Bad touch digitizer ground connection?

[Razem]

Hello. I think that could very well be it. Regarding the ghost touches, you can look through comments in this thread: Ghost inputs on FP4

Especially:

Ghost inputs on FP4

I wonder if the ghost touches, same as the unresponsive touch inputs may be caused by static buildup. It’s well-known by now, that the screen becomes much more responsive if you hold the phone in your hands versus using the touchscreen while the phone is on the table. Even if you are using a plastic case, having more conductive mass nearby reduces static buildup a lot. If that theory is correct, both issues should be less of an issue in higher humidity areas, since humidity also affects stati…

Ghost inputs on FP4

I have been sleuthing to try and figure out how this thing works in the device: The screen and touchscreen are made together by DJN: The kernel config has this: CONFIG_TABLET_USB_KBTAB=y CONFIG_INPUT_TOUCHSCREEN=y CONFIG_TOUCHSCREEN_HIMAX_CHIPSET=y CONFIG_TOUCHSCREEN_HIMAX_INCELL=y CONFIG_TOUCHSCREEN_HIMAX_IC_HX83112=y CONFIG_TOUCHSCREEN_HIMAX_INSPECT=y CONFIG_TOUCHSCREEN_HIMAX_COMMON=y CONFIG_TOUCHSCREEN_HIMAX_DEBUG=y # CONFIG_TOUCHSCREEN_HIMAX_EMBEDDED_FIRMWARE=y # CONFIG_SECURE_TOUCH_SYNA…

Ghost inputs on FP4

It would be nice that it was so simple to fix but I highly doubt it’s the issue. Reasons why I don’t think it has anything to do with the connector: It’s a digital signal from a controller chip on the display for the LCD integrated in-cell touchscreen. I don’t see how the connector could create such an issue. No issues with display and that is likely the majority of pins on the connector. Any physical connector issue would be bad news. I was unable to reproduce the issue by applying more or le…