UbuntuDesktop

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locked-by: hito

= New Features in Ubuntu =

Ubuntuの新機能

== Desktop Interface ==

 * There is a new way to quickly search and access menu and indicator actions, called the "HUD" (Heads-Up Display). Tap the Alt key and enter some letters and words, and it will show the corresponding entries, including some fuzzy matching; then press enter to execute the action. The search will include all menu entries of the currently focused application, as well as all indicator facilities (like managing emails, sound list, or logging out of the session). It learns from your previous choices to make the search more and more accurate for you.

 * System Settings has several new "[[http://www.omgubuntu.co.uk/2012/02/privacy-controls-minor-ui-tweaks-land-in-ubuntu-12-04/|options]]" to customize Unity's look and behavior.

 * [[http://www.omgubuntu.co.uk/2012/01/nautilus-quicklist-adds-bookmark-support-for-precise/|Nautilus quicklist]] support has been added to Unity launcher.

 * !ClickPad devices are trackpads where the physical button is integrated into the trackpad surface. Ubuntu 12.04 now has enhanced support for these devices. When the button is pressed on a !ClickPad device, a second finger may be used to drag the cursor.
   *!ClickPad support requires extra handling that conflicts with "Click Action" support. Click Actions allow for separate actions when multiple fingers are active on a trackpad. The default Ubuntu settings enable right button behavior when two fingers are in contact with the trackpad surface and the physical trackpad button is pressed. Because of conflicting behavior, !ClickPad devices do not support Click Actions in this release.
   * Most Synaptics brand !ClickPads are recognized out of the box. Apple !MacBook trackpads are recognized as well. Support for Apple Magic Trackpads and more Synaptics brand !ClickPads will follow in the next release.

 * Network Manager now uses dnsmasq for improved DNS reliability and support for split-DNS on VPN links. You can learn more [[http://www.stgraber.org/2012/02/24/dns-in-ubuntu-12-04/|here]].
 * IPv6 and IPv4 are now equally supported in Network Manager: an IPv4 address is no longer required for a connection to be considered as working.

デスクトップインターフェース

  • 新しいアプローチとして、手軽な検索やアクセス、Indicator操作を実現する「HUD」(Heads-Up Display)機能が搭載されました。「Alt」キーを押してから文字や単語を入力することで、関連するメニュー項目が表示されます。この機能はあいまい検索をサポートしています。行いたい項目を選択肢、「Enter」キーを押すことで実行できます。検索には「その時点で選択されているアプリケーション」のメニュー項目や、表示されているIndicatorアイテム(Eメール管理や音楽再生、セッションのログアウトなど)も含まれます。これまでの操作とは異なり、検索して選択するだけで、ありとあらゆる操作を行うことができます。
  • システムの設定には、新しい"オプション"が追加され、Unityの見た目や挙動をカスタマイズできるようになりました。

  • NautilusのクイックリストサポートがUnity Launcherに追加されました。

  • ClickPadは、タッチパッドに物理ボタンが統合され、見た目上区別できないタイプのデバイスです。Ubuntu 12.04ではこうしたデバイスのサポートをさらに強化し、ClickPadデバイスのボタンを押さえたまま、別の指でマウスカーソルを操作することができるようになりました。

    • ClickPadサポートは、「Click Action」機能と競合してしまうため、追加の制御が必要になります。Click Actionにより、複数の指でタッチパッドに触れた状態でクリックすることができます。Ubuntuのデフォルト設定では、Click Actionとして、「二本の指がタッチパッドに触れている状態でボタンが押された場合、右クリックとみなす」機能が設定されています。しかしながら、これはClickPadで求められる操作と競合するため、ClickPadデバイスでは、12.04においてはClick Actionは無効に設定されています。

    • 多くのSynaptics製ClickPadは、そのままの状態で動作します。AppleのMacBookトラックパッドも同様です。Apple Magic Trackpadや、より多くのSynaptic製ClickPadは、次のリリースで対応する予定です。

  • Network Managerは、dnsmasqを用いて名前解決の信頼性を強化し、また、VPNセッションにおけるDNSの使い分け(split-DNS)をサポートします。こちらに詳しい情報があります。

  • IPv6とIPv4は、Network Managerから等しくサポートされるようになりました。「ネットワークに接続された状態」になるために、IPv4アドレスは必須ではなくなりました。

== Desktop Applications ==

 * The default music player has been switched to [[http://projects.gnome.org/rhythmbox/|Rhythmbox]], which again includes the Ubuntu One music store.

 * [[http://www.libreoffice.org/|LibreOffice]] has been updated to 3.5.2.

 * [[https://live.gnome.org/|GNOME]] has been updated to 3.4.1. Read the GNOME 3.4 [[http://library.gnome.org/misc/release-notes/3.4/|Release Notes]] to learn what's new and improved. A few highlights include:
   - Files (Nautilus) now has undo support.
   - Several games have been [[http://bobthegnome.blogspot.com/2011/12/gnome-games-modernisation.html|modernized]] with useful help, simplified menus, and a less cluttered interface. 
 
