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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