I'm using raspberry pi on latest ubuntu with latest Indi and kstars. I have a skywatcher dobsonian with synscan and I'm using rj-11 serial to usb cable.
so issue I'm having is whatever driver I use, it doesn't connect with my mount.

synscan legacy - warning synscan mount not responding
synscan - error serial read error: timeout error
skywatcher alt-az - failed to connect. please ensure the device is connected and powered on.

I have done alignment and put it in pc direct mod on hc.