USB device you connected is unrecognized


After the laptop goes to sleep (hibernation) and then re-awakened via the power button, awhile later the device driver/device fails and then I see a “unknown USB device fails (Port Reset Failed)”.

Disabling and unplugging/plugging in does not fix the problem.

Only a reboot fixes the problem.

Note that the devices attached seem to continue to operate.

I am using the drivers published as DisplayLink+USB+Graphics+Software+for+Windows+8.6+M1 and Windows 10 1809 17763.168.


Hello, thanks for posting and I am sorry to hear of this behavior! Based off of your description we’ll want to ensure that the software used by our adapter is in a good state by walking through the below DisplayLink cleaner steps:

  1. Disconnect the adapter from your system. Please keep it disconnected until the last step.
  2. Uninstall any and all software with ‘DisplayLink’ in the title that is present from within the Control Panel -> Programs and Features. Don’t worry if these entries are not present or if the process does not work, just move onto the next step
  3. Download, extract and run the DisplayLink cleaner tool, found here -->
  4. Once the Cleaner has been run, reboot (even if not prompted to)
  5. Now download and install the 8.6 M1 DisplayLink software, found here -->
  6. Reconnect the adapter to your system which will trigger the final portion of the installation

If these steps help, great! If not, does disabling USB Selective Suspend help? We have seen some evidence that this helps in similar situations with USB attached displays, so I am curious if it help at all here. To do so, here is a good guide if needed --> for disabling selective suspend.

Please let us know if either of these procedures helps resolve this behavior or not and we will proceed from there.

Thank you,

David W.
Plugable Technologies