From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Zeyu WANG <zeyu.thomas.wang@gmail.com>
Cc: linux-input@vger.kernel.org
Subject: Re: [PATCH] Input: atkbd - add DMI quirk for Lenovo Yoga Air 14 (83QK)
Date: Tue, 2 Jun 2026 16:32:40 -0700 [thread overview]
Message-ID: <ah9oAiBAHiDqPYUQ@google.com> (raw)
In-Reply-To: <20260602170909.14725-1-zeyu.thomas.wang@gmail.com>
On Wed, Jun 03, 2026 at 01:09:09AM +0800, Zeyu WANG wrote:
> The Lenovo Yoga Air 14 (83QK) laptop keyboard becomes unresponsive
> after the standard atkbd init sequence. Controlled testing on the
> actual hardware shows the F5 (ATKBD_CMD_RESET_DIS / deactivate)
> command specifically corrupts the EC state, causing zero IRQ1
> interrupts after init.
>
> Skipping only the deactivate command (while keeping F4 ENABLE)
> resolves the issue completely: both keystroke input and CapsLock
> LED toggle work correctly. The reverse test - skipping only F4
> while keeping F5 - makes the problem worse (zero keystroke
> interrupts), confirming F5 is the sole culprit.
>
> Add a DMI quirk entry for LENOVO/83QK using the existing
> atkbd_deactivate_fixup callback, consistent with the existing
> entries for LG Electronics and HONOR FMB-P that address the
> same EC F5 deactivate issue.
>
> Signed-off-by: Zeyu WANG <zeyu.thomas.wang@gmail.com>
Applied, thank you.
--
Dmitry
prev parent reply other threads:[~2026-06-02 23:32 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-02 17:09 [PATCH] Input: atkbd - add DMI quirk for Lenovo Yoga Air 14 (83QK) Zeyu WANG
2026-06-02 23:32 ` Dmitry Torokhov [this message]
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