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[ 1360.700847] scsi7 : SCSI emulation for USB Mass Storage devices
[ 1360.703123] usb-storage: device found at 6
[ 1360.703129] usb-storage: waiting for device to settle before scanning
[ 1365.696715] usb-storage: device scan complete
[ 1365.698586] scsi 7:0:0:0: Direct-Access     UNDEF    storage          1.0  PQ: 0 ANSI: 0
[ 1365.699366] sd 7:0:0:0: Attached scsi generic sg4 type 0
[ 1365.704506] sd 7:0:0:0: [sdd] 8265 512-byte logical blocks: (4.23 MB/4.03 MiB)
[ 1365.706032] sd 7:0:0:0: [sdd] Write Protect is off
[ 1365.706039] sd 7:0:0:0: [sdd] Mode Sense: 04 00 00 00
[ 1365.706044] sd 7:0:0:0: [sdd] Assuming drive cache: write through
[ 1365.711052] sd 7:0:0:0: [sdd] Assuming drive cache: write through
[ 1365.711058]  sdd: unknown partition table
[ 1365.721100] sd 7:0:0:0: [sdd] Assuming drive cache: write through
[ 1365.721108] sd 7:0:0:0: [sdd] Attached SCSI removable disk
[ 1668.730246] usb 2-1.1: USB disconnect, address 6
[ 1706.529555] hub 2-1:1.0: unable to enumerate USB device on port 1
[ 1708.891174] usb 2-1.1: new high speed USB device using ehci_hcd and address 8
[ 1709.000540] usb 2-1.1: configuration #1 chosen from 1 choice
[ 1709.012643] scsi8 : SCSI emulation for USB Mass Storage devices
[ 1709.014721] usb-storage: device found at 8
[ 1709.014726] usb-storage: waiting for device to settle before scanning
[ 1714.007829] usb-storage: device scan complete
[ 1714.008569] scsi 8:0:0:0: Direct-Access     SanDisk  Sansa Clip+ 2GB  v01. PQ: 0 ANSI: 0
[ 1714.009128] scsi 8:0:0:1: Direct-Access     SanDisk  Sansa Clip+ 2GB  v01. PQ: 0 ANSI: 0
[ 1714.009576] sd 8:0:0:0: Attached scsi generic sg4 type 0
[ 1714.009679] sd 8:0:0:1: Attached scsi generic sg5 type 0
[ 1714.012975] sd 8:0:0:0: [sdd] 3801088 512-byte logical blocks: (1.94 GB/1.81 GiB)
[ 1714.013461] sd 8:0:0:0: [sdd] Write Protect is off
[ 1714.013470] sd 8:0:0:0: [sdd] Mode Sense: 04 00 00 00
[ 1714.013476] sd 8:0:0:0: [sdd] Assuming drive cache: write through
[ 1714.015696] sd 8:0:0:0: [sdd] Assuming drive cache: write through
[ 1714.015706]  sdd:
[ 1714.017376] sd 8:0:0:1: [sde] Attached SCSI removable disk
[ 1716.118283]  unknown partition table
[ 1716.122068] sd 8:0:0:0: [sdd] Assuming drive cache: write through
[ 1716.122080] sd 8:0:0:0: [sdd] Attached SCSI removable disk
[ 1798.155192] sd 8:0:0:0: [sdd] Unhandled sense code
[ 1798.155199] sd 8:0:0:0: [sdd] Result: hostbyte=DID_ERROR driverbyte=DRIVER_SENSE
[ 1798.155206] sd 8:0:0:0: [sdd] Sense Key : Hardware Error [current] 
[ 1798.155214] sd 8:0:0:0: [sdd] Add. Sense: No additional sense information
[ 1798.155222] end_request: I/O error, dev sdd, sector 0
[ 1798.155229] __ratelimit: 3 callbacks suppressed
[ 1798.155233] Buffer I/O error on device sdd, logical block 0
[ 1798.155243] Buffer I/O error on device sdd, logical block 1
[ 1798.155248] Buffer I/O error on device sdd, logical block 2
[ 1798.155252] Buffer I/O error on device sdd, logical block 3
[ 1798.155257] Buffer I/O error on device sdd, logical block 4
[ 1798.155262] Buffer I/O error on device sdd, logical block 5
[ 1798.155267] Buffer I/O error on device sdd, logical block 6
[ 1798.155271] Buffer I/O error on device sdd, logical block 7
[ 1798.155276] Buffer I/O error on device sdd, logical block 8
[ 1798.155281] Buffer I/O error on device sdd, logical block 9
[ 1815.704057] sd 8:0:0:0: [sdd] Unhandled sense code
[ 1815.704062] sd 8:0:0:0: [sdd] Result: hostbyte=DID_ERROR driverbyte=DRIVER_SENSE
[ 1815.704067] sd 8:0:0:0: [sdd] Sense Key : Hardware Error [current] 
[ 1815.704073] sd 8:0:0:0: [sdd] Add. Sense: No additional sense information
[ 1815.704078] end_request: I/O error, dev sdd, sector 0
[ 1815.704083] __ratelimit: 20 callbacks suppressed
[ 1815.704086] Buffer I/O error on device sdd, logical block 0
[ 1815.704094] Buffer I/O error on device sdd, logical block 1
[ 1815.704098] Buffer I/O error on device sdd, logical block 2
[ 1815.704101] Buffer I/O error on device sdd, logical block 3
[ 1815.704105] Buffer I/O error on device sdd, logical block 4
[ 1815.704108] Buffer I/O error on device sdd, logical block 5
[ 1815.704111] Buffer I/O error on device sdd, logical block 6
[ 1815.704114] Buffer I/O error on device sdd, logical block 7
[ 1815.704118] Buffer I/O error on device sdd, logical block 8
[ 1815.704121] Buffer I/O error on device sdd, logical block 9
[ 1930.433455] sd 8:0:0:0: [sdd] Unhandled sense code
[ 1930.433460] sd 8:0:0:0: [sdd] Result: hostbyte=DID_ERROR driverbyte=DRIVER_SENSE
[ 1930.433465] sd 8:0:0:0: [sdd] Sense Key : Hardware Error [current] 
[ 1930.433470] sd 8:0:0:0: [sdd] Add. Sense: No additional sense information
[ 1930.433475] end_request: I/O error, dev sdd, sector 120