[sun@example ~]$ lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 004: ID 0e8d:1836 MediaTek Inc.
Bus 002 Device 002: ID 046d:c05d Logitech, Inc.
[sun@example ~]$ dmesg | grep sr0
[    1.422160] sr0: scsi3-mmc drive: 24x/24x writer cd/rw xa/form2 cdda tray
[    1.422311] sr 1:0:0:0: Attached scsi CD-ROM sr0
[  150.372488] sr 1:0:0:0: [sr0] Device not ready
[  150.372493] sr 1:0:0:0: [sr0]  Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[  150.372499] sr 1:0:0:0: [sr0]  Sense Key : Not Ready [current]
[  150.372505] sr 1:0:0:0: [sr0]  Add. Sense: Medium not present
[  150.372512] sr 1:0:0:0: [sr0] CDB: Read(10): 28 00 00 00 24 e5 00 00 40 00
[  150.372524] end_request: I/O error, dev sr0, sector 37780
[  150.372530] Buffer I/O error on device sr0, logical block 9445
[  150.372535] Buffer I/O error on device sr0, logical block 9446
[  150.372539] Buffer I/O error on device sr0, logical block 9447
[  150.372542] Buffer I/O error on device sr0, logical block 9448
[  150.372546] Buffer I/O error on device sr0, logical block 9449
[  150.372549] Buffer I/O error on device sr0, logical block 9450
[  150.372553] Buffer I/O error on device sr0, logical block 9451
[  150.372556] Buffer I/O error on device sr0, logical block 9452
[  150.372560] Buffer I/O error on device sr0, logical block 9453
[sun@example ~]$