On-Screen Keyboard fails during preboot authentication on a DT Research DT315CT

Technical Articles ID: KB82894
Last Modified: 2023-04-28 11:06:21 Etc/GMT

Environment

Drive Encryption (DE) 7.1.x

DT Research DT315CT (Rugged Tablet) - BIOS: InsydeH2O Version 315CT_1.01.07

For details of DE 7.1.x supported environments, see KB79422 - Supported platforms for Drive Encryption 7.x.

Problem

The On Screen Keyboard (OSK) doesn't accept any input on a DT Research DT315CT during preboot authentication.

After enabling USB support, see KB78050 - How to use the Drive Encryption UEFI testing tool to verify if your tablet responds to the touch interface.

Both of the following encryption policy options are enabled:

Enable on-screen keyboard
Always Enable on-screen keyboard

Cause

System properties show that these devices are in Advanced Host Controller Interface mode in the BIOS. Support for Touch Screen Tablets requires the system to be running a UEFI.

Solution

Access the BIOS and change it to use UEFI.

Affected Products

Drive Encryption 7.2 (EOL)

Languages:

This article is available in the following languages:

Knowledge Center

On-Screen Keyboard fails during preboot authentication on a DT Research DT315CT

Environment

Problem

Cause

Solution

Affected Products

Languages:

Title

Title

Knowledge Center

On-Screen Keyboard fails during preboot authentication on a DT Research DT315CT

Environment

Problem

Cause

Solution

Affected Products

Languages:

Choose your region

Title

Title