Bad form to answer my own query, but better than having someone else slave to solve the problem ... The reason my compose key didn't work with LyX after the switch to a new Solaris-2.6 machine is that LANG on the new machine was set to C. Adding LANG=en_US export LANG to ~/.dtprofile fixed it. Sorry for the false alarm. LyX is happy, and I am too. I'm surprised that the compose key still worked in xterm and xemacs with LANG=C. -- Ronald Florence http://members.home.net/18james