TL-WR841ND + OpenWRT: Success!

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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: https://wiki.openwrt.org/toh/tp-link/tl-wr841nd. As far as I can tell its been a success! The router […]

Fixing Nvidia + Bumblebee + Dell L502X error in Ubuntu 16.04

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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

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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: libGL.so.1: cannot open shared object file: No such file or directory For a final solution, do: Edit the file /etc/ld.so.conf.d/i386-linux-gnu.conf, as root: $ sudo gedit /etc/ld.so.conf.d/i386-linux-gnu.conf 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] – http://askubuntu.com/questions/555902/problems-after-installing-skype-4-3

Treinamento PSCAD/EMTDC 2016 – Unicamp

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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

CAPES está de ‘brincanagem’

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Recebi o seguinte e-mail da UNICAMP: Informamos que, por determinacao da CAPES, a partir do dia 06/05/2016 as Universidades Estaduais Paulistas passarao a ter acesso centralizado ao conteudo do Portal de Periodicos Capes somente pelo endereco: www.periodicos.capes.gov.br . Com isso, a unica forma de acesso sera pelo Portal de Periodicos. Outros buscadores (Google, Bing, sites das editoras, etc), nao mais funcionarao. As opcoes de busca disponiveis no portal do SBU, nas abas todos, bases de dados, e-periodicos e e-books, que congregam os conteudos assinados tanto pela Unicamp quanto pela CAPES, estao sendo corrigidos e em breve estarao em pleno funcionamento. […]

Thoughts after a whole day using Leap 42.1

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This a copy of the message that I tried to share with openSUSE user mail list (opensuse@opensuse.org) but I’ve got blocked :/ I’m writing this e-mail to share my experiences after a whole day using openSUSE Leap 42.1. The installation was pretty easy and worked ok. IMHO, the boot screen is awful. But it’s a taste thing, so nevermind. Everything started to go down the hill after logging into KDE. Unfortunately, Plasma 5 is really broken, the desktop environment is so unstable that I’ve missed the panel, the krunner and/or, kwin multiple times. Working with two displays (multihead) was kind […]