On-Screen Keyboard doesn't accept any input during preboot authentication on a Dell Venue 11 tablet

Technical Articles ID: KB81357
Last Modified: 2023-04-28 12:31:00 Etc/GMT

Environment

Drive Encryption (DE) 7.x
Dell Venue 11 tablet

For details of DE 7.x supported environments, see KB79422 - Supported platforms for Drive Encryption 7.x.

Problem

After you install and activate DE 7.1, you can't authenticate at the preboot authentication screen if you use the Dell On-Screen Keyboard (OSK).

You can authenticate and access your operating system only after you connect a USB keyboard and restart your computer.

The issue has been reported only on the Dell Venue 11 Tablet.

Cause

Investigation has shown that the Absolute Pointer Protocol (APP) isn't available during startup, even with the Dell BIOS upgraded to revision A10.

You can determine if the APP is available with the UEFI-based tablet test tool (for details, see KB78050 - How to use the Drive Encryption UEFI testing tool to verify if your tablet responds to the touch interface). During a normal boot sequence, during testing, the UEFI-based tablet test tool doesn't allow you to use the touch input. But, after starting your computer and enabling the One Time Boot menu option, the APP becomes available and the tablet test tool tests are successful.

Solution

Install the Dell BIOS update release A12 for the Venue 11 Pro. The APP loads and becomes available during preboot.

IMPORTANT: You must set the firmware FastBoot settings options to Thorough.

Affected Products

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On-Screen Keyboard doesn't accept any input during preboot authentication on a Dell Venue 11 tablet

Environment

Problem

Cause

Solution

Affected Products

Languages:

Title

Title

Knowledge Center

On-Screen Keyboard doesn't accept any input during preboot authentication on a Dell Venue 11 tablet

Environment

Problem

Cause

Solution

Affected Products

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