Kernels.txt

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Creation-Date: 2016-10-27T21:47:12+02:00

====== Kernels ======
Created torsdag 27 oktober 2016

**We'll install two Kernels - the Zen kernel, which is a good all' round desktop kernel, and the Long Time Support (lts) kernel in case we should ever get a Kernel panic.  **

== Installation ==
**# Both kernels comes from the official repository **
$ pacman -S linux-zen linux-lts 

===== Grub Configuration =====
**# Edit the Grub configuration in **///etc/default/grub //
**# We'll add a parameter and disable the sub-tree feature.**

**#** **Kernel parameters can be added to the** //GRUB_CMDLINE_LINUX_DEFAULT=// 
**Ex.** 	//GRUB_CMDLINE_LINUX_DEFAULT="quiet splash //parameter1 parameter2//"//

== I/O Scheduler ==
**#** **Enable the BFQ scheduler**
{{{code: lang="texinfo" linenumbers="True"
GRUB_CMDLINE_LINUX_DEFAULT="elevator=bfq"
}}}


== Disable Sub-tree ==
**# Grub, by default, groups the **//linux//** and **//linux-lts//** kernel in a category tree (subcategory).** 
**# To disable this, add the following to the Grub configuration**
{{{code: lang="texinfo" linenumbers="True"
GRUB_DISABLE_SUBMENU=y
}}}


== Update Grub ==
**# Regenerate the configuration file for the above settings to take affect**
$ grub-mkconfig -o /boot/grub/grub.cfg


==== Remove old kernels ====
**#** **Reboot and check if everything works okay. If so, it is safe to remove** //linux //**and**// linux-headers//