This happens every time i connect Lc Power LC-25U3-7W (it has asmedia 1053e chip inside) external enclosure with Seagate ST500LT0 12-9WS142 disk inside. Everything works perfectly when connected to USB 2.0 port but when its connected to usb 3.0 i get repeated i/o errors continuous mounting and than unmounting with the message to use windows to check the drive etc (i used another windows computer to run chkdsk on it). On Windows the drive works perfectly under usb 3.0 also. this is the lsusb output when the drive is connected to usb 2.0: Bus 003 Device 011: ID 174c:55aa ASMedia Technology Inc. ASM1051E SATA 6Gb/s bridge, ASM1053E SATA 6Gb/s bridge, ASM1153 SATA 3Gb/s bridge Couldn't open device, some information will be missing Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.10 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x174c ASMedia Technology Inc. idProduct 0x55aa ASM1051E SATA 6Gb/s bridge, ASM1053E SATA 6Gb/s bridge, ASM1153 SATA 3Gb/s bridge bcdDevice 1.00 iManufacturer 2 iProduct 3 iSerial 1 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 85 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xc0 Self Powered MaxPower 0mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 8 Mass Storage bInterfaceSubClass 6 SCSI bInterfaceProtocol 80 Bulk-Only iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x02 EP 2 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 1 bNumEndpoints 4 bInterfaceClass 8 Mass Storage bInterfaceSubClass 6 SCSI bInterfaceProtocol 98 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Data-in pipe (0x03) Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x02 EP 2 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Data-out pipe (0x04) Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Status pipe (0x02) Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x04 EP 4 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Command pipe (0x01) when i connect it to usb 3.0 port it shows under lsusb for a brief second and than its not listed at all. This is how it is reported for that brief momment in time: Bus 003 Device 007: ID 0c45:64ad Microdia Bus 003 Device 005: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller Bus 003 Device 009: ID 0cf3:0036 Atheros Communications, Inc. Bus 003 Device 008: ID 046d:c531 Logitech, Inc. Bus 003 Device 006: ID 24ae:2000 Bus 003 Device 003: ID 1a40:0101 Terminus Technology Inc. Hub Bus 003 Device 002: ID 8087:8000 Intel Corp. Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 044: ID 174c:55aa ASMedia Technology Inc. ASM1051E SATA 6Gb/s bridge, ASM1053E SATA 6Gb/s bridge, ASM1153 SATA 3Gb/s bridge Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub dmesg output when connected to usb 3.0: [ 3418.109784] usb 2-2: new SuperSpeed USB device number 49 using xhci_hcd [ 3418.126661] usb 2-2: New USB device found, idVendor=174c, idProduct=55aa [ 3418.126669] usb 2-2: New USB device strings: Mfr=2, Product=3, SerialNumber=1 [ 3418.126674] usb 2-2: Product: USB3.0 External HDD [ 3418.126677] usb 