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vrgovinda

Member

Registered: 2023-06-14

Posts: 18  

[SOLVED] boot log in daedalus

Hi.
I'm on Devuan Daedalus.

I'd like to see the entire boot log that scrolls during system boot.

Is dmesg the command?

I am afraid it doesn't show up everything.
Please guide me.

Last edited by vrgovinda (2024-01-15 21:43:43)

GlennW

Member

From: Brisbane, Australia

Registered: 2019-07-18

Posts: 590  

Re: [SOLVED] boot log in daedalus

Hi, one way I do that is by removing the term 'quiet' from the grub command line. use 'e' to temporarily change the boot line.

Until X starts with sddm I can see the text.

If the chars are too big, you may add a vga=794
check here...

http://pierre.baudu.in/other/grub.vga.modes.html

sorry for the late edit, I use this to look after the tty s are set or ctrl+alt+Fx (1-6).

dmesg | grep -i "erro\|fail\|warn"

Last edited by GlennW (2024-01-15 21:56:32)

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emanym

Member

Registered: 2018-04-08

Posts: 35  

Re: [SOLVED] boot log in daedalus

Hi

Is dmesg the command?

Yes -- on a console you should probably use:

dmesg | less

In a terminal it depends on how many lines you can scroll back.

It should start with something like:

[    0.000000] Linux version 5.10.0-8-amd64 (debian-kernel@lists.debian.org) (gcc-10 (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2) #1 SMP Debian 5.10.46-4 (2021-08-03)
[    0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-5.10.0-8-amd64 root= ....

ralph.ronnquist

Administrator

From: Battery Point, Tasmania, AUS

Registered: 2016-11-30

Posts: 1,133  

Re: [SOLVED] boot log in daedalus

bootlogd, if installed, kicks in after the devnodes are set up.

Iif you have another computer, you could set up a netconsole and then capture it there. Possibly with some clever hands-on, you could point that to a localhost console started (as early as possible) by initrd scripting. That would of course only capture from when that console starts.

Any bootloader  (or earlier) output before the kernel is started might require a video camera, possibly even a fast-recording one.