Marcin Juszkiewicz - presentations

Why my device is not supported by distributions

2016-03-14T19:54:00+01:00

During weekend I was in Puck, Poland at small conference called “Zimowisko linuksowe” (Linux winter camp) where I had a talk called “Dlaczego moje urządzenie nie jest obsługiwane przez dystrybucje” (Why my device is not supported by distributions).

In talk I presented how distributions (Debian, Fedora) handle ARM devices (one kernel for all, one image for all) and why it does not fit Raspberry/Pi or Chromebook. Also mentioned Roseapple/Pi as an example of how not to make support for device.

There were questions about suggested boards (most of people knew Raspberry/Pi and one or two other by name) and ARM powered laptops other than Chromebooks.

And then we went to celebrate birthdays of few friends who had them on same day.

You can download presentation in Polish or English (translation was requested by few folks from IRC after I annouced that there will be such talk).

ELC-E 2009

2009-10-27T14:47:00+01:00

Some time passed since ELC-E took place. I did not wrote about it before because I was busy with other things and wanted to wait for presentations to be available.

The whole event took place in Grenoble, France on 15-16 October. I was there as a guest of ST-Ericsson company and had one talk there.

There were just 3 tracks so it was much easier to choose which talks to attend. I was on:

Jon Masters “Porting Linux” — interesting and it was nice to see the person which do LKML summary podcast
Grégory Clement “How We Got a 3D Application Booting in 5 Seconds Under Linux” — author told about few tricks they tried in a bit boring way
Sascha Hauer, Marc Kleine-Budde “U-Boot-v2” — project looks nice and I hope that my devices will migrate to this one day
Cedric Hombourger “Why OpenEmbedded Proved a Good Foundation for MontaVista” — lot of people attended, interesting talk it was. Nice part was when Cedric told that they checked all of currently available free build systems and chosen our one.
Samuel Ortiz “Linux Wifi Solutions for Mobile Platforms” — lot of technical informations but now I know more about Linux WLAN stack that I did
Matt Porter “Mythbusters: Android” — nice talk about this system and which parts of it needs lot of work to be usable on other devices then just phones. I was also interested in it as I had Android on Nokia N810 during ELC-E but finally decided to go back to Maemo.
Alessandro Rubini “Use of the Fast IRQ (FIQ) in ARM-Linux” — again lot of technical informations but I really like how Alessandro do his talks.
Alex de Vries “Technical Features and Components of Open Source Build Systems” — nice summary of what open embedded distributions lacks and what needs to be done. Was fun to listen how Alex tries to not say “open embedded distributions” too often ;)
Pierre Pronchery “Hackable Devices: The New Possibilities of Open Hardware”
Michael Opdenacker “Small Business” — most of small companies which attended have OpenEmbedded services in a list of what they do

I planned to attend few more but decided that Friday will be a good time to see Grenoble in other places then just hotel and conference centre.

What was a nice surprise for me was the amount of people familiar with OpenEmbedded. Most of people which I spoke with used it for misc projects. I had a talk with one guy about “stable” branches and how our view differ. For me “stable/2009” branch is what has to be buildable all the time but can take some updates, he prefers project branches with halted development and just very important fixes related with project.

My “Hacking with OpenEmbedded” talk got some interesting questions. Mostly about Maemo5 support but I do not know too much about it’s status.

Was it worth going? Definitely yes. Met friends, got new contacts, discussed about different projects. Was good to be there. I just hope that next time it will be in a place easier to get to — I had to fly thought Amsterdam so whole trip took me about 12 hours (each way). But on return trip I had interesting talk with Ruud Derwig during flight :D

Will something from ELC-E lands in OpenEmbedded area? Few things:

I had a talk with Atmel guys about their work on updating linux4sam website and their OpenEmbedded support. AT91 devices will get 2.6.30 kernel in OE and it will land also in “stable/2009” branch on which they plan to base their repository (instead of old stable branch).
my work on ST-Ericsson NHK-15 board starts to appear in official metadata. I still need to test it on board but base is added.
one company plans to release OMAP3 based developer board soon and this will be their first use of OpenEmbedded

ST-Ericsson Community Workshop 2009

2009-10-19T12:57:00+02:00

During Wednesday I was attending ST-Ericsson Community Workshop 2009 in Grenoble, France.

At that event ST-Ericsson presented their NHK-15 developer board and their work on getting U-Boot and Linux kernel support merged into mainline.

The interesting thing was that boards were given for each registered attender. What was inside you can read in one of my previous posts. But there was one more thing — 3Mpix camera daughter board. It is not visible on my pictures as decision about giving them to people was taken one day before event. It works as V4L device but I did not yet tried how good it is.

What was during event? Keynote was given by Harald Welte and it was really interesting talk. Next were:

NHK-15 presentation
U-Boot
Linux Kernel
Poky Linux & OpenEmbedded based environment

Last talk was mine - I said what Poky is, what it gives to the user and then same stuff about OpenEmbedded. Was it good talk or not is to be decided by others.

presentation to download

ELC Europe 2009

2009-08-06T14:53:00+02:00

In October there will be Embedded Linux Conference Europe in Grenoble, France. And this year I will talk there.

It will be “Hacking with OpenEmbedded” presentation in which I plan to cover some non-standard uses of OpenEmbedded build system. Also I was invited to take part of ST-Ericsson workshop where I will present Poky Linux and Ångström on ST Nomadik based NHK15 developer board.

If you want to meet me there I will arrive at Thursday evening and leave on Saturday’s morning. Traveling Szczecin -> Berlin -> Amsterdam -> Lyon -> Grenoble (same way back) will take most of those days…

Maemo in QEMU N8x0 emulation presentation

2008-09-20T16:44:00+02:00

Today is second day of Maemo Summit 2008. I had the presentation about running Maemo in QEMU’s N8x0 emulation.

From what people told me after it was made fine. I think that this is good as this was my first presentation in English :)

All materials are of course available to download: