Bug 889192 - Call blank instead of SetEnabled for initial display power up, r=vlad

widget/gonk/libdisplay/GonkDisplayJB.cpp

@@ -88,7 +88,8 @@ GonkDisplayJB::GonkDisplayJB()
     mSTClient = stc;
 
     mList = (hwc_display_contents_1_t *)malloc(sizeof(*mList) + (sizeof(hwc_layer_1_t)*2));
-    SetEnabled(true);
+    if (mHwc)
+        mHwc->blank(mHwc, HWC_DISPLAY_PRIMARY, 0);
 
     status_t error;
     mBootAnimBuffer = mAlloc->createGraphicBuffer(mWidth, mHeight, surfaceformat, GRALLOC_USAGE_HW_FB | GRALLOC_USAGE_HW_RENDER | GRALLOC_USAGE_HW_COMPOSER, &error);