[issue1133] Hang on boot with ACPI enabled

[Tim]

I'm not sure how much delay there is between the commit and the ISO 
image is
finished, so you may want to try the date between two commits.

You can find ISO snapshots for 2.0-RELEASE at some of our mirror sites,
such as:
  http://pub.allbsd.org/DragonFly/snapshots/i386/ISO-IMAGES/
  


Thanks, I just downloaded the latest release iso dated 9-11-08 and it 
boots fine with ACPI.  Go figure.  Not sure what happened with the 
9-4-08 snapshot.  Maybe I got a corrupt file?  If so, sorry for the 
false alarm.

Tim
Oops, I spoke to soon.  I'm able to reproduce the bug on the 9-11 iso. 
It turns out that the hang occurs if I have the laptop's power adaper 
plugged in.  If the laptop is on battery power, it boots fine with ACPI. 
 I don't remember if I had it plugged in or not when I was testing with 
the July release, so that may very well have had the problem too.

Tim