https://bugs.freedesktop.org/show_bug.cgi?id=91704
--- Comment #14 from Andy Furniss adf.lists@gmail.com --- (In reply to Mathias Tillman from comment #13)
Created attachment 117871 [details] [review] Potential fix
Andy: Could you test the attached patch, please? It's now working fine for me.
It also seems to be working for me :-)
I just did about 20 startx in a row and all is OK.
va_test behaves the same as before = fail as user from within X, but maybe that is expected?
modesetting still has issues, but they probably are nothing to do with this bug anyway - I had never used it before this issue arose.