Same issue on my 64bit - 32bit working. My dmesg might help? strace
attached.
apt-cache policy udev
udev:
Installed: 151-8
Candidate: 151-8
Version table:
*** 151-8 0
500 http://archive.ubuntu.com/ubuntu/ lucid/main Packages
100 /var/lib/dpkg/status
$ sudo /lib/udev/cdrom_id /dev/sr0
ID_CDROM=1
ID_CDROM_CD_R=1
ID_CDROM_CD_RW=1
ID_CDROM_DVD=1
ID_CDROM_DVD_R=1
ID_CDROM_DVD_RW=1
ID_CDROM_DVD_RAM=1
ID_CDROM_DVD_PLUS_R=1
ID_CDROM_DVD_PLUS_RW=1
ID_CDROM_DVD_PLUS_R_DL=1
ID_CDROM_MRW=1
ID_CDROM_MRW_W=1
ID_CDROM_MEDIA=1
ID_CDROM_MEDIA_CD_R=1
$ dmesg | tail
[ 87.989286] Info fld=0x0
[ 87.989289] sr 1:0:0:0: [sr0] Add. Sense: Logical block address out of range
[ 87.989295] sr 1:0:0:0: [sr0] CDB: Read(10): 28 00 00 00 00 00 00 00 01 00
[ 87.989308] end_request: I/O error, dev sr0, sector 0
[ 87.991559] sr 1:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[ 87.991565] sr 1:0:0:0: [sr0] Sense Key : Illegal Request [current]
[ 87.991572] Info fld=0x0
[ 87.991574] sr 1:0:0:0: [sr0] Add. Sense: Logical block address out of range
[ 87.991581] sr 1:0:0:0: [sr0] CDB: Read(10): 28 00 00 00 00 00 00 00 01 00
[ 87.991594] end_request: I/O error, dev sr0, sector 0
** Attachment added: "cdrom_idnew.trace"
http://launchpadlibrarian.net/43957557/cdrom_idnew.trace
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Blank cd/dvd not recognized [LUCID]
https://bugs.launchpad.net/bugs/561585
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