[paranoia] odd cdrom behavior after using cdparanoia

[Bill Davidsen]

On Mon, 30 Dec 2002, PC^God wrote:

> On Mon, 30 Dec 2002, Greg Wooledge wrote:
> 
> > > Kernel: 2.4.19-gentoo-r10
> >
> > This sounds like a kernel bug to me (a hardware failure would probably
> > not be fixed by reloading the driver).  2.4.19 and .20 are known to have
> > some issues with IDE.  I wonder if "downgrading" to 2.4.18 would be
> > helpful.
> 
> Well, that didn't quite work. the drive still got screwed up. I probed the
> scsi chain using "cdrecord -scanbus" again and it came up with 3 null
> strings. I tried unloading and reloading the modules again, and when I
> loaded ide-scsi, the system froze for a few seconds. Probing the scsi
> chain again provided some garbage data that actually looks like it could
> be useful:
> 
> scsibus0:
>    0,0,0     0) 'block ad' 'dress out of ran' 'ge' reserved Storage array
> 
> That makes it sound like the driver is following a bad pointer somewhere.
> I guess I'll have a look at some kernel changelogs and see if this issue
> is resolved there. Thanks for the help

Anything is possible, but at this point I would be checking termination,
cable tightness, and if the controller was hard addressed to a conflicting
address or something. I've been running a mix of SCSI and ATAPI CD-R and
CD-RW, and other than a burning problem in 2.4.19, they all seem to work
fine. There might be an issue with your particular driver, but I'd also
consider hardware and config issues at this point, since you can fix those
a lot faster.


-- 
bill davidsen <davidsen at tmr.com>
  CTO, TMR Associates, Inc
Doing interesting things with little computers since 1979.

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