Description of problem:
My .xsession-errors file filled with
_xgeWireToEvent: Unknown extension 147, this should never happen.
when will fedora ship this patch :
This patch is still in no released version of libXext, and we didn't received any bug report regarding this. That is why it was not in Fedora.
The patch is simple enough to be included in rawhide and F20 I would say. I'll prepare this today.
libXext 1.3.3 contains the patch, and rawhide has been updated to it:
$ koji -q latest-build rawhide libXext
libXext-1.3.3-1.fc22 f22 whot
Closing the bug