I have reported my problems also to linux-scsi, where Mark Bottomly very quickly
diagnosed that I must have a hardware problem (i.e., wide is not working, 
although it
should), but that the newer kernels do not handle the situation correctly. I 
post links
to the relevant thread(s) and attach the patch Mark sent to linux-scsi. 

I could compile a kernel based on the gutsy sources, 
linux-source-2.6.22_2.6.22-12.36_all.deb.
The patch applies cleanly, and the machine boots, reducing the SCSI speed to 
40MHz as
it should in the case of failing wide negotion.

Here are the threads:

http://marc.info/?t=119029481600004&r=1&w=2 (my original report plus helpful 
replies)
http://marc.info/?l=linux-scsi&m=119046843406121&w=2 (the patch, which I'll 
also attach!)

All credits to Mark Bottomly!!!

I want to add that the gutsy based 2.6.22 kernel gives me the device-mapper 
syslog messages
and mount problems reported in Bug #119315 in udev (Ubuntu). As described 
there, removing all
evms packages cures the problem, but seems a bit "overkill" to me (even though 
I don't use it ..)

** Attachment added: "revised handling of domain validation (by James Bottomly)"
   http://launchpadlibrarian.net/9475747/aic79xx.patch

-- 
aic79xx module crashes: Install of Gutsy (Tribe 5) and Feisty fails
https://bugs.launchpad.net/bugs/140906
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