Powerd makes computer hang

[Boris Samorodov]

On Tue, 22 Aug 2006 13:08:59 +0400 Gleb Smirnoff wrote:
> On Sun, Aug 20, 2006 at 05:57:02PM +0400, Boris Samorodov wrote:
> B> On Sun, 20 Aug 2006 21:05:45 +1000 Peter Jeremy wrote:
> B> > On Sun, 2006-Aug-20 16:00:33 +1000, Tim Dettloff wrote:
> B> 
> B> > >I have installed FreeBSD 6.1-RELEASE on my Compaq Presario 2656AU
> B> > >laptop, but it occasionally hangs. I traced the problem to powerd so I
> B> > >made a script that kept changing the clock rate by setting the sysctl
> B> > >dev.cpu.0.freq. This script normally makes the computer hang within 10
> B> > >seconds or so.
> B> 
> B> > Sam Leffler noticed this on his nx6125 last December and I also
> B> > found the same problem on my nx6125 in early February.  It looks
> B> > like there's a race condition in the BIOS code.
> B> 
> B> > >Any Ideas?
> B> 
> B> > My current solution is to manually change the speed using sysctl.
> B> > This doesn't seem to trigger the problem quite as often (though your
> B> > laptop seems far more sensitive than mine).  I would also be interested
> B> > in any real solutions.
> B> 
> B> Glebius@ (CCed) sent me a patch against 6-STABLE which solves the
> B> problem. However, I don't know if the patch was committed.

> If that was a patch that was required for merging the em(4) changes,
> then the answer is "yes". It was merged to STABLE.

Gleb, thanks for the info!

Then I may suggest Tim to upgrade to the lastest -STABLE to avoid the
problem.


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