I have this issue on lubuntu 15.10 too. I right clicked on the panel and selected panel settings ->advanced and changed "Terminal Emulator" to lxterminal %s. Now it's working again.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1434774 Title: lxpanel volume applet settings opens empty terminal window To manage notifications about this bug go to: https://bugs.launchpad.net/hundredpapercuts/+bug/1434774/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs