linux-kernel - Re: [PATCH 2/2] Input: i8042 - add TUXEDO devices to i8042 quirk tables for partial fix

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Message-ID: <37a7e536-252a-c8a9-1412-37d3f2052a6d@redhat.com>
Date:   Fri, 8 Jul 2022 21:39:20 +0200
From:   Hans de Goede <hdegoede@...hat.com>
To:     Werner Sembach <wse@...edocomputers.com>,
        dmitry.torokhov@...il.com, tiwai@...e.de, samuel@...oj.net,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] Input: i8042 - add TUXEDO devices to i8042 quirk
 tables for partial fix

Hi,

On 7/8/22 18:10, Werner Sembach wrote:
> A lot of modern Clevo barebones have touchpad and/or keyboard issues after
> suspend fixable with nomux + reset + noloop + nopnp. Luckily, none of them
> have an external PS/2 port so this can safely be set for all of them.
> 
> I'm not entirely sure if every device listed really needs all four quirks,
> but after testing and production use. No negative effects could be
> observed when setting all four.
> 
> Setting SERIO_QUIRK_NOMUX or SERIO_QUIRK_RESET_ALWAYS on the Clevo N150CU
> and the Clevo NHxxRZQ makes the keyboard very laggy for ~5 seconds after
> boot and sometimes also after resume. However both are required for the
> keyboard to not fail completely sometimes after boot or resume.

Hmm, the very laggy bit does not sound good. Have you looked into other
solutions, e.g. what happens if you use just nomux without any of the
other 3 options ?

Regards,

Hans


> 
> Signed-off-by: Werner Sembach <wse@...edocomputers.com>
> Cc: stable@...r.kernel.org
> ---
>  drivers/input/serio/i8042-x86ia64io.h | 28 +++++++++++++++++++++++++++
>  1 file changed, 28 insertions(+)
> 
> diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h
> index 5204a7dd61d4..9dc0266e5168 100644
> --- a/drivers/input/serio/i8042-x86ia64io.h
> +++ b/drivers/input/serio/i8042-x86ia64io.h
> @@ -1107,6 +1107,20 @@ static const struct dmi_system_id i8042_dmi_quirk_table[] __initconst = {
>  		.driver_data = (void *)(SERIO_QUIRK_NOMUX | SERIO_QUIRK_RESET_ALWAYS |
>  					SERIO_QUIRK_NOLOOP | SERIO_QUIRK_NOPNP)
>  	},
> +	{
> +		/*
> +		 * Setting SERIO_QUIRK_NOMUX or SERIO_QUIRK_RESET_ALWAYS makes
> +		 * the keyboard very laggy for ~5 seconds after boot and
> +		 * sometimes also after resume.
> +		 * However both are required for the keyboard to not fail
> +		 * completely sometimes after boot or resume.
> +		 */
> +		.matches = {
> +			DMI_MATCH(DMI_BOARD_NAME, "N150CU"),
> +		},
> +		.driver_data = (void *)(SERIO_QUIRK_NOMUX | SERIO_QUIRK_RESET_ALWAYS |
> +					SERIO_QUIRK_NOLOOP | SERIO_QUIRK_NOPNP)
> +	},
>  	{
>  		.matches = {
>  			DMI_MATCH(DMI_BOARD_NAME, "NH5xAx"),
> @@ -1114,6 +1128,20 @@ static const struct dmi_system_id i8042_dmi_quirk_table[] __initconst = {
>  		.driver_data = (void *)(SERIO_QUIRK_NOMUX | SERIO_QUIRK_RESET_ALWAYS |
>  					SERIO_QUIRK_NOLOOP | SERIO_QUIRK_NOPNP)
>  	},
> +	{
> +		/*
> +		 * Setting SERIO_QUIRK_NOMUX or SERIO_QUIRK_RESET_ALWAYS makes
> +		 * the keyboard very laggy for ~5 seconds after boot and
> +		 * sometimes also after resume.
> +		 * However both are required for the keyboard to not fail
> +		 * completely sometimes after boot or resume.
> +		 */
> +		.matches = {
> +			DMI_MATCH(DMI_BOARD_NAME, "NHxxRZQ"),
> +		},
> +		.driver_data = (void *)(SERIO_QUIRK_NOMUX | SERIO_QUIRK_RESET_ALWAYS |
> +					SERIO_QUIRK_NOLOOP | SERIO_QUIRK_NOPNP)
> +	},
>  	{
>  		.matches = {
>  			DMI_MATCH(DMI_BOARD_NAME, "NL5xRU"),