TechnicalOverview

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Beta1 release notes can be found: https://wiki.ubuntu.com/PrecisePangolin/TechnicalOverview/Beta1 ## When adding features to this page, please add credits for the relevant upstream developers where appropriate.
||<tablestyle="float:right; width:40%; background:#F1F1ED; margin: 0 0 1em 1em;" style="padding:0.5em;">'''Table of Contents'''<<BR>> <<TableOfContents>>||

= DRAFT - gather spot for Beta 2 input =

= Introduction =

The Ubuntu developers are moving quickly to bring you the absolute latest and greatest software the Open Source community has to offer. The Precise Pangolin Beta 2 release of Ubuntu 12.04 gives a preview of the next LTS version of Ubuntu.

= Get Ubuntu 12.04 =

== Upgrading from Ubuntu 11.10 ==

To upgrade from Ubuntu 11.10 on a desktop system, press Alt+F2 and type in "update-manager -d" (without the quotes) into the command box. Update Manager should open up and tell you: New distribution release '12.04' is available. Click Upgrade and follow the on-screen instructions.

To upgrade from Ubuntu 11.10 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 -d}}}; and follow the on-screen instructions. Note that the server upgrade is now more robust and will utilize GNU screen and automatically re-attach in case of e.g. dropped connection problems.

== Upgrading from Ubuntu 10.04 ==

There are some known issues at this time, so only developers and testers should try doing this upgrade at the moment.

== Download the Beta 2 ==

Beta 1 images can be downloaded from a location near you:

  * http://www.ubuntu.com/testing/download (Ubuntu and Ubuntu Server) .

In addition they can be found at the following links:

  * http://releases.ubuntu.com/precise/ (Ubuntu, Ubuntu Server)
  * http://cloud-images.ubuntu.com/releases/precise/beta-2/ (Ubuntu Cloud Images)
  * http://cdimage.ubuntu.com/releases/precise/beta-2/ (Ubuntu DVD, preinstalled ARM images, source)
  * http://cdimage.ubuntu.com/ubuntu-core/releases/12.04/beta-2/ (Ubuntu Core)
  * http://cdimage.ubuntu.com/netboot/12.04/ (Ubuntu Netboot)
  * http://cdimage.ubuntu.com/kubuntu/releases/precise/beta-2/ (Kubuntu)
  * http://cdimage.ubuntu.com/xubuntu/releases/precise/beta-2/ (Xubuntu)
  * http://cdimage.ubuntu.com/edubuntu/releases/precise/beta-2/ (Edubuntu)
  * http://cdimage.ubuntu.com/ubuntustudio/releases/precise/beta-2/ (Ubuntu Studio)
  * http://cdimage.ubuntu.com/lubuntu/releases/precise/beta-2/ (Lubuntu)


= New features in Precise =

Please see the [[https://blueprints.launchpad.net/ubuntu/precise/+specs|Precise blueprint list]] for details.

Please test and report any bugs you find:

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


== Ubuntu Kernel ==

Beta-2 includes the [[https://launchpad.net/ubuntu/+source/linux/3.2.0-20.32|3.2.0-20.32]] Ubuntu kernel which is based on the v3.2.12 [[http://www.kernel.org|upstream stable kernel]]. This is an update from the [[https://launchpad.net/ubuntu/+source/linux/3.2.0-17.27|3.2.0-17.27]] kernel which shipped in Beta 1 (based on upstream stable v3.2.6 ). AUFS also remains disabled in the Beta-2 kernel. Anyone needing AUFS is encouraged to migrate to overlayfs.

Beginning with the Beta-2 kernel, we have....


== Ubuntu Desktop ==

=== New Applications and Defaults ===

 *

=== Interface updates ===

 *

=== Ubuntu One ===

 * Proxy support is fully functional.

=== Other ===

 *

== Ubuntu Core ==

 * This flavor provides a minimal Ubuntu environment suitable for highly customised installs, and mainly just saw the general version upgrades for the contained packages.

