How to use AMD GPU in Blender?

Question

GPGPU

There is a Samsung NP535 U4C laptop with AMD Radeon HD 7500M/7600M Series graphics, AMD A6-4455M APU with Radeon(tm) HD Graphics×2. OS Ubuntu 14.04 64-bit. How to force Blender to use GPU for rendering? Blender 2.76.
Judging by the article https://geektimes.ru/post/253440 it should work. Driver tried both free and proprietary. In the blender settings, only the CPU.
Tell me what needs to be done?

Answer 1

You can try, but judging by the haste in which they made patches, nothing can be guaranteed. In addition, not all features will work on these vidyuhi cycles https://www.blender.org/manual/render/cycles/featu...

Answer 2

The Internet says to use proprietary drivers and set an environment variable.
Try launching the console from the Blender folder and run the command:
CYCLES_OPENCL_TEST=all ./blender