The release of the Ubuntu 21.04 “Hirsute Hippo” distribution is available, which is classified as an interim release, updates for which are formed within 9 months (support will be carried out until January 2022). Installation images are created for Ubuntu, Ubuntu Server, Lubuntu, Kubuntu, Ubuntu Mate, Ubuntu Budgie, Ubuntu Studio, Xubuntu, and UbuntuKylin (China edition).
- GNOME Shell 3.38, built using GTK3, continues to be shipped as a desktop, but GNOME applications are predominantly synchronized with GNOME 40 (the desktop transition to GTK 4 and GNOME 40 is considered premature).
- By default, a session based on the Wayland protocol is enabled. When using proprietary NVIDIA drivers, by default, an X-server-based session is offered as before, but for other configurations this session is transferred to the category of options. It notes that many of the GNOME session restrictions on Wayland have been addressed recently, which have been identified as issues blocking the transition to Wayland. For example, it is now possible to share your desktop using the Pipewire media server. The first attempt to migrate Ubuntu by default to Wayland was made in 2017 in Ubuntu 17.10, but in Ubuntu 18.04, due to unresolved issues, the traditional X.Org Server-based graphics stack was returned.
- A new dark Yaru theme has been proposed and the icons for identifying file types have been updated.
- Added support for the Pipewire Media Server to enable screen recording, improve audio support in sandboxed applications, provide professional audio processing capabilities, eliminate fragmentation, and unify audio infrastructure for different applications.
- Added support for smart card authentication (using pam_sss 7).
- The ability to move resources from applications using the drag & drop method has been added to the desktop.
- In the settings, you can now change the power consumption profile.
- Intallator has added support for creating spare keys to restore access to encrypted partitions, which can be used for decryption in case of password loss.
- Improved integration with Active Directory and provided the ability to access Active Directory with GPO (Group Policy Objects) support immediately after installation.
- The model of access to user home directories in the system has been changed – home directories are now created with 750 (drwxr-x —) rights, which grant access to the directory only to the owner and group members. For historical reasons, Ubuntu users’ home directories were previously created with permissions 755 (drwxr-xr-x), allowing one user to view the contents of another’s directory.
- The Linux kernel has been updated to version 5.11, which includes support for Intel SGX enclaves, a new mechanism for intercepting system calls, virtual auxiliary bus, prohibiting the assembly of modules without MODULE_LICENSE (), fast filtering of system calls in seccomp, discontinuation of support for the ia64 architecture, transfer of WiMAX technology to branch “staging”, the ability to encapsulate SCTP in UDP.
- By default, the nftables packet filter is enabled. To maintain backward compatibility, the iptables-nft package is available, which provides utilities with the same command line syntax as in iptables, but translates the resulting rules into nf_tables bytecode.
- Improved UEFI SecureBoot support on x86_64 (amd64) and AArch64 (arm64) systems. The layer for organizing verified boot has been transferred to the use of the SBAT (UEFI Secure Boot Advanced Targeting) mechanism, which solves problems with the revocation of certificates. SBAT support has been added to the grub2, shim and fwupd packages. SBAT implies the addition of new metadata, which is digitally signed and can be additionally included in the lists of allowed or prohibited components for UEFI Secure Boot. This metadata allows revocation to manipulate component version numbers without the need to regenerate keys for Secure Boot and without generating new signatures for the kernel, shim, grub2, and fwupd.
- Updated system components and programming languages, including GCC 10.3.0, binutils 2.36.1, glibc 2.33, Python 3.9.4, Perl 5.32.1. LLVM 12, Go 1.16, Rust 1.50, OpenJDK 16, Ruby 2.7.2, Rails 6.
- Updated versions of applications and subsystems, including Mesa 21.0, PulseAudio 14, BlueZ 5.56, NetworkManager 1.30, Firefox 87, LibreOffice 7.1.2, Thunderbird 78.8.1, Darktable 3.4.1, Inkscape 1.0.2, Scribus 18.104.22.168, OBS 26.1.2, KDEnlive 20.12.3, Blender 2.83.5, Krita 4.4.3, GIMP 2.10.22.
- Updated components for server systems, including PostgreSQL 13.2, Samba 4.13.3, QEMU 5.2, SSSD 2.40, Net-SNMP 5.9, DPDK 20.11.1, Strongswan 5.9.1, Open vSwitch 2.15, Chrony 4.0, OpenVPN 2.5.1, Virt- manager 3.2.0, Libvirt 7.0, Rsyslog 8.2102.0, Docker 20.10.2, OpenStack Wallaby.
- Raspberry Pi builds include Wayland support. Added GPIO support (via libgpiod and liblgpio). Compute Module 4 boards now support Wi-Fi and Bluetooth.
- Added assemblies for HiFive SiFive Unleashed and HiFive SiFive Unmatched boards based on RISC-V architecture.
- To work with iSCSI, instead of tgt, the targetcli-fb toolkit is used, which has higher performance, additional capabilities and support for SCSI 3 clustering.
- Ubuntu Server includes the needrestart package, which runs at the end of every APT transaction, detects changes that require a restart, and informs the administrator about it.
- Support for the lua module for nginx, which is not compatible with new versions of nginx, has been discontinued (instead of a separate module, the project is now developing OpenResty, a special edition of Nginx with integrated LuaJIT support).
- Kubuntu offers the KDE Plasma 5.21 desktop and the KDE Applications 20.12.3 suite. Qt framework has been updated to version 5.15.2. The default music player is Elisa 20.12.3. Updated versions of Krita 4.4.3 and Kdevelop 5.6.2. A Wayland-based session is available, but not enabled by default (to activate on the login screen, select “Plasma (Wayland)”).
- Xubuntu has updated the Xfce desktop to version 4.16. The basic package includes Hexchat and Synaptic applications. On the desktop, by default, the right-click application menu is disabled and shortcuts to file systems and external drives are hidden.
- Ubuntu MATE continues to ship the MATE 1.24 desktop release.
- Ubuntu Studio uses the new Agordejo music session manager by default; Studio Controls 2.1.4, Ardor 6.6, RaySession 0.10.1, Hydrogen 1.0.1, Carla 2.3-rc2, jack-mixer 15-1, lsp-plugins 1.1.29 are updated …
- Lubuntu offers the LXQt 0.16.0 graphical environment.
- Ubuntu Budgie leverages the new Budgie 10.5.2 desktop release. Added assemblies for Raspberry Pi 4. Added optional macOS-style theme. In the Shuffler, an interface for quickly navigating through open windows and grouping windows on a grid, the Layouts interface has been added for grouping and launching several applications at once, as well as the ability to lock the position and size of the application window. and New applets budgie-clipboard-applet (clipboard management) and budgie-analogue-applet (analogue clock) are proposed. Updated desktop skin, default dark theme. Budgie Welcome offers a tab-based interface for navigating through themes.
Additionally, the community has proposed two unofficial variants of Ubuntu 21.04: Ubuntu Cinnamon Remix 21.04 with a Cinnamon desktop and Ubuntu Unity Remix 21.04 with a Unity desktop.
A source: https://www.opennet.ru/opennews/art.shtml?num=55005
A source: OpenNET
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