 * In sync with the rest of the [[https://wiki.ubuntu.com/ARM|Ubuntu ARM]] images, builds for the ARMv7 hard float (armhf) architecture are now available. This is the supported architecture for all ARM Ubuntu images now.

== Ubuntu Server ==

 *

== Ubuntu Server and Cloud Workloads ==

 *

== Kubuntu ==

 * The Kubuntu team is proud to "Kubuntu Active" as a tech preview of Kubuntu for table devices. It uses KDE's Plasma Active Interface.

See more details at the Kubuntu Beta 2 page https://wiki.kubuntu.org/PrecisePangolin/Beta2/Kubuntu

== Xubuntu ==

 * Some default shortcuts have been changed and some added, see https://wiki.ubuntu.com/Xubuntu/Roadmap/Specifications/Precise/DefaultShortcutKeys#Detailed_specification for the complete list
 * New wallpaper and other tweaks and improvements to the looks of Xubuntu are in, including lots of GTK3 fixes for the Greybird theme.

For more information and download links for stable release of Xubuntu, go to http://xubuntu.org/

== Edubuntu ==

 *

To learn more on Edubuntu and download a stable version of it, go to: http://www.edubuntu.org

== Mythbuntu ==

A pre-release [[http://www.mythtv.org/|MythTV]] 0.25 snapshot is now in Precise. The final release of MythTV 0.25 will be uploaded to Precise when it's complete.
  * NOTE: Any MythTV 0.24 versions on your network are incompatible with MythTV 0.25. If you want to test Precise, you will need to upgrade your other machines to MythTV 0.25 as well. See http://mythbuntu.org/auto-builds for information about upgrading earlier Ubuntu releases to 0.25.
  * There have been some upgrade problems found with packages that have changed (mythvideo, libmyth-0.25-0). These are now fixed.
  * There were some logging problems with new rsyslog support. These are now fixed.
  * For more information about what has changed in MythTV 0.25 please see: http://www.mythtv.org/wiki/Release_Notes_-_0.25

== Lubuntu ==

 * Lubuntu artwork has been updated.

== Ubuntu Studio ==

 * lowlatency kernel?


= Known issues =

== Boot, installation and post-install ==

 * There is no network support on some Beagle board versions. (Bug:838200)
 * On AC100 ARM images no keyboard selection is offered, a manual workaround is shown in the bug (Bug:925482)
 * On OMAP4 Pandaboard images a camera is detected falsely resulting in the installer trying to take a picture while this is not possible (Bug:924419)
 * On PowerPC, when installed alongside linux, the system does not automatically boot into the newly installed system. The workaround is to hold down option key to get a boot menu and proceed from there.

== Upgrades ==

 * The `ia32-libs` package that used to provide 32-bit libraries on 64-bit (`amd64`) installations has been removed in favour of multiarch. Systems using `ia32-libs` must migrate to multiarch in order to upgrade to 12.04. In most cases, this should be set up automatically by the upgrade process. Some users who upgraded through previous development releases may have removed `/etc/dpkg/dpkg.cfg.d/multiarch`, and must restore it with the contents `foreign-architecture i386` in order to have 32-bit library support in 12.04.
 * In some cases, the package manager in Ubuntu 11.10 may not be able to decide on a correct unpack ordering when upgrading 64-bit systems with the `ia32-libs` package installed; if this is the case, it will fail before starting to unpack any new packages with a message something like "Couldn't configure pre-depend libtinfo5 for libncurses5, probably a dependency cycle". A workaround is to install the `apt` and `libapt-pkg4.12` packages from precise before starting the upgrade. (Bug:924079)
 * Landscape is currently incompatible with multiarch. We hope that this will be fixed in time for 12.04; but if you are using Landscape then you will need to either remain with 11.10 or remove any 32-bit libraries.
 * Aptitude does not work on 64 bit systems without disabling multiarch in /etc/dpkg/dpkg.cfg.d/multiarch . (Bug:831768)

