also for Y13 try upgrading in Device Manager the following Sensors, from 22.214.171.124 to 126.96.36.199 which can be obtained from the Y11 driver package
Kionix 3-axis accelerometer
Kionix 3-axis accelerometer in Keyboard
Had same touchscreen “touch signal” problem with the Y13 which I did not have on my Y11.
So I checked and compared the BIOS settings, saw FingerPrint sensor was Disabled on the Y11, but was Enabled on the Y13. So I changed FingerPrint sensor on the Y13 to Disabled and that seems to have fixed this issue