Here you can download the official Ubuntu 15.04 “Vivid Vervet” ISO for free.
On 20 October 2014, Shuttleworth announced that Ubuntu 15.04 would be named Vivid Vervet. It was released on 23 April 2015. It is the 22nd release of Ubuntu, and used systemd instead of Upstart by default. Jesse Smith of DistroWatch praised the stability of the release, especially amid the switch to systemd. This release also featured locally integrated menus by default, replacing the previous default global menus. This release included modest improvements in Intel Haswell graphics performance and bigger improvements for AMD Radeon graphics cards using the open-source Radeon R600 and RadeonSI Gallium3D drivers.
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. You will need at least 384MiB of RAM to install from this image.
There are two images available, each for a different type of computer:
64-bit PC (AMD64) desktop image
Choose this to take full advantage of computers based on the AMD64 or EM64T architecture (e.g., Athlon64, Opteron, EM64T Xeon, Core 2). If you have a non-64-bit processor made by AMD, or if you need full support for 32-bit code, use the i386 images instead.
32-bit PC (i386) desktop image
For almost all PCs. This includes most machines with Intel/AMD/etc type processors and almost all computers that run Microsoft Windows, as well as newer Apple Macintosh systems based on Intel processors. Choose this if you are at all unsure.
Server install image
The server install image allows you to install Ubuntu permanently on a computer for use as a server. It will not install a graphical user interface.
There are two images available, each for a different type of computer:
64-bit PC (AMD64) server install image
Choose this to take full advantage of computers based on the AMD64 or EM64T architecture (e.g., Athlon64, Opteron, EM64T Xeon, Core 2). If you have a non-64-bit processor made by AMD, or if you need full support for 32-bit code, use the i386 images instead.
32-bit PC (i386) server install image
For almost all PCs. This includes most machines with Intel/AMD/etc type processors and almost all computers that run Microsoft Windows, as well as newer Apple Macintosh systems based on Intel processors. Choose this if you are at all unsure.
snappy Ubuntu Core images
The snappy Ubuntu Core image allows you to install Ubuntu permanently on a computer, using the snappy transactional update system.
There are two images available, each for a different type of computer:
64-bit PC (AMD64) snappy image
Choose this to take full advantage of computers based on the AMD64 or EM64T architecture (e.g., Athlon64, Opteron, EM64T Xeon, Core 2). If you have a non-64-bit processor made by AMD, or if you need full support for 32-bit code, use the Intel x86 images instead.
ARMhf BeagleBone Black snappy image
For BeagleBone Black boards.
