4.2.0-28-generic #33-Ubuntu SMP Mon Feb 1 23:09:27 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux same was happening on ubuntu 14.04 kernel 3.19. i upgraded hoping that would fix the issue, but with no luck. there was a difference thou. under 3.19 system would freeze during boot until the drive was unplugged but now i goes past boot but the problem described in the first mail persist. I disabled UAS as recommended by multiple users on different forums i now i dont get as much i/o errors but the drive still disconnects and connects indefinitely here is dmesg output with UAS disabled [71006.316821] usb 2-2: new SuperSpeed USB device number 69 using xhci_hcd [71006.333625] usb 2-2: New USB device found, idVendor=174c, idProduct=55aa [71006.333629] usb 2-2: New USB device strings: Mfr=2, Product=3, SerialNumber=1 [71006.333631] usb 2-2: Product: USB3.0 External HDD [71006.333632] usb 2-2: Manufacturer: GODO [71006.333633] usb 2-2: SerialNumber: 20140100000C [71006.334344] usb 2-2: UAS is blacklisted for this device, using usb-storage instead [71006.334348] usb-storage 2-2:1.0: USB Mass Storage device detected [71006.334430] usb-storage 2-2:1.0: Quirks match for vid 174c pid 55aa: c00000 [71006.334457] scsi host68: usb-storage 2-2:1.0 [71007.336386] scsi 68:0:0:0: Direct-Access ST500LT0 12-9WS142 0 PQ: 0 ANSI: 6 [71007.336768] sd 68:0:0:0: Attached scsi generic sg2 type 0 [71007.337839] sd 68:0:0:0: [sdb] 976773168 512-byte logical blocks: (500 GB/465 GiB) [71007.337843] sd 68:0:0:0: [sdb] 4096-byte physical blocks [71007.338040] sd 68:0:0:0: [sdb] Write Protect is off [71007.338045] sd 68:0:0:0: [sdb] Mode Sense: 43 00 00 00 [71007.338238] sd 68:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [71007.391063] sdb: sdb1 sdb4 [71007.392268] sd 68:0:0:0: [sdb] Attached SCSI disk [71007.692023] usb 2-2: USB disconnect, device number 69 [71007.692966] sd 68:0:0:0: [sdb] Synchronizing SCSI cache [71007.696185] sd 68:0:0:0: [sdb] FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [71007.696196] sd 68:0:0:0: [sdb] CDB: Read(10) 28 00 12 4f 87 80 00 00 08 00 [71007.696201] blk_update_request: I/O error, dev sdb, sector 307201920 [71007.696212] sd 68:0:0:0: [sdb] FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [71007.696221] sd 68:0:0:0: [sdb] CDB: Read(10) 28 00 3a 38 5f 80 00 00 08 00 [71007.696226] blk_update_request: I/O error, dev sdb, sector 976772992 [71007.696270] sd 68:0:0:0: [sdb] Synchronize Cache(10) failed: Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [71007.698555] buffer_io_error: 5 callbacks suppressed [71007.698564] Buffer I/O error on dev sdb4, logical block 83696368, async page read [71007.935916] usb 2-2: new SuperSpeed USB device number 70 using xhci_hcd [71007.952619] usb 2-2: New USB device found, idVendor=174c, idProduct=55aa [71007.952623] usb 2-2: New USB device strings: Mfr=2, Product=3, SerialNumber=1 [71007.952625] usb 2-2: Product: USB3.0 External HDD [71007.952626] usb 2-2: Manufacturer: GODO [71007.952627] usb 2-2: SerialNumber: 20140100000C [71007.953322] usb 2-2: UAS is blacklisted for this device, using usb-storage instead [71007.953325] usb-storage 