1. At last, my Adaptec 2940W problem SOLVED!
Ah, at last I got it to work:
I have an IBM 320 server with an adaptec 2940w, 4x2Gb disks and
an IBM CD-ROM. The cdrom identifies itself as CDRM00203.
It worked perfectly with win95. Yes, YES, the termination is
When I installed Linux I ran into 1.0e6 problems with the disks
and the CD-ROM.
I first installed redhat 4.0, kernel 2.0.18, later upgraded to
The problem was, that linux would stop with a lot of scsi resets
when I try to access the CD-ROM. Usually, it would run for a
short time if I used the command:
tar cvf /dev/null /mnt/cdrom
but if I copied the files to the harddisks it would stop immediately,
with a lot of scsi resets.
The solution to the problem was to enter the scsi setup during
boot (with ctrl-A), and disable initiate sync negotiation for
the cdrom drive, and fixing the speed at 5MHz. The disks run at
This solved the problem, and it now works great.
The question left is of course, why is this necessary? Is this
a problem with the aic7xxx driver that it doesn't know how to
change speed correctly? As I said before, it works under win95,
I could copy files from the CD to the harddisk without any problems.
Mogens Kjaer, Carlsberg Laboratory, Dept. of Chemistry
Gamle Carlsberg Vej 10, DK-2500 Valby, Denmark
Phone: +45 33 27 53 25, Fax: +45 33 27 47 08
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