Shift + Printscreen, trace a rectangle, nothing happens, no flash, no shutter-click try again, Shift + Printscreen, trace a rectangle, nothing happens, no flash, no shutter-click try again, Shift + Printscreen, trace a rectangle, nothing happens, no flash, no shutter-click get frustrated, start rapidly Shift+Printscreening and drawing rectangles again and again until finally some portion of some screenshot is taken somehow.
Why couldn't this work the first time? Why can't it work every time? Is everyone else just taking full screenshots and editing them in GIMP or something to get the partial screenshot they wanted so this issue doesn't happen for them?