Rpi Silent Boot

Basic steps: https://die-antwort.eu/techblog/2017-12-setup-raspberry-pi-for-kiosk-mode/

/boot/cmdline.txt

```
dwc_otg.lpm_enable=0 console=serial0,115200 console=tty3 quiet splash loglevel=0 logo.nologo vt.global_cursor_default=0 plymouth.ignore-serial-consoles root=PARTUUID=45acf583-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait
```

/boot/config.txt
```
# uncomment if hdmi display is not detected and composite is being output
hdmi_force_hotplug=1

# uncomment to force a specific HDMI mode (here we are forcing 800x480!)
hdmi_group=2
hdmi_mode=87
hdmi_cvt=800 480 60 6 0 0 0
hdmi_drive=1
 
max_usb_current=1
disable_splash=1

# Uncomment some or all of these to enable the optional hardware interfaces
dtparam=i2c_arm=on
dtparam=spi=on
dtoverlay=ads7846,penirq=25,speed=10000,penirq_pull=2,xohms=150
```

File: .bash_profile
```
[[ -z $DISPLAY && $XDG_VTNR -eq 1 ]] && startx >/dev/null 2>&1
```

On file: /etc/rc.local
- add before exit 0

dmesg --console-off

Add empty file: ~/.hushlogin

Add file to: /etc/x11/xorg.conf.d/99-calibration.conf
```
Section "InputClass"
        Identifier "calibration"
        MatchProduct "ADS7846 Touchscreen"
        Option "Calibration" "3853 170 288 3796"
        Option "SwapAxes" "1"
EndSection
```

Add file to: /etc/X11/openbox/autostart

```
xset s off
xset s noblank
xset -dpms

chromium-browser --disable-infobars --incognito --kiosk '$URL'
```

File: /etc/systemd/system/autologin@.service

```
[Service]
# the VT is cleared by TTYVTDisallocate
#ExecStart=-/sbin/agetty --autologin pi --noclear --noissue %I $TERM
ExecStart=-/sbin/agetty --skip-login --noclear --noissue --login-options "-f pi" %I $TERM
```