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Date:      Thu, 21 May 2020 19:21:24 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 246638] panic on boot: "cannot find a large enough size"
Message-ID:  <bug-246638-227-nr1PdQluwV@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-246638-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-246638-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D246638

--- Comment #8 from Conrad Meyer <cem@freebsd.org> ---
(In reply to Rafael Kitover from comment #7)
Probably the 34MB is wrongly carved from some other domain to not have an
unpopulated domain 0.  Is it possible the DIMMS are installed in an order n=
ot
recommended by the motherboard vendor?  Usually crappy board video chips ju=
st
borrow some system RAM, and that allocation wouldn't be visible to the host=
 OS
(IIRC).

Re: capturing earlier bootup logs, you can put 'kern.msgbufsize=3D"512k"' in
/boot/loader.conf (or similar) to use a larger-than-default msgbufsize.  The
default msgbuf size on CURRENT and STABLE/12 is 96 kB unless configured
otherwise.

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