Boot error initramfs & plymouth splash screen

After a :

update-initramfs -k all -c -t in chroot Cubic environnement, i don't have the Initramfs : unpacking failded : Decoding failed error anymore.

But i'm still in text mode cdrom check integrity in UEFI mode with Virtualbox or laptop mode

I also followed these actions :

https://answers.launchpad.net/cubic/+question/692285

After executing commands in my last post : https://answers.launchpad.net/cubic/+question/692285 the error message came back

Initramfs : unpacking failded : Decoding failed

But the installation process installation continue and works fine.

In verbose mode it's the plymouth error message

https://askubuntu.com/questions/1241050/booting-ubuntu-20-04-live-server-amd64-iso-on-vmware-virtual-machine-fails

ln: /tmp/mountroot-fail-hooks.d//scripts/init-premount/lvm2: No such file or directory
mount: mounting /cow on /root/cow failed: No such file or directory
Checking integrity, this may take some time
Connecting to plymouth: Connection refused

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1835660

About the ISO boot "error" Initramfs : unpacking failded : Decoding failed

Hi,

On my first bug with the error : Initramfs : unpacking failded : Decoding failed

I did this in chroot environment :

sed -i 's/COMPRESS=lz4/COMPRESS=gzip/g' /etc/initramfs-tools/initramfs.conf

update-initramfs -c -k $(uname -r)

And use gzip compression in Cubic.

On boot there is no error anymore concerning Initrams decoding

For providing more information on Initramfs error, you can use lz4 compression in Cubic. Just change lz4 to gzip in /etc/initramfs-tools/initramfs.conf in chroot environment

It sounds like there are two errors here:
1. initramfs
2. plymouth

[1]
Regarding the initramfs error...

Bug #1835660 seems to indicate that this error can be ignored? But in your case, it sounds like the bug is preventing you from booting up?

Did changing the compression to gzip fix this bug for you?

[2]
Are you still experiencing an error in Plymouth, or was that also resolved with the above change?

Hi Cubic PPA :

It sounds like there are two errors here:
1. initramfs
2. plymouth

Yes i have 2 issue

[1]
Yes if i change lz4 to gzip in chroot env in /etc/initramfs-tools/initramfs.conf the bug is fixed

[2]
I don't know if it is an error, but in UEFI mode plymouth is in text mode for the error checking ISO. In legacy mode plymouth is charging plymouth-theme-spinner. I don't know why i am in text mode in UEFI mode with the same custom ISO. The only error log i can see is " Connecting to plymouth: Connection refused"

Hi Cubic PPA,

for issue [2]

I add noprompt noshell at the end of line in my grub.cfg and txt.cfg

quiet splash noprompt noshell --

now the plymouth theme is charging.

Hi Cubic PPA,

for issue [2]

I add noprompt noshell at the end of line in my grub.cfg and txt.cfg

quiet splash noprompt noshell --

now the plymouth theme is charging.

Ok. Good.