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Ubuntu 8.04 Pre Realese

About Ubuntu
You are here: Home » Community » Test Releases » Ubuntu 8.04 Release Candidate
Contents
Introduction to Ubuntu 8.04 Hardy Heron
Download
Upgrading from Ubuntu LTS 6.06 and 7.10
New Features since Ubuntu 7.10
New Core System features
GNOME 2.22
Linux kernel 2.6.24
PolicyKit
PulseAudio
Xorg 7.3
New Software Functions
Firefox 3 Beta 5
Brasero
Transmission
World Clock Applet
Vinagre
Uncomplicated Firewall
Totem
Inkscape
New and Improved Support
ActiveDirectory integration
iSCSI support
Memory Protection
SELinux Support
umenu
Virtualization
Wubi
Installation
LTSP
Caveats
Participate in Ubuntu
Help spread the word about Ubuntu 8.04
More Information
Introduction to Ubuntu 8.04 Hardy Heron
The Ubuntu developers are constantly bringing you the absolute latest and most stable software that the open source and free software communities have to offer. This is their latest result: the Ubuntu 8.04 LTS release candidate, which brings a host of excellent new features.
For Kubuntu and Kubuntu KDE 4 Remix see HardyHeron/RC/Kubuntu
Download
Get it while it's hot. ISOs and torrents are available at:
http://releases.ubuntu.com/releases/8.04 (Ubuntu)
http://releases.ubuntu.com/releases/edubuntu/8.04 (Edubuntu add-on)
http://releases.ubuntu.com/releases/kubuntu/8.04 (Kubuntu)
http://cdimage.ubuntu.com/kubuntu-kde4/releases/8.04/rc (Kubuntu with KDE4)
http://cdimage.ubuntu.com/jeos/releases/8.04/rc (Ubuntu JeOS)
http://cdimage.ubuntu.com/xubuntu/releases/8.04/rc (Xubuntu)
http://cdimage.ubuntu.com/ubuntustudio/releases/8.04/rc (UbuntuStudio)
http://cdimage.ubuntu.com/mythbuntu/releases/8.04/rc (Mythbuntu)
Local mirrors are also available:
Africa
http://bw.releases.ubuntu.com/ (Botswana)
http://ls.releases.ubuntu.com/ (Lesotho)
http://sz.releases.ubuntu.com/ (Swaziland)
http://ubuntu.mirror.ac.za/ubuntu-release/ (South Africa)
http://zw.releases.ubuntu.com/ (Zimbabwe)
Asia
http://ftp.tcc.edu.tw/iso/Ubuntu/ (Taiwan)
http://ftp.twaren.net/Linux/Ubuntu/ubuntu-cd/ (Taiwan)
http://mirror.nttu.edu.tw/ubuntu-releases/ (Taiwan)
http://mirror.yandex.ru/ubuntu-releases/ (Russian Federation)
http://tw.releases.ubuntu.com/ (Taiwan)
http://releases.ubuntu.uz/ (Uzbekistan)
Europe
http://se.releases.ubuntu.com/ (Sweden)
http://ubuntu.linux-bg.org/releases/ (Bulgaria)
http://es.releases.ubuntu.com/ (Spain)
http://ie.releases.ubuntu.com/ (Ireland)
http://ftp.snt.utwente.nl/pub/linux/ubuntu-releases/ (Netherlands)
http://nl.releases.ubuntu.com/releases/ (Netherlands)
North America
http://mirror.anl.gov/pub/ubuntu-iso/CDs/ (United States)
http://linux.nssl.noaa.gov/releases/ (United States)
http://mirror.csclub.uwaterloo.ca/ubuntu-releases/ (Canada)
http://mirrors.cat.pdx.edu/ubuntu-releases/ (United States)
http://mirrors.ccs.neu.edu/releases.ubuntu.com/ (United States)
http://mirrors.easynews.com/linux/ubuntu-releases/ (United States)
Oceania/Australia
http://mirror.aarnet.edu.au/pub/ubuntu/releases/ (Australia)
http://nz2.releases.ubuntu.com/ (New Zealand)
http://ubuntu-releases.optus.net/ (Australia)
http://mirror.internode.on.net/pub/ubuntu/releases/ (Australia)
http://planetmirror.com/pub/ubuntu/releases/ (Australia)
South America
http://ubuntu.c3sl.ufpr.br/releases/ (Brazil)
http://cl.releases.ubuntu.com/ (Chile)
Upgrading from Ubuntu LTS 6.06 and 7.10
If you are upgrading from Ubuntu 7.10, see this page
If you are upgrading from Ubuntu LTS 6.06, see this page for the desktop upgrade, and this one for the server upgrade.
New Features since Ubuntu 7.10
New Core System features
GNOME 2.22
The Ubuntu 8.04 release candidate brings you the latest and greatest GNOME 2.22.1 with lots of new features and improvements, such as a new version of the Nautilus file manager that uses the faster and more reliable GVFS backend and shows a list of possible actions upon insertion of removable media, an international clock applet that can show time and weather information for multiple locations around the world, the new Seahorse keyring manager, and Google Calendar support in Evolution.