## == Default keybindings ==


## == Migration ==

== Graphics and Display ==
 
 * Remote Desktop does not work with the -fglrx video driver, nor with the legacy nvidia drivers. You can establish a connection but the remote screen does not update. As a workaround use Unity2d, or switch to the free drivers or nvidia-current. (Bug:772873, Bug:918815)
 * Maximized windows can be accidentally closed from wrong monitor.(Bug:865701)
 * For languages that are read right to left (arabic, hebrew), there is some inconsistency in display between the login screen (lightDM) and the desktop environment (unity). (Bug:871764, Bug:834386)

== Desktop ==

 * There are known audio issues on the OMAP and OMAP4 images (Bug:925094)

== Kernel ==
 * For any issues seen as a result of RC6 enablement, please refer to [[https://wiki.ubuntu.com/Kernel/PowerManagementRC6|PowerManagementRC6]]
 * Software RAID fails to rebuild after testing degraded cold boot (Bug:925280)

== Ubuntu Server ==
 * Squid Proxy update from 2.7 to 3.19 fails as config file has moved, and features in 2.7 not available in 3.x (Bug:924739)
 * !OpenStack: DB migration failing when upgrading glance - trying to create existing tables (Bug:883988)
 * !OpenStack: Nova API does not listen on IPv6 (Bug:850443)

== Ubuntu Cloud ==
 * fsck / dirty filesystem on instance is death (Bug:928990).

== Ubuntu Core ==

 * DRM libraries are always installed, even for users who are not enabling graphical environments (Bug:819802)

== Kubuntu ==

 * There are audio issues on the OMAP and OMAP4 images (Bug:925094)
   
== Edubuntu ==

 * As Edubuntu includes a standard Ubuntu desktop, most of the issues above also apply to Edubuntu.


== Xubuntu ==

 * When using the new plymouth splash screen, occasionally using the desktop cd to install, the message "hit any key to continue" does not appear. Should you get a black screen with text and the sliding throbber, when the throbber stops moving and the cd ejects, remove the cd and hit enter on the keyboard to continue.(Bug:872472)
 * For the desktop images installing from the CD menu is failing, however, allowing the CD to spin until it stops at "try Xubuntu" fixes this and "Install Xubuntu" works again.
 * For some live sessions, the network-manager indicator might be hidden. Running nm-connection-manager allows you to access the network management interface.

== Lubuntu ==


 * The [[https://wiki.ubuntu.com/Lubuntu/Artwork/Incoming/Precise/Ozone|new artwork]] is still in progress for the gtk3 part. (Bug:943682)
 * Some installer windows are too big for a netbook screen (Bug:744834)
 * Ubiquity requires more than 4 Gb of free space to install, please use alternate ISO if you are in this case (Bug:775124)
 * In persistent mode, items created on the desktop are not displayed until next reboot. (Bug:837470)

== Ubuntu Studio ==

 * lightdm greeter is not modified from stock, which is fairly unattractive while entirely functional
 * applications menu icon has incongruous background colour WRT panel
 * package flashplugin-downloader 11.0.1.152ubuntu1 failed to install/upgrade. (Bug:870643)
 * live user does not have access to rt privileges
 * installed user does not have access to rt privileges by default (jackd is not configured properly)
 * lightdm does not configure correctly preventing x from starting (Bug:922424)
 * menu is not optimally organized

== Mythbuntu ==

 * Upgrades will currently pull in the entire gnome stack (Bug:936761). You can safely remove unity and the rest of gnome if you decide to upgrade.
 * Mythbuntu has been affected by GTK's unico theme interface change, and images are not usable at this time. Please check the [[http://iso.qa.ubuntu.com/qatracker/milestones/204/builds|daily Mythbuntu images]] for a usable Mythbuntu image as soon as this bug is resolved. (Bug:943682).



