I wonder, why you dont see "Checking fans!" in your kernel log. Are fans connected? If they are not, connect them. Also, it wont hash until it detects both fans spins at least at 4200rpm (you can fake that with 555timer).
part of my kernel log.
Miner Type = S9
Miner compile time: Mon Nov 6 17:17:48 CST 2017 type: Antminer S9set_reset_allhashboard = 0x0000ffff
set_reset_allhashboard = 0x00000000
set_reset_allhashboard = 0x0000ffff
miner ID : xxxx
set_reset_allhashboard = 0x0000ffff
Checking fans!get fan[2] speed=4320
get fan[2] speed=4320
get fan[2] speed=4320
get fan[2] speed=4320
get fan[2] speed=4320
get fan[2] speed=4320
get fan[5] speed=4320
get fan[2] speed=4320
get fan[5] speed=4320
get fan[2] speed=4320
get fan[5] speed=4320