I'm suffering from the same issue, on an 64bit Lenovo R500 with karmic. Here is the output of "wodim -checkdrive -v" TOC Type: 1 = CD-ROM Device was not specified. Trying to find an appropriate drive... Detected CD-R drive: /dev/cdrw Using /dev/cdrom of unknown capabilities scsidev: '/dev/cdrom' devname: '/dev/cdrom' scsibus: -2 target: -2 lun: -2 Linux sg driver version: 3.5.27 Wodim version: 1.1.9 Driveropts: 'burnfree' SCSI buffer size: 64512 Device type : Removable CD-ROM Version : 5 Response Format: 2 Capabilities : Vendor_info : 'MATSHITA' Identification : 'DVD-RAM UJ880A ' Revision : 'SB01' Device seems to be: Generic mmc2 DVD-R/DVD-RW. Current: 0x0009 (CD-R) Profile: 0x0012 (DVD-RAM) Profile: 0x002B (DVD+R/DL) Profile: 0x001B (DVD+R) Profile: 0x001A (DVD+RW) Profile: 0x0016 (DVD-R/DL layer jump recording) Profile: 0x0015 (DVD-R/DL sequential recording) Profile: 0x0013 (DVD-RW restricted overwrite) Profile: 0x0014 (DVD-RW sequential recording) Profile: 0x0011 (DVD-R sequential recording) Profile: 0x0010 (DVD-ROM) Profile: 0x000A (CD-RW) Profile: 0x0009 (CD-R) (current) Profile: 0x0008 (CD-ROM) Profile: 0x0002 (Removable disk) Using generic SCSI-3/mmc CD-R/CD-RW driver (mmc_cdr). Driver flags : MMC-3 SWABAUDIO BURNFREE Supported modes: TAO PACKET SAO Drive buf size : 1310720 = 1280 KB Beginning DMA speed test. Set CDR_NODMATEST environment variable if device communication breaks or freezes immediately after that. For reference, here is the output of Schily's original cdrtools cdrecord output as well (in setuid mode): $ cdrtools-2.01.01/cdrecord/OBJ/x86_64-linux-cc/cdrecord -version Cdrecord-ProDVD-ProBD-Clone 2.01.01a74 (x86_64-unknown-linux-gnu) Copyright (C) 1995-2010 J?rg Schilling $ cdrtools-2.01.01/cdrecord/OBJ/x86_64-linux-cc/cdrecord -version Cdrecord-ProDVD-ProBD-Clone 2.01.01a74 (x86_64-unknown-linux-gnu) Copyright (C) 1995-2010 J�rg Schilling leo@pelican:~/opt/cdrtools$ #cdrtools-2.01.01/cdrecord/OBJ/x86_64-linux-cc/cdrecord -checkdrive -v leo@pelican:~/opt/cdrtools$ leo@pelican:~/opt/cdrtools$ leo@pelican:~/opt/cdrtools$ leo@pelican:~/opt/cdrtools$ cdrtools-2.01.01/cdrecord/OBJ/x86_64-linux-cc/cdrecord -checkdrive -v Cdrecord-ProDVD-ProBD-Clone 2.01.01a74 (x86_64-unknown-linux-gnu) Copyright (C) 1995-2010 J�rg Schilling TOC Type: 1 = CD-ROM Linux sg driver version: 3.5.34 Using libscg version 'schily-0.9'. SCSI buffer size: 32768 No target specified, trying to find one... Using dev=1,0,0. atapi: 1 Device type : Removable CD-ROM Version : 5 Response Format: 2 Capabilities : Vendor_info : 'MATSHITA' Identifikation : 'DVD-RAM UJ880A ' Revision : 'SB01' Device seems to be: Generic mmc2 DVD-R/DVD-RW/DVD-RAM. Current: CD-R Profile: DVD-RAM Profile: DVD+R/DL Profile: DVD+R Profile: DVD+RW Profile: DVD-R/DL layer jump recording Profile: DVD-R/DL sequential recording Profile: DVD-RW restricted overwrite Profile: DVD-RW sequential recording Profile: DVD-R sequential recording Profile: DVD-ROM Profile: CD-RW Profile: CD-R (current) Profile: CD-ROM Profile: Removable Disk Using generic SCSI-3/mmc CD-R/CD-RW driver (mmc_cdr). Driver flags : MMC-3 SWABAUDIO BURNFREE Supported modes: TAO PACKET SAO Drive buf size : 1310720 = 1280 KB cdrtools-2.01.01/cdrecord/OBJ/x86_64-linux-cc/cdrecord: Warning: Cannot read drive buffer. cdrtools-2.01.01/cdrecord/OBJ/x86_64-linux-cc/cdrecord: Warning: The DMA speed test has been skipped.