Ken Teh said...
|
|cpuspeed was off.  If I say 'shutdown -h now', the machines powers off 
|after a clean shutdown.  If I say 'shutdown -r now', it brings the 
|machine down.  The last steps are remounting md0 readonly and syncing 
|the SATA drives.  The last line it prints on the screen is 'Restarting 
|system'.  Then, it just sits there.  I have to use the front-panel 
|switch to turn it off, then power it back on.  Which is a bummer if you 
|have to reboot it remotely. Btw, the front-panel switch is one of these 
|new types when you have to hold it down for several seconds before it 
|actually powers the machine off.

That should be changeable in teh BIOS.

Does the reboot switch not work?

|I'm wondering if it's some hardware problem.  It's my understanding that 
|a restart is basically like a push button reset.  The last thing the CPU 
|does is pull the reset line (A20 or A21 ??) which causes the M/B to go 
|through its boot-up.  But, now with ACPI and these smart power supplies, 
|I was wondering if somehow this is the cause of my problem.
|
|Any other suggestions?

We have some systems here that do this when we add in
certain sound cards.  It appears to be an interrupt or
similar resource conflict.