From 1f30a2c0f64dd0d5780e2756fa0b92f1aaaea2b5 Mon Sep 17 00:00:00 2001
From: Michael Prokop <mika@grml.org>
Date: Fri, 27 Nov 2020 18:13:11 +0100
Subject: [PATCH] Unload tpm module to support booting ISOs with GRUB 2.04 on
 UEFI systems

See https://help.ubuntu.com/community/Grub2/ISOBoot#Menuentry_Example

Closes: #975835
Thanks: Vasek Opekar <opekar@eccam.com> for the bug report
---
 42_grml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/42_grml b/42_grml
index 96e5e1f..4a76432 100755
--- a/42_grml
+++ b/42_grml
@@ -116,6 +116,8 @@ ${grub_prep}
         export iso_path
         kernelopts=" $CUSTOM_BOOTOPTIONS $additional_param "
         export kernelopts
+        # support booting recent GRUB versions on UEFI systems
+        rmmod tpm
         loopback loop "${rel_dirname%/}/$grml"
         set root=(loop)
         configfile /boot/grub/loopback.cfg
-- 
2.1.4