Il lettore DVD non funziona

Ho installato Ubuntu 13.04 su un Asus A52J. Funziona tutto tranne il lettore/masterizzatore DVD.
Il modello del lettore è SlimtypeDVD A DS8A5SH, è riconosciuto nel BIOS e con Windows funziona (ho provato anche installando Linux Mint 15, stesso problema). Con la 12.04 e la 12.10 funzionava.

$ dmesg | grep CD-ROM
[    2.039526] scsi 1:0:0:0: CD-ROM            Slimtype DVD A  DS8A5SH   XAA2 PQ: 0 ANSI: 5
[    2.045140] cdrom: Uniform CD-ROM driver Revision: 3.20
[    2.045414] sr 1:0:0:0: Attached scsi CD-ROM sr0

$ cdrecord -scanbus
wodim: No such file or directory. 
Cannot open SCSI driver!
For possible targets try 'wodim --devices' or 'wodim -scanbus'.
For possible transport specifiers try 'wodim dev=help'.
For IDE/ATAPI devices configuration, see the file README.ATAPI.setup from
the wodim documentation.

$ wodim --devices
wodim: No such file or directory. 
Cannot open SCSI driver!
For possible targets try 'wodim --devices' or 'wodim -scanbus'.
For possible transport specifiers try 'wodim dev=help'.
For IDE/ATAPI devices configuration, see the file README.ATAPI.setup from
the wodim documentation.

$ cat /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
# / was on /dev/sda1 during installation
UUID=3c981dd1-626e-4f21-8e8e-0b7cd9077c87 /               ext4    errors=remount-ro 0       1
# swap was on /dev/sda5 during installation
UUID=2f7e5099-c8d5-4461-9509-6ec68f8bde76 none            swap    sw              0       0