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Auto switch audio output when a new Bluetooth device connects

Depending on the distro or DE/WM you are running and which programs you are using to manage your audio you maybe run into the hassle of having to switch audio outputs each time you connect a bluetooth device (headset/speaker). You can in fact make pulseaudio to autoswitch when connection is established and not do it manually.

To accomplish this you just need to check a condition in the default.pa config file located in /etc/pulse/ directory on your install and add the following line load-module module-switch-on-connect like in the code snippet below:

...

### Automatically load driver modules for Bluetooth hardware

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How to identify and rebuild packages when a new version of Python is released

2021-12-12

Python 3.10 is now in [core].

You may need to rebuild any Python packages you've installed from the AUR. To get a list of them, you can run:

pacman -Qoq /usr/lib/python3.9

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We have deployed a couple of long-running Raspberry Pis equipped with cameras and sensors reporting into our network 24/7. All these are under uptime monitoring for us to keep track of the network availability.

From to time one of our Raspberry Pis freezes in the field either because of a kernel or a hardware issue. In that case there is nothing that can be done with software anymore. You can’t connect to it, can’t ping the Pi – It becomes impossible to send it a restart command in any way to bring it back to normal operation. Debugging into these events you might find indications of such as freeze in the /var/log/kernel.log file, and only manual powering down, and powering up again brought it back to live.

One little known Pi features is a builtin hardware watchdog. This little hardware service will once enabled watch the system activity and automatically power cycle the Raspberry Pi once it gets stuck.

It’s done in few steps directly on a terminal on your Pi:

1. Enable the hardware watchdog on your Pi a

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https://haydenjames.io/raspberry-pi-performance-add-zram-kernel-parameters/

https://www.techrepublic.com/article/how-to-enable-the-zram-module-for-faster-swapping-on-linux/

https://ikarus.sg/using-zram-to-get-more-out-of-your-raspberry-pi/

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ELECOM Trackball Mouse HUGE Trackball

Needed to remap keys on my ELECOM Huge Trackball, so I wrote a .conf file to be loaded at boot by X.

The ELECOM Huge has 12 keys you can assign. I will be remapping Fn1 and Fn2 which are near my index finger to be used as regular Left Click and Middle Click

Code	Default Key	Remap Key
1	Left	Left
2	Middle	Middle

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foolproof step by step

1. sudo pacman -Syu base-devel devtools. This will pull in the necessary dependencies to build Arch packages.
2. pkgctl repo clone --protocol=https linux. This will grab the PKGBUILD for the linux package. There should now be a linux folder in your current directory.
3. Visit https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=1c3366abdbe884 and download the patch by right-clicking the "patch" link next to the commit id and save as.
4. Place the downloaded patch into the linux folder. It should be named d39a2734bf6221a1a4fe42eea1dd6a17f08ebf5b..1c3366abdbe884be62e5a7502b4db758aa3974c6.patch, but it really doesn't matter what you name it.
5. Add that patch file name as another line in the source=() section. This tells the PKGBUILD to include the patch as a source file for the build.
6. Add an extra 'SKIP' line as the last entry in both the `sha256

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Upgrading Raspberry Pi OS from Bullseye to Bookworm (11 to 12)

Debian version 12, called Bookworm, was recently released. After only a few months of waiting, a version optimized for the Raspberry Pi was released, so it was time to upgrade. If I already did it for me, I'll write a step by step guide :)

The full changelog is here:
https://wiki.debian.org/NewInBookworm

If you write or run shell scripts, please consider the following:

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Managing the gpg-agent

These are the standard commands:

gpgconf --list-dirs
gpgconf --kill gpg-agent
gpgconf --reload gpg-agent

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TP-Link Tapo C500 and Linux

Those are my notes about using the TP-Link Tapo C500 camera in my Linux environment.

More precisely, my Linux system are

• a Debian Testing desktop pc
• a few raspberry pi
• an Asustor NAS that is running a highly customized Linux

Tapo C500 technical summary

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Intel AX200 Bluetooth Issues on ASUS X570 Motherboards: Findings, Problems, and Solutions

Last Updated: February 27, 2025

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Overview

The Intel Wi-Fi 6 AX200 chipset, commonly integrated into motherboards like the ASUS ROG Strix X570-I Gaming or added as an M.2 module, promises robust Wi-Fi and Bluetooth 5.2 connectivity. However, a recurring issue across both Windows and Linux systems, including Arch Linux, is the Bluetooth controller failing to initialize or function after a system reboot. This document synthesizes findings from community forums, official documentation, and user experiences to detail the problem, its potential impacts, and actionable solutions.