## Copyright (C) 2019 - 2024 ENCRYPTED SUPPORT LP ## See the file COPYING for copying conditions. ## Prevent sensitive kernel information leaks in the console during boot. ## Must be used in combination with the kernel.printk sysctl. ## See /usr/lib/sysctl.d/30_silent-kernel-printk.conf for implementation. ## ## https://www.kernel.org/doc/html/latest/core-api/printk-basics.html ## https://wiki.archlinux.org/title/silent_boot ## ## For easier debugging, these are not applied to the recovery boot option. ## Switch the pair of commands to universally apply parameters to all boot options. ## GRUB_CMDLINE_LINUX_DEFAULT="$GRUB_CMDLINE_LINUX_DEFAULT loglevel=0" GRUB_CMDLINE_LINUX_DEFAULT="$GRUB_CMDLINE_LINUX_DEFAULT quiet" #GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX loglevel=0" #GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX quiet" ## For Increased Log Verbosity: ## Adjust (or comment out) the kernel.printk sysctl in /usr/lib/sysctl.d/30_silent-kernel-printk.conf. ## Alternatively, installing the debug-misc package will undo these settings.