I try to use the vertical synchronization on a program which use the functions of openGL (glXWaitVideoSyncSGI), but the driver drm.ko does a wait (DRM_WAIT_ON, function : drm_wait_vblank, file : drm_irq.c) on the crtc 0 and does a wake up (DRM_WAKEUP) on the crtc 1 so, I haven't synchronisation on my display, the wait take 3 secondes (3*DRM_HZ)
So I would like to know how to resolve this problem of crtc. I would like that the wait and the wake up use the same crtc (1). Somebody can help me ?
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