Language Selection

English French German Italian Portuguese Spanish

Ubuntu: Unbreaking Unbootable Ubuntu, Snaps Shrunk and More

Filed under
Ubuntu

  • Unbreaking Unbootable Ubuntu

    I run Ubuntu Hirsute - the development release which will become 21.04 - on a bunch of systems. It’s a trade-off though, getting the latest crack each and every day. Being at the bleeding edge of new packages landing means I can experience brand new shiny bugs on my systems. Bugs like 1915579 which rendered my system unbootable.

  • Honey, I Shrunk the Snap! | Ubuntu

    The year is 1989. I bought a computer game called F-16: Combat Pilot, a flight simulator featuring free-flight, five types of single-player missions, a full campaign mode, serial-port multiplayer, and then some. Gloriously wrapped in four colors and magnetized on two single-density 5.25-inch floppy disks. Total size: 680 KB.

    Nowadays, it is not uncommon for individual applications to weigh dozens if not hundreds of megabytes. But it doesn’t have to be that way. In Linux, you can save some space by using libraries that are shared across multiple applications (hence their name, shared libraries). When it comes to self-contained application formats like snaps, the tables are turned once again, as snaps bundle all the necessary dependencies inside, and thus take more disk space. If you want to make your snapped applications as small and lean as possible, we have a few neat suggestions.

    [...]

    The final artifact of the snap build process is a compressed squashFS file, with the .snap suffix. Originally, snaps were compressed using the xz algorithm, for highest compatibility with the widest range of devices. More recently, in order to help speed us snap launch times, we also introduced the use of the lzo algorithm, which results in 2-3x application startup times improvements. The main reason for this is the lesser compression used in lzo compared to xz, meaning the system needs fewer CPU cycles, and thus less time, to uncompress the snap on the system. However, it also introduces size inflation.

    [...]

    Disk utilization matters less now than it did a decade or two ago, but you can still try to make your applications small and tidy. This also helps reduce bandwidth usage, improves portability, and if you’re using system backups, reduces the time needed to copy all the relevant data.

    With snaps, there are many ways you can trim down on the digital excess, including the use of extensions, sparing use of necessary runtime dependencies, and pruning the extras from the prime directory. Not only will your snaps be smaller in size, you will also ensure higher consistency, better system integration and improve the application startup time. All these are important, highly noticeable elements of the user experience. If you have any other suggestions or ideas on how to conserve space or optimize snap creation, please join our forum and share your thoughts.

  • Canonical keynote at Embedded World 2021: Bosch Rexroth achieves complete IoT automation with Ubuntu Core

    series that’s already being used in the current stable release, Ubuntu 20.10 (Groovy Gorilla). But that good news I want to share with you today is the fact that Ubuntu 21.04 will also offer several apps from the GNOME 40 stack.

  • Bad Voltage 3×24: Weaponised Rooster

    Stuart Langridge, Jono Bacon, and special guest star Alan Pope present Bad Voltage, in which we are large and in charge, there is ancient history about electricians and phones...

Stephen Michael Kellat's take

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.

More in Tux Machines

today's leftovers

     
  • What is Raspberry Pi 4 “Model B”? [Ed: I'm still waiting for them to formally apologise for going behind customers' backs, making secret deals with Microsoft to put Microsoft malware on all those devices]

    Raspberry Pi has conquered the world of SoC (System on a Chip). It has already garnered millions of followers since its release in 2012. Not only is it inexpensive, but it’s also versatile, modular, and multi-purpose. It has become popular not only as a credit-sized computer board but also as a controller in electronic, robotics, and IoT projects. The size, features, and price drive the popularity of the Pi, especially in the DIY community. To keep up with the current technological trends, the tiny board has undergone plenty of upgrades over the years, and there have been many varieties so it can cater to the needs and demands of its users. In 2019, the Raspberry Pi Foundation released the fourth generation of the multi-purpose board, the Raspberry Pi 4 B. It is the most powerful Pi to date, sporting huge upgrades from its predecessors. The compact board is touted to deliver a PC-level performance, and it didn’t disappoint.

  • Kentaro Hayashi: Grow your ideas for Debian Project

    There may be some "If it could be ..." ideas for Debian Project. If idea is concreate and worth to make things forward, it should make a proposal for Project Funding. [...] I'm not confident whether mechanism works, but Debian needs change.

  • Sam Thursfield: Calliope, slowly building steam

    There are some interesting complexities to this, and in 12 hours of hacking I didn’t solve them all. Firstly, Bandcamp artist and album names are not normalized. Some artist names have spurious “The”, some album names have “(EP)” or “(single)” appended, so they don’t match your tags. These details are of interest only to librarians, but how can software tell the difference? The simplest approach is use Musicbrainz, specifically cpe musicbrainz resolve-ids. By comparing ids where possible we get mostly good results. There are many albums not on Musicbrainz, though, which for now turn up as false positives. Resolving Musicbrainz IDs is a tricky process, too — how do we distinguish Multi-Love (album) from Multi-Love (single) if we only have an album name? If you want to try it out, great! It’s still aimed at hackers — you’ll have to install from source with Meson and probably fix some bugs along the way. Please share the fixes!

  • Neovide Is A Graphical Neovim Client Written In Rust

    Neovide is a really cool GUI client for Neovim. Although it essentially functions like Neovim in the terminal, Neovide does add some nice graphical improvements such as cursor animations and smooth scrolling. It even has me thinking about making it my new "vim" alias.

Linux 5.11.13, 5.10.29, 5.4.111, 4.19.186, 4.14.230, 4.9.266, and 4.4.266

Get involved with Mageia, become a Packager

With Mageia 8 just released and development for Mageia 9 getting underway in Cauldron, the unstable branch of Mageia, now is a great time to get involved with packaging. We are starting to look at the features that we want to include for Mageia 9, and as it is so early in the development cycle, now is the time for major developments, or big updates to key pieces of software. This is a great time to join the project as you can propose features you would like to see, help to implement large changes or see how a distribution evolves through development, stabilisation and then is released. If there is an application that you are interested in, if you want to help maintain part of the distribution, or if you want to learn something new, there are many opportunities to do so with the packaging team. Read more

Google does not want you to tell your players about your donation page

I recently updated Pixel Wheels banner image on Google Play. That triggered a review of the game: shortly after the update I received a message telling me Pixel Wheels was "not compliant with Google Play Policies". What nefarious activity does the game engage in? Sneak on users? Mine bitcoins? [...] Meanwhile you can still get the game from F-Droid or itch.io, since they do not have a problem with a link to a donation page. Read more