'''For a listing of more known issues, please refer to the Precise Pangolin [[https://bugs.launchpad.net/ubuntu/precise/+bugs|bug tracker]] in Launchpad.'''

= Reporting bugs =

It should come as no surprise that this Beta 1 release of Precise Pangolin contains other bugs. Your comments, bug reports, patches and suggestions will help fix bugs and improve the quality of future releases. Please [[http://help.ubuntu.com/community/ReportingBugs|report bugs using the tools provided]].

If you want to help out with bugs, the [[http://wiki.ubuntu.com/BugSquad|Bug Squad]] is always looking for help.


= Participate in Improving Ubuntu =

== Participate in Checking if "Fixed Bugs" are Fixed ==

Updated images with bug fixes are being made available daily now, and the latest can always be found on the [[http://iso.qa.ubuntu.com/qatracker/milestones/204/builds|ISO tracker]]. If you end up doing an install with one of these daily images please let us know what you find out (we want to know if a fix works, as well if there's still a problem).

== Checking the Desktop Default Applications ==

The QA team has made available a ppa containing a preliminary set of manual application tests covering the default ubuntu desktop applications. You are encouraged to participate in testing your installation after installing Beta 1 by [[http://testcases.qa.ubuntu.com/RunningCheckboxTestCases|running these tests and reporting your results with checkbox]].

In addition, contributions for testcases are very welcome. The current tests cases can be improved and more applications can be added. To help, see the directions for [[http://testcases.qa.ubuntu.com/CheckboxTestCases|contributing manual application testcases for checkbox]].

== Other ways to help ... ==

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/

= More information =

You can find out more about Ubuntu on the [[http://www.ubuntu.com|Ubuntu website]] and [[http://wiki.ubuntu.com|Ubuntu 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

DRAFT - gather spot for Beta 2 input

Introduction

The Ubuntu developers are moving quickly to bring you the absolute latest and greatest software the Open Source community has to offer. The Precise Pangolin Beta 2 release of Ubuntu 12.04 gives a preview of the next LTS version of Ubuntu.

Get Ubuntu 12.04

Upgrading from Ubuntu 11.10

To upgrade from Ubuntu 11.10 on a desktop system, press Alt+F2 and type in "update-manager -d" (without the quotes) into the command box. Update Manager should open up and tell you: New distribution release '12.04' is available. Click Upgrade and follow the on-screen instructions.

To upgrade from Ubuntu 11.10 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 -d; and follow the on-screen instructions. Note that the server upgrade is now more robust and will utilize GNU screen and automatically re-attach in case of e.g. dropped connection problems.

Upgrading from Ubuntu 10.04

There are some known issues at this time, so only developers and testers should try doing this upgrade at the moment.

Download the Beta 2

Beta 1 images can be downloaded from a location near you:

In addition they can be found at the following links:

New features in Precise

Please see the Precise blueprint list for details.

Please test and report any bugs you find:

Ubuntu Kernel

Beta-2 includes the 3.2.0-20.32 Ubuntu kernel which is based on the v3.2.12 upstream stable kernel. This is an update from the 3.2.0-17.27 kernel which shipped in Beta 1 (based on upstream stable v3.2.6 ). AUFS also remains disabled in the Beta-2 kernel. Anyone needing AUFS is encouraged to migrate to overlayfs.

Beginning with the Beta-2 kernel, we have....

Ubuntu Desktop

New Applications and Defaults

Interface updates

Ubuntu One

  • Proxy support is fully functional.

Other

Ubuntu Core

  • This flavor provides a minimal Ubuntu environment suitable for highly customised installs, and mainly just saw the general version upgrades for the contained packages.
  • In sync with the rest of the Ubuntu ARM images, builds for the ARMv7 hard float (armhf) architecture are now available. This is the supported architecture for all ARM Ubuntu images now.

Ubuntu Server

Ubuntu Server and Cloud Workloads

Kubuntu

  • The Kubuntu team is proud to "Kubuntu Active" as a tech preview of Kubuntu for table devices. It uses KDE's Plasma Active Interface.

See more details at the Kubuntu Beta 2 page https://wiki.kubuntu.org/PrecisePangolin/Beta2/Kubuntu

Xubuntu

For more information and download links for stable release of Xubuntu, go to http://xubuntu.org/

Edubuntu

To learn more on Edubuntu and download a stable version of it, go to: http://www.edubuntu.org

Mythbuntu

A pre-release MythTV 0.25 snapshot is now in Precise. The final release of MythTV 0.25 will be uploaded to Precise when it's complete.

  • NOTE: Any MythTV 0.24 versions on your network are incompatible with MythTV 0.25. If you want to test Precise, you will need to upgrade your other machines to MythTV 0.25 as well. See http://mythbuntu.org/auto-builds for information about upgrading earlier Ubuntu releases to 0.25.

  • There have been some upgrade problems found with packages that have changed (mythvideo, libmyth-0.25-0). These are now fixed.
  • There were some logging problems with new rsyslog support. These are now fixed.
  • For more information about what has changed in MythTV 0.25 please see: http://www.mythtv.org/wiki/Release_Notes_-_0.25

Lubuntu

  • Lubuntu artwork has been updated.

Ubuntu Studio

  • lowlatency kernel?

Known issues

Boot, installation and post-install

  • There is no network support on some Beagle board versions. (838200)

  • On AC100 ARM images no keyboard selection is offered, a manual workaround is shown in the bug (925482)

  • On OMAP4 Pandaboard images a camera is detected falsely resulting in the installer trying to take a picture while this is not possible (924419)

  • On PowerPC, when installed alongside linux, the system does not automatically boot into the newly installed system. The workaround is to hold down option key to get a boot menu and proceed from there.

Upgrades

  • The ia32-libs package that used to provide 32-bit libraries on 64-bit (amd64) installations has been removed in favour of multiarch. Systems using ia32-libs must migrate to multiarch in order to upgrade to 12.04. In most cases, this should be set up automatically by the upgrade process. Some users who upgraded through previous development releases may have removed /etc/dpkg/dpkg.cfg.d/multiarch, and must restore it with the contents foreign-architecture i386 in order to have 32-bit library support in 12.04.

  • In some cases, the package manager in Ubuntu 11.10 may not be able to decide on a correct unpack ordering when upgrading 64-bit systems with the ia32-libs package installed; if this is the case, it will fail before starting to unpack any new packages with a message something like "Couldn't configure pre-depend libtinfo5 for libncurses5, probably a dependency cycle". A workaround is to install the apt and libapt-pkg4.12 packages from precise before starting the upgrade. (924079)

  • Landscape is currently incompatible with multiarch. We hope that this will be fixed in time for 12.04; but if you are using Landscape then you will need to either remain with 11.10 or remove any 32-bit libraries.
  • Aptitude does not work on 64 bit systems without disabling multiarch in /etc/dpkg/dpkg.cfg.d/multiarch . (831768)

Graphics and Display

  • Remote Desktop does not work with the -fglrx video driver, nor with the legacy nvidia drivers. You can establish a connection but the remote screen does not update. As a workaround use Unity2d, or switch to the free drivers or nvidia-current. (772873, 918815)

  • Maximized windows can be accidentally closed from wrong monitor.(865701)

  • For languages that are read right to left (arabic, hebrew), there is some inconsistency in display between the login screen (lightDM) and the desktop environment (unity). (871764, 834386)

Desktop

  • There are known audio issues on the OMAP and OMAP4 images (925094)

Kernel

  • For any issues seen as a result of RC6 enablement, please refer to PowerManagementRC6

  • Software RAID fails to rebuild after testing degraded cold boot (925280)

Ubuntu Server

  • Squid Proxy update from 2.7 to 3.19 fails as config file has moved, and features in 2.7 not available in 3.x (924739)

  • OpenStack: DB migration failing when upgrading glance - trying to create existing tables (883988)

  • OpenStack: Nova API does not listen on IPv6 (850443)

Ubuntu Cloud

  • fsck / dirty filesystem on instance is death (928990).

