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Date:      Thu, 25 Sep 2008 00:11:18 -0700
From:      Navdeep Parhar <nparhar@gmail.com>
To:        Jia-Shiun Li <jiashiun@gmail.com>
Cc:        freebsd-current@freebsd.org
Subject:   Re: Unable to boot Asus P5QL-EM w/ acpi enabled
Message-ID:  <20080925071118.GA8984@insightsol.com>
In-Reply-To: <1d6d20bc0809242142ge545896u332cc8e23212383a@mail.gmail.com>
References:  <1d6d20bc0809170846g69311401j7f93f97969756e43@mail.gmail.com> <1d6d20bc0809190111ic50d597tea2ac6a0917c41@mail.gmail.com> <1d6d20bc0809241011n5b88b161w96ba38f4956ce861@mail.gmail.com> <200809241335.48472.jhb@freebsd.org> <1d6d20bc0809242142ge545896u332cc8e23212383a@mail.gmail.com>

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On Thu, Sep 25, 2008 at 12:42:38PM +0800, Jia-Shiun Li wrote:
> On Thu, Sep 25, 2008 at 1:35 AM, John Baldwin <jhb@freebsd.org> wrote:
> > On Wednesday 24 September 2008 01:11:31 pm jiashiun li wrote:
> >>
> >> I did a binary search and found the problem lies between 2008-08-22
> >> and 2008-08-23. Here is my note:
> >>
> > If you grab the latest bits from HEAD you can use 'hw.pci.mcfg=0' to disable
> > memcfg.
> >
> 
> Thanks, quick search the mailing list revealed some cases and your
> solution just a few days ago. I should have followed the mailing list
> more carefully. ;)
> 
> Just curious, any idea why the memory mapped configuration prevents
> kernel from booting? Maybe buggy hardware, acpi code, or combination
> of both that users can help testing to find the cause?

I would like to put in a me-too here.  I've been using hw.pci.mcfg=0
since it was introduced but I still don't know where exactly the problem
is, or how to pinpoint it (bad bios/bad hardware/bad phase of the
moon/etc).  The bleeding versions of other OS'es seem to work out of the
box, though that doesn't mean much - I'm not sure what they do inside.

Regards,
Navdeep



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