BTT tft 5 v.1 touch problem after updating raspbian

[Alex K]

Hello,

I use this display as the main screen on my portable raspberry umpc. It worked good without any additional drivers until they update Raspbian.

After installing new Raspbian (based on Debian version 11) my touchscreen doesn’t work properly. Just jumping from one point to another. You could press it and it will react, but a cursor is always appear at some unpredictable point.

I’ve tried both new 32/64bit. Same result.

If I use previous version based on Debian 10 everything is alright.

 

Please help me fix this problem) I want to use the new OS.

p.s. can’t find something with Google. It seems nobody have such problem except me.

[BTT Tony]

Hi ，
Thanks for your information.

Are you using PITFT50? Or a normal TFT 50?
If you are using the former, did you install the Raspberry Pi system image successfully? Does the Raspberry Pi interface appear on the screen? You can provide me with some pictures or videos, thank you for your cooperation, I am very grateful.