Insomniac Sawtooth

[Jim Robertson]

I have a 450 MHz G4 AGP "Sawtooth" that I've never been able to get to
sleep. Out of the box, it did sleep, but when I installed an internal 1
Gbyte Jaz cartridge drive attached to an Adaptec 29160 SCSI PCI card, the
computer would always jump back to alert immediately after the fan spun
down. I always attributed this to the Jaz Drive. Today I finally decided to
fix this, so I opened the case and unplugged the Jaz data cable.

No luck. Each time I tell the computer to sleep, the fans and drives spin
down and the main power-on LED changes transiently from green to amber, but
then the power LED returns to green AND the activity light on the Jaz
flashes.

Another trip back inside, disconnect the Jaz drive's power cable. No luck
(of course the Jaz drive's activity light no longer flashes, but that's the
only change).

SO...

I completely remove the 29160 SCSI card (which is supposed to be compatible
with deep sleep, by the way), and the machine STILL won't stay asleep.

I have OS X 10.2.8 with all current updates installed on this machine.
There's NOTHING on the external USB bus except keyboard and mouse. There's
an iSight camera on one of the FireWire ports.

I'll try cycling the CUDA switch on the motherboard to see if that helps.
Does anyone have any other ideas?

Thanks so much,

Jim Robertson
--