I received my HEX8, compiled cgminer with --enable-hexminerb and --enable-hexminer8. It detects my 3 HEX16B and the HEX8A1, but the hashrate of the HEX8A1 is displayed as zero (while the hexBs work OK). What could be the problem?
Also, the fan is quite loud

What is the power to hex8?
From same psu like your hexb's?
Post clock and voltage pls