Gajim and GPG Agent

2015-05-05

Since I’ve started using Gajim I’ve been trying to get it working using the GPG Agent rather than the built-in GPG option. The practical benefit is that I’m no longer required to insert my passphrase each time I open up my laptop, as the passphrase is part of my keychain, just like I have enabled form my Evolution email client. It took me quite a while to get it working, and looking by the number of reported tickets others had difficulties as well. I finally got it working by ultimately trusting the receivers key. In order to keep others from having similar issues, I’ve filed a ticket on the trust level and a ticket on the error.


My C720P upgrade to freedom

A couple of years ago I started using my own laptop at work under the policy of bring your own device although to me it wasn’t about the device, it was about bringing a free computing platform I can trust, a GNU/Linux distribution, and many free and powerful applications, all to improve my short-term and long-term effectivenes as an engineer. This however changed my needs regarding battery life, screen brightness and form-factor. And with the recent dying of my Lenovo Thinkpad T60p, I desired an upgrade, to be able to destine my current Lenovo Thinkpad T61 to become my backup.

Currently there are plenty of interesting developments regarding more free laptop projects, which are even destined to pass the FSF Respects Your Freedom certification. Specifically the Novena laptop, the Libreboot X200, other corebooted Thinkpads, the Librem laptop, and the EOMA68 15 inch laptop. Of this set only the Libreboot X200 and the Librem seem to provide the desired technical upgrade relative to my T61. The Librem seems more ideal, but import taxes would drastically increase the already hefty price. Eventually the Libreboot X200 seemed to be the best deal around, and that’s probably why it is used by many FSFE contributors.

However eventually I decided to go another route, in retrospect mainly driven by technical aspects of an even longer battery-life, an even brighter screen, and an even smaller form-factor. I decided to use a converted Acer C720 Chromebook, more specifically the C720P model bringing more RAM, a larger SSD, a touchscreen and a white housing. Also there are quite a number of copies available second-hand, reducing the cost. Having an X86-architecture supported by SeaBIOS, the level of freedom on the C720P can be increased rather easily. Removing an internal screw allows the BIOS to be reflashed, and thanks to John Lewis amongst others a free SeaBIOS payload is available to flash the laptop using coreboot. I must admit this laptop wouldn’t pass the FSF’s Respects Your Freedom certification, due to the Intel Management Engine and VGA BIOS, which are on the coreboot tasklist.

Photo showing the Acer C720P in the process of being buffed.

C270P buffed by Kevin

Photo showing an opened C720 where the BIOS reflash is being enabled.

C720 BIOS reflash being enabled.

Although I’m somewhat of a tinkerer, I left the freedomification to my Dutch FSFE Fellow Kevin Keijzer. He has flashed his own Acer C720 with coreboot, having used it since early 2014. We agreed on a fair price, as free software isn’t about free as in gratis, it’s about free as in freedom. I must admit I was pleasantly surprised by the level of service I was given. The laptop was buffed to remove scratches, reflashed, pre-installed with Ubuntu GNOME according to my specifications, configured with all the right shortcuts and device-specific configurations, and subjected to a test run to make sure everything was working correctly. As a finishing touch, to remind me about practices by other vendors preloading unwanted media, I was given my best preloaded media yet. I donated my defect T60p to Kevin’s effort on creating freedom respecting laptops from discarded Thinkpads.

Photo showing Ubuntu GNOME running on the Acer C720P.

Ubuntu GNOME on Acer C720P

Photo showing a personal laptop sticker on the back of the Acer C720P.

Personal laptop sticker on Acer C720P

I strongly encourage anyone to contact Kevin for his Quiet Life Linux Services to experience his level of expertise and great level of service.

Photo showing freedom respecting Thinkpad T60.

Freedom respecting Thinkpad T60.

Now having two operational laptops with two slightly different use-cases, I’m even more encouraged to finish my syncing setup. So far my synchronization is done using Syncthing, Mozilla Sync, my own Freenas build, and a remote OwnCloud server, but more on that later.


Fairphone back to the drawing board

2015-03-23

Previously I’ve shared my thoughts and concerns on freedom in mobile operating systems. The Fairphone project unfortunately has a bad reputation in this area. Not because they don’t care, but because they failed to deliver on this promise in their first version. Other people involved in open hardware design for mobile devices saw it coming as they’ve been struggling with exactly the same issue for many years already. Especially for them it shouldn’t have been a surprise that a perfectly fine hardware platform would be kept from future firmware updates.

