Powertop 2.0 is out (Release Announcement, The H Open article).

So how do I use it ? Well, I found the html report to be the most useful as it gives you the exact commands (Tunables) you need to run to adjust power settings:

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sudo powertop --html

You will then find those commands in the Tunables tab in the powertop-*.html generated file. You should try carefully each one of them one by one as they can have some nasty effect (disabling USB mouse, increasing power consumption…).

If you’re using systemd like I do, and want to use the classic /etc/rc.local file to set those settings at boot time, you should use the initscripts-systemd package and make sure it is enabled with :

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sudo systemctl enable rc-local.service

I recently had to setup cgit with nginx on Arch Linux for http://git.siosm.fr and it took me quite some time as I was not familiar with cgi, fcgi, fcgiwrap, spawn-fcgi and had no idea how they worked together.

Here is a list of all the thing you should read while installing Arch Linux if you ran into troubles.

If you’ve got an ARM device, check the Arch Linux ARM project.

This post will be updated as often as possible. If you find something inaccurate, feel free to contact me!

I just received my Nokia N9 and I’m starting to learn Qt Quick/QML to design some applications for it. You can find some useful applications on websites such as N9 Apps and Apps for MeeGo but there’s still a lot of features missing. Update expected soon as I’ll share my findings on how to build apps, witch SDK to use and stuff like that.

To build KDE on Arch Linux with the nice kdesrc-build script, you need the packages listed on this page: KDE TechBase plus this package: perl-libwww. I didn’t have to rebuild Qt as the version provided in Arch Linux repository seems to be OK.

I took part in the PHD CTF Quals on the 10-11th December 2011, with two friends (Alkino and PO). For more information, see fs.siosm.fr.

Update (March 2012): I switched to Octopress, which is extremely simple to use and secure by design (no databases, no scripting languages, pure static content). This doesn’t mean that Wt isn’t good in any way, but it’s just faster to use Octopress. Wt remains the must have for web applications and dynamic web pages in my opinion.