Ubuntu Core

  • DRM libraries are always installed, even for users who are not enabling graphical environments (819802)

Kubuntu

  • There are audio issues on the OMAP and OMAP4 images (925094)

Edubuntu

  • As Edubuntu includes a standard Ubuntu desktop, most of the issues above also apply to Edubuntu.

Xubuntu

  • When using the new plymouth splash screen, occasionally using the desktop cd to install, the message "hit any key to continue" does not appear. Should you get a black screen with text and the sliding throbber, when the throbber stops moving and the cd ejects, remove the cd and hit enter on the keyboard to continue.(872472)

  • For the desktop images installing from the CD menu is failing, however, allowing the CD to spin until it stops at "try Xubuntu" fixes this and "Install Xubuntu" works again.
  • For some live sessions, the network-manager indicator might be hidden. Running nm-connection-manager allows you to access the network management interface.

Lubuntu

  • The new artwork is still in progress for the gtk3 part. (943682)

  • Some installer windows are too big for a netbook screen (744834)

  • Ubiquity requires more than 4 Gb of free space to install, please use alternate ISO if you are in this case (775124)

  • In persistent mode, items created on the desktop are not displayed until next reboot. (837470)

Ubuntu Studio

  • lightdm greeter is not modified from stock, which is fairly unattractive while entirely functional
  • applications menu icon has incongruous background colour WRT panel
  • package flashplugin-downloader 11.0.1.152ubuntu1 failed to install/upgrade. (870643)

  • live user does not have access to rt privileges
  • installed user does not have access to rt privileges by default (jackd is not configured properly)
  • lightdm does not configure correctly preventing x from starting (922424)

  • menu is not optimally organized

Mythbuntu

  • Upgrades will currently pull in the entire gnome stack (936761). You can safely remove unity and the rest of gnome if you decide to upgrade.

  • Mythbuntu has been affected by GTK's unico theme interface change, and images are not usable at this time. Please check the daily Mythbuntu images for a usable Mythbuntu image as soon as this bug is resolved. (943682).

For a listing of more known issues, please refer to the Precise Pangolin bug tracker in Launchpad.

Reporting bugs

It should come as no surprise that this Beta 1 release of Precise Pangolin contains other bugs. Your comments, bug reports, patches and suggestions will help fix bugs and improve the quality of future releases. Please report bugs using the tools provided.

If you want to help out with bugs, the Bug Squad is always looking for help.

Participate in Improving Ubuntu

Participate in Checking if "Fixed Bugs" are Fixed

Updated images with bug fixes are being made available daily now, and the latest can always be found on the ISO tracker. If you end up doing an install with one of these daily images please let us know what you find out (we want to know if a fix works, as well if there's still a problem).

Checking the Desktop Default Applications

The QA team has made available a ppa containing a preliminary set of manual application tests covering the default ubuntu desktop applications. You are encouraged to participate in testing your installation after installing Beta 1 by running these tests and reporting your results with checkbox.

In addition, contributions for testcases are very welcome. The current tests cases can be improved and more applications can be added. To help, see the directions for contributing manual application testcases for checkbox.

Other ways to help ...

If you would like to help shape Ubuntu, take a look at the list of ways you can participate at

More information

You can find out more about Ubuntu on the Ubuntu website and Ubuntu wiki.

To sign up for future Ubuntu development announcements, please subscribe to Ubuntu's development announcement list at:

PrecisePangolin/TechnicalOverview (last edited 2012-03-29 18:21:29 by 99-191-111-134)