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Posts By: Otto Kekäläinen

Dual-booting Ubuntu 12.04 and Windows 8 with Restricted Boot

In parallel with the introduction of Windows 8, Microsoft also introduced new hardware requirements to all manufacturers who sell pre-installed Windows 8 computers. As Microsoft Windows still has a monopoly in the desktop and laptop computer market, lots of people who buy computers suffer from a new anti-feature Microsoft introduced: Secure Boot. All Windows 8 […]

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Tips to optimize images for faster loading websites

For a multitude of reasons ranging from user conversion rate to search engine ranking, it is important for web sites to load fast. The first rule of thumb to having fast loading pages is to keep the amount of data the users need to transfer small. The smaller the web page file and its dependencies […]

JavaScript, the winning style

Update July 15th 2013: Due to commenters demand, we have re-published this research as a Git repository anybody can contribute to: github.com/Seravo/js-winning-style. This article has become our most popular article with over 10 000 unique readers, so this issue is clearly something the JavaScript community should get done. Update August 16th 2013: A translation in […]

6 reasons to learn JavaScript

Presentation held at Happy Hacking Day 2013 at Haaga-Helia in Helsinki, Finland. In a nutshell, the six reasons to learn JavaScript are that it is: easy: JS is a high-level language where things like type setting and compiling is done automatically, so it suits even people with no previous programming experience. versatile: JS is multi-paradigm […]

Dell XPS 13 Ubuntu Edition – first impressions

Update October 2013: We bought a new Dell XPS 13 in October with Ubuntu pre-installed but unfortunately it seems to have problems with the wireless: wifi connections seem to disconnect at random and thus wifi is useless. We found out that the in the new laptop shipped to us this fall the Intel wifi card […]

Seven reasons why tablets are the future

1. Touch is intuitive It’s easy to learn to use a mouse. But touching you don’t need to learn at all. It is so intuitive that even an 1-year old child can interact with touch devices in meaningful ways. And if an 1-year old can use touch devices, so can you mother and grandmother too. […]

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Improve MySQL performance to speed up websites

In every business the rule is that if your service is slow, you’ll loose customers, and it certainly applies online too. If your website takes two seconds to load instead of a half second, you’ll loose visitors and business. Even if it is just about improving by a few seconds, on the web it does […]

Optimizing web server performance with Nginx and PHP

Who would not want to have a fast service? No matter how good your web service is, if it takes 5 seconds to load a page, people will dislike using it. Even search engines dislike slow servers and decrease their ranking. Faster is always better. In our article a few months ago we asked what […]

Free Your Android phone (and upgrade to the latest Android version)!

Most Android phone manufacturers provide operating system upgrades, so you can run the latest version of Android even with an older smart phone. With closed software phones like iPhone this is not possible, since Apple wants to force its customers into always buying a new phone. However not all Android phone manufacturers provide upgrades, or […]

Installing Android-x86 4.0 on the ExoPC (WeTab)

The official Android project only releases versions for the ARM platform, but there is an unofficial porting project for the Intel x86 platform called Android-x86. Using this version you can in theory install Android on any home computer lying around. In practice however you need to consider what kind of components your device has and […]

Git training with Devaamo

On November 28th Otto Kekäläinen of Seravo ran a Git training session on request by the Tampere-based developer community Devaamo ry. Git is great revision management system authored by Linus Torvalds, and in last two years its popularity has exploded because it is so great, but certainly not because it would be easy to use, so there […]

The WOW effect

The mobile devices scene is very interesting to follow at the moment. All competitors have a huge urge to overtake the market, since we know that in a few years billions of people on this planet will buy a mobile device, and whoever gets the biggest market share now, is likely to make huge profits […]

The fastest web server in the world?

Speed matters. Over and over research shows that when the speed of a website increases, the activity of users increase. Even if the changes are small, like a half second, and users are perhaps not conscious about it, users will view the overall experience as better. Besides website popularity, high-speed websites are also capable of handling more […]

Trying out Meego offspring Mer and Nemo on ExoPC (WeTab)

Even though Steven Elop, Intel and the Linux Foundation killed the Meego project, the code base is not dead. In October 2011 the Mer Project was forked out of Meego and quickly attracted the development community that had grown distrust in the original Meego project, for very obivious and good reasons, of course. In the […]

SUSE Roadshow 2012, November 1st at Tampere

The SUSE Roadshow will visit six locations in Finland. Seravo Oy will be co-hosting the event at Tampere, where it will be held at Bravo Plaza, which is located just next to our office at the Finlayson area. Lately SUSE has released several new products (all of course based on open source software) and there will […]

Maintenance relation in Finland – an open data visualization

To honor the OKFestival currently held in Helsinki, Finland, we’ll publish this week a few articles on open data work we’ve done. You might also bump into some of us at the festival! During the fifth HS Open event Seravo participated in creating an open data visualization (in Finnish) on the maintenance relation in Finland, meaning […]

The populist party – an open data visualization

To honor the OKFestival currently held in Helsinki, Finland, we’ll publish this week a few articles on open data work we’ve done. You might also bump into some of us at the festival! By using selection path analysis, we demonstrate that it is possible to create a political campaign with maximum voter popularity. Media corporations […]

Avoid failure of e-service development by using open source

In May 2012 I (Otto Kekäläinen) attended an internal event by the Ministry of Employment and Economy that was intended for officials working within the branch. There where two outsider speakers, and the second was Pasi Mäkinen of Microsoft Finland. Avoimen lähdekoodin ratkaisut palvelujen kehittämisessä (2012-05-29) from Otto Kekäläinen In my presentation (in Finnish, available […]

Cross-distribution packaging with the Open Build Service

The Open Build Service is a great innovation that significantly lowers the barrier to package software for multiple Linux distributions. It enables building packages for many different Linux distributions at one go, both RPM and Deb based. For example the Seravo Remote support program is built via OBS for 15 different Linux distribution versions. Actually the […]

Make your Android phone last a week without recharging

Modern touch screen smart phones are great and enables you to do almost anything, but there is one feature that older mobile phones are still better at: battery life. I imagine most smart phone users recharge their devices every other day or so, which is fine as long you have easy access to electricity. However, […]

Google Navi for Android in Finland

For some reason, which we where unable to find information on, Google hasn’t published their navigation app for Android in Finland. However it does exist, and it works wonderfully. To install the Google Navi app, you must first uninstall your current Maps app, and then install the modified Maps app with Navi enabled, which can […]

The making of VALO-CD

The VALO-CD project was started in 2008 as a marketing campaign for open source software (also known as Free Software). The highest priority was to make everything as easy as possible. All the user needs to do, is to pop the CD in their computer, and a program will start automatically, where the user can […]

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Migrating from VirtualBox to Virt-Manager

The Linux virtualization module KVM is gaining a lot of popularity and system administrators everywhere are interested to learn about it. As many Linux users run VirtualBox to host other OS’s under their primary OS, the easiest way to get experience about KVM is to replace VirtualBox with it and thus getting used to KVM. […]

The HTML5 Manifest

We want HTML5 and other open standards by the WWW Consortium to become the universal computer interface platform on any decive, anywhere and for anyone. HTML5 has clear advantages that beats any other options in so many ways: Free and open based on standards anybody can read and use without restrictions standards are drafted in […]

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A Mission for Finland

Alexander Stubb, the Minister for Foreign Affairs, appointed a delegation to develop Finland’s country brand in September 2008, and Jorma Ollila, Chairman of the Board of Directors of Nokia and Shell, was invited to be its Chairman. The work culminated in a country brand report published at the end of 2010 called ”Mission for Finland – How Finland […]