Problem with USB 3 port

From	Mick Ab <recoverymail123890@gmail.com>
Newsgroups	linux.debian.user
Subject	Problem with USB 3 port
Date	2020-08-19 12:40 +0200
Message-ID	<AFtFE-1IH-13@gated-at.bofh.it> (permalink)
References	<AFtFE-1IH-15@gated-at.bofh.it> <AFtFE-1IH-17@gated-at.bofh.it> <AFtFE-1IH-19@gated-at.bofh.it>
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There have been problems recently in trying to use the USB 3 port on a
desktop running Debian.

The kernel doesn't recognise either a new portable hard drive or a new
flash drive when each have, in turn, be plugged into that port. Neither
device shows up with fdisk  -l, lsusb or lsblk commands.

Now the following has been done :-

(1) The new flash drive was unplugged from the port

(2) As root, the following command was run :

dmesg  |  tail

The output was as follows :

[3974120.938338] usb 1-1: new high-speed USB device number 66 using xhci_hcd
[3974126.430777] usb 1-1: new high-speed USB device number 67 using xhci_hcd
[3974131.923271] usb 1-1: new high-speed USB device number 68 using xhci_hcd
[3974137.415713] usb 1-1: new high-speed USB device number 69 using xhci_hcd
[3974142.908184] usb 1-1: new high-speed USB device number 70 using xhci_hcd

The above sequence continued up to device number 75

(3) The flash drive was plugged back into the USB 3 port

(4) After a few seconds the following command was run as root :

dmesg  |  tail  -50

The output was as follows :

[3973945.175272] usb 1-1: new high-speed USB device number 34 using xhci_hcd
[3973950.667736] usb 1-1: new high-speed USB device number 35 using xhci_hcd
[3973956.164234] usb 1-1: new high-speed USB device number 36 using xhci_hcd
[3973961.660705] usb 1-1: new high-speed USB device number 37 using xhci_hcd
[3973967.153175] usb 1-1: new high-speed USB device number 38 using xhci_hcd
[3973972.645644] usb 1-1: new high-speed USB device number 39 using xhci_hcd
[3973978.138108] usb 1-1: new high-speed USB device number 40 using xhci_hcd

The above sequence continued until device number 83

Clearly something is wrong with the port. Can anyone say what is causing
the problem and how it can be fixed.  Thank you.

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Problem with USB 3 port Mick Ab <recoverymail123890@gmail.com> - 2020-08-19 12:40 +0200
  Re: Problem with USB 3 port Mick Ab <recoverymail123890@gmail.com> - 2020-08-19 21:00 +0200
    Re: Problem with USB 3 port deloptes <deloptes@gmail.com> - 2020-08-19 21:50 +0200

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