Ken Corey wrote:
> 
> Hi All,
> 
> I've got a sad story, and I was hoping that someone might be able to rescue
> me from my own stupidity.
> 
> I've got a couple Compaq AP400 Professional Workstations.  500 Mhz, 128MB
> ram, 9GB hard drive, MGA G200 graphics card, PS/2 keyboard, and USB mouse.
> Not a screamer, but by no means a bad machine.
> 
> I installed Linux kernel 2.4.7, Mandrake 8 on one, and it's running great.
> The Anti-aliased text is beautiful.
> 
> I found out that this machine can be made a dual-processor box!  So, thinking
> two heads were better, I pulled the CPU and memory out of the non-used
> machine, and stuck them into the used machine.
> 
> I started the machine with an SMP kernel, and both CPU's are recognized.  The
> machine works well, and so I recompiled the latest kernel with all the
> gubbins to support USB and dual processors.
> 
> I get all excited, reboot with this new kernel and start X (version 4.0.3).
> X appears to start just fine.
> 
> I say "appears" because I get one click on anything, and then no further
> mouse clicks are recognized.  After a minute or two, the keyboard becomes
> inoperative, even for a ctrl-alt-delete or a alt-Fx console switch.  The
> machine is still alive.  I can ping it...I can move the mouse, I just can't
> click on anything or type anything.  ARGH!
> 
> So, yank out the second CPU, and boot off the same kernel.  Absolutely *no*
> change to the machine, and it works like a champ.  Put back in the second
> CPU, and exactly the same symptoms.
> 
> So, I'm sitting here with my single-CPU box with 256MB RAM, and a spare
> 500Mhz CPU sitting on my desk next to the computer.
> 
> In the scheme of things, just how bad is that anyway, but it's *quite*
> frustrating to a geel like me to be so close, and not be able to use the
> second CPU.
> 
> Any ideas?  Has anyone else run into this before?
> 
> -Ken

All cpu's do not support smp. Check the spec number on your cpu and do
the the Intel web site to determine if smp is supported.

Larry
-- 
Sword'sEdge
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