troubleshooting

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ls -l /etc/alternatives/default.plymouth

I want to see whether it points to

cat /etc/alternatives/default.plymouth

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and show me the output

cat /etc/alternatives/default.plymouth

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look inside the TUX theme file itself:

cat /usr/share/plymouth/themes/tux/tux.plymouth

verify that it references the correct script.

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   Then:  cat /usr/share/plymouth/themes/tux/tux.script

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to verify that the script is loading exactly that image ...... knoppix-logo-png_seeklogo-644418.png ........ and from the correct path :

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tell me what theme name it reports

plymouth-set-default-theme   OR

lists themes

plymouth-set-default-theme -l

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What I would like to see from KNOPPIX9.1

send me the complete output

cat /etc/default/grub

shows the actual kernel parameters currently in use

cat /proc/cmdline

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What I would also like to see  from the Zorin machine

cat /proc/cmdline

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You created a custom theme containing:  knoppix-logo-png_seeklogo-644418.png  inside:

/usr/share/plymouth/themes/tux/

and Plymouth itself does not seem to display anything when tested manually.

This makes me wonder whether the issue is not GRUB at all, but rather that the custom tux.script is not loading the image correctly.

To be honest, at this moment I am more suspicious of the TUX theme itself than of GRUB.

That's why I am still very interested in seeing:

cat /usr/share/plymouth/themes/tux/tux.plymouth

and

cat /usr/share/plymouth/themes/tux/tux.script

because the answer may be hiding inside those two small files

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Grandpa Norizan's Master Plan 🐧

I think the best strategy now is:

Phase 1

• Obtain KNOPPIX GRUB configuration.
• Obtain KNOPPIX kernel command line.

Phase 2

• Compare them with Zorin.

Phase 3

• Inspect tux.plymouth and tux.script.

Phase 4

• Modify Zorin so that it behaves as closely as possible to KNOPPIX during boot.

And between you and me... 😄

I have a feeling that the penguin is already sitting somewhere inside your Zorin machine. We just need to discover whether :

he's being hidden by GRUB, 

hidden by Plymouth, or 

hidden by a tiny mistake inside tux.script.

please send me the output of:

cat /etc/default/grub  from KNOPPIX 9.1

cat /proc/cmdline  from KNOPPIX 9.1

We'll compare them line-by-line like two detectives examining clues from the scene of a penguin disappearance! 😄🐧🔍