2-2:1.0: USB Mass Storage device detected [71007.953376] usb-storage 2-2:1.0: Quirks match for vid 174c pid 55aa: c00000 [71007.953393] scsi host69: usb-storage 2-2:1.0 [71008.207701] usb 2-2: USB disconnect, device number 70 [71008.447632] usb 2-2: new SuperSpeed USB device number 71 using xhci_hcd [71008.464137] usb 2-2: New USB device found, idVendor=174c, idProduct=55aa [71008.464148] usb 2-2: New USB device strings: Mfr=2, Product=3, SerialNumber=1 [71008.464155] usb 2-2: Product: USB3.0 External HDD [71008.464161] usb 2-2: Manufacturer: GODO [71008.464166] usb 2-2: SerialNumber: 20140100000C [71008.465219] usb 2-2: UAS is blacklisted for this device, using usb-storage instead [71008.465230] usb-storage 2-2:1.0: USB Mass Storage device detected [71008.469272] usb-storage 2-2:1.0: Quirks match for vid 174c pid 55aa: c00000 [71008.469332] scsi host70: usb-storage 2-2:1.0 [71009.471170] scsi 70:0:0:0: Direct-Access ST500LT0 12-9WS142 0 PQ: 0 ANSI: 6 [71009.471452] sd 70:0:0:0: Attached scsi generic sg2 type 0 [71009.471561] sd 70:0:0:0: [sdb] 976773168 512-byte logical blocks: (500 GB/465 GiB) [71009.471564] sd 70:0:0:0: [sdb] 4096-byte physical blocks [71009.471760] sd 70:0:0:0: [sdb] Write Protect is off [71009.471764] sd 70:0:0:0: [sdb] Mode Sense: 43 00 00 00 [71009.471960] sd 70:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [71009.531170] sdb: sdb1 sdb4 [71009.532293] sd 70:0:0:0: [sdb] Attached SCSI disk [71023.215381] usb 2-2: USB disconnect, device number 71 [71023.218303] sd 70:0:0:0: [sdb] Synchronizing SCSI cache [71023.218352] sd 70:0:0:0: [sdb] Synchronize Cache(10) failed: Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [71023.459308] usb 2-2: new SuperSpeed USB device number 72 using xhci_hcd [71023.475797] usb 2-2: New USB device found, idVendor=174c, idProduct=55aa [71023.475801] usb 2-2: New USB device strings: Mfr=2, Product=3, SerialNumber=1 [71023.475802] usb 2-2: Product: USB3.0 External HDD [71023.475804] usb 2-2: Manufacturer: GODO [71023.475805] usb 2-2: SerialNumber: 20140100000C [71023.476517] usb 2-2: UAS is blacklisted for this device, using usb-storage instead [71023.476520] usb-storage 2-2:1.0: USB Mass Storage device detected [71023.476604] usb-storage 2-2:1.0: Quirks match for vid 174c pid 55aa: c00000 [71023.476632] scsi host71: usb-storage 2-2:1.0 [71024.475175] scsi 71:0:0:0: Direct-Access ST500LT0 12-9WS142 0 PQ: 0 ANSI: 6 [71024.476019] sd 71:0:0:0: Attached scsi generic sg2 type 0 [71024.476027] sd 71:0:0:0: [sdb] 976773168 512-byte logical blocks: (500 GB/465 GiB) [71024.476035] sd 71:0:0:0: [sdb] 4096-byte physical blocks [71024.476300] sd 71:0:0:0: [sdb] Write Protect is off [71024.476313] sd 71:0:0:0: [sdb] Mode Sense: 43 00 00 00 [71024.476539] sd 71:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [71024.734163] sdb: sdb1 sdb4 [71024.735247] sd 71:0:0:0: [sdb] Attached SCSI disk [71062.185781] usb 2-2: USB disconnect, device number 72 [71062.193280] sd 71:0:0:0: [sdb] Synchronizing SCSI cache [71062.193354] sd 71:0:0:0: [sdb] Synchronize Cache(10) failed: Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [71062.433645] usb 