How to disable GUI for password prompt for encrypted LVM volumes on boot?

Question

How to disable GUI for password prompt for encrypted LVM volumes on boot and how to remove all strings on console output? I just need cleared prompt with blinking cursor.

And yes, I want to confuse anyone who tries to turn on my computer.

Answer 1

This should all be handled by Plymouth

You could either:

• change the active splash theme

or

• deactivate the splash/Plymouth GRUB_CMDLINE_LINUX_DEFAULT="noplymouth"
• and disable console output using GRUB_CMDLINE_LINUX="console=tty12"