...
Nothing I can do more...
How about skip this step and try cgminer detection directly? If cgminer shows your cores correctly, then you're ready to do.
export DISPLAY=:0
export GPU_USE_SYNC_OBJECTS=1
./cgminer -n
Same:
ERROR - Get temperature failed for adapter 0 - AMD Radeon HD 7700 series
ERROR - Get temperature failed for adapter 1 - AMD Radeon HD 7700 series