Comment 4 for bug 397734

Pretty much reproducible. Nothing specific is required - just insert the disk, unmount it from computer location and push eject button to see that nothing happens. Additional annoyance is that unmount requires authorization. Anything else I can turn on to debug this misbehaviour?

kern.log
Jul 14 10:20:59 TBX kernel: [ 4447.115031] UDF-fs: No VRS found
Jul 14 10:20:59 TBX kernel: [ 4447.115037] UDF-fs: No partition found (1)

udev
UDEV [1247562419.211713] add /devices/pci0000:00/0000:00:1f.2/host1/target1:0:1/1:0:1:0/block/sr0 (block)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1f.2/host1/target1:0:1/1:0:1:0/block/sr0
SUBSYSTEM=block
DEVTYPE=disk
SEQNUM=1149
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_RAM=1
ID_CDROM_MRW=1
ID_CDROM_MRW_W=1
ID_VENDOR=_NEC
ID_VENDOR_ENC=_NEC\x20\x20\x20\x20
ID_MODEL=DVD_RW_ND-4571A
ID_MODEL_ENC=DVD_RW\x20ND-4571A\x20
ID_REVISION=1-02
ID_TYPE=cd
ID_BUS=scsi
ID_PATH=pci-0000:00:1f.2-scsi-1:0:1:0
ACL_MANAGE=1
GENERATED=1
DEVNAME=/dev/sr0
MAJOR=11
MINOR=0
DEVLINKS=/dev/block/11:0 /dev/scd0 /dev/disk/by-path/pci-0000:00:1f.2-scsi-1:0:1:0 /dev/cdrom /dev/cdrw /dev/dvd /dev/dvdrw