Hi Debian and Ubuntu KDE users, Thanks a lot to David Edmundson who began xembed-sni-proxy project [1]. This program allows users of KDE Plasma 5 to use applications which supports only legacy system tray icons as simple as applications which support the SNI specification.
xembed-sni-proxy is currently available in Debian unstable in the package plasma-systray-legacy [2]. Probably it is too late to add this package into official Ubuntu archive before Ubuntu Wily is released [3]. But users of Ubuntu Vivid and Ubuntu Wily may install this package from a special PPA [4]. I hope it should simplify the migration from KDE 4 to KDE Plasma 5 for usual users who don't know the difference between legacy system tray protocol (XEmbed) and new StatusNotifierItem specification, but who might be disappointed when some of programs will suddenly disappear from a "system tray" area after update of their system. If you have some issues with this program please report bugs at [5]. [1] http://blog.davidedmundson.co.uk/blog/xembed_back [2] https://packages.debian.org/sid/plasma-systray-legacy [3] https://wiki.ubuntu.com/WilyWerewolf/ReleaseSchedule [4] https://launchpad.net/~tehnick/+archive/ubuntu/xembed-sni-proxy [5] https://github.com/davidedmundson/xembed-sni-proxy/issues Best wishes, Boris