PS, for reference see also this mailing list thread on plasma-devel: https://mail.kde.org/pipermail/plasma-devel/2017-January/064733.html And https://bugs.kde.org/show_bug.cgi?id=374023 In particular: > I'm sorry but your hardware is no longer supported. The error message thrown > from a component we depend on is: "This program requires an X86 processor > that supports SSE2 extension, at least a Pentium 4 or newer"