From 9e9762e578db7556bea644bb5a8a2435f63544d1 Mon Sep 17 00:00:00 2001 From: Abhijeeth Babu Date: Thu, 18 Jun 2026 00:56:11 +0530 Subject: [PATCH] i2c: acpi: Force ELAN1300 touchpads to 100 kHz The ELAN1300 touchpad with HID ID 04F3:3104 on the ASUS VivoBook X513UA_KM513UA exhibits severe pointer jumps and erratic movement when the I2C bus operates at 400 kHz. The system DSDT describes the touchpad using an I2cSerialBusV2 resource with a speed of 0x00061A80, corresponding to 400 kHz, on the AMDI0010:03 controller. At this speed, libinput repeatedly reports: kernel bug: Touch jump detected and discarded Add ELAN1300 to i2c_acpi_force_100khz_device_ids so that it operates at 100 kHz. Before the change, nine touch-jump events were recorded, with additional messages suppressed by libinput's rate limiter. With the bus forced to 100 kHz, no touch-jump events have been observed and the touchpad operates normally. The affected system uses BIOS X513UA.319 dated 2023-05-09. Signed-off-by: Abhijeeth Babu Acked-by: Mika Westerberg Signed-off-by: Andi Shyti Link: https://lore.kernel.org/r/20260617192611.125513-1-babu.jeeth@gmail.com --- drivers/i2c/i2c-core-acpi.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c index e5fddacae9a4..763743d5dbd6 100644 --- a/drivers/i2c/i2c-core-acpi.c +++ b/drivers/i2c/i2c-core-acpi.c @@ -376,6 +376,7 @@ static const struct acpi_device_id i2c_acpi_force_100khz_device_ids[] = { { "DLL0945", 0 }, { "ELAN0678", 0 }, { "ELAN06FA", 0 }, + { "ELAN1300", 0 }, {} };