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Keith Packard authored
The RandR CRTC structures are freed when their resource IDs are destroyed during server shut down, which is before the screen is closed. Calling back into RandR with stale pointers just segfaults the server. Signed-off-by: Keith Packard <keithp@keithp.com> Reviewed-by: Dave Airlie <airlied@redhat.com> Tested-by: Knut Petersen <knut_petersen@t-online.de>
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