"Jakma, Paul" wrote:
>
> > "Jakma, Paul" wrote:
> > >
> > > > Qlogic appear to be unable to drive CD-RW drives, a Yamaha 4416
> > > > in my case. Even with newer kernels. They run disks fine.
> > > >
> > >
> > > The problem is most likely with the 4416, which has had some amazing
> > > firmware bugs. Upgrade to the latest firmware and it will
> > probably work.
> > >
> >
> > It works fine on a Tekram DC390F on the same system.
> >
>
> Like I said, the Yamaha has some really weird firmware bugs. Eg certain
> firmware rev's will lockup on wide or ultra negotiation. Maybe your DC390F
> is set to not negotiate u/w with the yamaha, in which case it will work.
>
> You need to upgrade the 4416 to the latest firmware, which iirc is revision
> G something. I doubt it's the SCSI controller, as both the Qlogic and Tekram
> are Symbios/NCR based.
>
A Qlogic ISP and Symbios are different chipsets.
Go browse the drivers/scsi directory. If you grep
thru the Qlogic code, you'll see what I'm describing.
> I had the exact same problem with my 4416. To get it to work i had to power
> it up *after* booting linux, then tell the linux symbios driver not to
> attempt u/w negotiation for it before doing the old 'echo "scsi
> add-single-device ...' trick.
>
Sounds like your problem is dfferent than mine.
Nothing special was done to the SCSI card.
Wes
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