KaOS is pleased to announce the October release of a new stable ISO.

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Plasma 5.14.0 was announced just a few days ago and is already included in this ISO. Highlights of this version include a new Display Configuration widget for screen management which is useful for presentations, the Audio Volume widget now has a built-in speaker test feature moved from Phonon settings, Plasma now warns on logout when other users are logged in, fixed non-centered task switchers on Wayland and the Kickoff application menu now switches tabs instantly on hover.

A new Glibc 2.27/GCC 7.3.1 based toolchain is among the many changes to the base of the system. Updates to Boost, ICU, x265, Protobuf, Net-SNMP, Qt required the rebuild of a large percentage of the KaOS repositories.

As always with this rolling distribution, you will find the very latest packages for the Plasma Desktop, this includes Frameworks 5.51.0, Plasma 5.14.0 and KDE Applications 18.08.2. All built on Qt 5.11.2.

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KaOS’ creation Croeso (Welsh for welcome) for helping with configuring a new install is included. It will run on the newly installed system and offers to adjust some 15 commonly used settings and replaces the formerly used, PyQt based first run wizard Kaptan. It also includes a custom Wallpaper selector, distribution info, and news. It is written in QML and fits well with the Welcome application used in the Live system. The latter now includes a fully rewritten (also in QML) Installation Guide.

The artwork includes custom icon themes for light and dark themes. Midna and Midna Dark both create a complete unified look from boot-up all the way through logout. There was a complete redesign of the Midna theme for 2018. Some 2500 new icons in use, rewritten sddm login theme and a KaOS community selected new wallpaper (created by Jomada).

There is an option to verify the authenticity of downloaded KaOS ISO files through GPG signature verification, see the Download page for further details and instructions.

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Base of the system

Most notable major updates to the base of the system are Glibc 2.27 , GCC 7.3.1, Linux 4.18.12, Boost 1.68.0, Wayland 1.16.0, GStreamer 1.14.4, ICU 62.1, Systemd 239, Mesa 18.2.2, NetworkManager 1.14.0, Rust 1.29.1, Nano 3.1, Bison 3.1, Apache 2.4.35 and Qt 5.11.2

KaOS repositories no longer provide Qt 4. It is a good three years ago that development for Qt 4 stopped, late 2015 all support including security fixes ended. Any application that has not made the transition to Qt 5 in all this time can no longer be supported in KaOS. Either they actually are no longer maintained or their development is ignoring the implications of building on a possible insecure toolkit.

The Linux kernel has all the needed ucode build-in for a fully automated Early Microcode update.

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Common Notes

KaOS uses a First Run Wizard. It will run on the newly installed system and enables with just a few clicks to adjust mouse behavior, menu launcher, desktop theme, used wallpaper, color scheme, widget style, window decoration and virtual desktops used. With one click this Wizard will also link to KaOS Documentation and all contact info.

Also included is a KaOS specific tool to write ISO files to USB. Not only does IsoWriter write to USB it also gives the option to recover your USB stick after using it for an ISO, something that regular dd copy or the previously used Imagewriter were not able to do. New in this version is the ability to verify the integrity of the written USB flash drive in comparison to the downloaded ISO file. This can be done in Dolphin too, right-click the ISO file, select Actions then select Verify ISO Write

This ISO uses the CRC and finobt enabled XFS filesystem as default. CRCs enable enhanced error detection due to hardware issues, whilst the format changes also improves crash recovery algorithms and the ability of various tools to validate and repair metadata corruptions when they are found. The free inode btree does not index used inodes, allowing faster, more consistent inode allocation performance as filesystems age.

KaOS uses the Systemd provided Systemd-boot for UEFI installs.

Calamares

The used installer framework has moved to the 3.2 series. Highlights of the changes and additions:

• The partition module supports RAID devices, but only when Calamares is compiled with the newest KPMCore release.
• The keyboard module now handles the (bogus) Austrian keymap for the system console properly.
• Various off-by-one-sector errors in the automatic partitioning mode have been corrected. In addition, swap space is calculated a little more conservatively.
• The search paths for QML files, branding descriptors, and module descriptors have been revamped and now self-document in the log.

Known issues:

• Installing on RAID is currently not possible

To create reliable installation media, please follow the instructions from the Download page. KaOS ISO’s do not support Unetbootin or Rufus, and DVDs need a burn speed no higher than 4x.