Kernel Modules 5.10 Workaround

matrixio-kernel-modules are not compatible with linux kernel 5.10

This is the workaround to downgrade your kernel:

DOWNGRADE KERNEL TO 5.4

sudo apt purge matrixio-kernel-modules
cd ~/
wget -q --show-progress -O rpi_kernel_5-4.deb http://archive.raspberrypi.org/debian/pool/main/r/raspberrypi-firmware/raspberrypi-kernel_1.20201126-1_armhf.deb
wget -q --show-progress -O rpi_kernel_headers_5-4.deb http://archive.raspberrypi.org/debian/pool/main/r/raspberrypi-firmware/raspberrypi-kernel-headers_1.20201126-1_armhf.deb
sudo apt purge raspberrypi-kernel-headers
sudo apt install ~/rpi_kernel_5-4.deb
sudo apt install ~/rpi_kernel_headers_5-4.deb
sudo apt-mark hold raspberrypi-kernel
sudo apt-mark hold raspberrypi-kernel-headers
sudo reboot
sudo apt update
sudo apt install matrixio-kernel-modules
sudo reboot

UNDO (once matrixio-kernel-modules are working again)

sudo apt-mark unhold raspberrypi-kernel
sudo apt-mark unhold raspberrypi-kernel-headers
sudo apt purge matrixio-kernel-modules
sudo apt purge raspberrypi-kernel-headers
sudo apt update && sudo apt upgrade
sudo reboot
sudo apt install matrixio-kernel-modules
sudo reboot
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