But as in any process of innovation, a new version allows for improvements. And so will a new upcoming version of the Fairphone. For months the Fairphone has featured several lengthy threads discussing alternative, generally more free operating systems. As I tried to state with a lengthy forum post there are multiple interest in strong conflict with each other. So even whether there will be multiple OS flavours or one for all customers is not yet decided. The great news however is that the Fairphone team have taken on this challenge, big time! I’ve had some email conversations with Kees Jongenburger and Joe Mier regarding further plans and options. But more importantly, they went looking for alternatives at the Mobile World Congress. Over the course of the next months the plans will be finalized, so I’d like to encourage anybody with relevant information to contribute to the discussions. Let’s make the next Fairphone far more fair.


Dia, I love you

2015-02-14

Roses are red. Handles are green.
You’re the finest diagramming software I have ever seen.
Always there to help me out.
And you ask nothing in return.
Creating things together is all I really yearn.

Dia I know we will be a great team.
We can work together even upstream.
So let this be my tag line:
Would you be my Valentine?

'I Love Dia' drawn in Dia.


Ubuntu calling for freedom

So far the flash sales of the first Ubuntu phone by Bq has been sold out, and certainly not without a reason: the Ubuntu phone holds great promises for both the users and the development community. On the FSFE Discussion mailinglist I already gave a quick and general overview mostly based on a recent Linux Unplugged podcast, and so in this post I’d like to revisit my comments with a focus on freedom, as this is lacking in other articles. One word of caution though, I haven’t yet read formal documents or code, so all listed info is second-hand.

First off, embedded devices are difficult, and phones in particular are hard, like Fairphone for instance has come to find. The problem with phone-hardware in general, is the fact that a build is needed for a specific phone since auto-discovery of peripherals like on a regular computer is missing. Add to that the fact that electronics are developed more rapidly than free drivers an be developed, as was the case for the Vivaldi tablet. So unless you have a say in the electronics, and allow a non-signed bootloader, it is very hard and especially time-consuming to develop this lowest layer as free software. and that is also why project like Neo900 and GTA04 exist. One of the added benefits the GTA04 offers, is that the modem is physically separated from other processors, as the modem implementation is locked-down by law. This is about as free software supporting as free hardware designs can get, but this freedom comes at a cost in performance and money, thus requiring plenty of commitment to become a reality.

So in order to actually ship a product, using non-free designs and chips will be the default option, like Ubuntu did in this instance. In order to get a kernel running the device-specific board support package offers the prerequisites needed to boot the Linux kernel. But rather than modifying the Linux kernel and building a tightly integrated software stack for a particular device, as is the case for Android, Ubuntu Phone separates the software stack in two separate layers: a device-specific part and a Ubuntu-part. This separation is ingenious and brings great benefits.

By having a separate Ubuntu-part, this can be updated in the future, without having to do revisions on the device-specific part, thus allowing all models to stay up to date with the newest Ubuntu, and thus avoiding both the platform segregation of Android and the limited number of firmware updates like on iOS. Users can thus still get security fixes and the features newer applications might rely on. Also regarding this part, it would be possible to run a different top layer for a specific mobile operator, or run a different interface on top of this Ubuntu separation layer. I haven’t looked into this layer, but ideally it should be a clean and stable in order to allow others to adopt it.

Likewise the bottom part can be swapped. For instance an Ubuntu Phone port was made to the Nexus 5, which was done by building the necessary but limited hardware support and offering the separation layer. Due to the additional separation, this port will be able to keep up with firmware updates, and so all additional development efforts can go towards improving the device-specific part rather than keeping up with firmware versions. Depending on the required complexity of this device-specific layer, porting additional devices is relatively easy and particularly fruitful as it can remain nearly a one-time effort.

I’m not aware how free the Ubuntu-part is, although I assume this would be in line with other Ubuntu distributions where it mostly adheres to your needs for freedom. The interface is based on Qt5 and is very supportive of HTML5 applications. In this way mobile applications would be able to run on the Ubuntu desktop in the same matter, offering a great convergence solution. Also it is supportive of efforts being made to put forward HTML5 applications for a run-everywhere solution. There is no policy which requires applications to be free, so you can install all kinds of applications, of which a long list is already available. Users are able to sideload applications, avoiding the dependence on an appstore, which is probably the reason why no appstore was launched by Ubuntu just yet. Of no less importance, it seems to be well designed and offer great usability.

One somewhat overlooked part, is the availability of scopes. They aren’t as much overlooked in functionality, but rather in philosophy. Android and iOS have recently realized that apps can be complementary and it is up to the firmware to provide the integration. This can be news and weather, but more recently health and home automation seem relevant as well. The fact that scopes can either work with local data or on the internet but not both, respects the capabilities of the device and prevents unwanted data transmission. More importantly by offering aggregated scopes, you can create a locally generated view. This adheres to the vision of a web which is decentralized rather than centralized and in which each computer has many outgoing connections.

