HP Compaq nc6320 - Booting on battery power causes softlock

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Hi, I've got an issue with my HP Compaq nc6320, where it won't boot off
its battery without softlocking on CPU#0. I remember it booting ok off
battery occasionally in the past, but once I've seen the fault - the
only way I can get it to boot is off AC. (I usually boot off AC anyway).

I'm presuming ACPI as a good starting point, since that is an area where
AC / Battery may make a difference.

Can anyone suggest a debugging procedure to identify the cause of a
softlock, and where would be appropriate (which category) to file a
kernel bug for this?

-- 
Peter Clifton

Electrical Engineering Division,
Engineering Department,
University of Cambridge,
9, JJ Thomson Avenue,
Cambridge
CB3 0FA

Tel: +44 (0)7729 980173 - (No signal in the lab!)

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