TL-WR841ND + OpenWRT: Success!

My fiancée’s TP-Link TL-WR841ND (v9) router was systematically crashing when under heavy load, especially with Torrent. It was only possible to return the router to operation by power cycling it. I had tried to update its firmware with the newest version avalaible from TP-Link’s website. Nonetheless, it was not enough to solve the presented issue. In order to avoid launching this router through the 4th floor window, as last resort I tried to reflash it with OpenWRT. Here is the wiki page dedicated to this cheap router: As far as I can tell its been a success! The router […]

Fixing Nvidia + Bumblebee + Dell L502X error in Ubuntu 16.04

For some weird reason the Ubuntu 16.04 Bumblebee’s default version was not being able to switch on/off my discrete video card NVIDIA Corporation GF108M [GeForce GT 540M]. I was getting the following error: $ optirun glxgears [ 7224.163607] [ERROR]Cannot access secondary GPU – error: [XORG] (EE) [ 7224.163722] [ERROR]Aborting because fallback start is disabled. I was able to solve the aforementioned issue in this way: 1) Adding the repository with fresh bumbleblee packages: $ sudo add-apt-repository ppa:bumblebee/testing 2) Updating the repositories and upgrade bumblebee: $ sudo apt-get update; sudo apt-get upgrade 3) Adjusting /etc/bumblebee/bumblebee.conf file: 4) Adjusting the /etc/bumblebee/xorg.conf-nvidia , […]

Fixing skype on Ubuntu 16.04

For some weird reason my skype doesn’t open normally within Ubuntu 16.04 since it miss a required library, throwing on my face the error below: $ skype skype: error while loading shared libraries: cannot open shared object file: No such file or directory For a final solution, do: Edit the file /etc/, as root: $ sudo gedit /etc/ Add the following line to this file, save and close it: /usr/lib/i386-linux-gnu/mesa/ Then, to finish it, update your systems libraries, as root: $ sudo ldconfig And that’s it, your skype should open without hassle now. References [1] –

Treinamento PSCAD/EMTDC 2016 – Unicamp

Este curso irá abranger de forma prática os recursos básicos do programa de simulação de transitórios eletromagnéticos PSCAD/EMTDC. O programa do curso cobre desde os conceitos básicos para o entendimento do programa, passando pela modelagem e simulação de sistemas elétricos até o uso de ferramentas para visualização de resultados. O treinamento tem um viés dinâmico alcançado através do uso da ferramenta de simulação. Haverá duas turmas neste ano de 2016: 3-5/outubro e 28-30/novembro. Maiores informações: Programa de Treinamento PSCAD/EMTDC 2016