2-2: Manufacturer: GODO [ 3418.126681] usb 2-2: SerialNumber: 20140100000C [ 3418.129035] scsi host51: uas [ 3418.130828] scsi 51:0:0:0: Direct-Access ST500LT0 12-9WS142 0 PQ: 0 ANSI: 6 [ 3418.131773] sd 51:0:0:0: [sdb] 976773168 512-byte logical blocks: (500 GB/465 GiB) [ 3418.131783] sd 51:0:0:0: [sdb] 4096-byte physical blocks [ 3418.131801] sd 51:0:0:0: Attached scsi generic sg2 type 0 [ 3418.132152] sd 51:0:0:0: [sdb] Write Protect is off [ 3418.132159] sd 51:0:0:0: [sdb] Mode Sense: 43 00 00 00 [ 3418.132309] sd 51:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 3418.155897] sdb: sdb1 sdb4 [ 3418.156819] sd 51:0:0:0: [sdb] Attached SCSI disk [ 3418.934579] sd 51:0:0:0: [sdb] tag#5 data cmplt err -71 uas-tag 6 inflight: CMD [ 3418.934587] sd 51:0:0:0: [sdb] tag#5 CDB: Read(10) 28 00 12 4f 88 80 00 01 80 00 [ 3418.937862] xhci_hcd 0000:00:14.0: ERROR Transfer event for disabled endpoint or incorrect stream ring [ 3418.937865] xhci_hcd 0000:00:14.0: @0000000251394f70 00000000 00000000 04000000 18038001 [ 3419.924767] usb 2-2: USB disconnect, device number 49 [ 3419.924961] sd 51:0:0:0: [sdb] tag#1 data cmplt err -108 uas-tag 2 inflight: CMD [ 3419.924971] sd 51:0:0:0: [sdb] tag#1 CDB: Read(10) 28 00 00 00 08 10 00 00 08 00 [ 3419.924983] sd 51:0:0:0: [sdb] tag#4 data cmplt err -108 uas-tag 5 inflight: CMD [ 3419.924988] sd 51:0:0:0: [sdb] tag#4 CDB: Read(10) 28 00 00 00 08 80 00 01 80 00 [ 3419.924995] sd 51:0:0:0: [sdb] tag#0 data cmplt err -108 uas-tag 1 inflight: CMD [ 3419.924999] sd 51:0:0:0: [sdb] tag#0 CDB: Read(10) 28 00 12 4f 88 10 00 00 08 00 [ 3419.925052] usb 2-2: stat urb: status -108 [ 3419.925061] usb 2-2: stat urb: status -108 [ 3419.925067] usb 2-2: stat urb: status -108 [ 3419.925073] usb 2-2: stat urb: status -108 [ 3419.925105] sd 51:0:0:0: [sdb] tag#0 uas_zap_pending 0 uas-tag 1 inflight: CMD [ 3419.925123] sd 51:0:0:0: [sdb] tag#0 CDB: Read(10) 28 00 12 4f 88 10 00 00 08 00 [ 3419.925144] sd 51:0:0:0: [sdb] tag#1 uas_zap_pending 0 uas-tag 2 inflight: CMD [ 3419.925150] sd 51:0:0:0: [sdb] tag#1 CDB: Read(10) 28 00 00 00 08 10 00 00 08 00 [ 3419.925158] sd 51:0:0:0: [sdb] tag#4 uas_zap_pending 0 uas-tag 5 inflight: CMD [ 3419.925164] sd 51:0:0:0: [sdb] tag#4 CDB: Read(10) 28 00 00 00 08 80 00 01 80 00 [ 3419.925173] sd 51:0:0:0: [sdb] tag#5 uas_zap_pending 0 uas-tag 6 inflight: CMD [ 3419.925180] sd 51:0:0:0: [sdb] tag#5 CDB: Read(10) 28 00 12 4f 88 80 00 01 80 00 [ 3419.925266] sd 51:0:0:0: [sdb] tag#0 FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 3419.925273] sd 51:0:0:0: [sdb] tag#0 CDB: Read(10) 28 00 12 4f 88 10 00 00 08 00 [ 3419.925280] blk_update_request: I/O error, dev sdb, sector 307202064 [ 3419.925316] sd 51:0:0:0: [sdb] tag#1 FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 3419.925325] sd 51:0:0:0: [sdb] tag#1 CDB: Read(10) 28 00 00 00 08 10 00 00 08 00 [ 3419.925330] blk_update_request: I/O error, dev sdb, sector 2064 [ 3419.925351] sd 51:0:0:0: [sdb] tag#4 FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 