Orginal image download URL
https://downloads.raspberrypi.org/raspios_full_armhf/images/raspios_full_armhf-2021-05-28/2021-05-07-raspios-buster-armhf-full.zip
Modification request list
Packages in devterm apt source
- devterm-audio-patch (check whether the 3.5 audio interface is plugged in, pull up a certain GPIO)
- devterm-fan-temp-daemon-rpi (detect the temperature of rpi, raise the io drive fan, written in python)
- devterm-kernel-rpi (modified kernel, 4.x series)
- devterm-keyboard-firmware (Devterm keyboard firmware flashing tool, Advanced users only!)
- devterm-thermal-printer (thermal printer program and systemd scripts)
- devterm-thermal-printer-cups (CUPS filter for the thermal printer, and add the thermal printer to cups, so devterm printer can be seen in chromium)
Add clockworkpi to apt source list
see https://github.com/clockworkpi/apt/tree/main/debian
wget -O - https://raw.githubusercontent.com/clockworkpi/apt/main/debian/KEY.gpg | sudo apt-key add -
echo "deb https://raw.githubusercontent.com/clockworkpi/apt/main/debian/ stable main" | sudo tee -a /etc/apt/sources.list.d/clockworkpi.list
Config xrandr
sudo bash -c 'cat << EOF > etc/X11/Xsession.d/100custom_xrandr
xrandr --output DSI-1 --rotate right
EOF'
Config lightdm
in /etc/lightdm/lightdm.conf
greeter-setup-script=/etc/lightdm/setup.sh
setup.sh
#!/bin/bash
xrandr --output DSI-1 --rotate right
exit 0
sudo chmod +x etc/lightdm/setup.sh
Modify /etc/dphys-swapfile
CONF_SWAPSIZE=512
Change the default wallpaper
The following files changed
- /etc/xdg/pcmanfm/LXDE-pi/desktop-items-0.conf
- /etc/xdg/pcmanfm/LXDE-pi/desktop-items-1.conf
- /etc/lightdm/pi-greeter.conf
- /home/pi/.config/pcmanfm/LXDE-pi/desktop-items-0.conf
Delete wallpaper address temple.jpg
Modify the desktop_bg
color to #202020
config.txt
Add dtparam=audio=on
to solve the problem of no sound card under HDMI
/etc/hostname to clockworkpi
/boot/cmdline.txt ,add fbcon=rotate:1, remove quiet
Image download url
https://forum.clockworkpi.com/t/devterm-os-cm3-image-files/7151/1