Powerd makes computer hang

[Boris Samorodov]

On Sun, 20 Aug 2006 21:05:45 +1000 Peter Jeremy wrote:
> On Sun, 2006-Aug-20 16:00:33 +1000, Tim Dettloff wrote:

> >I have installed FreeBSD 6.1-RELEASE on my Compaq Presario 2656AU
> >laptop, but it occasionally hangs. I traced the problem to powerd so I
> >made a script that kept changing the clock rate by setting the sysctl
> >dev.cpu.0.freq. This script normally makes the computer hang within 10
> >seconds or so.

> Sam Leffler noticed this on his nx6125 last December and I also
> found the same problem on my nx6125 in early February.  It looks
> like there's a race condition in the BIOS code.

> >Any Ideas?

> My current solution is to manually change the speed using sysctl.
> This doesn't seem to trigger the problem quite as often (though your
> laptop seems far more sensitive than mine).  I would also be interested
> in any real solutions.

Glebius@ (CCed) sent me a patch against 6-STABLE which solves the
problem. However, I don't know if the patch was committed.


WBR
-- 
Boris Samorodov (bsam)
Research Engineer, http://www.ipt.ru Telephone & Internet SP
FreeBSD committer, http://www.FreeBSD.org The Power To Serve