opencl still dosen't work. amd 2.75-2.75 rc1

I still can’t get opencl to work on linux mint 17.1. it worked on my previous install of 17.1 with the drivers I had installed. I used to dev drivers but it would show the open cl option in the panel and when it was set to gpu it would try to build the kernels and it would ether fail to build the kernels, or just continue indeffently.

I don’t want to post the hardware, and want a more generic fix first. cause I am likely to have to do this a few different machines. I don’t want to ask ten times, for each time.