1 files changed, 9 insertions, 1 deletions
diff --git a/src/bgi.c b/src/bgi.c
index e8a8a79..b0ed349 100644
--- a/src/bgi.c
+++ b/src/bgi.c
@@ -75,6 +75,14 @@ static void fbdev_write(fuse_req_t req, const char *buf, size_t size,
 	fb->pos += size;
 }
 
+static int wait_vblank_sync(struct kms_fb *fb)
+{
+	union drm_wait_vblank vblank = {};
+	vblank.request.type = _DRM_VBLANK_RELATIVE;
+	vblank.request.sequence = 1;
+	return ioctl(drmfd, DRM_IOCTL_WAIT_VBLANK, &vblank);
+}
+
 static int wait_vblank(struct kms_fb *fb)
 {
 	char buffer[1024];
@@ -319,7 +327,7 @@ static void fbdev_ioctl(fuse_req_t req, int cmd, void *arg,
 		break;
 	case FBIO_WAITFORVSYNC:
 		if (fb->vsync.e != NEVER)
-			wait_vblank(fb);
+			wait_vblank_sync(fb);
 		fuse_reply_ioctl(req, 0, NULL, 0);
 		break;
 	case FBIOGET_FSCREENINFO: