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Date:      Sat, 31 Dec 2011 15:31:52 -0800
From:      Jeremy Chadwick <freebsd@jdc.parodius.com>
To:        Dan Allen <danallen46@airwired.net>
Cc:        Garrett Cooper <yanegomi@gmail.com>, mav@freebsd.org, freebsd-current@freebsd.org, List Mailing FreeBSD-STABLE <freebsd-stable@freebsd.org>
Subject:   Re: ACPI broke going from 8 to 9
Message-ID:  <20111231233152.GA54245@icarus.home.lan>
In-Reply-To: <04292366-1297-488F-9239-98565828DDC8@airwired.net>
References:  <038588ED-E0E0-46F6-8E28-1926FBE28825@airwired.net> <CAGH67wS6Uua-kXkgHoYF7yUPK-LkCSmmH=DTErCJWsD7-w6MFg@mail.gmail.com> <70F3E6A6-762E-4C4F-B517-C386304DF85F@airwired.net> <CAGH67wRrcyvwkYZvv30WS64hu8ZEhzW91ddWV=DKQ7SkOeDPmg@mail.gmail.com> <8DF650FE-CE0D-4DA4-901C-B19269464F9C@airwired.net> <CAGH67wSh3Qk8-AZU5pMbOBX1Z_0vt8KUMT5kQEUXY_0DaLmuBw@mail.gmail.com> <04292366-1297-488F-9239-98565828DDC8@airwired.net>

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On Sat, Dec 31, 2011 at 04:17:16PM -0700, Dan Allen wrote:
> On 31 Dec 2011, at 12:34 PM, Garrett Cooper wrote:
> 
> > Not yet. Add 'nooptions NEW_PCIB' to your KERNCONF, recompile, and
> > try booting the new kernel. See if this works.
> 
> It worked!  No hang, power button works.  Nice.  I hope this experimental option stays in.
> 
> Thank you everyone for your help.  Happy New Years!

This option isn't documented **anywhere** in the entire src tree.  It's
purely #ifdef all over.

The code in question was committed 7 months ago.  It was MFC'd to
RELENG_8 6 months ago.  Here's the HEAD commit message:

http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/dev/pci/pci.c#rev1.420

The RELENG_8 MFC is revision 1.386.2.15.

The committer is jhb@, with mav@ being the individual who tested it, so
I imagine either of these folks will have some excellent insights as to
what's causing Dan's problem.  I'm CC'ing them both directly on this
thread.

In the meantime: Dan, when you say in your original mail, "I just
upgraded my Dell OptiPlex GX270 from RELENG_8 to RELENG_9", can you
please provide uname -a output from the system when it was running
RELENG_8?  I'm looking specifically for the exact time when the kernel
was built, because there may have been fixes (that broke things for you)
between the above commit and present-day RELENG_8 (I have not examined
all commits).

-- 
| Jeremy Chadwick                                jdc at parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                   Mountain View, CA, US |
| Making life hard for others since 1977.               PGP 4BD6C0CB |




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