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Date:      Sat, 3 Sep 2011 10:32:05 -0400
From:      Daniel Eischen <eischen@vigrid.com>
To:        Adrian Chadd <adrian@freebsd.org>
Cc:        Daniel Eischen <deischen@freebsd.org>, Eitan Adler <lists@eitanadler.com>, "freebsd-current@freebsd.org" <freebsd-current@freebsd.org>
Subject:   Re: ath0 no longer attaches, cardbus problems?
Message-ID:  <3C2243F3-8DBA-40A2-A7FF-B668A9809FEE@vigrid.com>
In-Reply-To: <CAJ-Vmo=Y1V0fo%2B5_MWcnTk_DmoSPRbO8=B6eWLi28T2=yjmzUw@mail.gmail.com>
References:  <Pine.GSO.4.64.1108242007100.23746@sea.ntplx.net> <201108250940.44847.jhb@freebsd.org> <Pine.GSO.4.64.1108251313130.28322@sea.ntplx.net> <Pine.GSO.4.64.1109021226010.9560@sea.ntplx.net> <CAJ-Vmo=k14BTrrUJ4L4=83mjwPPgM7m=ik%2BhSzNEU4A8Dn%2BQFQ@mail.gmail.com> <CAF6rxgmwk%2BJXkSN%2B_TnduogPfD0P-W0MGunWiYSkYAyHVE26Xg@mail.gmail.com> <CAJ-Vmo=Y1V0fo%2B5_MWcnTk_DmoSPRbO8=B6eWLi28T2=yjmzUw@mail.gmail.com>

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On Sep 3, 2011, at 2:02 AM, Adrian Chadd <adrian@freebsd.org> wrote:

> On 3 September 2011 12:35, Eitan Adler <lists@eitanadler.com> wrote:
>=20
>> The best way to do this is to find a known working version of the
>> kernel and then "bisect" the version from the known bad and known good
>> versions until you arrive at the breaking commit. It is easier if you
>> look at the svn log to see which commits might matter.  Yes this takes
>> a while, but is the surest way to find the regression.
>=20
> You shouldn't have to try many kernels. 130,000 revisions, only a max
> of 18 attempts needed. :)
>=20
> No, you don't need a whole buildworld. Just try booting the kernel and
> see when it attaches.

There's a reason I haven't upgraded this system in over a year.  It takes a l=
ong time to update the src tree and a long time to build a kernel.  I miss t=
he 2.x/3.x days where you could build world on system like this in about an h=
our or so.

--
DE=



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