It looks like the drive detects the medium, but K3b and brasero do
not detect the drive. Do they give any indication that they do ?
Did you try Xfburn ?
Do burn backends find the drive at all ?
cdrecord -scanbus
xorriso -devices
If it is the only DVD drive in the computer, the address is supposed
to be
/dev/cd0. You may inquire what the drive recognizes as loaded
medium by
xorriso -outdev /dev/cd0 -toc
If it believes to be empty, the xorriso messages will contain the line
Code:
Media current: is not recognizable
If there is a medium recognized, then its type will be reported
Another inquiry run would be
dvd+rw-mediainfo /dev/cd0
Watch for lines
Code:
:-( no media mounted, exiting...
or
Code:
Mounted Media: 1Ah, DVD+RW
If it is clear that the backends detect drive and medium, then obviously
the GUI frontends do not ask their burn backends but rather some device
managing software which is either not available or mislead. (I could tell
names on other OS. FreeBSD 8 is refreshingly free of such annoyance.)
This thread talks of "hal" and re-compiling backends (which would mean
that ioctl numbers differ between FreeBSD installations ?):
http://lists.freebsd.org/pipermail/freebsd-questions/2012-April/239993.html
If the backends work and you tell the actual DVD task you want to
perform, then
iI could possibly propose a command line for the backend
of your choice.