 * [[http://remmina.sourceforge.net/|Remmina]] with FreeRDP is the new standard remote desktop client, replacing [[http://projects.gnome.org/vinagre/|Vinagre]] and rdesktop.

 * The IcedTea Java plugin is no longer installed as part of the ubuntu-restricted-addons package but it is still available for install (Bug:889171)

デスクトップアプリケーション

  • デフォルトの音楽プレイヤーは、Rhythmboxに変更されました。以前と同様、Ubuntu One Music Storeも含まれています。

  • LibreOfficeは3.5.2に更新されました。

  • GNOMEは3.4.1に更新されました。GNOME 3.4のリリースノートを確認し、新機能や改良項目を確認してください。ごく簡単な抜粋は次の通りです。

    • - ファイル操作(Nautilus)が、アンドゥ操作に対応しました。

      - 同梱されるゲームが現代化され、現実的なヘルプや整理されたメニュー、そしてなめらかなインターフェースを実現するようになりました。

  • Remmina+FreeRDPが新しいリモートデスクトップクライアントになりました。Vinagre+rdesktopに変わる新しい選択肢です。

  • IcedTea Javaプラグインは、ubuntu-restricted-addonsパッケージの一部としてはインストールされなくなりました。パッケージとしては残っており、個別にインストールすることは可能です。(889171)

== Software Center ==

 * When installing new software through software-center, corresponding language support packages (translations, spell check modules particulat to that software, help files, etc.) are now installed alongside automatically. This removes the need to open "Language Support" after installing new software.
 * The user can opt-in into personalized recommendations. This will show global, category and per-application recommendations to the user.
 * Payment support for [[https://www.paypal.com|PayPal]].
 * Web Directory to share applications with your friends.
 * Support for multiple screenshots and videos is now available.
 * Startup time and overall responsiveness was improved.
 * Improved support for installing multiple versions via the ubuntu-backports project.

ソフトウェアセンター

  • 新しいソフトウェアをソフトウェアセンターから導入した場合、必要なlanguage supportパッケージ(インターフェースの翻訳やスペルチェック機能・ヘルプファイル等)を自動的に導入するようになりました。もしこれを削除したい場合、ソフトウェアのインストール後に「言語サポート」を開いてください。
  • パーソナライズされた「おすすめ機能」をオプトイン方式で有効にできます。この機能を利用することで、ユーザーはカテゴリーやアプリケーションごとに「おすすめ」情報を入手することができます。
  • 支払いの方法として、PayPalをサポートしました。

  • Web Directorを用いることで、友だちにアプリケーションを勧めることができます。
  • 複数のスクリーンショットや、動画による紹介をサポートするようになりました。
  • 起動時間や全体の動作を高速化しました。
  • ubuntu-backportsプロジェクトから複数のバージョンのソフトウェアを導入するための機能を強化しました。

locked-by: hito
== Ubuntu One ==

 * The all new Control Panel now provides an installer, setup wizard, ability to add/remove folders to sync, and more.
 * Proxy support is now fully functional.
 * Ubuntu One contacts sync in Evolution is not supported any more and has been removed.

##EndPreciseReleaseNotesDesktop

<<Include(PrecisePangolin/ReleaseNotes/CommonInfrastructure, , from="^##StartPreciseReleaseNotesFeatures", to="##EndPreciseReleaseNotesFeatures")>>

= Installation =

== Overview ==

Preparing your computer for Ubuntu is now much simpler, with a wider range of disk setup options. Each of these are detailed at length to provide you with a clear understanding of the actions that will take place with your selection.

You can now reinstall or upgrade an existing copy of Ubuntu with the Desktop CD installer, provided that your computer is connected to the Internet. 

== Download  ==

Ubuntu 12.04 images can be downloaded from a location near you:

  * http://www.ubuntu.com/download

In addition they can also be found at the following locations:

  * http://releases.ubuntu.com/12.04/ (Ubuntu)
  * http://cdimage.ubuntu.com/releases/12.04/ (Ubuntu DVD, preinstalled ARM images, source)
  * http://cdimage.ubuntu.com/netboot/12.04/ (Ubuntu Netboot)

== System Requirements ==

The minimum memory requirement for Ubuntu 12.04 is 384 MB of memory for Ubuntu Desktop.   Note that some of your system's memory may be unavailable due to being used by the graphics card. If your computer has only the minimum amount of memory, the installation process will take longer than normal; however, it will complete successfully, and the system will perform adequately once installed.

Systems with less memory may be able to select "Install Ubuntu" from the boot menu to run just the installer, rather than the whole desktop, or may be able to use the alternate install CD.

Upgrading

Upgrading from Ubuntu 11.10

To upgrade from Ubuntu 11.10 on a desktop system, start "Update Manager". It should display the following message: "New distribution release '12.04' is available. Click Upgrade and follow the on-screen instructions".

