Plymouth for Khadas Edge

plymouth_khadas_edge.txt

To make plymouth work on khadas edge, the boot command line arguments must be modified to include
splash quiet plymouth.ignore-serial-consoles vt.handoff=7

(note if you need to debug, also add plymouth.debug to the above and then after boot open /var/log/plymouth-debug.log)
(verify that the above kernel command line arguments are added by cat /proc/cmdline )
(Most likely the theme used was not found or not applied fix by running
sudo update-alternatives --install /usr/share/plymouth/themes/default.plymouth default.plymouth /usr/share/plymouth/themes/spinner/spinner.plymouth 100
sudo update-initramfs -u
reboot
)

on fenix edit 
~/fenix/config/bootscripts/rk3399_autoscript.cmd
Search for line containing setenv condev 
and console=FIQ0
Remove: console=tty1
Add: splash quiet plymouth.ignore-serial-consoles vt.handoff=7
Also edit ~fenix/config/functions/build-board-deb and comment the following at the end of the file to keep the built files
#      rm -rf ${pkgdir}.deb
#      rm -rf $pkgdir
make board-deb
cd ~/fenix/build/images/.tmp/linux-board-package-bionic-edge_0.7_arm64/boot
copy and replace boot.scr to /boot on the target Khadas



Themes must be installed using sudo apt install plymouth-themes
to create missing plymouth default files
and then sudo update-alternatives --install /usr/share/plymouth/themes/default.plymouth default.plymouth /usr/share/plymouth/themes/spinner/spinner.plymouth 100

sudo update-initramfs -u

reboot

To select a different theme
sudo update-alternatives --install /usr/share/plymouth/themes/default.plymouth default.plymouth /usr/share/plymouth/themes/spinner/spinner.plymouth 100

sudo update-alternatives --config default.plymouth
select the right number

sudo update-initramfs -u
reboot

//FOR MORE DEBUGGING
To build plymouth 
sudo apt install build-essential autoconf gettext autopoint intltool pkg-config automake libtool libpng-dev libudev-dev libcairo2-dev libpango1.0-dev libgtk-3-dev xsltproc docbook-xsl

git clone https://github.com/freedesktop/plymouth
cd plymouth
git checkout tags/0.9.3
./autogen.sh
./configure  --prefix=/usr --sysconfdir=/etc --localstatedir=/var --enable-tracing --disable-tests --without-boot-entry  --without-default-plugin --with-logo=%{_datadir}/pixmaps/system-logo-white.png --with-background-start-color-stop=0x0073B3 --with-background-end-color-stop=0x00457E --with-background-color=0x3391cd --enable-gdm-transition --with-system-root-install --with-rhgb-compat-link
sudo make install

Also delete the plymouth libraries installed by default
sudo rm /lib/aarch64-linux-gnu/libply*



sudo plymouthd --no-daemon --debug --kernel-command-line="splash quiet plymouth.ignore-serial-consoles vt.handoff=7"