Of course the big elephant in the room is that the phone ties into the Ubuntu ecosystem and so convergence would be best between the Ubuntu phone and the Ubuntu desktop, and likewise it would bring a boost to the Ubuntu store, Ubuntu Snappy Core and presumably to cloud services. So what if Ubuntu would be the next big platform? Well, it would bring a very free firmware which is very friendly to porting devices, it would encourage development in HTML5 and Qt, it would encourage more decentralized applications, it would enable development of the Ubunthu phone itself, and it would put a great alternative next to the Google-ized Android and other systems.

Either way, I nearly bought one but I just missed out by the flash-sale. I’d strongly consider ordering one, because I believe this stack is much more freedom-respecting than Android. More frustrating my perfectly fine phone is still on Android 2.2 with a lack of application support and a whole load of known bugs. I haven’t looked deep enough into Jolla or Tizen to judge them. There are many known improvements available to be adopted, both in hardware, firmware and the available applications. Currently however this seems to be a great phone, with a great software platform, which is another stepping stone in the right direction.


Why engineering students need to be taught free software

2015-01-15

At a power systems symposium today I met some of my previous classmates of the technical university, now in the starting phase of their engineering career. My viewpoint on the need for free software in education was once again confirmed. Whilst at the university many advanced software packages are provided to students at negligible cost, at work these same tools are hard to obtain. In practice these software packages are too expensive to be used on just a couple of cases, let alone ‘try out’ to find a use case. This basically leave the choice between misusing unsuitable packages or not taking on the task in the first place, both of which are generally undesirable.

As I have learned, and my classmates are learning as well, as an engineering professional you are in need for software with no strings attached: free software. Engineers are taught to overcome many hurdles by grasping the problem and coming up with a right approach for solving the problem at hand. Restricting the set of these possible approaches by restricting the software selection ultimately leaves unmet engineering potential, making this practice hurtful to the end-result.

As each individual use case will require the software for a different use case, software packages in general cover a larger set of features in order to target a larger market of multiple use cases, resulting in relatively overpriced software. Apart from the cost of the software package, there are the costs of maintaining yet another software install and having to deal with recurring costs like license fees per year or version. A way to diminish this barrier is by offering subscriptions to hosted solutions, as many software vendors have started doing. Whilst this reduces the upfront cost, there is more to free software than cost alone.

The freedom to modify the code enables integrating the software package in a solution like an automated tool chain. Better still by modifying the underlying code or even working with upstream development engineers can customize and improve each tool of your tool set. Since it is free software no party will be able to take it from you, and you are able to fork the software if you disagree with the direction development is heading in. In this way an engineer is able to achieve far greater independence.

Whilst it seems to be a good idea to teach students to use professional software pckages used in the workplace, this approach presumes that those software packages will be available for students at the job after graduation. If this isn’t the case, these engineers experience unmet potential. By teaching free software, all students are able to exercise their potential, although some students will experience a non-free software package on the job. If the latter is the case, this presumably is because of specific features, which wouldn’t have been taught at university in the first place.

Furthermore students need to be taught to evaluate software offerings in order to select a package based on the task at hand, rather than to have a package selected for them which is often misused or underused. And free software should be taught just like academics are taught, since both value sharing information and checking the work of others.


IEEE Open Source Software Task Force

2014-12-24

Sometimes an open initiative just ‘clicks’, because it fills a growing need and does so in the right way. Great non-software examples I have come across in recent history are Wikipedia OpenStreetMap RepRap DIY Book Scanner WikiHouse OpenDesk and EOMA68. Just yesterday I experienced another such a ‘click’ initiative: the IEEE Task Force on Open Source Software for Power Systems. This initiative has a clear mission in encouraging free software adoption in this rather conservative field:

This Task Force explores the potential for open source software (OSS) in the Power Engineering Society (PES). The mission of the Task Force is twofold:

  1. diffuse the philosophy of OSS in the power systems community
  2. promote OSS for the benefit of the PES ranging all the way from simple pedagogical OSS to commercial-grade OSS.

Having a power system background, ever since I’ve become aware of free software¬†I’ve wondered about why so little free software is being developed and used in the field of power systems. This concerns both software for calculations and simulations, but also operational systems like SCADA which could certainly benefit from having more eyes on the code. Also the calculation and simulation software is entering the operation domain now that the increased number of measurements and the available computation power allow for real-time grid analysis.

In any case power system software is becoming an ever more important part of the core business of power system development and management. Some vendor-independence and collaboration in development therefore seems to be important and sensible. Current practice however seems to indicate a low level of adoption by the industry, probably because free software has only recently come to the attention of the industry, and because of the lack of companies offering support. The latter has proven to work for the software industry, with Red Hat as a great example.

Two listed presentations at the panel sessions of 2009 because it shows the task force cares about software integration. An interchangeable data format was discussed which expands upon existing standards to better allow software programs to tie in with each other. Likewise GIS integration has been discussed, which is an important development in bridging the gap between the real-world and the simulation model, since the scope of a power system is greater than its individual components.

