[   30.147744] sr 1:0:0:0: [sr0] Unhandled sense code
[   30.147750] sr 1:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[   30.147757] sr 1:0:0:0: [sr0] Sense Key : Hardware Error [current] 
[   30.147764] sr 1:0:0:0: [sr0] Add. Sense: Timeout on logical unit
[   30.147773] end_request: I/O error, dev sr0, sector 1306864
[   30.147780] Buffer I/O error on device sr0, logical block 163358
[   39.366353] ppdev: user-space parallel port driver
[   42.310907] sr 1:0:0:0: [sr0] Unhandled sense code
[   42.310913] sr 1:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[   42.310919] sr 1:0:0:0: [sr0] Sense Key : Hardware Error [current] 
[   42.310927] sr 1:0:0:0: [sr0] Add. Sense: Timeout on logical unit
[   42.310936] end_request: I/O error, dev sr0, sector 1306864
[   42.310942] Buffer I/O error on device sr0, logical block 163358
[   52.334210] sr 1:0:0:0: [sr0] Unhandled sense code
[   52.334214] sr 1:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[   52.334218] sr 1:0:0:0: [sr0] Sense Key : Hardware Error [current] 
[   52.334223] sr 1:0:0:0: [sr0] Add. Sense: Timeout on logical unit
[   52.334230] end_request: I/O error, dev sr0, sector 1306864
[   52.334236] Buffer I/O error on device sr0, logical block 163358
[   56.737170] wlan0: authenticate with AP 00:14:bf:ee:b8:e4
[   56.739425] wlan0: authenticated
[   56.739429] wlan0: associate with AP 00:14:bf:ee:b8:e4
[   56.741284] wlan0: RX AssocResp from 00:14:bf:ee:b8:e4 (capab=0x411 status=0 aid=4)
[   56.741288] wlan0: associated
[   56.748281] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[   59.318736] sr 1:0:0:0: [sr0] Unhandled sense code
[   59.318742] sr 1:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[   59.318748] sr 1:0:0:0: [sr0] Sense Key : Hardware Error [current] 
[   59.318756] sr 1:0:0:0: [sr0] Add. Sense: Timeout on logical unit
[   59.318764] end_request: I/O error, dev sr0, sector 1306864
[   59.318771] Buffer I/O error on device sr0, logical block 163358
[   67.568045] wlan0: no IPv6 routers present
[   73.573098] sr 1:0:0:0: [sr0] Unhandled sense code
[   73.573104] sr 1:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[   73.573110] sr 1:0:0:0: [sr0] Sense Key : Hardware Error [current] 
[   73.573118] sr 1:0:0:0: [sr0] Add. Sense: Timeout on logical unit
[   73.573126] end_request: I/O error, dev sr0, sector 1306864
[   73.573134] Buffer I/O error on device sr0, logical block 163358
[   78.910164] UDF-fs: No VRS found
[   78.910171] UDF-fs: No partition found (1)
[   79.144384] ISO 9660 Extensions: Microsoft Joliet Level 1
[   79.211026] ISOFS: changing to secondary root