[Review]: Ubuntu 18.04 LTS (Bionic Beaver)
Ubuntu 18.04 LTS out now
Ubuntu is most popular Linux distributions that designed for desktop, server and cloud environments. The latest LTS (Long Term Support) version out now. Ubuntu LTS release every two years and LTS version offers five year support. The below table shows active Ubuntu versions:
End of Life date
Ubuntu 16.04.4 LTS
Ubuntu 16.04.3 LTS
Ubuntu 16.04.2 LTS
Ubuntu 16.04.1 LTS
Ubuntu 16.04 LTS
Ubuntu 14.04.5 LTS
Ubuntu 14.04.4 LTS
Ubuntu 14.04.3 LTS
Ubuntu 14.04.2 LTS
Ubuntu 14.04.1 LTS
Ubuntu 14.04 LTS
New Features and Improvements in Ubuntu 18.04
Each new release of Ubuntu has new features, so there is some new features in Ubuntu 18.04 same as ancestors.
Linux kernel 4.15
Ubuntu 18.04 ships with a v4.15 based Linux kernel, enabling the latest hardware and peripherals available from IBM, Intel, and others. The 18.04 kernel delivers new features inherited from upstream, including:
- CPU controller for the cgroup v2 interface
- AMD secure memory encryption support
- The latest MD driver with software RAID enhancements
- Improved power management for systems with SATA Link Power Management
We also see notable Ubuntu specific achievements with:
- Linux security module stacking support
- Support for signing of POWER host and NV kernels
- Backport improved support for IBM and Intel hardware from Linux 4.16
As of 18.04 release, OpenJDK 10 is the default JRE/JDK. Once OpenJDK 11 reaches GA in September 2018, it will become the default in 18.04.
OpenJDK 8 has moved to universe and will remain available there for the life of 18.04, to provide migration time for packages, custom applications, or scripts that can’t be build with OpenJDK 10 or 11. OpenJDK 8 will be updated in 18.04 until Ubuntu 16.04 LTS reaches EOL in April 2021.
In Ubuntu 18.04 LTS, gcc is now set to default to compile applications as position independent executables (PIE) as well as with immediate binding, to make more effective use of Address Space Layout Randomization (ASLR). All packages in main have been rebuilt to take advantage of this, with a few exceptions.
Mitigations are in place to protect against Spectre and Meltdown.
bolt and thunderbolt-tools have been promoted to main to provide security controls for Thunderbolt devices.
Default CIFS/SMB protocol version change in CIFS mounts
Since 17.10, the default SMB protocol used when mounting remote CIFS filesystems via mount.cifs (from the cifs-utils package) changed to 2.1 or higher, depending on what is negotiated with the server.
Teaming support has been added to Network Manager by libteam.
There is many other features and enhancements in the new release that you can find them on the release note document.
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