Solving USB hub failure issues without reboot

Question

There is an internal usb hub failure message storm in dmesg in my Ubuntu 16.04LTS machine.

I tried to restart udev using the following command, but it didnt solve my problem.

sudo systemctl restart udev.service

Rebooting the machine should solve the problem, i had it this error message and rebooting worked for me. But, i do not want to reboot it.

Is there a way to solve this issue without reboot my Linux machine?

[1450314.465689] hub 4-2:1.0: hub_ext_port_status failed (err = -71)
[1450314.469189] hub 4-2:1.0: hub_ext_port_status failed (err = -71)
[1450314.472697] hub 4-2:1.0: hub_ext_port_status failed (err = -71)
[1450314.476190] hub 4-2:1.0: hub_ext_port_status failed (err = -71)
[1450314.479689] hub 4-2:1.0: hub_ext_port_status failed (err = -71)
[1450314.483190] hub 4-2:1.0: hub_ext_port_status failed (err = -71)
[1450314.504190] hub 4-2:1.0: hub_ext_port_status failed (err = -71)
[1450314.507713] hub 4-2:1.0: hub_ext_port_status failed (err = -71)
[1450314.511206] hub 4-2:1.0: hub_ext_port_status failed (err = -71)

Solution

From the comments...

One of your USB devices may be causing this error message. Unplug one or more USB devices and see if the messages stop.

Update #1:

Disconnected all USB devices and connected back, warning message storming stopped.

Comments

[Boris Hamanov]

One of your USB devices may be causing this error message. Unplug one or more USB devices and see if the messages stop.

[Sam]

I was suspecting from a device and just disconnected that but didnt solve. After your message, I disconnected all devices and connected them back, and the warning message storming stopped. Thanks