Lots of READ_BIG errors on my new cd drive

[Chuck Swiger]

Doug Barton wrote:
[ ... ]
> I get a lot of errors that look like this:
> 
> acd0: FAILURE - READ_BIG HARDWARE ERROR asc=0x3e ascq=0x02
> 
> On CDs and DVDs that I've recorded on other drives, that I've recorded
> on this drive, and commercial ones.
> 
> Any ideas on where to start looking?

Does toggling:

    hw.ata.ata_dma="0"

...in loader.conf make a difference?

I'd imagine you'd like DMA to work but knowing whether the problem goes anyway 
with DMA off is useful to test.  For that matter, does a careful application 
of compressed air to remove any dust or lint inside the drive help?

Also, is this problem specific to -CURRENT or reproducible elsewhere?

-- 
-Chuck