Linux kernel 2.6.24
The release candidate includes the 2.6.24-16.30 kernel based on 2.6.24.3. This brings in significant enhancements and fixes that have been merged in the last few months into the mainline kernel, including:
dynticks support for amd64, bringing the same power savings already available on 32-bit systems to 64-bit laptops and desktops
the "Completely Fair Scheduler", a new process scheduler introduced in Linux 2.6.23 that provides improved interactive performance.
PolicyKit
PolicyKit allows fine-grained control over user permissions and enhances usability and security, by allowing administrative applications to be run as a normal user and gain extra privileges dynamically only for privileged operations instead of requiring the whole application to run as root.
Ubuntu 8.04 features PolicyKit integration with the "Network", "Users and Groups", "Services" and "Time and Date" tools in the System/ Administration menu and the panel clock applet for authorization, as well as gnome-mount and HAL for fine-grained access control for devices and power management. All the privileges can be configured using the System / Administration / Authorizations interface, which itself uses PolicyKit for authorizing the changes.

PulseAudio
The release candidate comes preinstalled with the PulseAudio sound server, which makes it possible to mix audio from multiple applications together, assign audio from individual applications to specific sound cards, adjust volume levels of each individual application, and perform advanced operations on audio streams such as transferring the audio to another computer or changing sample formats and channel counts.
Xorg 7.3
The latest version of the X window system, Xorg 7.3, is used in the release candidate, with an emphasis on better autoconfiguration with a minimal configuration file.
This release brings a new Screen Resolution utility that allows users to dynamically configure the resolution, refresh rate, and rotation of a second monitor. This will be particularly handy for laptop users that connect to a projector or external monitor.

New Software Functions
Firefox 3 Beta 5
Firefox 3 Beta 5 is the default browser, bringing much better system integration including GTK form buttons in web pages, a native GTK print dialog, file chooser dialogs with image previews, and icon theming that matches the desktop environment.

Brasero
The Brasero CD/DVD burning application, which complements the CD/DVD burning functions of Nautilus and replaces the Serpentine audio CD burning utility, is installed by default in the release candidate.

Transmission
The GTK version of the popular Transmission BitTorrent client comes preinstalled in the Ubuntu 8.04 release candidate, replacing the Gnome BitTorrent downloader.

World Clock Applet
Integrating the features of the intlclock applet, the GNOME panel clock in the release candidate can display the time and weather in multiple locations.

Vinagre
The new Vinagre remote desktop (VNC) client is installed by default, replacing xvnc4viewer.

