Hang with powerd/powernow with SMP enabled

[Michael Nottebrock]

The machine will freeze hard a few seconds after powerd is started up by
the rc script. With kern.smp.disabled=1, everything seems to work fine.
This is with today's 6-STABLE/i386. I see that a fix for that sort of
thing was only recently MFC'd, unfortunately I cannot say whether the
problem was already there before it went in - the box is brand new.

Various debugging information:

sysctl -a | grep cpu:

http://people.freebsd.org/~lofi/cpu_nosmp.txt
http://people.freebsd.org/~lofi/cpu_smp.txt

sysctl -a | grep acpi:

http://people.freebsd.org/~lofi/acpi_nosmp.txt
http://people.freebsd.org/~lofi/acpi_smp.txt

dmesg -v (SMP)

http://people.freebsd.org/~lofi/dmesg_smp.txt

acpidump -dt:

http://people.freebsd.org/~lofi/acpidump.txt


Let me know if I can provide more information.

Cheers,
-- 
   ,_,   | Michael Nottebrock               | lofi at freebsd.org
 (/^ ^\) | FreeBSD - The Power to Serve     | http://www.freebsd.org
   \u/   | K Desktop Environment on FreeBSD | http://freebsd.kde.org


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