Kernel on Kenno's Open Note

How to rebuild initramfs on Fedora

Wed, 21 Aug 2024 21:42:21 +1000

Earlier today while performing the update on my Fedora desktop, I encountered an issue with the new kernel update. As a result, the initramfs was not generated for the new installed kernel. So, I’ll share with you how to rebuild or generate the initramfs while fixing real issue on my Fedora workstation.

First, here is an output showing the source of the issue. It might not be clear of what’s going on, but that’s okay as it’s not the main focus of this blog post.

How to remove old kernels on Void linux

Sat, 10 Jul 2021 21:06:03 +1000

I have a Void linux VM which only gets turned on once in every month. Today, when I booted up and updated the packages on this VM, I noticed that there are many old kernels installed. As a seasonal Void user, I had no clue on how to remove older kernels.

Fortunately, a quick Google search pointed me to a video: VOID Linux: Removing old kernels with vkpurge. Basically, Void comes with a pre-installed utility program called vkpurge. (man vkpurge for more info.)

Pairing Bluetooth Mouse on Gentoo

Sun, 13 Sep 2020 13:27:58 +1000

Just a few a days ago, I wrote a blog post about Pairing Bluetooth Mouse on Command Line on a Fedora laptop. So why do I need to write another post about doing the same thing on Gentoo? Well, as it turned out, I need a bit more than just turning on the bluetooth service and pairing the mouse. My Gentoo’s installation is very minimal, and I think this gives me an excuse to document on how I’d solve or get this working on Gentoo.

Remove Kernels on Fedora

Sun, 26 Apr 2020 00:11:01 +1000

I’m still running Fedora 31 on my main desktop though Fedora 32 beta has been out for a while. The only reason that stops me from jumping to F32 now is because ZFS 0.8.3 is not compatible with the kernel 5.6.* on F32. Rumor has it, ZFS 0.8.4 will support kernel 5.6.

Tonight, while doing the system update with sudo dnf update -y on F31 desktop, I noticed that the kernel for F31 is now kernel-5.6.6-200.fc31.x86_64. Wait, what? I didn’t interrupt the update process, and let it run till finish.

Gentoo Luks Fails Kernel 5.6

Sat, 11 Apr 2020 01:05:06 +1000

My Gentoo based Linux laptop which is still running the older kernel 5.3.15. A short while back, I had a failed attempt to upgrade the kernel to 5.4.2 as the disk which encrypted with dm-crypt couldn’t be decrypted on boot. Since the older kernel 5.3.15 was working fine and free time was I what I lacked of, it seemed logical to just not doing anything about it.

Today while updating all the packages on my Gentoo laptop, I notice there was a newer kernel available: 5.6.3. So let’s try to install this newest kernel again and see if the issue with Luks/dm-crypt still persists.

Upgrading Kernel Issues and Fixes on Gentoo

Tue, 06 Aug 2019 23:33:03 +1000

Today I decided to upgrade the kernel (gentoo-sources) from 4.19.64 to 5.2.6 on my old ThinkPad X220. Apart from a few hiccups, everything went quite smoothly. I already have a blog post about upgrading the kernel on Gentoo, so I’ll skip many things here.

First, ensure the sys-kernel/gentoo-sources-5.2.6 is installed:

# emerge -av =sys-kernel/gentoo-sources-5.26

After the above package installed, we should be able to list it:

~ ❯❯❯ eselect kernel list
Available kernel symlink targets:
  [1]   linux-4.14.63-gentoo-r1
  [2]   linux-4.14.65-gentoo
  [3]   linux-4.14.78-gentoo
  [4]   linux-4.14.83-gentoo
  [5]   linux-4.19.27-gentoo-r1
  [6]   linux-4.19.44-gentoo
  [7]   linux-4.19.52-gentoo
  [8]   linux-4.19.57-gentoo
  [9]   linux-4.19.64-gentoo *
  [10]  linux-5.2.6-gentoo

Let’s select linux-5.2.6-gentoo as the version we’d like to switch to:

Upgrade Kernel on Gentoo

Mon, 14 Jan 2019 20:17:30 +1100

Today I’m going to document how I built and installed kernel 4.20.1 a Gentoo laptop, Dell XPS 15 9570.

This blog post is not intended to be a tutorial or even a guide. I’m very new to Gentoo, and have been spoiled by Ubuntu and Fedora for not needing to compile my own kernel. :)

Anyhow, it’s very likely that I’ll need to compile the kernel again on Gentoo, and therefore I think having some sorts of documents is better than nothing at all.

Kernel upgrading breaks my SuSE box

Thu, 02 Nov 2006 07:20:47 +0000

The other day, my SuSE 10.1 notifies that there were updates available including bug fixes and new kernel. I thought it might be convenient if I just click on select all, and update button. So, I did that and went out to school. When I came back home, the update was nicely done. There was no indication to ask me to restart the computer (as most other OSes do), but I thought it’d be good restart it anyway.