3419.925358] sd 51:0:0:0: [sdb] tag#4 CDB: Read(10) 28 00 00 00 08 80 00 01 80 00 [ 3419.925362] blk_update_request: I/O error, dev sdb, sector 2176 [ 3419.925390] sd 51:0:0:0: [sdb] tag#5 FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 3419.925398] sd 51:0:0:0: [sdb] tag#5 CDB: Read(10) 28 00 12 4f 88 80 00 01 80 00 [ 3419.925402] blk_update_request: I/O error, dev sdb, sector 307202176 [ 3419.965247] sd 51:0:0:0: [sdb] Synchronizing SCSI cache [ 3420.084660] sd 51:0:0:0: [sdb] Synchronize Cache(10) failed: Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK [ 3420.340597] usb 2-2: new SuperSpeed USB device number 50 using xhci_hcd [ 3420.357224] usb 2-2: New USB device found, idVendor=174c, idProduct=55aa [ 3420.357230] usb 2-2: New USB device strings: Mfr=2, Product=3, SerialNumber=1 [ 3420.357233] usb 2-2: Product: USB3.0 External HDD [ 3420.357235] usb 2-2: Manufacturer: GODO [ 3420.357237] usb 2-2: SerialNumber: 20140100000C [ 3420.359161] scsi host52: uas [ 3420.363576] scsi 52:0:0:0: Direct-Access ST500LT0 12-9WS142 0 PQ: 0 ANSI: 6 [ 3420.364341] sd 52:0:0:0: Attached scsi generic sg2 type 0 [ 3420.364354] sd 52:0:0:0: [sdb] 976773168 512-byte logical blocks: (500 GB/465 GiB) [ 3420.364360] sd 52:0:0:0: [sdb] 4096-byte physical blocks [ 3420.364727] sd 52:0:0:0: [sdb] Write Protect is off [ 3420.364732] sd 52:0:0:0: [sdb] Mode Sense: 43 00 00 00 [ 3420.364891] sd 52:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 3420.421484] sdb: sdb1 sdb4 [ 3420.422516] sd 52:0:0:0: [sdb] Attached SCSI disk [ 3421.539917] usb 2-2: USB disconnect, device number 50 [ 3421.540133] sd 52:0:0:0: [sdb] tag#0 data cmplt err -108 uas-tag 1 inflight: CMD [ 3421.540144] sd 52:0:0:0: [sdb] tag#0 CDB: Read(10) 28 00 00 00 0b 20 00 00 08 00 [ 3421.540155] sd 52:0:0:0: [sdb] tag#1 data cmplt err -108 uas-tag 2 inflight: CMD [ 3421.540160] sd 52:0:0:0: [sdb] tag#1 CDB: Read(10) 28 00 12 4f 8b c8 00 00 08 00 [ 3421.540220] usb 2-2: stat urb: status -108 [ 3421.540230] usb 2-2: stat urb: status -108 [ 3421.540268] sd 52:0:0:0: [sdb] tag#0 uas_zap_pending 0 uas-tag 1 inflight: CMD [ 3421.540295] sd 52:0:0:0: [sdb] tag#0 CDB: Read(10) 28 00 00 00 0b 20 00 00 08 00 [ 3421.540318] sd 52:0:0:0: [sdb] tag#1 uas_zap_pending 0 uas-tag 2 inflight: CMD [ 3421.540325] sd 52:0:0:0: [sdb] tag#1 CDB: Read(10) 28 00 12 4f 8b c8 00 00 08 00 [ 3421.540403] sd 52:0:0:0: [sdb] tag#0 FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 3421.540411] sd 52:0:0:0: [sdb] tag#0 CDB: Read(10) 28 00 00 00 0b 20 00 00 08 00 [ 3421.540418] blk_update_request: I/O error, dev sdb, sector 2848 [ 3421.540456] sd 52:0:0:0: [sdb] tag#1 FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 3421.540465] sd 52:0:0:0: [sdb] tag#1 CDB: Read(10) 28 00 12 4f 8b c8 00 00 08 00 [ 3421.540471] blk_update_request: I/O error, dev sdb, sector 307203016 [ 3421.588438] sd 52:0:0:0: [sdb] Synchronizing SCSI cache [ 3421.711802] sd 52:0:0:0: [sdb] Synchronize Cache(10) failed: Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK [ 3421.967710] usb 2-2: new SuperSpeed USB device number 51 using xhci_hcd [ 3421.984306] usb 2-2: New USB device found, idVendor=174c, idProduct=55aa [ 3421.984310] usb 2-2: New USB device strings: Mfr=2, Product=3, SerialNumber=1 [ 3421.984311] usb 2-2: Product: USB3.0 External HDD [ 3421.984313] usb 2-2: Manufacturer: GODO [ 3421.984314] usb 2-2: SerialNumber: 20140100000C [ 3421.985931] scsi host53: uas [ 3421.990265] scsi 53:0:0:0: Direct-Access ST500LT0 12-9WS142 0 PQ: 0 ANSI: 6 [ 3421.990697] sd 53:0:0:0: Attached scsi generic sg2 type 0 [ 3421.990775] sd 53:0:0:0: [sdb] 976773168 512-byte logical blocks: (500 GB/465 GiB) [ 3421.990776] sd 53:0:0:0: [sdb] 4096-byte physical blocks [ 3421.991049] sd 53:0:0:0: [sdb] Write Protect is off [ 3421.991051] sd 53:0:0:0: [sdb] Mode Sense: 43 00 00 00 [ 3421.991209] sd 53:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 3422.051730] sdb: sdb1 sdb4 [ 3422.052809] sd 53:0:0:0: [sdb] Attached SCSI disk [ 3424.038554] usb 2-2: USB disconnect, device number 51 [ 3424.038640] sd 53:0:0:0: [sdb] tag#1 data cmplt err -108 uas-tag 2 inflight: CMD [ 3424.038644] sd 53:0:0:0: [sdb] tag#1 CDB: Read(10) 28 00 12 b5 42 b8 00 00 08 00 [ 3424.038648] sd 53:0:0:0: [sdb] tag#0 data cmplt err -108 uas-tag 1 inflight: CMD [ 3424.038649] sd 53:0:0:0: [sdb] tag#0 CDB: Read(10) 28 00 01 86 c3 b0 00 01 00 00 [ 3424.038681] usb 2-2: stat urb: status -108 [ 3424.038683] usb 2-2: stat urb: status -108 [ 3424.038691] sd 53:0:0:0: [sdb] tag#0 uas_zap_pending 0 uas-tag 1 inflight: CMD [ 3424.038695] sd 53:0:0:0: [sdb] tag#0 CDB: Read(10) 28 00 01 86 c3 b0 00 01 00 00 [ 3424.038705] sd 53:0:0:0: [sdb] tag#1 uas_zap_pending 0 uas-tag 2 inflight: CMD [ 3424.038709] sd 53:0:0:0: [sdb] tag#1 CDB: Read(10) 28 00 12 b5 42 b8 00 00 08 00 [ 3424.038736] sd 53:0:0:0: [sdb] tag#0 FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 3424.038741] sd 53:0:0:0: [sdb] tag#0 CDB: Read(10) 28 00 01 86 c3 b0 00 01 00 00 [ 3424.038746] blk_update_request: I/O error, dev sdb, sector 25609136 [ 3424.038768] sd 53:0:0:0: [sdb] tag#1 FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 3424.038771] sd 53:0:0:0: [sdb] tag#1 CDB: Read(10) 28 00 12 b5 42 b8 00 00 08 00 [ 3424.038774] blk_update_request: I/O error, dev sdb, sector 313868984 [ 3424.038969] blk_update_request: I/O error, dev sdb, sector 0 [ 3424.043259] blk_update_request: I/O error, dev sdb, sector 0 [ 3424.075727] sd 53:0:0:0: [sdb] Synchronizing SCSI cache [ 3424.194439] sd 53:0:0:0: [sdb] Synchronize Cache(10) failed: Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK [ 3424.450371] usb 2-2: new SuperSpeed USB device number 52 using xhci_hcd [ 3424.467090] usb 2-2: New USB device found, idVendor=174c, idProduct=55aa [ 3424.467094] usb 2-2: New USB device strings: Mfr=2, Product=3, SerialNumber=1 [ 3424.467095] usb 2-2: Product: USB3.0 External HDD [ 3424.467096] usb 2-2: Manufacturer: GODO [ 3424.467098] usb 2-2: SerialNumber: 20140100000C [ 3424.468706] scsi host54: uas [ 3424.473044] scsi 