Kali linux 2019 on raspberry pi 3 b+ web browser and screen resolution problem

Hello , I installed kali linux 64 bit on raspberry pi 3 b+ and I have 7 inch touchscreen. I flashed kali linux image with balena etcher and then inserted into raspberry pi 3 b+ and after kali linux started correctly I see some black border around my 7 inch touchscreen!!

If I try to open firefox it opens for 3 seconds and it closes automatically??

I did update and upgrade and dist-upgrade but the black border around 7 inch touchscreen and web browser problem is still there

Please any help how I can solve this ! Thx

the black border can be configured by overscan
You need to check logs to find out what is the problem with firefox. https://www.linuxquestions.org/quest...ad-4175614092/