Ubuntu 14.10 发布

jopen 9年前

Ubuntu 是一份完整的桌面Linux操作系统，它可免费获得，并带有社团及专业的支持。Ubuntu社团按照Ubuntu宣言里所铭记的思想而组建：软件应免费提供，软件工具应能以人们本地语种的形式可用且不牺牲任何功能，人们应拥有定制及改变他们软件的自由，这包括以任何他们认为适宜的方式。Ubuntu是一个古非洲语单词，意指对他人的博爱。Ubuntu 发行将这种博爱之心带到了软件的世界中。

Introduction

These release notes for Ubuntu 14.10 (Utopic Unicorn) provide an overview of the release and document the known issues with Ubuntu 14.10 and its flavors.

Support lifespan

Ubuntu 14.10 will be supported for 9 months for Ubuntu Desktop, Ubuntu Server, Ubuntu Core, Kubuntu, Ubuntu Kylin along with all other flavours.

Official flavour release notes

Find the links to release notes for official flavors here.

Get Ubuntu 14.10

Download Ubuntu 14.10

Images can be downloaded from a location near you.

You can download ISOs from:

Upgrading from Ubuntu 14.04 LTS

To upgrade on a desktop system:

Press Alt+F2 and type in "update-manager" (without the quotes) into the command box.
Update Manager should open up and tell you: New distribution release '14.10' is available.
Click Upgrade and follow the on-screen instructions.

To upgrade on a server system:

Install the update-manager-core package if it is not already installed.
Launch the upgrade tool with the command sudo do-release-upgrade.
Follow the on-screen instructions.

Note that the server upgrade will use GNU screen and automatically re-attach in case of dropped connection problems.

There are no offline upgrade options for Ubuntu Desktop and Ubuntu Server. Please ensure you have network connectivity to one of the official mirrors or to a locally accessible mirror and follow the instructions above.

New features in 14.10

Please see the Utopic blueprint list for details.

Please test and report any bugs you find:

http://help.ubuntu.com/community/ReportingBugs

Updated Packages

As with every new release, packages--applications and software of all kinds--are being updated at a rapid pace. Many of these packages came from an automatic sync from Debian's unstable branch; others have been explicitly pulled in for Ubuntu 14.10.

For a list of all packages being accepted for Ubuntu 14.10, please subscribe to utopic-changes.

Linux kernel 3.16

The Ubuntu 14.10 release delivers a v3.16 based kernel. This brings a significant number of bug fixes and new hardware support including expanded architecture support for Power 8 and arm64 platforms. It also includes support for Intel Cherryview, Haswell, Broadwell and Merrifield systems, and initial support for Nvidia GK20A and GK110B GPU’s. There is improved graphics performance on many Nvidia, Intel and ATI Radeon devices and also audio improvements with support for the Radeon .264 video encoder. Expanded platform support is enabled via support for 64 bit EFI boot on 32 bit EFI BIOS. This release also brings performance improvements in suspend/resume times.

For developers we see significant improvements in tracing and debugging with new triggers for kernel trace points, and expansion of uprobe support. This release also brings a new experimental deadline CPU scheduler.

For servers we see better support for bursty workloads, improved resident set tracking, and a better NUMA migration strategy. Filesystem support is also improved with faster file allocations for database use and several filesystems show performance improvements including XFS and Btrfs. XFS now has stabilized its v5 format and sports expanded direct I/O support. Btrfs now supports per directory switchable compression modes. raid5 performance is also improved. This release also brings improvements to networking, including a new packet scheduler for high latency links, and efforts to bring IPv6 support in line with IPv4. We see performance improvements for openvswitch and VTI tunneling. As always, various new pieces of hardware are now supported including Intel AVX-512 and Intel MXP.

On cloud we see Hyper-V, XEN, and KVM networking performance improvements. Hyper-V now supports the hypervisor driven file copy and reference time services. For KVM we see improved support for passing through new x86 vector instructions.

On the security front we see full Kernel Address Space Layout Randomisation applied to the kernel and its modules, plus the closure of a number of information leaks in /proc. We also see additional support for cryptographic devices.

AppArmor

AppArmor added support for fine-grained mediation of unix(7) abstract and anonymous sockets and also added various policy updates and bug fixes. AppArmor policy has been adjusted for packages that ship it to work with these changes, but local policy may need to be adjusted unix rules. See man 5 apparmor.d for details.

