Unable to negotiate with 192.168.1.196 port 22: no matching cipher found. Their offer: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
This seems to fix a problem connecting to Ubuntu. Encryption is set to a level from other systems to work with vnc viewer, so can be disabled. Might not be useful if not on a secure channel. But tested and works. This goes to the desktop software on the Ubuntu server machine.