The software list published by the task force certainly lists some projects I’ll look further into. I certainly hope the efforts of this task force and the listed projects will contribute to a bright power system future.


The fun of free software

2014-11-21

Despite running Linux for over 6 years now, I just recently converted my machine to Debian Testing. My initial reason for running Testing was to obtain newer versions of packages I value, like the GNOME desktop environment, the LaTeXila editor, and the Scilab simulation software. Therefore right out of the box it was very satisfying getting to experience the progress that had been made since the last Debian Stable release. However in Scilab I experienced the problem of graphs not displaying as they should. Of course I filed a bug report and by creating a workaround (writing svg images) I was able to continue business as usual. Now what I wasn’t expecting, is the level of excitement I got from having a bug that was bothering you finally solved. When I upgraded my packages today I found out that this specific bug has been fixed and even though it was a minor issue, it is amazing that all the people in patching the software and releasing it cared about my issues, and that so many other users will benefit from this patch as well. Not just seeing the larger updates but especially seeing the smaller improvements does shed a different light on software development in the free software community and I’d like to think it is very addictive, especially for the more technical users, to continually be supplied with small improvements.


Why EOMA68 will advance both free software and free hardware

2014-11-07

If you’re not familiar with EOMA68, it’s an open electronic interface standard specifically designed to support the development of small computing devices built-up of free hardware and free software. It is mostly known for it’s involvement in the third attempt for creating the KDE-tablet, known as the Spark tablet and the Vivaldi tablet. In this project it was found that it is impossible to rely on the continuity of hardware specifications by Asian electronic vendors. If your goal is to develop a software stack, targeting changing hardware will consume most of the development resources, rendering the project useless. So it became clear that control of the hardware is very important in the fast-paced world of embedded and mobile computing. The EOMA68 standard is an important stepping stone in this regard, because it defines a strict interface between the processing board which includes the main component drivers and the board it is inserted into to provide all the necessary interfaces for the final use-case. This means that the processing boards can be produced at sufficient volumes to enable the desired control over the internal components and thus the free software support. The devices interfacing with the processing boards might be subject to electronic changes, but due to the EOMA68 abstraction, the impact on the software stack will at the very least exclude the basic working of the operating system.

So in this way EOMA68 enables the development of free software for this kind of hardware, but it also increases the ability to design free hardware. If a more free option for chips becomes available, the only step involved for freeing the end-user devices is to develop and build new processing boards. This is far easier of a task than incorporating all the interfaces (like screen drivers) and also the production count can be higher since it is more widely applicable. Also in the process of development the new processing board, it could be tested on the existing EOMA68 platforms without having to develop specific setups. For instance new processing boards can be beta-tested by swapping new cards around between people having EOMA68 compatible devices. Likewise new EOMA68 platforms can be developed and tested by comparing the performance between different processing platforms. So say a driver is functional on a general 64-bit architecture, the driver on the other architecture can be tested to produce the same results, all without creating specific setups for each hardware component.

Then in addition the standard brings the advantage of upgradeable hardware and even shared hardware to the table. The PCMCIA-based boards can be handled by consumers without risking ESD-issues and the interface allows repeated plugging and unplugging without deprecating the contacts. So if your laptop gets slower you just buy a new board for it. And by switching your boards around like a domino-game you can consequently upgrade your netbook, tablet, router or even your smartphone as well. You can leave the now spare processing board on the shelf as a back-up or buy an additional platform to fill another need. This type of upgrading reduces cost and e-waste. Another option would be to have true continuity by carrying a processing board and changing its interfaces depending on the need. You could even change to device with another screen type if you would like to work out in the sun or you could use the built-in connectors of the processing board to watch your holiday pictures at a friend’s place.

So how can you get on board with this? Well, there is a crowdfunding campaign about to launch in order to bootstrap this new paradigm. And just as this system enables, a new and more free processing board is already in development.


Circumventing Google on mobile

2014-11-03

Nowadays there are many ways to circumvent Google’s services for mobile, which is especially important to Android users who would like to take the next step in freeing their Android. There are other email providers, other PIM syncing services and other application distributors. However I would assume that sometimes a couple of non-free applications might be holding users back from freeing their Android, for instance because no free alternative is available or because their friends are tied in a non-free environment. Luckily the Linux Action Show made me aware of GooglePlayDownloader a project which enables the user to download .apk files from the Google Play Store whilst circumventing the logging and syncing required by Google. This is of course a cat and mouse game, with the associated projects reverse-engineering the API’s and store navigation to keep track of this moving target. With most software creators targeting just the Google Play Store for Android applications, this is a valuable addition to the set of tools that aid in freeing mobile users.