Some Ubuntu 12.04 (Precise) users who use Ubuntu’s default Unity desktop environment may have noticed that it’s commonplace for Unity to crash when closing darktable. It so happens that darktable is exposing a bug in Unity, which got fixed upstream with a one-liner patch. The above fix will be available in the next major update of Unity (5.14), but in the meanwhile I cherry picked the relevant patch to the current released version of Unity (5.