The h2susb6 IO chassis seems to be missing a dac (dac_4).  lspci is listing 4 dacs, but 5 are needed for controls of ETMY and TMSY.  See the SUS ETM controls wiring diagram (D1002741).  h2susetmy uses dac0, dac1, and half of dac2 for OSEM coil drive signals, h2sustmsy uses half or dac2 for it's OSEM coil drive signals, and h2susetmy uses dac4 for it's ESD drive signals.