54:0:0:0: Direct-Access ST500LT0 12-9WS142 0 PQ: 0 ANSI: 6 [ 3424.474383] sd 54:0:0:0: Attached scsi generic sg2 type 0 [ 3424.477624] sd 54:0:0:0: [sdb] 976773168 512-byte logical blocks: (500 GB/465 GiB) [ 3424.477627] sd 54:0:0:0: [sdb] 4096-byte physical blocks [ 3424.477891] sd 54:0:0:0: [sdb] Write Protect is off [ 3424.477894] sd 54:0:0:0: [sdb] Mode Sense: 43 00 00 00 [ 3424.478061] sd 54:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 3424.535271] sdb: sdb1 sdb4 [ 3424.536249] sd 54:0:0:0: [sdb] Attached SCSI disk [ 3426.638019] sd 54:0:0:0: [sdb] tag#2 data cmplt err -71 uas-tag 3 inflight: CMD [ 3426.638024] sd 54:0:0:0: [sdb] tag#2 CDB: Read(10) 28 00 13 1c 26 e0 00 01 00 00 [ 3426.641368] xhci_hcd 0000:00:14.0: ERROR Transfer event for disabled endpoint or incorrect stream ring [ 3426.641372] xhci_hcd 0000:00:14.0: @0000000251394a10 00000000 00000000 04000000 1b038001 [ 3433.393594] usb 2-2: USB disconnect, device number 52 [ 3433.393677] sd 54:0:0:0: [sdb] tag#0 data cmplt err -108 uas-tag 1 inflight: CMD [ 3433.393681] sd 54:0:0:0: [sdb] tag#0 CDB: Read(10) 28 00 00 4d 81 20 00 01 00 00 [ 3433.393685] sd 54:0:0:0: [sdb] tag#3 data cmplt err -108 uas-tag 4 inflight: CMD [ 3433.393686] sd 54:0:0:0: [sdb] tag#3 CDB: Read(10) 28 00 00 4d 82 20 00 01 00 00 [ 3433.393689] sd 54:0:0:0: [sdb] tag#1 data cmplt err -108 uas-tag 2 inflight: CMD [ 3433.393690] sd 54:0:0:0: [sdb] tag#1 CDB: Read(10) 28 00 13 1c 27 e0 00 01 00 00 [ 3433.393723] usb 2-2: stat urb: status -108 [ 3433.393726] usb 2-2: stat urb: status -108 [ 3433.393727] usb 2-2: stat urb: status -108 [ 3433.393729] usb 2-2: stat urb: status -108 [ 3433.393737] sd 54:0:0:0: [sdb] tag#0 uas_zap_pending 0 uas-tag 1 inflight: CMD [ 3433.393741] sd 54:0:0:0: [sdb] tag#0 CDB: Read(10) 28 00 00 4d 81 20 00 01 00 00 [ 3433.393751] sd 54:0:0:0: [sdb] tag#1 uas_zap_pending 0 uas-tag 2 inflight: CMD [ 3433.393756] sd 54:0:0:0: [sdb] tag#1 CDB: Read(10) 28 00 13 1c 27 e0 00 01 00 00 [ 3433.393759] sd 54:0:0:0: [sdb] tag#2 uas_zap_pending 0 uas-tag 3 inflight: CMD [ 3433.393761] sd 54:0:0:0: [sdb] tag#2 CDB: Read(10) 28 00 13 1c 26 e0 00 01 00 00 [ 3433.393764] sd 54:0:0:0: [sdb] tag#3 uas_zap_pending 0 uas-tag 4 inflight: CMD [ 3433.393766] sd 54:0:0:0: [sdb] tag#3 CDB: Read(10) 28 00 00 4d 82 20 00 01 00 00 [ 3433.393814] sd 54:0:0:0: [sdb] tag#0 FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 3433.393817] sd 54:0:0:0: [sdb] tag#0 CDB: Read(10) 28 00 00 4d 81 20 00 01 00 00 [ 3433.393820] blk_update_request: I/O error, dev sdb, sector 5079328 [ 3433.393843] sd 54:0:0:0: [sdb] tag#1 FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 3433.393845] sd 54:0:0:0: [sdb] tag#1 CDB: Read(10) 28 00 13 1c 27 e0 00 01 00 00 [ 3433.393847] blk_update_request: I/O error, dev sdb, sector 320612320 [ 3433.393857] sd 54:0:0:0: [sdb] tag#2 FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 3433.393860] sd 54:0:0:0: [sdb] tag#2 CDB: Read(10) 28 00 13 1c 26 e0 00 01 00 00 [ 3433.393862] blk_update_request: I/O