linux-kernel - [REGRESSION] Keys register not or only later on the keyboard on the 2022 Asus Vivobook S15 OLED

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Message-ID: <8a541683-36da-4cea-a8a9-db6ee875c86d@leemhuis.info>
Date: Sun, 4 Aug 2024 08:48:22 +0200
From: "Linux regression tracking (Thorsten Leemhuis)"
 <regressions@...mhuis.info>
To: "Christian A. Ehrhardt" <lk@...e.de>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
 LKML <linux-kernel@...r.kernel.org>,
 Linux kernel regressions list <regressions@...ts.linux.dev>,
 Christian Heusel <christian@...sel.eu>
Subject: [REGRESSION] Keys register not or only later on the keyboard on the
 2022 Asus Vivobook S15 OLED

Hi, Thorsten here, the Linux kernel's regression tracker.

Christian, I noticed a report about a regression in bugzilla.kernel.org
that appears to be caused by a change of yours:

de52aca4d9d56c ("usb: typec: ucsi: Never send a lone connector change
ack") [v6.10-rc1]

As many (most?) kernel developers don't keep an eye on the bug tracker,
I decided to write this mail. To quote from
https://bugzilla.kernel.org/show_bug.cgi?id=219108 :

> As the summary says, on the 2022 Asus Vivobook S15 OLED (model
> K3502ZA.306), the inbuilt keyboard has bad key registration after
> plugging the laptop in for charging. Sometimes, the keys pressed do not
> register at all, and sometimes they register very late. The keyboard
> works properly if I don't plug the laptop in to charge, and this issue
> doesn't manifest ever on kernels older than 6.6.37-1.
> 
> I have tested every lts kernel after 6.6.37-1 and all of them have 
> the same problem. I have also tested the latest mainline and zen
> kernels (versions 6.10.1 for both) and they too have the the same
> problem.> Once the laptop is plugged into it's charging cable, the
> keyboard fails and unplugging the laptop doesn't fix the situation.
> However, if I don't plug the laptop into it's charging cable, the
> problem never manifests itself. The charging cable itself is a usb
> type c cable and the laptop charges over thunderbolt.
See the ticket for more details. The problem still happens with
6.11-rc1, a straight revert was not possible.

Note, you have to use bugzilla to reach the reporter, as I sadly[1] can
not CCed them in mails like this.

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
--
Everything you wanna know about Linux kernel regression tracking:
https://linux-regtracking.leemhuis.info/about/#tldr
If I did something stupid, please tell me, as explained on that page.

[1] because bugzilla.kernel.org tells users upon registration their
"email address will never be displayed to logged out users"

P.S.: let me use this mail to also add the report to the list of tracked
regressions to ensure it's doesn't fall through the cracks:

#regzbot introduced: de52aca4d9d56c3b2f00b638d457075914b1a227
#regzbot title: usb: typec: ucsi: Keys register not or only later on the
keyboard on the 2022 Asus Vivobook S15 OLED
#regzbot from: No Name
#regzbot duplicate: https://bugzilla.kernel.org/show_bug.cgi?id=219108
#regzbot ignore-activity