Alexei:
May I know that your BIOS includes Consplitter driver?
Thanks
Elvin
-----Original Message-----
From: Alexei Fedorov [mailto:alexei.fedo...@arm.com]
Sent: Thursday, December 06, 2012 1:05 AM
To: edk2-devel@lists.sourceforge.net
Subject: [edk2] Graphics Console produces no output in RELEASE build
Hi,
I found an issue with graphics console code in
GraphicsConsoleControllerDriverStart() in
\edk2\MdeModulePkg\Universal\Console\GraphicsConsoleDxe\GraphicsConsole.c
DEBUG_CODE_BEGIN ();
Status = GraphicsConsoleConOutSetMode (&Private->SimpleTextOutput, 0);
if (EFI_ERROR (Status)) {
goto Error;
}
Status = GraphicsConsoleConOutOutputString (&Private->SimpleTextOutput,
(CHAR16 *)L"Graphics Console Started\n\r");
if (EFI_ERROR (Status)) {
goto Error;
}
DEBUG_CODE_END ();
1. In RELEASE build GraphicsConsoleConOutSetMode() won't be called &
graphics console mode won't be set. This results in blank screen & no output
from Eshell/Ebl in UEFI RELEASE builds.
2. GraphicsConsoleConOutSetMode() is always setting default mode 0 with
80x25 regardless of the current high resolution video mode & this displays a
small text window in the middle of the screen with 1680x1050.
The possible fix might include:
1. Remove
DEBUG_CODE_BEGIN ();
before
Status = GraphicsConsoleConOutSetMode()
And put it before:
Status = GraphicsConsoleConOutOutputString()
2. Call GraphicsConsoleConOutSetMode() with 2nd parameter (MaxMode-1) which is
the text mode calculated from the current screen resolution.
Can anyone comment on that?
Thanks.
Alexei.
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