cdrecord-ProDVD and Liteon DVDRW LDW-451S?

[Anssi Saari <as@sci.fi>]

Hello,

My Teac DV-W50E, actually a rebadged Pioneer 105, gave up the ghost,
so I quickly got a LiteOn LDW-451S DVD writer. It works fine in Windows
XP and Nero for DVD writing, but cdrecord-ProDVD in Linux doesn't seem
to think it's a DVD writer at all.

For example:

$ ./cdrecord-wrapper.sh dev=/dev/hdc -v /mnt/work/test
Cdrecord-ProDVD-Clone 2.01a23-2 (i686-pc-linux-gnu) Copyright (C) 1995-2003 Jörg Schilling
Unlocked features: ProDVD Clone 
Limited  features: 
This copy of cdrecord is licensed for: private/research/educational_non-commercial_use
TOC Type: 1 = CD-ROM
./cdrecord-ProDVD: Operation not permitted. WARNING: Cannot do mlockall(2).
./cdrecord-ProDVD: WARNING: This causes a high risk for buffer underruns.
./cdrecord-ProDVD: Operation not permitted. WARNING: Cannot set RR-scheduler
./cdrecord-ProDVD: Permission denied. WARNING: Cannot set priority using setpriority().
./cdrecord-ProDVD: WARNING: This causes a high risk for buffer underruns.
scsidev: '/dev/hdc'
devname: '/dev/hdc'
scsibus: -2 target: -2 lun: -2
Warning: Open by 'devname' is unintentional and not supported.
Linux sg driver version: 3.5.27
Using libscg version 'schily-0.7'.
SCSI buffer size: 64512
atapi: 1
Device type    : Removable CD-ROM
Version        : 0
Response Format: 2
Capabilities   : 
Vendor_info    : 'LITE-ON '
Identifikation : 'DVDRW LDW-451S  '
Revision       : 'GSB6'
Device seems to be: Generic mmc2 DVD-ROM.
Current: DVD-R sequential recording
Profile: DVD+R 
Profile: DVD+RW 
Profile: DVD-RW sequential overwrite 
Profile: DVD-RW restricted overwrite 
Profile: DVD-R sequential recording (current)
Profile: DVD-ROM 
Profile: CD-RW 
Profile: CD-R 
Profile: CD-ROM 
./cdrecord-ProDVD: Sorry, no supported CD/DVD-Recorder found on this target.

Any help? Result is the same if I use ide-scsi and dev=1,0,0 instead or
run as root, although with less warnings.