From 93cb3c8cafa91f05de66dee5d5738a24db039006 Mon Sep 17 00:00:00 2001
From: Sameeh Jubran <sameeh@daynix.com>
Date: Thu, 13 Oct 2016 16:29:18 +0300
Subject: [PATCH] Call "DxgkCbAcquirePostDisplayOwnership" when changing Power
 State to D0

Starting with Windows Display Driver Model (WDDM) 1.2, if the
DevicePowerState parameter is set to PowerDeviceD0, the display miniport
driver should call DxgkCbAcquirePostDisplayOwnership to query the
information about the display mode.

This patch fixies this bug:
https://bugzilla.redhat.com/show_bug.cgi?id=1202267

Signed-off-by: Sameeh Jubran <sameeh@daynix.com>
Acked-by: Frediano Ziglio <fziglio@redhat.com>
---
 qxldod/QxlDod.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/qxldod/QxlDod.cpp b/qxldod/QxlDod.cpp
index 5b42731..eb88744 100755
--- a/qxldod/QxlDod.cpp
+++ b/qxldod/QxlDod.cpp
@@ -2614,7 +2614,10 @@ NTSTATUS VgaDevice::SetPowerState(_In_  DEVICE_POWER_STATE DevicePowerState, DXG
     switch (DevicePowerState)
     {
         case PowerDeviceUnspecified: 
-        case PowerDeviceD0: regs.Ebx |= 0x1; break;
+        case PowerDeviceD0:
+            regs.Ebx |= 0x1;
+            AcquireDisplayInfo(*(pDispInfo));
+            break;
         case PowerDeviceD1:
         case PowerDeviceD2: 
         case PowerDeviceD3: regs.Ebx |= 0x400; break;