Re: [PATCH] Input: i8042 - add ThinkPad S230u to i8042 nomux list

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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@xxxxxxxxxxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx

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



[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux