Debian Boot – How to Activate Extra-Verbose Mode for Debugging

bootdebiandebuggingdmesgkernel

How do I activate extra verbosity during boot, on Debian? I removed the quiet parameter and tried to add debug but it didn't help.

My problem is that my keyboard takes 2-3 min to activate so it slows my startup tremendously since I need to unlock a partition. I would like to get the message that pops out the moment my keyboard gets activated, but removing quiet doesn't print it.

Best Answer

Here is a list of all possible boot parameters: I've never used it, but try adding ignore_loglevel.

I previously mentioned verbose, but actually that only applies to other specific kernel options like acpi, as you can read, above.

With an understanding of your exact hardware, like it seems you have, you can go even deeper with this article on kernel hacking

This file is supposed to be included in /linux/documentationn according to an article on The Linux Documentation Project (TLDP.org)

Related Question