calculate-overlay/sys-boot/grub/files/gfxpayload.patch

From e2d5bf1bc6aaaabeba538c1ca94ea8601e4e1474 Mon Sep 17 00:00:00 2001
From: Mike Gilbert <floppym@gentoo.org>
Date: Thu, 16 Oct 2014 23:43:51 -0400
Subject: [PATCH] 10_linux: Default gfxpayload=keep only when booting using efi

vesafb seems to be unreliable when using BIOS compat mode.

---
 util/grub.d/10_linux.in | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/util/grub.d/10_linux.in b/util/grub.d/10_linux.in
index d2e2a8f..a54b888 100644
--- a/util/grub.d/10_linux.in
+++ b/util/grub.d/10_linux.in
@@ -104,7 +104,9 @@ linux_entry ()
       echo "	load_video" | sed "s/^/$submenu_indentation/"
       if grep -qx "CONFIG_FB_EFI=y" "${config}" 2> /dev/null \
 	  && grep -qx "CONFIG_VT_HW_CONSOLE_BINDING=y" "${config}" 2> /dev/null; then
-	  echo "	set gfxpayload=keep" | sed "s/^/$submenu_indentation/"
+	  echo '	if [ "x$grub_platform" = xefi ]; then' | sed "s/^/$submenu_indentation/"
+	  echo "		set gfxpayload=keep" | sed "s/^/$submenu_indentation/"
+	  echo '	fi' | sed "s/^/$submenu_indentation/"
       fi
   else
       if [ "x$GRUB_GFXPAYLOAD_LINUX" != xtext ]; then
-- 
2.7.2