Could the problem with the USB port possibly cause a problem with an attempt to reboot the system ? On 19 Aug 2020 11:30, "Mick Ab" <recoverymail123...@gmail.com> wrote:
> 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. >
