From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Kevin Locke <kevin@kevinlocke.name>
Cc: linux-input@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH] Input: i8042 - add ThinkPad S230u to i8042 nomux list
Date: Mon, 20 Apr 2020 10:02:34 -0700 [thread overview]
Message-ID: <20200420170234.GN166864@dtor-ws> (raw)
In-Reply-To: <feb8a8339a67025dab3850e6377eb6f3a0e782ba.1587400635.git.kevin@kevinlocke.name>
On Mon, Apr 20, 2020 at 10:37:15AM -0600, Kevin Locke wrote:
> On the Lenovo ThinkPad Twist S230u (3347-4HU) with BIOS version
> "GDETC1WW (1.81 ) 06/27/2019", whether booted in UEFI or Legacy/CSM mode
> the keyboard, Synaptics TouchPad, and TrackPoint either do not function
> or stop functioning a few minutes after boot. This problem has been
> noted before, perhaps only occurring on BIOS 1.57 and
> later.[1][2][3][4][5]
>
> This model does not have an external PS/2 port, so mux does not appear
> to be useful.
>
> Odds of a BIOS fix appear to be low: 1.57 was released over 6 years ago
> and although the [BIOS changelog] notes "Fixed an issue of UEFI
> touchpad/trackpoint/keyboard/touchscreen" in 1.58, it appears to be
> insufficient.
>
> Adding 33474HU to the nomux list avoids the issue on my system.
>
> [1]: https://bugs.launchpad.net/bugs/1210748
> [2]: https://bbs.archlinux.org/viewtopic.php?pid=1360425
> [3]: https://forums.linuxmint.com/viewtopic.php?f=46&t=41200
> [4]: https://forums.linuxmint.com/viewtopic.php?f=49&t=157115
> [5]: https://forums.lenovo.com/topic/findpost/27/1337119
> [BIOS changelog]: https://download.lenovo.com/pccbbs/mobiles/gduj33uc.txt
>
> Signed-off-by: Kevin Locke <kevin@kevinlocke.name>
> Cc: stable@vger.kernel.org
Applied, thank you.
> ---
> drivers/input/serio/i8042-x86ia64io.h | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h
> index 08e919dbeb5d..5bbc9152731d 100644
> --- a/drivers/input/serio/i8042-x86ia64io.h
> +++ b/drivers/input/serio/i8042-x86ia64io.h
> @@ -541,6 +541,13 @@ static const struct dmi_system_id __initconst i8042_dmi_nomux_table[] = {
> DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5738"),
> },
> },
> + {
> + /* Lenovo ThinkPad Twist S230u */
> + .matches = {
> + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
> + DMI_MATCH(DMI_PRODUCT_NAME, "33474HU"),
> + },
> + },
> { }
> };
>
> --
> 2.26.1
>
--
Dmitry
next prev parent reply other threads:[~2020-04-20 17:02 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-20 16:37 [PATCH] Input: i8042 - add ThinkPad S230u to i8042 nomux list Kevin Locke
2020-04-20 17:02 ` Dmitry Torokhov [this message]
2020-04-24 4:25 ` Kevin Locke
2020-04-24 4:30 ` [PATCH] Input: i8042 - add ThinkPad S230u to i8042 reset list Kevin Locke
2020-04-28 1:08 ` Dmitry Torokhov
2020-04-28 1:08 ` [PATCH] Input: i8042 - add ThinkPad S230u to i8042 nomux list Dmitry Torokhov
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