Re: Problem using a TEAC DV-W22E with dvd+rw-tools/cdrecord-prodvd/dvdrtools.
dvd+rw-tools were teached to obtain sense information from kernel
manually, so they fully work on 5.2.1. cdrecord relies on working
autosense and thus don't work on 5.2.1.
I would call this behavior of dvd+rw-tools a bug as the CAM standard
requires auto-sense to work. If FreeBSD is fixed, the modified
dvd+rw-tools will stop working in case it correctly evaluates
I can assure FreeBSD users that dvd+rw-tools won't stop working the
moment the kernel bug in question is fixed. Nor would you have to
recompile dvd+rw-tools after it's fixed. dvd+rw-tools detect the kernel
deficiency at run-time and are designed to work in either particular
Can one criticize dvd+rw-tools for so to say sweeping the bug under the
carpet, which might have indirectly complicated life for other
applications and their developers? Well, one could *if* it was done
silently. But it wasn't. Thorough problem analysis was presented to the
public on a FreeBSD list (see
the moment this [non-intrusive] workaround was introduced in
dvd+rw-tools 5.15.x update. The problem description explicitly mentions
that *all* recording applications are affected, thus depicting how
serious problem is. A.