Keyboard unresponsive at bootguard when resuming from hibernation with Encryption Desktop Drive Encryption

Products

• Drive Encryption

Issue/Introduction

When resuming from hibernation on a machine running Windows 10 with UEFI BIOS and encrypted with Encryption Desktop Drive Encryption, the keyboard is unresponsive and the user is unable to enter their password at bootguard.

Cause

The USB device enumeration is skipped when resuming from hibernation.

Environment

• Windows 10 x64
• UEFI BIOS
• Encryption Desktop Drive Encryption 10.4.1 MP1
• Lenovo ​ThinkPad X1 Tablet 1st Gen (Type 20GG, 20GH)

Resolution

Enable the Enumerate Keyboard option in the BIOS as described in this article from Lenovo.