powernow regression in 8-STABLE

Jung-uk Kim jkim at FreeBSD.org
Tue Jul 19 16:05:02 UTC 2011

On Tuesday 19 July 2011 07:20 am, Callum Gibson wrote:
> Hi,
> I've just noticed and tracked down a regression in
> x86/cpufreq/powernow.c (on amd64) which was first mentioned here:
> http://lists.freebsd.org/pipermail/freebsd-current/2011-March/02350
> although no followup seems to have occurred.
> Symptoms are that powerd stops working because the dev.cpu.0.freq
> OID is no longer gettable nor settable.
> This seems to have been caused by the following revision:
> http://svnweb.freebsd.org/base?view=revision&revision=222148
> which was in turn an MFC of r221102, so I guess the problem exists
> on -current as well, although I can't confirm that since I don't
> run it.
> Reverting the change fixes the problem and powerd will work again.
> Also other utilities, such as xacpim, work properly.
> I'm running a ML-40 Turion laptop (HP Compaq nx6125).

HP again...  Can you please show me verbose boot messages?


Jung-uk Kim

More information about the freebsd-stable mailing list