Comment 9 for bug 1733125

I will note that in relation to the workaround, this particular behavior is the way it is to resolve a problem reported in Debian. You can find the change in 3.6.1-5

    + Add patch to disable sets a dull gray background during startup.
      (Closes: #843231)

The issue reported is that with the background set this way, then one cannot change it or set their own background image. Does uncommenting the line re-introduce this issue?