Upgrading from Ubuntu 10.04 LTS to Ubuntu 12.04 LTS

To upgrade from 10.04 LTS on a desktop system, upgrade over the network with the following procedure.

  1. Start System/Administration/Software Sources
  2. On the Updates tab, set Show new distribution releases: to Long term support releases only, then press Close.
  3. Press Alt-F2 and type update-manager
    1. Click the Check button to check for new updates. If there are any updates to install, use the Install Updates button to install them, and press Check again after that is complete.
    2. A message will appear informing you of the availability of the new release. Click Upgrade.
    Follow the on-screen instructions.

Upgrading from Other Releases

Users of other Ubuntu releases need to upgrade first to 11.10, and then to 12.04.

For further information on upgrading to 11.10, please see the upgrade instructions.

System requirements

  • While the minimum memory requirement for 32bit is 384 MB, a minimum of 512 MB is needed for the 64bit installation. On systems with only the bare minimum amount of memory, it is also strongly recommended to use the "Install Ubuntu" option as it uses less memory than the full live session.
  • The Ubuntu 12.04 installation image does not include support for old computers that do not support PAE. If your computer is affected, you can either first install Ubuntu 10.04 or 11.10 and upgrade to 12.04 or you can use the Lubuntu or Xubuntu images. The non-PAE version of the Linux kernel will be dropped completely following the 12.04 release.

Known Issues

Boot, Installation and Post-Installation

  • Importing of existing Windows user accounts fails in some cases. (987902)

  • Wubi (the Ubuntu installer for Windows) is not available as an option on the Ubuntu Desktop/DVD any more. Instead, it is now a separate download.
  • A bug in the firmware on certain Samsung laptop models leaves these machines at risk of being rendered inoperable ("bricked") when booted in UEFI mode. Steps have been taken with the kernel in 12.04.2 to mitigate this problem, but only a future firmware update from Samsung will resolve this issue with 100% reliability. It is therefore recommended that users boot their systems in CSM ("compatibility support module") mode to avoid this issue. (1040557)

  • Performing automatic encrypted LVM installation using Kubuntu and Xubuntu 12.04.4 alternate installer images results in a failure to configure encrypted volumes. Please either use manual partitioning to create encrypted volumes with any non-default "IV algorithm" setting or use 12.04.3 media to complete the installation. (1276739)

Upgrades

  • If you have overridden the value of APT::Cache-Limit in /etc/apt/apt.conf or /etc/apt/apt.conf.d, you should remove these settings before upgrading. The release-upgrader-apt used by update-manager for upgrades from lucid to precise no longer has any hard coded limit on the cache size.
  • If you are running a KVM host with libvirt and are upgrading from Ubuntu 10.04 LTS to 12.04 LTS you may find that some existing virtual machines are no longer recognized (virsh list --all). A change to each guest's XML file may be needed, related to how console and serial devices are now configured. (931350)

Kernel

  • On ARM omap images, the networking support for the Beagle XM board is broken (838200)

  • On systems with an ATI Radeon 9200 graphics card the system will boot to a black screen. As a work around edit the kernel command line in the boot loader and add "nomodeset". (725580)

  • Fujitsu Siemens Amilo M 7400 and Maxdata 7000DX wireless RF kill handling triggers a kernel panic preventing wireless from operating correctly. This may be worked around by editing your kernel command line and adding "noexec=off". (979253)

  • Beagle XM systems which are capable of running at 1GHZ will be initialised at 800MHZ leading to slower than optimal performance. (771537)

  • Some EFI systems fail to boot in EFI mode. BIOS mode is advised in these situations. (721576)

Desktop Interface

  • When using the LiveCD in certain languages such as French and choosing "Try Ubuntu" at the prompt, the keyboard will be brought up with the US keyboard map instead of the correct one for the chosen language. To avoid this bug, users can press any key at the very first splash screen and select their language here instead. (985065)

Please install available updates to ensure that the issues below will be fixed on your system.

  • Unity Dash (opened via the "Ubuntu" button in the top of the Launcher, or after pressing the <Super> key) may appear sluggish or slow to respond. This is caused by excessive redrawing of the screen contents in some circumstances. (980924)

  • Unity Launcher. If an application is pinned and then unpinned from the Unity Launcher using right-click->Un/Lock to Launcher repeatedly the application may vanish from the Launcher. It is necessary to log out and login again. This relates to an application monitoring framework called "Bamf" (978401)

  • Window titlebars do not update on ATI graphics hardware with the "fglrx" driver. A solution to this problem will be delivered in an update. (770283)

  • On some NVidia cards, when using the proprietary driver, moving windows and other large screen updates causes some tearing. (600178)

Desktop Applications

  • The mail client Evolution may delete folders and their contents as they are renamed or moved around in IMAP (and IMAP+) accounts. It is recommended to copy folders and contents before attempting to move or rename them. (957341)

Support

  • 5 years (Long Term Support).

PrecisePangolin/ReleaseNotes/ja/UbuntuDesktop (last edited 2012-04-29 03:32:28 by cosmos-door)