(In reply to Josh Zimmerman from comment #10) > Created attachment 718720 [details] > This is my xsession file. This confirms the cause of your problems at least. I have bad news for you though: Apparently Tumbleweed doesn't even boot any more without SSE2, see bug#1032165. If that's true in general and SSE2 is now "officially" required, trying to get Qt5 (or Plasma) to works without it would just be a waste of time.