Ubuntu is distributed on two types of images described below. Desktop image The desktop image allows you to try Ubuntu without changing your computer at all, and at your option to install it permanently later. This type of image is what most people will want to use. If you have a nonbit processor made by AMD, or if you need full support for bit code, use the i images instead.
Choose this if you are at all unsure. For almost all PCs. Also, while not product quality yet, this image is a big step forward feature-wise compared to our initial release done in October , so we hope you will enjoy using this on your phone and tablet. For this milestone we added tablets to the mix of devices we offer builds for. The set of devices with builds available is:. Unfortunately, we had to drop support for some platforms that previously had maintained builds to allow our engineering team to stay focussed on a small set of mobile hardware that are close to what we will have to support when going to market later this year.
The following devices we stopped producing builds for:. Our You can also proceed with a system update on the officially-supported devices running the latest stable image. This version features the tablet form-factor with the introduction of the side-stage when the screen size gives enough room to display it. You are able to set a phone-factor application into that side-stage and switch between the main and side stages.
Multiple core applications as well have been extended to support and be responsive for various form factors and screen sizes in addition to getting a ton of new features and bug fixes. The home screen and scope experience has seen a complete overhaul, delivering an even better and more stunning experience than before. Users can now enable and disable scopes to get more control about what is searched and delivering more accurate answers and will surely see the attention to detail that our design and engineering team has put into bringing these main UI experiences to where we are now.
Give it a try! The Web applications story just got boosted through integration of the oxide engine, a new web container featuring the V8 javascript engine and chromium rendering. With this we are now delivering an even faster web experience than before. Note that our browser is also using the same technology for a reliable and relaxing daily browsing experience.
On top of the usual freshness of the core stack that comes with an Ubuntu release, we upgraded our UI toolkit to Qt 5. On the developer side, a new layout framework and new facilities like tabulation title enhancement inherited by the new SDK release are available in our Also, developers can now use an emulator on their Ubuntu Desktop to do app and core system development.
On top of the highlighted items above, there are many user noticeable improvements. Here is a short list:. Of course, this is just the tip of the iceberg. Just go ahead and experience it yourself. We are looking forward to your feedback and bugs! Here a list of issues we would like to point out for users that want to try installing or upgrading from Ubuntu System upgrade dialog displays However, you will be as expected on a After upgrading your Music and events like alarms won't be triggered if the device is sleeping for too long New scopes cause some slowdown in UI responsiveness; while we fixed a good part of it in days before release, there is still a noticeable performance impact Clock app crashes when trying to access a saved alarm Learn more and get involved:.
Got questions? As is to be expected, at this stage of the release process, there are some significant known bugs that users may run into with this release of Ubuntu The ones we know about at this point and some of the workarounds , are documented here so you don't need to spend time reporting these bugs again:.
Automatic install is broken on drives that contain partitions that either do not have an operating system installed eg. Selecting automatic install or upgrade on these systems will result in the whole drive being wiped and all existing data will be lost.
There are also problems dealing with systems with multiple drives. This bug is present in released media of If you have a drive with any pre-existing partitions, or multiple drives, then you should use manual partitioning.
Ensure you have backups. The desktop image installer cannot unlock existing encrypted LUKS volumes. If you need to make use of existing encrypted volumes during partitioning, then use the "Try Ubuntu without installing" boot option to start a live session, open the encrypted volumes for example, by clicking on their icons in the Unity launcher , enter your password when prompted to unlock them, close them again, and run ubiquity to start the installer.
When using installer to upgrade or reinstall an existing installation with encrypted swap, the installer may fail to reuse the partition. A warning will be shown, however the installation can be completed. The installed system will not have swap activated and users are advised to recreate swap on their systems.
Installs on very small memory systems may fail to start or exit without completing with no error. It is recommended that swap be created before install for such systems. In rare circumstances the 'Next' button on the installer 'Install Type' screen is non-functional.
This is intermittent and may be resolved by hitting 'Back' and retrying. On some systems, after installation, pressing 'Enter' doesn't reboot the system and a hard reset is required Live session starts with keyboard set to English US and time zone as UTC even if non-english languages are selected Automatic upgrade on drives containing user data partitions, including from other operating systems, and all Windows 8 systems, will result in the whole drive being wiped and all existing data will be lost.
When the system is upgraded from a previous release via the installer, the user has to re-enter their credentials. If the user's home directory is encrypted and the password differs from the password on the pre-upgrade system, the upgrade succeeds but the user cannot login Configuration of the package tex-common fails when Configuration of flightgear fails during upgrade from On rare occasions Unity's Dash doesn't display nor search for any applications In order to improve compatibility with other local nameserver packages, Network Manager now assigns IP address The major tools in apparmor-utils AppArmor 2.
While this allows us to better support them and add fixes going forward, currently the aa-genprof and aa-logprof CLI tools contain several bugs , that affect their utility. These bugs should be fixed before release or in an SRU. It is recommended that people develop policy manually at this time. Update : these and other bugs with the python tools have been fixed and the new tools are expected to work better than tools in previous releases.
The reason for this is that some graphics cards like the Intel GSE cannot support accelerated 3D graphics when the combined width of both screens exceeds a certain threshold typically pixels. See the bug for appropriate workarounds. Desktop image The desktop image allows you to try Ubuntu without changing your computer at all, and at your option to install it permanently later. This type of image is what most people will want to use. This image is adjusted to work properly on Mac systems. The server install image allows you to install Ubuntu permanently on a computer for use as a server.
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