resume slow on Thinkpad T42 FreeBSD 8-STABLE

Jeremy Chadwick freebsd at
Wed Sep 29 17:37:39 UTC 2010

On Wed, Sep 29, 2010 at 08:24:21PM +0300, Vitaly Magerya wrote:
> Jeremy Chadwick wrote:
> > On Wed, Sep 29, 2010 at 09:57:53AM -0700, Chuck Swiger wrote:
> >> Is prime95 testing running stable after waking from sleep?
> Yes, 0 errors, 0 warnings.
> > The Thinkpad hardware he's on is """old""" (note the quotes), so I
> > wouldn't be surprised if the CPU (Intel Pentium M) happens to induce a
> > strange/odd MCA event as a result of going in/out of sleep state.  It
> > could be a general system bug of some sort as well (one which has no
> > repercussions).
> Well, since it causes no other visible problems, it might just as well
> be a false alarm.

Highly possible.  If it bothers you to the point where you'd rather not
see it, you can disable MCA events by setting hw.mca.enabled="0" in
/boot/loader.conf.  I don't know of a way to conditionally ignore
certain MCAs.

| Jeremy Chadwick                                   jdc at |
| Parodius Networking              |
| UNIX Systems Administrator                  Mountain View, CA, USA |
| Making life hard for others since 1977.              PGP: 4BD6C0CB |

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