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.
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