My HD 7990 (dual gpu) only mines with the other core and completely discards the another. Can you please help me find the solution. Now i´m hashing GPU 0= 0.000H/S and GPU 1= 270-290H/S.
I´m using windows 10  with 15.12 drivers. I do not have this problem with other 7990s from my other systems. I have also uninstalled the drivers with DDU and reinstalled them twice. If you can help me with this you would do a great deal to release me from my despair. Any bit of advice helps since i can´t figure anything out at this moment.