adaptec 39320 - ahd0: Invalid Sequencer interrupt occurred

UEMURA (fka. MAENAKA) Tetsuya maenaka at
Tue Aug 9 00:21:51 GMT 2005

Posted on Tue, 09 Aug 2005 08:50:07 +1000
by author Sam Lawrance <boris at>
> ahd0: Invalid Sequencer interrupt occurred.
> >>>>>>>>>>>>>>>>>> Dump Card State Begins <<<<<<<<<<<<<<<<<
I had same issue on 5.4-RELEASE, Tyan S2881UG2NR (AIC-7902) with
MaxTronic Sivy disk array.

For my case, while installation, degrading SCSI speed (*) from 320MB/s
to 80MB/s was only solution other than swapping the card to mpt or
something. After installation, it could boot at 160MB/s too.

Other OSs, such as RHEL 64bit or Windows XP 64bit ran fine so I guess it
should be the problem within ahd.

* Limit of negotiable speed, can be set in SCSI BIOS.

UEMURA (fka. MAENAKA) Tetsuya <maenaka at>

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