Hello,
Bernhard Hailer has asked me to resubmit my patch for the issue with modern Ubuntu serial drivers having DTR low, at least when the port isn't open, causing the radio to be in transmit mode and not ready to accept CHIRP's commands as soon as the port is open. This fixes #4165.
Issue: https://chirp.danplanet.com/issues/4165 Original patch submission (did anybody get it?): http://intrepid.danplanet.com/pipermail/chirp_devel/2016-October/004329.html
I tried to send this message earlier after subscribing to the list and clicking the confirmation link in the subscription e-mail, but I think web based confirmation is broken. When I sent the patch I got a message saying it was held for moderation because I wasn't a member of the list. I had to subscribe again and confirm by e-mail instead to actually get onto the list.
Thanks, -Adam