I also had this problem for a long time. I now changed to:
SATNOGS_SOAPY_RX_DEVICE="driver=hackrf,bias_tx=true"
and now the Bias-T is finally working again.
I also had this problem for a long time. I now changed to:
SATNOGS_SOAPY_RX_DEVICE="driver=hackrf,bias_tx=true"
and now the Bias-T is finally working again.