Date: Mon, 25 Apr 2005 14:42:21 -0500 From: Guy Helmer <ghelmer@palisadesys.com> To: freebsd-stable@freebsd.org Subject: FreeBSD 5.3p6-5.4RC3, Supermicro X6DHR-8G, Dual 3.6GHz Xeons,Adaptec aic7902 SCSI interface doesn't work in UP kernel Message-ID: <426D481D.7080502@palisadesys.com>
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I have SuperMicro X6DHR-8G machines with dual 3.6GHz Xeons and a Seagate 73G drive attached to the on-board aic7902 SCSI channel. A uniprocessor FreeBSD 5.3p6 or 5.4RC3 kernel booted on this machine stops at the SCSI bus probe for a minute or so, and then occasionally spews messages "SIMOE0[0xc]: (ENOVERRUN|ENIOERR)" followed by more info and finally "Issued Channel A Bus Reset, <n> SCBs aborted". It never seems to get past this point. I've tried both BIOS revisions 1.2 and 1.2a with no effect on the errors. Disabling ACPI seemed to have no effect on the errors. Disabling the APIC allowed it to boot successfully. Booting an SMP kernel allows it to boot successfully (this is the obvious workaround, but the problem was first discovered when trying to boot from a GENERIC UP kernel on CD-ROM; booting 5.4-RC3 Disc 1 hangs the same way unless I boot in "Safe" mode). dmesg (from a successful boot), mptable, and "acpidump -t -d" output are available if anyone cares to look: http://www.palisadesys.com/~ghelmer/X6DHR-8G-dmesg.txt http://www.palisadesys.com/~ghelmer/X6DHR-8G-mptable.txt http://www.palisadesys.com/~ghelmer/X6DHR-8G.asl If there is anything else I can provide that will help diagnose the problem, please let me know. Guy -- Guy Helmer, Ph.D. Principal System Architect Palisade Systems, Inc.
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