PowerMac G5 hangs/crashes on boot: 10.2, 11.0-RCx

[Krzysztof Parzyszek]

On 9/9/2016 6:35 AM, Jukka Ukkonen wrote:
>
> The story apparently goes such that the interrupt code shown can be
> pretty much anything. The interrupts might simply be enabled way before
> the system is ready to handle them.

I've had similar issues for quite some time.  Previous releases would 
boot only sometimes, otherwise I'd be getting a hang or a crash.  The 
frequency of the boot problems seems to increase dramatically when I 
boot from the hard-drive, but with 11 it has never booted correctly.

I wasn't the only one seeing this type of a problem and I remember 
seeing a thread about it a while back.  Mark Millard reported it, and 
someone has tracked it down to some register getting (unexpectedly) 
clobbered by the open firmware.  I was hoping this had been fixed, but 
it seems that things have only gotten worse...  :(

CCing Mark---maybe he will know more about this.

-Krzysztof