New install of CQRLOG 2.0.1 into Ubuntu 16.04 64-bit from the PPA.
Here's the scenario. I start the program. Everything loads fine, including transceiver control. I go to Windows -> TRX control. The TRX control window loads. It also works. I close the TRX control window. CQRLOG's ability to talk to the radio ceases, because rigctld is no longer running.
To restore it, I go to File -> Refresh TRX/ROT control. This restores rigctld and all is well.
I do use "Run rigctld when program starts", if that is relevant.
- Jeff KG8IU