Reviewed-by: Jeff Fan <[email protected]>

-----Original Message-----
From: Ni, Ruiyu 
Sent: Friday, January 08, 2016 3:14 PM
To: [email protected]
Cc: Ni, Ruiyu; Fan, Jeff
Subject: [Patch] MdeModulePkg: Fix GraphicsConsole driver resolution out of 
sync issue

When the GOP doesn't support the resolution specified by 
PcdVideoHorizontalResolution and PcdVideoVerticalResolution, the code tries to 
set the resolution to 800x600 but uses the resolution equals to the PCD when 
calculating the text print position.
The patch fixes the bug by updating the resolution to 800x600 for this case.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <[email protected]>
Cc: Jeff Fan <[email protected]>
---
 .../Universal/Console/GraphicsConsoleDxe/GraphicsConsole.c        | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git 
a/MdeModulePkg/Universal/Console/GraphicsConsoleDxe/GraphicsConsole.c 
b/MdeModulePkg/Universal/Console/GraphicsConsoleDxe/GraphicsConsole.c
index 74218c8..7b1c37b 100644
--- a/MdeModulePkg/Universal/Console/GraphicsConsoleDxe/GraphicsConsole.c
+++ b/MdeModulePkg/Universal/Console/GraphicsConsoleDxe/GraphicsConsole.
+++ c
@@ -1,7 +1,7 @@
 /** @file
   This is the main routine for initializing the Graphics Console support 
routines.
 
-Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials  are licensed and made available 
under the terms and conditions of the BSD License  which accompanies this 
distribution.  The full text of the license may be found at @@ -480,10 +480,12 
@@ GraphicsConsoleControllerDriverStart (
         //
         // if not supporting current mode, try 800x600 which is required by 
UEFI/EFI spec
         //
+        HorizontalResolution = 800;
+        VerticalResolution   = 600;
         Status = CheckModeSupported (
                      Private->GraphicsOutput,
-                     800,
-                     600,
+                     HorizontalResolution,
+                     VerticalResolution,
                      &ModeNumber
                      );
         Mode = Private->GraphicsOutput->Mode;
--
2.6.2.windows.1

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