Michael Milliman wrote: > I have no clue what happened, but the desktop background picture has > ceased to be displayed. [...] > I have attempted to re-set the desktop > background via both system settings and via right-click->set desktop > background on the desktop to no effect.
I don't know what caused your old wallpaper to go away, but the inability to set it is tracked by https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=862355 The bug report also lists a workaround (which I haven't tried). mike