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Ubuntu Core: Raspberry Pi 4 and Beyond

Filed under
Hardware
Ubuntu
  • Attaching a CPU fan to a RPi running Ubuntu Core

    When I purchased my Raspberry Pi4 I kind of expected it to operate under similar conditions as all the former Pi’s I owned …

    So I created an Ubuntu Core image for it (you can find info about this at Support for Raspberry Pi 4 on the snapcraft forum)

    Runnig lxd on this image off a USB3.1 SSD to build snap packages (it is faster than the Ubuntu Launchpad builders that are used for build.snapcraft.io, so a pretty good device for local development), I quickly noticed the device throttles a lot once it gets a little warmer, so I decided I need a fan.

  • A reference architecture for secure IoT device Management

    One of the key benefits of IoT is the ability to monitor and control connected devices remotely. This allows operators to interact with connected devices in a feedback loop, resulting in accelerated decisions. These interactions are mediated by a device management interface, which presents data in a user-friendly UI. The interface also serves as a client to remotely control devices in the field. Device management is, therefore, a key component of IoT solution stacks, with a significant impact on the ROI of such deployments.

    However, there is no one size fits all when it comes to device management solutions. IoT solutions are deployed in various contexts. The purpose, the devices, and the users involved vary from one deployment to another, even within the same industry. It is, therefore, challenging to find a ready-made device management solution perfectly suitable to any given deployment.

    Security is the critical requirement that these deployments invariably share, for it must be implemented in line with the best practices. Secure authentication and communication encryption are indispensable for the management of mission-critical device fleets.

More in Tux Machines

[libre-riscv-dev] power pc

So as you know, the RISCV Foundation is seriously impeding progress. There
is huge momentum around RISCV itself, however as far as open *innovation*
is concerned, the sheer arrogance of the Foundation in failing to respect
the combination of Libre goals and business objectives has us completely
isolated from key critical resources such as the closed secret lists and
wiki.

We cannot even get access to documentation explaining how to propose new
extensions.

I have been considering for some time to reach out to MIPS and PowerPC.
Yesterday I wrote to the OpenPower Foundation and was really surprised and
delighted to hear back from Hugh Blemings, whom I worked with over 20 years
ago.

I outlined some conditions (no NDAs, open mailing lists, use of
Certification Marks and Compliance Suites) and he replied back that this
was pretty much along the lines of what they were planning.

I will have a chat with him some time, in the meantime I found the spec:

https://openpowerfoundation.org/?resource_lib=power-isa-version-3-0

It is eeenooormous, however Hugh reassures me that they want to break it
into sections.

Why would we even consider this?

The lesson from RISCV is really clear: if the ISA is set up as a cartel,
Libre innovation is not welcome.

If we had a goal to just *implement* a *pre existing* Extension, there
would be no problem.

It is the fact that we wish to implement entirely new extensions, for CPU
and GPU *and* VPU purposes, but not as a separate processor (which would be
classified as "custom") that is the "problem".

So starting at page 1146, we need to work out how to shoe horn a ton of
stuff into the ISA, as well as fit 16 bit compressed in as well.

L.
Read more Also: Libre RISC-V Open-Source Effort Now Looking At POWER Instead Of RISC-V

Calamares grabs onto things

I’ve been working on Calamares, the Universal Linux Installer, for a little over two years – following up in the role Teo started. It’s used by Neon (for the dev version, not the user version) and Manjaro and lots of other Linux distributions. I’ve typically called it an installer for boutique distro’s, as opposed to the Big Five. Well, Debian 11 has plans. And lubuntu uses it as well (and has for over six months). Those seem pretty big. Read more

Programming: Automation, Python, Rust and More

  • Introducing your friends to automation (and overcoming their fear)

    Another fear that I face often from friends is that they don’t know any programming languages, and believing that if they don’t know how to code, then they can’t do automation. While I think we can all agree that knowing Bash, Python, Perl, or even PowerShell is useful when defining these processes to reduce human interaction, it is not always needed. Today we have the tools at our disposal to implement such processes without the absolute need to know a traditional programming language. For example, tools like Red Hat Ansible Tower and Azure DevOps let us take advantage of already created playbooks or plugins. Rarely do we see where one tool fits all, but just getting started with one tool is sometimes enough to get a feel for automation. In turn, that beginning is enough to gain confidence and see the true benefits of automating, which encourages us just enough to try learning something new.

  • Python 2.7.17 released

    Python 2.7.17 is now available for download. Note Python 2.7.17 is the penultimate release in the Python 2.7 series.

  • Python 2.7.17

    Python 2.7.17 is a bug fix release in the Python 2.7.x series. It is expected to be the penultimate release for Python 2.7.

  • Python 3.7.4 : Usinge pytesseract for text recognition.
  • Started a newsletter

    I started a newsletter, focusing on different stories I read about privacy, security, programming in general. Following the advice from Martijn Grooten, I am storing all the interesting links I read (for many months). I used to share these only over Twitter, but, as I retweet many things, it was not easy to share a selected few.

  • Indent datastructure for trees

    It is a preorder traversal of the conceptual tree, aggregating (depth, name) tuples into a list to form what I am calling the indent tree datastructure as it captures all the information of the tree but in a different datastructure than normal, and can be extended to allow data at each node and might be a useful alternative for DB storage of trees.

  • Daniel Silverstone: A quarter in review - Nearly there, 2020 in sight

    I have worked very hard on my Rustup work, and I have also started to review documentation and help updates for the Rust compiler itself. I've become involved in the Sequoia project, at least peripherally, and have attended a developer retreat with them which was both relaxing and productive. I feel like the effort I'm putting into Rust is being recognised in ways I did not expect nor hope for, but that's very positive and has meant I've engaged even more with the community and feel like I'm making a valuable contribution. I still hang around on the #wg-rustup Discord channel and other channels on that server, helping where I can, and I've been trying to teach my colleagues about Rust so that they might also contribute to the community. So initially an 'A', I dropped to an 'A-' last time, but I feel like I've put enough effort in to give myself 'A+' this time.

  • Dirk Eddelbuettel: RcppGSL 0.3.7: Fixes and updates

    A new release 0.3.7 of RcppGSL is now on CRAN. The RcppGSL package provides an interface from R to the GNU GSL using the Rcpp package. Stephen Wade noticed that we were not actually freeing memory from the GSL vectors and matrices as we set out to do. And he is quite right: a dormant bug, present since the 0.3.0 release, has now been squashed. I had one boolean wrong, and this has now been corrected. I also took the opportunity to switch the vignette to prebuilt mode: Now a pre-made pdf is just included in a Sweave document, which makes the build more robust to tooling changes around the vignette processing. Lastly, the package was converted to the excellent tinytest unit test framework.

  • Styled output in Poke programs

    I just committed support for styling in printf. Basically, it uses the libtextstyle approach of having styling classes that the user can customize in a .css file.

Audiocasts/Shows/Screencasts: Destination Linux, Open Source Security Podcast, Linux Action News, Test and Code, Pop_!OS 19.10 Run Through