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Subject: Re: 750gx cpufreq induced kernel panic in 2.6.36
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: kevin diggs <diggskevin38@gmail.com>
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On Wed, 2011-01-26 at 11:20 -0600, kevin diggs wrote:
> This is kind of my problem. ANY suggestions (applicable to an old
> world PowerMac) would be appreciated on how to get access to the rest
> of the information. This thing appears completely dead at this point. 

You don't have a serial port ?

If you do, use "sccdbg" on the kernel command line to route xmon to it,
and boot with console=ttyPZ0,38400 (I think the old things default to
38400 bauds). Use the "modem" port.

Cheers,
Ben.