Comment 17 for bug 1845756

I just experienced this again at login on a QA-test install performed yesterday.
- hp dc7700 (c2d-e6320, 5gb, nvidia quadro nvs 290)

I was using box for support purposes (remote access from remmina) & indirectly caused my real/visible session to logout (I was trying to logout/close my remote session).

On logging back in with the physical session,

- my top display is now black (no wallpaper), bottom display has the top-half of the actual wallpaper. (box has two displays, one above the other)

- top (black) display now shows openbox options on right-click of black-background

- bottom display (top half of wallpaper) right-click has expected LXQt/Lubuntu menu appear