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If the destination screen is exposed (for example screensavers), we need to redraw. So enable the ExposeEvent on the target and synthesize damage to any clones on that display in order to trigger a redraw. Reported-by: Raffael Herzog <herzog@raffael.ch> References: https://bugs.freedesktop.org/show_bug.cgi?id=93562 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>