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Bug #638

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ACPI\LEN0068 (ThinkPad Extra Buttons) not detected by Windows 11 on ThinkPad T430

Bug #638: ACPI\LEN0068 (ThinkPad Extra Buttons) not detected by Windows 11 on ThinkPad T430

Added by Avraham Hollander 1 day ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
board support
Target version:
none
Start date:
04/14/2026
Due date:
% Done:

0%

Estimated time:
Affected versions:
main
Needs backport to:
Affected hardware:
ThinkPad T430
Affected OS:
Windows 11

Description

The device ACPI\LEN0068 (exposed as ThinkPad Extra Buttons on Linux via the thinkpad_acpi driver) is not detected at all by Windows 11. When installing the Lenovo Hotkey Features Integration driver, fn.inf shows up in Device Manager, but not bound to any device. As a result, the Fn special keys (mic mute, airplane mode, etc.) do not work under Windows 11 (25H2). On Linux, the thinkpad_acpi driver enumerates it just fine, and the buttons all work as expected.

I am using Coreboot 26.03-315-gec0d1946e7f3.

Files

config.txt (23.3 KB) config.txt Avraham Hollander, 04/14/2026 05:39 PM

Related links

https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-t-series-laptops/thinkpad-t430/downloads/ds120449-hotkey-features-integration-for-windows-10-64-bit-thinkpad

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