On current versions (QEMU 2.8, GNOME-Shell 3.22.3 on Wayland), the
screensaver will activate. Cursor control is given to the lock screen,
everything works properly. After the screen is unlocked, the cursor is
given back to QEMU and is still in "mouse grab" mode.
** Changed in: qemu
Status:
Public bug reported:
When the GNOME 3 screensaver activates with the mouse cursor over the
SDL window, the screensaver will not unlock unless the gnome-shell
process is killed and restarted manually. This seems to be related to
the fact that the key strokes are grabbed by SDL, but the screensaver