From 57f087731c8ab4fe78f77685f7c21ea31c090e8a Mon Sep 17 00:00:00 2001
From: lcdwiki <lcdwiki@lcdwiki.com>
Date: Thu, 4 Jul 2019 14:25:04 +0100
Subject: [PATCH] modify PI4 bug

---
 LCD35-show   | 2 ++
 LCD5-show    | 2 ++
 MHS35-show   | 2 ++
 MPI3508-show | 2 ++
 4 files changed, 8 insertions(+)

diff --git a/LCD35-show b/LCD35-show
index e91b98b..814e116 100755
--- a/LCD35-show
+++ b/LCD35-show
@@ -10,6 +10,7 @@ sudo mkdir -p /etc/X11/xorg.conf.d
 fi
 sudo cp ./usr/tft35a-overlay.dtb /boot/overlays/
 sudo cp ./usr/tft35a-overlay.dtb /boot/overlays/tft35a.dtbo
+hw_version=`tr -d '\0' < /proc/device-tree/model`
 root_dev=`grep -oPr "root=[^\s]*" /boot/cmdline.txt | awk -F= '{printf $NF}'`
 if test "$root_dev" = "/dev/mmcblk0p7";then
 sudo cp -rf ./boot/config-noobs-nomal.txt ./boot/config.txt.bak
@@ -17,6 +18,7 @@ else
 sudo cp -rf ./boot/config-nomal.txt ./boot/config.txt.bak
 sudo echo "hdmi_force_hotplug=1" >> ./boot/config.txt.bak
 fi
+[[ $hw_version =~ "Raspberry Pi 4 Model" ]] || (sed -i 's/^dtoverlay=/#&/g' ./boot/config.txt.bak;sed -i 's/^max_framebuffers=/#&/g' ./boot/config.txt.bak)
 sudo echo "dtparam=i2c_arm=on" >> ./boot/config.txt.bak
 sudo echo "dtparam=spi=on" >> ./boot/config.txt.bak
 sudo echo "enable_uart=1" >> ./boot/config.txt.bak
diff --git a/LCD5-show b/LCD5-show
index 99aa565..d967258 100755
--- a/LCD5-show
+++ b/LCD5-show
@@ -2,6 +2,7 @@
 
 sudo ./system_backup.sh
 
+hw_version=`tr -d '\0' < /proc/device-tree/model`
 root_dev=`grep -oPr "root=[^\s]*" /boot/cmdline.txt | awk -F= '{printf $NF}'`
 if test "$root_dev" = "/dev/mmcblk0p7";then
 sudo cp -rf ./boot/config-noobs-nomal.txt ./boot/config.txt.bak
@@ -9,6 +10,7 @@ else
 sudo cp -rf ./boot/config-nomal.txt ./boot/config.txt.bak
 sudo echo "hdmi_force_hotplug=1" >> ./boot/config.txt.bak
 fi
+[[ $hw_version =~ "Raspberry Pi 4 Model" ]] || (sed -i 's/^dtoverlay=/#&/g' ./boot/config.txt.bak;sed -i 's/^max_framebuffers=/#&/g' ./boot/config.txt.bak)
 sudo echo "dtparam=i2c_arm=on" >> ./boot/config.txt.bak
 sudo echo "dtparam=spi=on" >> ./boot/config.txt.bak
 sudo echo "enable_uart=1" >> ./boot/config.txt.bak
diff --git a/MHS35-show b/MHS35-show
index ad387bb..10a2623 100755
--- a/MHS35-show
+++ b/MHS35-show
@@ -11,6 +11,7 @@ fi
 sudo cp ./usr/mhs35-overlay.dtb /boot/overlays/
 sudo cp ./usr/mhs35-overlay.dtb /boot/overlays/mhs35.dtbo
 
+hw_version=`tr -d '\0' < /proc/device-tree/model`
 root_dev=`grep -oPr "root=[^\s]*" /boot/cmdline.txt | awk -F= '{printf $NF}'`
 if test "$root_dev" = "/dev/mmcblk0p7";then
 sudo cp -rf ./boot/config-noobs-nomal.txt ./boot/config.txt.bak
@@ -18,6 +19,7 @@ else
 sudo cp -rf ./boot/config-nomal.txt ./boot/config.txt.bak
 sudo echo "hdmi_force_hotplug=1" >> ./boot/config.txt.bak
 fi
+[[ $hw_version =~ "Raspberry Pi 4 Model" ]] || (sed -i 's/^dtoverlay=/#&/g' ./boot/config.txt.bak;sed -i 's/^max_framebuffers=/#&/g' ./boot/config.txt.bak)
 sudo echo "dtparam=i2c_arm=on" >> ./boot/config.txt.bak
 sudo echo "dtparam=spi=on" >> ./boot/config.txt.bak
 sudo echo "enable_uart=1" >> ./boot/config.txt.bak
diff --git a/MPI3508-show b/MPI3508-show
index b292393..56c305a 100755
--- a/MPI3508-show
+++ b/MPI3508-show
@@ -1,6 +1,7 @@
 #!/bin/bash
 sudo ./system_backup.sh
 
+hw_version=`tr -d '\0' < /proc/device-tree/model`
 root_dev=`grep -oPr "root=[^\s]*" /boot/cmdline.txt | awk -F= '{printf $NF}'`
 if test "$root_dev" = "/dev/mmcblk0p7";then
 sudo cp -rf ./boot/config-noobs-nomal.txt ./boot/config.txt.bak
@@ -8,6 +9,7 @@ else
 sudo cp -rf ./boot/config-nomal.txt ./boot/config.txt.bak
 sudo echo "hdmi_force_hotplug=1" >> ./boot/config.txt.bak
 fi
+[[ $hw_version =~ "Raspberry Pi 4 Model" ]] || (sed -i 's/^dtoverlay=/#&/g' ./boot/config.txt.bak;sed -i 's/^max_framebuffers=/#&/g' ./boot/config.txt.bak)
 sudo echo "hdmi_force_edid_audio=1" >> ./boot/config.txt.bak
 sudo echo "dtparam=i2c_arm=on" >> ./boot/config.txt.bak
 sudo echo "dtparam=spi=on" >> ./boot/config.txt.bak