sudo apt-get install ocl-icd-opencl-dev

export DISPLAY=":0"
export GPU_MAX_ALLOC_PERCENT="100"
export GPU_USE_SYNC_OBJECTS="1"

#export GPU_FORCE_64BIT_PTR="0"
#export GPU_MAX_HEAP_SIZE="100"
#export GPU_USE_SYNC_OBJECTS="1"
#export GPU_MAX_ALLOC_PERCENT="100"
#export GPU_SINGLE_ALLOC_PERCENT="100"

./sgminer -k X11Evo -o stratum+tcp://xre.suprnova.cc:2114 -u username.worker -p 1234 -I 13 -g 2  -w 128 --lookup-gap 2 --shaders 2048