Archive | Hardware

How to install yubikey-manager on Debian

yubikey-manager is a Python application requiring some dependencies for it to be installed from the Python repositories, because it is not yet in the official Debian package repository. Here is how:

Here is the main commandline utility:

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Boot your Raspberry Pi from nothing but an Ethernet cable

Zero Client: Boot kernel and root filesystem from network with a Raspberry Pi2 or Pi3

A Zero Client is a computer that has nothing on its permanent storage but a bootloader. Rather, it loads everything from the network. With the method presented in this article, you will be able to boot a Raspberry Pi into a full Debian OS with nothing more on the SD card other than the Raspberry firmware […]

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Turning a Raspberry Pi into a Gateway to mobile internet (Image license CC BY-SA 3.0)

How to turn the Raspberry Pi into a Gateway to mobile phone internet

Your DSL internet connection is too slow? Want to set up an improvised office? You do not want to pay for a DSL internet plan when you already have a fast 4G mobile plan? If yes to one of the above, it is quite easy to configure a Raspberry Pi to share one mobile internet connection to an […]

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Reading Raspberry Pi chip temperature with mainline Linux kernel

This tutorial is based on a previous article where we installed pure Debian 9 with a recent mainline/vanilla Linux kernel on a Raspberry Pi, and so differs from what would be done on a Raspbian Distribution with a Raspbian kernel. In this article, we will read the Raspberry Pi chip temperature. Here is my previous article: Raspberry […]

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Setting I2C bus speed on a Raspberry Pi via Device Tree

This tutorial is based on my previous article where we installed pure Debian 9 with a recent mainline/vanilla Linux kernel, and so differs from what would be done on a Raspbian Distribution with a Raspbian kernel. In this article, we will set the I2C bus speed on a Raspberry Pi. Here is my previous article: Raspberry Pi […]

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Gnome on Wayland on Raspberry Pi 2

Raspberry Pi2 and Pi3 running pure Debian 9 (“Stretch”) and the Linux Mainline/Vanilla Kernel

Update 2017 Feb 25: I have updated the step-by-step instructions based on the suggested fixes and improvements contained in the reader comments. I also have copied the step-by-step instructions from this blog post to the README.md file hosted on https://github.com/michaelfranzl/rpi23-gen-image. From now on I will update the instructions only on github, so expect that the instructions in this […]

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Crash

Adventures with various Segfaults due to defective RAM

If you get various segfaults on your Linux server, like these:

or:

or

or

etc. etc., then, no, your system is not suddenly crazy. Nor are you. It is highly likely that you RAM is defective. You should reboot your server and run the  RAM test from your boot manager (Grub […]

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