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41 lines
1.5 KiB
41 lines
1.5 KiB
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 |
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From: Hans de Goede <hdegoede@redhat.com> |
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Date: Fri, 28 Jan 2022 11:30:33 +0100 |
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Subject: [PATCH] EFI: suppress the "Welcome to GRUB!" message in EFI builds |
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Grub EFI builds are now often used in combination with flicker-free |
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boot, but this breaks with upstream grub because the "Welcome to GRUB!" |
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message will kick the EFI fb into text mode and show the msg, |
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breaking the flicker-free experience. |
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EFI systems are so fast, that when the menu or the countdown are enabled |
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the message will be immediately overwritten, so in these cases not |
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printing the message does not matter. |
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And in case when the timeout_style is set to TIMEOUT_STYLE_HIDDEN, |
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the user has asked grub to be quiet (for example to allow flickfree |
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boot) annd thus the message should not be printed. |
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Signed-off-by: Hans de Goede <hdegoede@redhat.com> |
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--- |
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grub-core/kern/main.c | 3 +++ |
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1 file changed, 3 insertions(+) |
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diff --git a/grub-core/kern/main.c b/grub-core/kern/main.c |
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index 3fc3401472..993b8a8598 100644 |
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--- a/grub-core/kern/main.c |
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+++ b/grub-core/kern/main.c |
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@@ -317,10 +317,13 @@ grub_main (void) |
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grub_boot_time ("After machine init."); |
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+ /* This breaks flicker-free boot on EFI systems, so disable it there. */ |
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+#ifndef GRUB_MACHINE_EFI |
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/* Hello. */ |
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grub_setcolorstate (GRUB_TERM_COLOR_HIGHLIGHT); |
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grub_printf ("Welcome to GRUB!\n\n"); |
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grub_setcolorstate (GRUB_TERM_COLOR_STANDARD); |
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+#endif |
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/* Init verifiers API. */ |
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grub_verifiers_init ();
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