linux-kernel - Re: [BUG] Stuck key syndrome

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Message-ID: <859b32ca-acd5-43fd-0577-a76559ba3a9e@applied-asynchrony.com>
Date: Wed, 7 May 2025 22:46:35 +0200
From: Holger Hoffstätte <holger@...lied-asynchrony.com>
To: "Russell King (Oracle)" <linux@...linux.org.uk>,
 Maxime Chevallier <maxime.chevallier@...tlin.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
 Andrew Lunn <andrew@...n.ch>, Woojung Huh <woojung.huh@...rochip.com>,
 Vladimir Oltean <olteanv@...il.com>, Heiner Kallweit <hkallweit1@...il.com>,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
 Dmitry Torokhov <dmitry.torokhov@...il.com>, linux-input@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [BUG] Stuck key syndrome

On 2025-05-07 13:44, Russell King (Oracle) wrote:
> Could you try booting with i8042_unlock=1 and see whether that makes any
> difference please?

It did not help - just had another runaway event with that setting,
on my ca. 2021 Thinkpad L14. Had the symptom for as long as I have
had this machine.

We've been tracking this problem in Gentoo since late 2022, see
https://bugs.gentoo.org/873163 and none of the suggested options
for i8042 really make a difference. In my case I almost always get
the stuck key events when using the cursor keys for scrolling in a
web browser. Sometimes once a month, sometimes twice a day.

Fwiw it's not necessary to reboot; suspend/resume fixes it,
as in close/reopen the lid if you have that configured.

thanks
Holger