I noticed the same behavior. Not on an USB hdd, but on an USB ram:

This is an INTENSO USB 2 ALU LINE 64 GB USB stick:

[ 1032.600762] usb 1-11.4: new high-speed USB device number 15 using xhci_hcd
[ 1032.626487] hub 1-11:1.0: hub_ext_port_status failed (err = -71)
[ 1032.629487] usb 1-11-port4: cannot reset (err = -71)
[ 1032.632491] usb 1-11-port4: cannot reset (err = -71)
[ 1032.635486] usb 1-11-port4: cannot reset (err = -71)
[ 1032.638482] usb 1-11-port4: cannot reset (err = -71)
[ 1032.638483] usb 1-11-port4: Cannot enable. Maybe the USB cable is bad?

The stick is ok plugged in on another port:
[ 1465.770379] usb 1-11.4: USB disconnect, device number 23
[ 1708.302214] usb 1-2: new high-speed USB device number 24 using xhci_hcd
[ 1708.471933] usb 1-2: New USB device found, idVendor=058f, idProduct=6387, bcdDevice= 1.ff
[ 1708.471938] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1708.471940] usb 1-2: Product: Intenso Alu Line
[ 1708.471943] usb 1-2: Manufacturer: 6989
[ 1708.471945] usb 1-2: SerialNumber: 21F84CE8
[ 1708.479111] usb-storage 1-2:1.0: USB Mass Storage device detected

re-plugged in on 1-11-port4:
[ 1776.661289] usb 1-11.4: new high-speed USB device number 25 using xhci_hcd
[ 1776.810678] usb 1-11.4: New USB device found, idVendor=058f, idProduct=6387, bcdDevice= 1.ff
[ 1776.810684] usb 1-11.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1776.810687] usb 1-11.4: Product: Intenso Alu Line
[ 1776.810691] usb 1-11.4: Manufacturer: 6989
[ 1776.810694] usb 1-11.4: SerialNumber: 21F84CE8
[ 1776.817710] usb-storage 1-11.4:1.0: USB Mass Storage device detected


That leads me to the assumption that the xhci host is unstable, at least in combination with my controller:


[    1.325164] xhci_hcd 0000:03:00.0: hcc params 0x0200ef81 hci version 0x110 quirks 0x0000000008000410
[    1.325319] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.02
[    1.325321] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    1.325322] usb usb1: Product: xHCI Host Controller
[    1.325323] usb usb1: Manufacturer: Linux 5.2.9-arch1-1-ARCH xhci-hcd
[    1.325323] usb usb1: SerialNumber: 0000:03:00.0
[    1.325428] hub 1-0:1.0: USB hub found
[    1.325443] hub 1-0:1.0: 14 ports detected
[    1.325922] xhci_hcd 0000:03:00.0: xHCI Host Controller
[    1.325925] xhci_hcd 0000:03:00.0: new USB bus registered, assigned bus number 2
[    1.325927] xhci_hcd 0000:03:00.0: Host supports USB 3.1 Enhanced SuperSpeed
[    1.325958] usb usb2: We don't know the algorithms for LPM for this host, disabling LPM.
[    1.325974] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 5.02
[    1.325976] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    1.325977] usb usb2: Product: xHCI Host Controller
[    1.325978] usb usb2: Manufacturer: Linux 5.2.9-arch1-1-ARCH xhci-hcd
[    1.325979] usb usb2: SerialNumber: 0000:03:00.0
[    1.326046] hub 2-0:1.0: USB hub found
[    1.326057] hub 2-0:1.0: 8 ports detected
[    1.326289] usb: port power management may be unreliable
[    1.326451] xhci_hcd 0000:25:00.0: xHCI Host Controller
[    1.326454] xhci_hcd 0000:25:00.0: new USB bus registered, assigned bus number 3
[    1.381302] xhci_hcd 0000:25:00.0: hcc params 0x0200ef81 hci version 0x110 quirks 0x0000000000000010
[    1.381657] usb usb3: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.02
[    1.381658] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    1.381658] usb usb3: Product: xHCI Host Controller
[    1.381659] usb usb3: Manufacturer: Linux 5.2.9-arch1-1-ARCH xhci-hcd
[    1.381660] usb usb3: SerialNumber: 0000:25:00.0
[    1.381737] hub 3-0:1.0: USB hub found
[    1.381744] hub 3-0:1.0: 2 ports detected
[    1.381830] xhci_hcd 0000:25:00.0: xHCI Host Controller
[    1.381832] xhci_hcd 0000:25:00.0: new USB bus registered, assigned bus number 4
[    1.381834] xhci_hcd 0000:25:00.0: Host supports USB 3.0 SuperSpeed
[    1.381863] usb usb4: We don't know the algorithms for LPM for this host, disabling LPM.
[    1.381878] usb usb4: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 5.02
[    1.381880] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    1.381880] usb usb4: Product: xHCI Host Controller
[    1.381881] usb usb4: Manufacturer: Linux 5.2.9-arch1-1-ARCH xhci-hcd
[    1.381882] usb usb4: SerialNumber: 0000:25:00.0
[    1.381941] hub 4-0:1.0: USB hub found
[    1.381947] hub 4-0:1.0: 2 ports detected
[    1.382075] xhci_hcd 0000:27:00.3: xHCI Host Controller
[    1.382077] xhci_hcd 0000:27:00.3: new USB bus registered, assigned bus number 5
[    1.382170] xhci_hcd 0000:27:00.3: hcc params 0x0270f665 hci version 0x100 quirks 0x0000000000000410
[    1.382268] usb usb5: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.02
[    1.382269] usb usb5: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    1.382270] usb usb5: Product: xHCI Host Controller
[    1.382271] usb usb5: Manufacturer: Linux 5.2.9-arch1-1-ARCH xhci-hcd
[    1.382272] usb usb5: SerialNumber: 0000:27:00.3
[    1.382335] hub 5-0:1.0: USB hub found
[    1.382341] hub 5-0:1.0: 4 ports detected
[    1.382498] xhci_hcd 0000:27:00.3: xHCI Host Controller
[    1.382500] xhci_hcd 0000:27:00.3: new USB bus registered, assigned bus number 6
[    1.382501] xhci_hcd 0000:27:00.3: Host supports USB 3.0 SuperSpeed
[    1.382512] usb usb6: We don't know the algorithms for LPM for this host, disabling LPM.
[    1.382527] usb usb6: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 5.02
[    1.382528] usb usb6: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    1.382529] usb usb6: Product: xHCI Host Controller
[    1.382530] usb usb6: Manufacturer: Linux 5.2.9-arch1-1-ARCH xhci-hcd
[    1.382531] usb usb6: SerialNumber: 0000:27:00.3