Who can explain where I can find drivers for A4-7210 on linux with a kernel of 4.9 or more. How to install them? Support AMD gave me drivers only ubuntu 15.* !
Hardly any computer specs. But according to AMD Download site your apu is a laptop. Here is the latest Linux Ubuntu 14.04 drivers for your APU: A4-7210 with Radeon™ R3 Graphics Drivers & Support | AMD
It's a pity. I'll wait. Maybe it will be updated. Someday
Ask your Question at this AMD Linux Forum. I am sure someone has the same issue as you do and might have a fix or workaround: https://www.phoronix.com/forums/forum/linux-graphics-x-org-drivers/amd-linux
This thread concerns installing AMD Drivers in Kernel 4.9: https://linuxconfig.org/how-to-install-amdgpu-drivers-on-debian-9-stretch-linux
Also this Thread from Ask Ubuntu : R9 270x with AMDGPU driver under Ubuntu 16.04 with new 4.9 kernel - Ask Ubuntu