dmesg | tail after plugging the external HDD

[ 1030.124857] hub 3-0:1.0: unable to enumerate USB device on port 4
[ 1150.767435] usb 3-4: new high-speed USB device number 16 using xhci_hcd
[ 1150.785805] usb 3-4: Device not responding to set address.
[ 1151.019882] usb 3-4: device descriptor read/8, error -71
[ 1151.241778] usb 3-4: unable to read config index 0 descriptor/start: -32
[ 1151.241797] usb 3-4: chopping to 0 config(s)
[ 1151.284049] usb 3-4: string descriptor 0 read error: -71
[ 1151.284071] usb 3-4: New USB device found, idVendor=059b, idProduct=0673
[ 1151.284073] usb 3-4: New USB device strings: Mfr=10, Product=11, SerialNumber=3
[ 1151.284202] usb 3-4: no configuration chosen from 0 choices

---
cat /var/log/dmesg | grep "sd"

[    1.502794] sd 0:0:0:0: [sda] 1953525168 512-byte logical blocks: (1.00 TB/931 GiB)
[    1.502800] sd 0:0:0:0: Attached scsi generic sg0 type 0
[    1.502920] sd 0:0:0:0: [sda] Write Protect is off
[    1.502923] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    1.503030] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[    1.561288]  sda: sda1 sda2 sda3 sda4 sda5 sda6 sda7 sda8 sda9 sda10 sda11
[    1.562074] sd 0:0:0:0: [sda] Attached SCSI disk
[    3.955462] EXT4-fs (sda9): mounted filesystem with ordered data mode. Opts: (null)
[   29.506785] Adding 1000444k swap on /dev/sda8.  Priority:-1 extents:1 across:1000444k FS
[   33.299697] sd 6:0:0:0: Attached scsi generic sg2 type 0
[   33.364413] sd 6:0:0:0: [sdb] Attached SCSI removable disk
[   34.211136] EXT4-fs (sda9): re-mounted. Opts: errors=remount-ro
[   36.319533] EXT4-fs (sda10): mounted filesystem with ordered data mode. Opts: (null)

---
what I think is relevant output from dmesg

[ 1027.979142] usb 3-4: USB disconnect, device number 11
[ 1027.987151] sd 10:0:0:0: [sdc] READ CAPACITY failed
[ 1027.987155] sd 10:0:0:0: [sdc]  
[ 1027.987157] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[ 1027.987158] sd 10:0:0:0: [sdc] Sense not available.
[ 1027.987207] sd 10:0:0:0: [sdc] Write Protect is off
[ 1027.987211] sd 10:0:0:0: [sdc] Mode Sense: 2e 2e 2f 2e
[ 1027.987259] sd 10:0:0:0: [sdc] Asking for cache data failed
[ 1027.987263] sd 10:0:0:0: [sdc] Assuming drive cache: write through
[ 1027.987693] sd 10:0:0:0: [sdc] READ CAPACITY failed
[ 1027.987697] sd 10:0:0:0: [sdc]  
[ 1027.987698] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[ 1027.987700] sd 10:0:0:0: [sdc] Sense not available.
[ 1027.987742] sd 10:0:0:0: [sdc] Asking for cache data failed
[ 1027.987745] sd 10:0:0:0: [sdc] Assuming drive cache: write through
[ 1027.987747] sd 10:0:0:0: [sdc] Attached SCSI disk
[ 1027.988145] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff88008ce94200
[ 1027.988149] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff88008ce94240
[ 1028.155174] usb 3-4: new high-speed USB device number 12 using xhci_hcd
[ 1028.155281] usb 3-4: Device not responding to set address.
[ 1028.359390] usb 3-4: Device not responding to set address.
[ 1028.563463] usb 3-4: device not accepting address 12, error -71
[ 1028.675617] usb 3-4: new high-speed USB device number 13 using xhci_hcd
[ 1028.675740] usb 3-4: Device not responding to set address.
[ 1028.879834] usb 3-4: Device not responding to set address.
[ 1029.083905] usb 3-4: device not accepting address 13, error -71
[ 1029.196069] usb 3-4: new high-speed USB device number 14 using xhci_hcd
[ 1029.196191] usb 3-4: Device not responding to set address.
[ 1029.400277] usb 3-4: Device not responding to set address.
[ 1029.604353] usb 3-4: device not accepting address 14, error -71
[ 1029.716499] usb 3-4: new high-speed USB device number 15 using xhci_hcd
[ 1029.716606] usb 3-4: Device not responding to set address.
[ 1029.920716] usb 3-4: Device not responding to set address.
[ 1030.124792] usb 3-4: device not accepting address 15, error -71
[ 1030.124857] hub 3-0:1.0: unable to enumerate USB device on port 4
[ 1150.767435] usb 3-4: new high-speed USB device number 16 using xhci_hcd
[ 1150.785805] usb 3-4: Device not responding to set address.
[ 1151.019882] usb 3-4: device descriptor read/8, error -71
[ 1151.241778] usb 3-4: unable to read config index 0 descriptor/start: -32
[ 1151.241797] usb 3-4: chopping to 0 config(s)
[ 1151.284049] usb 3-4: string descriptor 0 read error: -71
[ 1151.284071] usb 3-4: New USB device found, idVendor=059b, idProduct=0673
[ 1151.284073] usb 3-4: New USB device strings: Mfr=10, Product=11, SerialNumber=3
[ 1151.284202] usb 3-4: no configuration chosen from 0 choices