Thoughts dereferenced from the scratchpad noise.

Published at October 10, 2018 · Maciej Pijanowski · 8 min read

Intro In my previous posts I have shared my first experience with debos and how to run debos in a container. In today’s post, I’d like to present how can we use all of that to generate base Debian image for an ARM board. My board of choice for this particular example will be the HummingBoard Edge. The post is inspired by the feedback from the new users (such as this one) that there are no end-to-end examples how to quickly start using this tool....

Categories: os-dev

debos in docker - the second attempt

Published at August 23, 2018 · Maciej Pijanowski · 5 min read

Intro In the previous post, I have shared my first experience with the Debian images builder - debos. I have posted my current results on the issue but since there was no response, I’ve decided to try to move forward by myself. Just to remind - I was stuck at the following error (when building for arm64): 1 2 3 4 5 6 7 8 9 10 11 12 2018/07/26 18:36:39 Debootstrap (stage 2) | chroot: failed to run command '/debootstrap/debootstrap': Exec format error 2018/07/26 18:36:39 debootstrap....

Categories: os-dev

Our first look at debos - new Debian images generator

Published at July 27, 2018 · Maciej Pijanowski · 8 min read

What is debos debos is quite a new tool allowing easier Debian images generation. It seems to be following current trends - it is written in Go, using YAML as an input format. The idea of taking away debootstrap shell scripts and replacing it with a single, simple YAML file looks tempting enough to give it a try. Full feature description can be found in this introductory post on Collabora’s blog....

Categories: os-dev

PC Engines APU2 netboot Debian installation

Published at March 26, 2016 · Piotr Król · 3 min read

In previous post I described how to setup PXE server and boot Debian installer using it. I mentioned that provided setup is limited and some extensive configuration is needed to make it useful for real world example. Since that time I learned that there is chain command in iPXE, which give ability to use arbitrary TFTP server as boot file source. Using RPi PXE server For example by changing my test network topology from previous post to something like that:...

Categories: os-dev

virtualbox-dkms: fix alloc_netdev problems when compiling with 3.17.0-rcX headers

Published at September 20, 2014 · Piotr Król · 4 min read

Intro Because of my bug hunting approach of using latest kernel I experienced problem with compiling VirtualBox modules with 3.17.0-rc5 version on my Debian Jessie. Issue is well known and described for examples here. Problem manifest itself with: 1 2 3 4 5 6 7 8 9 10 11 12 ------------------------------ Deleting module version: 4.3.14 completely from the DKMS tree. ------------------------------ Done. Loading new virtualbox-4.3.14 DKMS files... Building only for 3....

Categories: app-dev

How to fix backlight issue on IdeaPad y510p

Published at August 23, 2014 · Piotr Król · 1 min read

Today I decide to switch to latest kernel (3.17-rc1) on my IdeaPad y510p. I hit only one annoying problem until now - after booting my main screen was dimmed. I tried all instructions from top google hits for all possible configurations of keywords linux, y510p, backlight issue, etc. Especially I tried all methods from Arch Wiki. Finally I found solution, by greping modinfo for my Intel graphics card: 1 2 3 4 5 [23:55:24] pietrushnic:~ $ sudo modinfo i915|grep backlight parm: invert_brightness:Invert backlight brightness (-1 force normal, \ 0 machine defaults, 1 force inversion), please report PCI device ID, subsystem \ vendor and subsystem device ID to dri-devel@lists....

Categories: os-dev

Linux (Debian Wheezy) on Lenovo y510p

Published at May 16, 2014 · Piotr Król · 4 min read

After long analysis I decide to buy new laptop. I had about $1000 (or 3000PLN) and most important things to me were: i7 CPU - because of performance (of course at least 4700 series) SSD - again performance 17.3” - working space no OS/FreeDos/Linux - I will not pay additional fee to M$ for system that I won’t use Full HD resolution at least 8GB RAM non-glare display First I realize that my budget is to small for such a hardware....

Categories: os-dev

Sqlite3 gem not supported on Heroku

Published at November 18, 2012 · Piotr Król · 1 min read

When I tried to deploy second part of RoR tutorial to Heroku I get this error: 1 2 3 4 5 6 7 8 9 10 11 12 An error occurred while installing sqlite3 (1.3.5), and Bundler cannot continue. Make sure that `gem install sqlite3 -v '1.3.5'` succeeds before bundling. ! ! Failed to install gems via Bundler. ! ! Detected sqlite3 gem which is not supported on Heroku. !...

Categories: app-dev

Prepare for Ruby on Rails on Debian wheezy

Published at November 18, 2012 · Piotr Król · 3 min read

I start to learn Ruby on Rails. As always when you learn new programming language toolchain is required. In this tutorial I will try to go through toolchain preparation for my Debian wheezy. Of course I based on Vim as my editor of choice. Second requirement will be using some parts of toolchain in latest greatest version. As a beginner point for learning Ruby on Rails I choose this tutorial. I will try to use their methods of setting environment adding my comments where it is needed....

Categories: app-dev

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