Raspbian, with kernel 4.4.38, and pixel desktop fails to take screen shot when I press the Print screen button. I don't know what the normal key-binding for the print-screen button is. in other Desktop environments, I might call a screenshot applet (like gnome-screenshot, or mate-screenshot) when pressing the screen-shot button, but i do not know what the name of that application would be in pixel.
Does pixel have a default screen-shot application?