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May 14, 2018May 14, 2018 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

How to Run Chrome OS in Android Emulator

While it’s possible to run the open source Chromium OS in your computer or a virtual machine, AFAIK there was only was way to test Chrome OS: purchasing an actual Chromebook, or other device running the operating system. But this week-end, I read the news that Chrome OS was now available in Android Studio, and you can run in Android Emulator while emulating a Pixelbook, so I gave it a try by following the instructions on Android Developer website. If you haven’t done so already, we first need to install Android Studio. I’m running Ubuntu 16.04 in my computer, but this will also work in Windows and Mac OS X. After download the IDE zip file, we can extract it… and then open a console, go into “{installation home}/bin” and run the program:

./studio.sh

1	./studio.sh

After a few seconds, we got into Android Studio 3.1.2 welcome screen. We can now click […]

May 13, 2018May 16, 2018 by Jean-Luc Aufranc (CNXSoft) - 20 Comments

How to Get Started with OpenCL on ODROID-XU4 Board (with Arm Mali-T628MP6 GPU)

Last week, I reviewed Ubuntu 18.04 on ODROID-XU4 board testing most of the advertised features. However I skipped on the features listed in the Changelog: GPU hardware acceleration via OpenGL ES 3.1 and OpenCL 1.2 drivers for Mali T628MP6 GPU While I tested OpenGL ES with tools like glmark2-es2 and es2gears, as well as WebGL demos in Chromium, I did not test OpenCL, since I’m not that familiar with it, except it’s used for GPGPU (General Purpose GPU) to accelerate tasks like image/audio processing. That was a good excuse to learn a bit more, try it out on the board, and write a short guide to get started with OpenGL on hardware with Arm Mali GPU. The purpose of this tutorial is to show how to run an OpenCL sample, and OpenCL utility, and I won’t go into the nitty gritty of OpenCL code. If you want to learn more […]

April 26, 2018April 26, 2018 by Karl Johnson - 9 Comments

How-to Make Your Own 3D Printing Goo

Karl here…just want to do a little post about bed adhesion and what I have been doing for the past month. What spurred this is I saw a ton of videos on Magigoo a while back. It is a product that you wipe on your glass/mirror bed and 3D prints stick very well to it and once the bed cools the part pops off very easily. It is quite expensive and it got me to think about alternatives. I have used glue stick almost exclusively while printing on glass/mirror but a lot of time the prints stick too well and prints can get marred up removing with a tool. It is quite easy to make. 1 cup water and 1 large 22g Elmers glue stick. I put both in water and let sit thinking it would dissolve on its own. After several hours I got impatient and put it in […]

April 21, 2018April 24, 2018 by Jean-Luc Aufranc (CNXSoft) - 7 Comments

Run Linux Apps in (PixelBook) Chromebook with Crostini VM

Ever since the first Chromebooks were released, it has been possible to run Ubuntu or other Linux distributions using Crouton (Chromium OS Universal Chroot Environment) on Chrome OS devices, but that requires to enable developer mode, which disables some of security features that come with Chrome OS. Google has now make it easier and safer with Crostini VM that does not require developer mode. The only downsides for now are that it only works on Google Pixelbook, and you need to install/run Chrome OS v67 dev channel with the #enable-cros-container flag enabled. Using Crostini is fairly straightforward. First start crosh terminal with Ctrl++Atl+t, and running the following command to create a VM, and launch a container:

vmc start dev
run_container.sh --container_name=stretch --user=<username> --shell

1 2	vmc start dev run_container.sh --container_name=stretch --user=<username> --shell

This will start a Debian Stretch environment with networking and GUI support, so you can install & run programs like you would in Debian (e.g. apt install htop). Kevin Tofel at AboutChromebooks managed […]

April 15, 2018April 16, 2018 by Jean-Luc Aufranc (CNXSoft) - 23 Comments

How to Install and Use Ace Stream Easily in Ubuntu / Mint Linux

Ace Stream enabling the streaming of videos using P2P (peer-to-peer) technology – specifically BitTorrent protocol – and is especially useful for live streams, but also works for Audio and Video on Demand, and IOTT (Interactive-Over-The-Top). Ace Stream is implemented in a fork of VLC (Ace Player HD) working in Windows, Linux and Android, and I’ve found Full HD quality to be higher than services like YouTube, and with less buffering provided enough users watches the stream. It’s easy to use in Windows, and there used to be an Android app installable from the Play Store but it’s been removed, possibly because of the association of the solution with piracy. But just like Kodi, it’s up to do what you want to use it for. Using Ace Player was easy in Ubuntu up to version 14.04 thanks to a ppa, but with Ubuntu 16.04 it become a little more complicated as you […]

April 2, 2018April 7, 2018 by Jean-Luc Aufranc (CNXSoft) - 15 Comments

Cloudflare Introduces 1.1.1.1 Privacy-focused DNS Service with DNS over HTTPS and DNS over TLS Support

The web is becoming more secure as more and more websites leverage HTTPS, which also improves privacy since the only nodes that know which exact page you are accessing should be your computer/device and the server running the website. If you’re using a search engine, they will also know and potentially get track of your history depending on your favorite search engine. One thing that’s still often unencrypted are DNS requests which convert a website name into an IP address. The servers are also often provided by your ISP, so they may not know which exact page you’ve accessed, but they can still keep track of the websites you’ve visited. Depending where you live, your government may also block DNS servers in your country during “periods of unstability”, so third-party DNS services can be useful. For example, using 8.8.8.8 or 8.8.8.4 from Google, and now 1.1.1.1 or 1.0.0.1 from Cloudflare, […]

March 27, 2018March 27, 2018 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

Google Has Made it Harder to Load Google Apps on Uncertified Devices

Cheap TV boxes or development boards that can run Android, are not normally certified by Google, but you can still use Google Apps like the Google Play Store either directly with the manufacturer pre-loading the packages on the device, or manually by installing the packages yourself. According to a report by XDA developers, Google has made it harder to load Gapps on uncertified devices starting from March 16th, and if you try to login on a new custom firmware you may get the message “Device is not certified by Google” when accessing a Google app. The change will apparently only affect newly built firmware , so older firmware should still be able to access Google Play store (TBC). We’ll have to see how it turns out. Google Play Services is said to check ro.build.fingerprint for the build date, but it seems too easy to work around this, if that’s the […]

March 16, 2018September 26, 2021 by Jean-Luc Aufranc (CNXSoft) - 12 Comments

How to Run Linux on RISC-V with QEMU Emulator

RISC-V open-source architecture is starting to become more and more interesting thanks to the growing RISC-V hardware & software ecosystem, and with the recent release of HiFive Unleashed, we even have a board capable of running Linux. The only problem: it costs $999. But luckily, it’s possible to experiment with Linux on RISC-V without extra hardware, just using your current PC. Imperas offers a commercial solution working on both Windows and Linux that relies on busybear-linux RISC-V Linux root filesystem comprised of busybox and dropbear SSH server. The rootfs also works with QEMU, so I tried it in Ubuntu 16.04. The instructions on Github are quite easy to follow. My computer is powered by an AMD FX8350 processor coupled with 16GB RAM, and the whole process took around 2 hours, so better use the fastest computer possible. It also requires around 26 GB of storage on your build machine. First, […]