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Re: Hide boot process logs


From: Tobias Geerinckx-Rice
Subject: Re: Hide boot process logs
Date: Tue, 18 Aug 2020 18:04:05 +0200

Hi Reza!

Reza Alizadeh Majd 写道:
I want to hide the boot process logs in Guix, having a quick search I found that I can use following options in grub configuration file:


GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

Forget this line. No part of it makes sense on Guix (except ‘quiet’, which is handled by the kernel itself, and see below for that).

GRUB_CMDLINE_LINUX_DEFAULT (and similar-looking variables) is used only by the ‘update-grub’ utility on some distributions that uses a bash configuration file to configure a bash script that creates the final (bash-like) grub.cfg.

As it sounds, it's a pretty horrible system, and it's not used by Guix at all. grub.cfg is generated entirely by Guix itself, based on your operating-system record and previous system generations.

Adding ‘splash’ is equally specific to some other distribution, and has no effect on Guix System.

There is no splash screen code in Guix. Plymouth has been packaged, but there's no code to launch it at boot. I haven't even managed to make a ‘flicker-free boot’ happen on my i915.

the problem is that based on current bootloader definition, there is no option exposed for additional grub configurations (or I might missed
the proper option for this).

 (operating-system
   ...
   (kernel-arguments '("quiet")))

This will hide many but not all messages. A silent boot, with or without a splash screen, is currently not a feature of Guix.

Kind regards,

T G-R

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