Vinagre allows the user to view multiple machines simultaneously, can automatically discover servers on the network without needing manual configuration (via Avahi), and can keep track of recently used and favorite connections.
Uncomplicated Firewall
The Ubuntu 8.04 release candidate includes ufw (Uncomplicated Firewall), a new host-based firewall application configurable from the command line which is designed to make administering a firewall easier for end users while not getting in the way of network administrators.
Totem
The Totem movie player now has a YouTube plugin that makes it possible to search for and play YouTube videos directly, a local search plugin for searching for video files via Tracker, and DVB support that lets you watch digital TV broadcasts.
Inkscape
Inkscape 0.46, which is available in the Universe repository, is a major update that introduces native PDF support, providing an easy, open source solution to editing text and graphics in PDF documents. Users will appreciate being able to draw up flyers, posters, and other documents, save them as PDF (or as the native .svg) in inkscape, and send them to a print shop for printing without ever leaving Ubuntu or loading a proprietary tool.
New and Improved Support
ActiveDirectory integration
Likewise Open, available from the Universe repository, enables seamless integration of Ubuntu within an Active Directory network. Users can use their AD credentials to log onto Ubuntu machines and access any kerberized services provided by an Ubuntu server.
iSCSI support
iSCSI Initiator has been fully integrated in the kernel, allowing Ubuntu to mount iSCSI targets as a block device. iSCSI is available in the Ubuntu Server installer if iscsi=true is passed on the kernel command line at the beginning of the installation process.
Memory Protection
Additional access checks have been added so that /dev/mem and /dev/kmem can only be used to access device memory. These changes will help defend against rootkits and other malicious code.
The lower 64K of system memory is no longer addressable by default. This will help defend against malicious code that attempts to leverage kernel bugs into security vulnerabilities.
Applications compiled as Position Independent Executables (PIE) are now placed into memory in unpredictable locations, making it harder for security vulnerabilities to be exploited.
SELinux Support
In addition to supporting AppArmor, Ubuntu 8.04 LTS includes support for SELinux in the Universe repository. System security can be enhanced using SELinux, a kernel feature allowing fine-grained mandatory access control. SELinux, including security policies for most system processes, can be installed via the "selinux" package.
umenu
WinFOSS and the Windows open source software have been replaced by umenu, a simple launcher that lets the user install Ubuntu from Windows using Wubi, install Ubuntu to a partition without having to make their CD-ROM the first boot device, and find out more about Ubuntu at the www.ubuntu.com website.

Virtualization
KVM is now a fully maintained option for virtualization, and libvirt and virt-manager have also been integrated in Ubuntu, allowing for easy guest creation and basic management of virtual machines out of the box. Virt-manager can be used to administer guests on a remote server.
The kernel also includes virtio, greatly improving I/O performance in guests.
Wubi
There is a new installation option for Windows users. Wubi allows users to install and uninstall Ubuntu like any other Windows application. It does not require a dedicated partition, nor does it affect the existing bootloader, yet users can experience a dual-boot setup almost identical to a full installation. Wubi works with a physical CD or in stand-alone mode, by downloading an appropriate ISO to install from. It can be found on the root of the CD as Wubi.exe. A full installation within a dedicated partition is still recommended, but Wubi is a great way to try Ubuntu for a few days and weeks before committing dedicated disk resources.

Installation
File systems are now mounted with the relatime mount option by default, for improved performance. More information about this feature is available at kerneltrap.org.
LTSP
The alternate CD now provides a quick option to install an LTSP terminal server. You can read more about this feature at https://help.ubuntu.com/community/UbuntuLTSP/LTSPQuickInstall.
Caveats
There are several known bugs that users may run into with Ubuntu 8.04 RC. We have documented them here for your convenience along with any known workarounds.
Translations haven't been updated for Firefox 3 in Ubuntu 8.04 yet. 195013
Installation will fail when more than one swap partition previously existed. As a workaround, before starting the installer run sudo swapoff -a; sudo hdparm -z /dev/sda, where /dev/sda is the installation target. 218394
Choosing a non-Latin keymap at the boot menu will result in a broken keymap in the alternate or server installer. As a workaround, don't make any changes to the keymap at the boot screen. 218754
Installing on community-supported ("ports") architectures is not currently possible with the desktop CDs because of a problem with mirror selection. A fix for this is expected to be included in the final release. 218801
If you want to help with bugs, the Bug Squad is always looking for help.
If you plan to do an installation of the release candidate, be sure to head to the Testing page. With just a few minutes of your time, you can really help to improve Ubuntu. We have two different tests; one takes just a short time, and the other is more thorough.
Participate in Ubuntu
If you would like to help shape Ubuntu, take a look at the list of ways you can participate at
http://www.ubuntu.com/community/participate/
Help spread the word about Ubuntu 8.04
A new banner is available that counts down the days until the Ubuntu 8.04 release:
http://www.ubuntu.com/getubuntu/countdown
You can add the countdown banner to your website to help build excitement for the new release as the date approaches.
More Information
You can find out more about Ubuntu on our website and wiki.
To sign up for future Ubuntu development announcements, please subscribe to Ubuntu's development announcement list at:
http://lists.ubuntu.com/mailman/listinfo/ubuntu-devel-announce

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