Oxide

Oxide has been updated to use the latest Chromium Content API and includes numerous bug fixes and features to better support webbrowser-app, webapps and apps using UbuntuWebViews. Oxide is a webview based on Chromium to deliver web content. Oxide allows us to better support 3rd party developers and applications within the Ubuntu archive by providing a fast, secure and up to date webengine library for the duration of this release. While other web content libraries such as those based on webkit are available, their maintenance will be limited to new upstream minor version releases only, and application developers are encouraged to use Oxide instead.

Ubuntu Desktop

The general theme for 14.10 on the desktop is one of bug fixes and incremental quality improvements.

Unity

Unity has had many bugs fixed and features improved support for High-DPI displays.

General

Firefox is updated to version 33 and Chromium is updated to version 38.

Gtk updated to version 3.12. Qt updated to version 5.3.

Support for IPP Everywhere printers is added, and printers shared from Ubuntu can emulate IPP Everywhere printers. IPP printers require no configuration under Ubuntu. More information about IPP Everywhere is available here: http://www.pwg.org/ipp/everywhere.html

LibreOffice

LibreOffice 4.3 brings a lot of improvements including improved PDF support, new features in Writer, Calc and Impress (word processor, spreadsheet and presentations). Full details here: https://wiki.documentfoundation.org/ReleaseNotes/4.3

Ubuntu Developer Tools Centre

This new tool allows developers to quickly and easily setup a variety of development environments on their Ubuntu Desktop. More information here: http://blog.didrocks.fr/post/Ubuntu-loves-Developers

Xorg

With Xorg 1.16, we have better support for non-pci devices. Xephyr now supports DRI3. The mesa 10.3 update has support for AMD Hawaii GPU's, improved support for dri3 offloading, the freedreno open source driver, and preliminary support for using nouveau on maxwell devices.

Ubuntu Server

OpenStack 2014.1

Ubuntu 14.10 includes the OpenStack 2014.2 (Juno) release of the following projects in Ubuntu main:

OpenStack Compute - Nova
OpenStack Identity - Keystone
OpenStack Imaging - Glance
OpenStack Block Storage - Cinder
OpenStack Networking - Neutron
OpenStack Object Storage - Swift
OpenStack Telemetry - Ceilometer
OpenStack Orchestration - Heat
OpenStack Dashboard - Horizon

WARNING: Upgrading an OpenStack deployment is a non-trivial process and care should be taken to plan and test upgrade procedures which will be specific to each OpenStack deployment.

Make sure you read the OpenStack Charm Release Notes for more information.

Libvirt 1.2.8

Containers launched with libvirt-lxc can now be apparmor-protected.

Libvirt now provides cgmanager support allowing use of libvirt inside containers without cgroups mounted.

Migration of pc-1.0 VMs from a 12.04 host must be done first to a 14.04 host, to the pc-1.0-precise machine type. From there, they may be converted to a new machine type, such as pc-i440fx-trusty, and migrated to a 14.10 host.

Qemu 2.1

Kvm is now supported on the ppc64le architecture.

Cgmanager 0.32

Cgmanager now has a new compiled client tool, and supports new methods including Prune, ListTasksRecursive, and ListControllers. It now supports the features needed for systemd-shim to properly close sessions.

LXC 1.1

This includes container checkpoint and restart as a tech preview.

cloud-init 0.7.6

Cloud-init 0.7.6 brings several bug fixes along with support for booting ubuntu with systemd. Also featured is improvements when using vendor-data on OpenStack.

bcache

bcache support is now included as a technology preview, enabled in the kernel and via the userspace package bcache-tools, but without installer support. We highly recommend that you take full system backups before experimenting with it. It has been enabled with a focus on server use cases. Some desktop use cases should also work, but we have observed some issues when attempting to combine bcache use with LVM and md.

Juju

Juju, the service orchestration tool for Ubuntu, has been updated to the latest current stable release, 1.20.10. See the upstream release notes for full details of all new features and improvements in this release.

Docker

Docker 1.2 is released in Utopic. For the absolute latest upstream version of Docker, please follow the instructions here https://docs.docker.com/installation/ubuntulinux/ titled "If you'd like to try the latest version of Docker"

MAAS

MAAS has been updated to the latest current beta release, 1.7-beta8. Many new features have been added, and lots of bugfixes too. Full release notes will be available shortly.