On Thu, 4 Oct 2007, Jared D. McNeill wrote:

> On Thu, 4 Oct 2007, Stephen Borrill wrote:
>> Any clues on where to look to track this down?
>
> For the hell of it, can you try an up-to-date kernel from the jmcneill-pm 
> branch? Lots and lots and lots of ACPI related changes that could fix this 
> (new ACPI-CA, interrupt routing changes, etc...)

To answer both you and Joerg, I've tried -current GENERIC and -current 
jmcneill-pm GENERIC.  They both have the same problem as 4.0_RC3 (plugging 
in a umass device kills uhci with no messages). A acpi netbsd-3 kernel 
does not exhibit this.

-- 
Stephen