Annoying log messages.

[leyvi]

I'd like to clarify: this is entirely a matter of preference, my system works fine. On boot, I get prompted for the password needed to decrypt my root filesystem, and then my kernel tries to probe a bunch of USB devices and logs all the warnings and errors to the terminal I'm entering my password on. This is harmless (it's mostly just checking if my charging cable is actually a keyboard or a smartphone), but I don't like looking at those while I'm typing my password. I'd still like those messages to be logged somewhere, just in case. Is there a kernel argument for that?

[alamahant]

To disable kernel messages on the console try

Code: Select all

echo "kernel.printk = 1 4 1 7" | sudo tee /etc/sysctl.d/no-console-messages.conf
sudo sysctl -p /etc/sysctl.d/no-console-messages.conf

They are still logged in dmesg.

[NeddySeagoon]

leyvi,

What alamahant suggested is close but it will be too late for you.
/etc is on the root filesystem so cannot be read until after root is mounted.

However, most sysctls can be passed on the kernel command line too.
That will be early enough for you.
It will be somewhere in /usr/src/linux/Documentation/Admin-guide/kernel-parameters
Check the spelling, that's from memory.

[runem]

You could pass the option 'quiet' to the boot loader. That will silence most messages. It removes the Tux logo too, in case you have that configured.

[leyvi]

Will the loglevel option accomplish what I want?