setup: Bullseye (nasty) patch: force rollback to kernel 5.15.32.

Author: f-laurens

setup

@@ -191,7 +191,31 @@ echo "Installing required packages."
 sudo apt-get update -y
 sudo apt-get dist-upgrade -y
 sudo apt-get install --no-install-recommends -y postgresql libpq-dev git python3 python3-venv python3-dev gettext nginx openssl libssl-dev libffi-dev libmpg123-dev libasound2-dev libatlas-base-dev libgfortran5 libopenblas-dev liblapack-dev zram-tools
-sudo apt-get install --no-install-recommends -y gcc make raspberrypi-kernel-headers
+sudo apt-get install --no-install-recommends -y gcc make
+os_version=$(. /etc/os-release && echo "$VERSION_ID")
+if [ "${os_version}" == "11"  ]
+then
+    # Bullseye (nasty) patch: force rollback to kernel 5.15.32 (20220331)
+    # since wm8960 driver is incompatible with later versions.
+    kver="1.20220331-1"
+    if [ "$(uname -m)" == "aarch64" ]
+    then
+        karch="arm64"
+    else
+        karch="armhf"
+    fi
+    cd /tmp
+    wget https://archive.raspberrypi.org/debian/pool/main/r/raspberrypi-firmware/raspberrypi-kernel_${kver}_${karch}.deb
+    sudo dpkg -i raspberrypi-kernel_${kver}_${karch}.deb
+    rm raspberrypi-kernel_${kver}_${karch}.deb
+    sudo apt-mark hold raspberrypi-kernel
+    wget https://archive.raspberrypi.org/debian/pool/main/r/raspberrypi-firmware/raspberrypi-kernel-headers_${kver}_${karch}.deb
+    sudo dpkg -i raspberrypi-kernel-headers_${kver}_${karch}.deb
+    rm raspberrypi-kernel-headers_${kver}_${karch}.deb
+    sudo apt-mark hold raspberrypi-kernel-headers
+else
+    sudo apt-get install --no-install-recommends -y raspberrypi-kernel-headers
+fi
 
 build_and_install_driver() {
     for dir in /lib/modules/*/build