2-2: new SuperSpeed USB device number 73 using xhci_hcd [71062.450205] usb 2-2: New USB device found, idVendor=174c, idProduct=55aa [71062.450208] usb 2-2: New USB device strings: Mfr=2, Product=3, SerialNumber=1 [71062.450210] usb 2-2: Product: USB3.0 External HDD [71062.450211] usb 2-2: Manufacturer: GODO [71062.450213] usb 2-2: SerialNumber: 20140100000C [71062.450931] usb 2-2: UAS is blacklisted for this device, using usb-storage instead [71062.450935] usb-storage 2-2:1.0: USB Mass Storage device detected [71062.451009] usb-storage 2-2:1.0: Quirks match for vid 174c pid 55aa: c00000 [71062.451034] scsi host72: usb-storage 2-2:1.0 [71062.845382] usb 2-2: USB disconnect, device number 73 [71063.085278] usb 2-2: new SuperSpeed USB device number 74 using xhci_hcd [71063.101972] usb 2-2: New USB device found, idVendor=174c, idProduct=55aa [71063.101976] usb 2-2: New USB device strings: Mfr=2, Product=3, SerialNumber=1 [71063.101977] usb 2-2: Product: USB3.0 External HDD [71063.101979] usb 2-2: Manufacturer: GODO [71063.101980] usb 2-2: SerialNumber: 20140100000C [71063.102693] usb 2-2: UAS is blacklisted for this device, using usb-storage instead [71063.102696] usb-storage 2-2:1.0: USB Mass Storage device detected [71063.102747] usb-storage 2-2:1.0: Quirks match for vid 174c pid 55aa: c00000 [71063.102765] scsi host73: usb-storage 2-2:1.0 [71064.100959] scsi 73:0:0:0: Direct-Access ST500LT0 12-9WS142 0 PQ: 0 ANSI: 6 [71064.101330] sd 73:0:0:0: Attached scsi generic sg2 type 0 [71064.101468] sd 73:0:0:0: [sdb] 976773168 512-byte logical blocks: (500 GB/465 GiB) [71064.101472] sd 73:0:0:0: [sdb] 4096-byte physical blocks [71064.101682] sd 73:0:0:0: [sdb] Write Protect is off [71064.101686] sd 73:0:0:0: [sdb] Mode Sense: 43 00 00 00 [71064.101890] sd 73:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [71064.357178] sdb: sdb1 sdb4 [71064.358768] sd 73:0:0:0: [sdb] Attached SCSI disk [71070.920901] usb 2-2: USB disconnect, device number 74 [71070.927581] sd 73:0:0:0: [sdb] Synchronizing SCSI cache [71070.927650] sd 73:0:0:0: [sdb] Synchronize Cache(10) failed: Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [71071.172783] usb 2-2: new SuperSpeed USB device number 75 using xhci_hcd [71071.189359] usb 2-2: New USB device found, idVendor=174c, idProduct=55aa [71071.189362] usb 2-2: New USB device strings: Mfr=2, Product=3, SerialNumber=1 [71071.189364] usb 2-2: Product: USB3.0 External HDD [71071.189365] usb 2-2: Manufacturer: GODO [71071.189366] usb 2-2: SerialNumber: 20140100000C [71071.190054] usb 2-2: UAS is blacklisted for this device, using usb-storage instead [71071.190057] usb-storage 2-2:1.0: USB Mass Storage device detected [71071.190109] usb-storage 2-2:1.0: Quirks match for vid 174c pid 55aa: c00000 [71071.190126] scsi host74: usb-storage 2-2:1.0 [71071.904350] usb 2-2: USB disconnect, device number 75 On Wed, Feb 10, 2016 at 3:28 AM, Lars Melin <larsm17@xxxxxxxxx> wrote: > On 2016-02-10 04:52, Dimitrije Muzur wrote: >> >> 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. >> > Under which linux kernel version? > -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html