Dual G5 1.8GHZ with a dead CPU

[mwdmeyer]

Hey everyone,

I've got a Powermac G5, dual 1.8GHz. Last week it started kernel panicking. I've replaced the ram, tested a different hard drive, installed leopard. Nothing would fix it. It was just randomly crashing.

So I decided to have a play around with moving the CPUs around as the system seemed to be locking up because of CPU 1 (slave?).

I've successfully got the system running again but I needed to move the bottom CPU to the top CPU slot and completely remove the other CPU. It seems to be running fine now except that the fans seem to be running at 100% the whole time.

Has anyone run a dual G5 with one CPU, is there anyway to get the computer to calm down (maybe an open firmware hack?).

Thanks!

 

[newtech]

Hey everyone,

I've got a Powermac G5, dual 1.8GHz. Last week it started kernel panicking. I've replaced the ram, tested a different hard drive, installed leopard. Nothing would fix it. It was just randomly crashing.

So I decided to have a play around with moving the CPUs around as the system seemed to be locking up because of CPU 1 (slave?).

I've successfully got the system running again but I needed to move the bottom CPU to the top CPU slot and completely remove the other CPU. It seems to be running fine now except that the fans seem to be running at 100% the whole time.

Has anyone run a dual G5 with one CPU, is there anyway to get the computer to calm down (maybe an open firmware hack?).

Thanks!

Anytime a G5 CPU module is replaced or moved to the other connector a thermal calibration MUST be performed. Thermal calibration is part of the AASP only Apple Service Diagnostics package.

 

[mwdmeyer]

Thanks newtech.

Looks like I need ASD 2.5.8, unfortunately I don't have a copy...