[Dual-GPU] AMD Radeon R3 and R5 M230

[CesM]

I successfully installed Mac OS Sierra on my notebook, however, R3 GPU doesn't work properly and R5 M230 is not detected.

Screenshots of system informations in attached files.

 

I don't know where to start and I would appreciate if someone could give me some general steps on how to make at least one of GPU work properly.

 

For what I have been searching Dual-GPU may be a problem and unfortunately, I cannot disable any GPU in the BIOS.

 

 

TOSHIBA L50D-B-13X:

AMD A4-6210 with AMD Radeon R3(1002_9850)

AMD Radeon R5 M230 (1002_6665)

 

Thank you.