In setting up cqrlog today I found this:
Starting RigCtld .../usr/bin/rigctld -m 128 -r /dev/ttyUSB0 -t 4532  -s 9600  --set-conf=data_bits=8,stop_bits=1,parity=None,serial_handshake=Hardware,dtr_state=ON,rts_state=ONConfig parameter error: Feature not availablerigctld started!Connected to localhost:4532
This was for a Yaesu FT-950.
After a little troubleshooting it apprears some of the options are not what rigctld wants.
tim@scotty:~$ /usr/bin/rigctld -m 128 -Lrig_pathname: "Path name to the device file of the rig"        Default: /dev/rig, Value: /dev/ttyS0        String.write_delay: "Delay in ms between each byte sent out"        Default: 0, Value: 0        Range: 0.0..1000.0, step 1.0post_write_delay: "Delay in ms between each command sent out"        Default: 0, Value: 5        Range: 0.0..1000.0, step 1.0timeout: "Timeout in ms"        Default: 0, Value: 2000        Range: 0.0..10000.0, step 1.0retry: "Max number of retry"        Default: 0, Value: 0        Range: 0.0..10.0, step 1.0itu_region: "ITU region this rig has been manufactured for (freq. band plan)"        Default: 0, Value: 2        Range: 1.0..3.0, step 1.0vfo_comp: "VFO compensation in ppm"        Default: 0, Value: 0.000000        Range: 0.0..1000.0, step 0.0poll_interval: "Polling interval in millisecond for transceive emulation"        Default: 500, Value: 500        Range: 0.0..1000000.0, step 1.0ptt_type: "Push-To-Talk interface type override"        Default: RIG, Value:         Combo: RIG, DTR, RTS, Parallel, CM108, Noneptt_pathname: "Path name to the device file of the Push-To-Talk"        Default: /dev/rig, Value:         String.ptt_bitnum: "Push-To-Talk GPIO bit number"        Default: 2, Value:         Range: 0.0..7.0, step 1.0dcd_type: "Data Carrier Detect (or squelch) interface type override"        Default: RIG, Value:         Combo: RIG, DSR, CTS, CD, Parallel, CM108, Nonedcd_pathname: "Path name to the device file of the Data Carrier Detect (or squelch)"        Default: /dev/rig, Value:         String.serial_speed: "Serial port baud rate"        Default: 0, Value: 38400        Range: 300.0..115200.0, step 1.0data_bits: "Serial port data bits"        Default: 8, Value: 8        Range: 5.0..8.0, step 1.0stop_bits: "Serial port stop bits"        Default: 1, Value: 1        Range: 0.0..3.0, step 1.0serial_parity: "Serial port parity"        Default: None, Value: None        Combo: None, Odd, Even, Mark, Spaceserial_handshake: "Serial port handshake"        Default: None, Value: Hardware        Combo: None, XONXOFF, Hardwarerts_state: "Serial port set state of RTS signal for external powering"        Default: Unset, Value: Unset        Combo: Unset, ON, OFFdtr_state: "Serial port set state of DTR signal for external powering"        Default: Unset, Value: Unset        Combo: Unset, ON, OFF
parity needs to be serial_parity (even though looks like none is only choice).
This was
Tim@scotty:~$ rigctld -Vrigctl, Hamlib 1.2.15.3
By setting the options to "default' in the preferences, I was able to overcome the problem for now.
from debug now:
starting RigCtld .../usr/bin/rigctld -m 128 -r /dev/ttyUSB0 -t 4532  -s 9600 rigctld started!Connected to localhost:4532
All good!
Best regards and Happy New Year!
Tim
KY4J