Cannot unlock the terminal after bringing it out of sleep mode

When a user wakes a user terminal from sleep or hibernation mode, and then taps the Nymi Bandagainst the attached NFC reader, the terminal does not unlock. The user can log in by using the Nymi Credential Provider.

Cause

To conserve battery life, the user terminal is configured to suspend USB devices when the terminal is in power mode. When a user wakes the user terminal, the USB devices are not reactivated until after the user logs in to the terminal.

Resolution

To resolve this issue, perform one of the following actions:

  • Create a Windows group policy to disable USB Selective Suspend.
  • Manually disable the USB Selective Suspend option on each terminal. For example, on Windows 10, perform the following steps:
    1. Open Power Options, and then click Additional Power Settings.

      The following figure provides an example of the Power Options window.

      Figure 1. Additional Power options
    2. In the Choose or customize a power plan screen, click the Change plan settings link, which appears beside the power plan.

      The following figure provides an example of the Choose or customize a power plan screen.

      Figure 2. Choose or customize a power plan screen
    3. On the Edit Plan Settings window, click Change advanced power settings.

      The following figure shows the Edit Plan settings window.

      Figure 3. Edit Plan Settings screen
    4. In the Advanced settings window, perform the following steps:
      1. Expand USB settings > USB selective suspend setting
      2. From the On battery list, select Disabled.
      3. From the Plugged in list, select Disabled.
      4. Click OK.
      The following figure provides an example of the Advanced settings window.
      Figure 4. Advanced Settings window
    5. Close the Edit Plan Settings and Power options windows.

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