xFEE00000
Processor #0 Pentium(tm) Pro APIC version 17
I/O APIC #2 Version 17 at 0xFEC00000.
Processors: 1
mapped APIC to ffffe000 (fee00000)
mapped IOAPIC to ffffd000 (fec00000)
Detected 551258553 Hz processor.
Console: colour VGA+ 80x25
Calibrating delay loop... 550.50 BogoMIPS
Memory: 517316k/524288k available (1056k kernel code, 424k reserved, 5428k
data, 64k init)
Pentium-III serial number disabled.
Checking 386/387 coupling... OK, FPU using exception 16 error reporting.
Checking 'hlt' instruction... OK.
POSIX conformance testing by UNIFIX
mtrr: v1.35a (19990819) Richard Gooch ([EMAIL PROTECTED])
Pentium-III serial number disabled.
per-CPU timeslice cutoff: 100.04 usecs.
CPU0: Intel Pentium III (Katmai) stepping 03
calibrating APIC timer ...
..... CPU clock speed is 551.2682 MHz.
..... system bus clock speed is 100.2304 MHz.
Error: only one processor found

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