WSJTX 1.7 installation appears to work fine on RPi2B with Ubuntu 16.04, a bit slow on JT65 decodes, but to be expected, I used image with ssh installed so could avoid using connected monitor and keyboard. Then installed VNC and gnome so can use remote GUI for access. Only problem so far is incorrect keyboard mapping when trying to fill in callsign and locator text boxes. Got round it by cutting and pasting from terminal window. This would be a big problem for a chatty protocol like psk31, but not for the minimal text jt protocols.