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Date:      Thu, 06 Oct 2005 15:02:38 +0200
From:      Hroi Sigurdsson <hroi@ngdc.net>
To:        freebsd-acpi@freebsd.org
Subject:   ACPI regression on IBM x336, dual Xeon EM64T, FreeBSD 6.0-BETA5
Message-ID:  <4345206E.1090406@ngdc.net>

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Hi.

The new ACPI code in FreeBSD 6.0/amd64 is causing hard lock-ups on IBM 
x336 servers during boot, right after printing:

Timecounter *mumble* frequency *mumble* Hz quality *mumble*
Timecounters tick every 1.000 msec

I haven't been able to gather more than that from 6.0, unfortunately due 
to KVM limitations.

Setting hint.acpi.0.disabled=1 enables booting, but then the second CPU 
isn't found. BIOS version is 1.11 (newest).
FreeBSD 5.4-STABLE does not have this problem (We went with 6.0 for the 
improved mpt driver, but decided to run 5.4 with the mpt driver from 6.0 
instead).

Various debug output gathered from 5.4 is at 
http://quentin.asdf.dk/~hroi/freebsd/

How can I help debug this further? I have another spare (single-CPU) 
x336 available to test with. I can hook it to serial console server, IP 
KVM and remote power switch if needed.

-- 
Hroi Sigurdsson · NetGroup DataCenter A/S
St. Kongensgade 40H · DK-1264 Copenhagen K, Denmark
Phone: +45 3370 1544 · Fax: +45 7025 2687


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