error, dev sdb, sector 320612064 [ 3433.393875] sd 54:0:0:0: [sdb] tag#3 FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 3433.393878] sd 54:0:0:0: [sdb] tag#3 CDB: Read(10) 28 00 00 4d 82 20 00 01 00 00 [ 3433.393879] blk_update_request: I/O error, dev sdb, sector 5079584 [ 3433.394090] blk_update_request: I/O error, dev sdb, sector 0 [ 3433.394216] blk_update_request: I/O error, dev sdb, sector 0 [ 3433.394959] sd 54:0:0:0: [sdb] Synchronizing SCSI cache [ 3433.513523] sd 54:0:0:0: [sdb] Synchronize Cache(10) failed: Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK [ 3433.777475] usb 2-2: new SuperSpeed USB device number 53 using xhci_hcd [ 3433.794114] usb 2-2: New USB device found, idVendor=174c, idProduct=55aa [ 3433.794120] usb 2-2: New USB device strings: Mfr=2, Product=3, SerialNumber=1 [ 3433.794123] usb 2-2: Product: USB3.0 External HDD [ 3433.794125] usb 2-2: Manufacturer: GODO [ 3433.794127] usb 2-2: SerialNumber: 20140100000C [ 3433.796001] scsi host55: uas [ 3433.800360] scsi 55:0:0:0: Direct-Access ST500LT0 12-9WS142 0 PQ: 0 ANSI: 6 [ 3433.800974] sd 55:0:0:0: Attached scsi generic sg2 type 0 [ 3433.800994] sd 55:0:0:0: [sdb] 976773168 512-byte logical blocks: (500 GB/465 GiB) [ 3433.800999] sd 55:0:0:0: [sdb] 4096-byte physical blocks [ 3433.801965] sd 55:0:0:0: [sdb] Write Protect is off [ 3433.801970] sd 55:0:0:0: [sdb] Mode Sense: 43 00 00 00 [ 3433.802256] sd 55:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 3433.862085] sdb: sdb1 sdb4 [ 3433.863146] sd 55:0:0:0: [sdb] Attached SCSI disk [ 3435.052749] usb 2-2: USB disconnect, device number 53 [ 3435.052967] sd 55:0:0:0: [sdb] tag#1 data cmplt err -108 uas-tag 2 inflight: CMD [ 3435.052978] sd 55:0:0:0: [sdb] tag#1 CDB: Read(10) 28 00 00 00 0b 28 00 00 08 00 [ 3435.052990] sd 55:0:0:0: [sdb] tag#0 data cmplt err -108 uas-tag 1 inflight: CMD [ 3435.052995] sd 55:0:0:0: [sdb] tag#0 CDB: Read(10) 28 00 12 4f 8b 98 00 00 08 00 [ 3435.053062] usb 2-2: stat urb: status -108 [ 3435.053071] usb 2-2: stat urb: status -108 [ 3435.053108] sd 55:0:0:0: [sdb] tag#0 uas_zap_pending 0 uas-tag 1 inflight: CMD [ 3435.053128] sd 55:0:0:0: [sdb] tag#0 CDB: Read(10) 28 00 12 4f 8b 98 00 00 08 00 [ 3435.053153] sd 55:0:0:0: [sdb] tag#1 uas_zap_pending 0 uas-tag 2 inflight: CMD [ 3435.053159] sd 55:0:0:0: [sdb] tag#1 CDB: Read(10) 28 00 00 00 0b 28 00 00 08 00 [ 3435.053237] sd 55:0:0:0: [sdb] tag#0 FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 3435.053246] sd 55:0:0:0: [sdb] tag#0 CDB: Read(10) 28 00 12 4f 8b 98 00 00 08 00 [ 3435.053253] blk_update_request: I/O error, dev sdb, sector 307202968 [ 3435.053291] sd 55:0:0:0: [sdb] tag#1 FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 3435.053300] sd 55:0:0:0: [sdb] tag#1 CDB: Read(10) 28 00 00 00 0b 28 00 00 08 00 [ 3435.053306] blk_update_request: I/O error, dev sdb, sector 2856 [ 3435.097175] sd 55:0:0:0: [sdb] Synchronizing SCSI cache -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at 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