Here you can download the official Ubuntu 19.04 “Disco Dingo” ISO for free.
Shuttleworth announced Ubuntu 19.04 Disco Dingo on 20 October 2018. It was released on 18 April 2019. It incorporates Linux kernel 5.0, which adds support for AMD FreeSync technology for liquid-crystal displays, Raspberry Pi touchscreens, Adiantum encryption, Btrfs swap files as well as many USB 3.2 and Type-C improvements and several other new hardware. It uses GNOME 3.32, which includes a new icon set, night light intensity control, advanced application permissions, favoriting files, and a new header bar as well as ‘find’ and ‘read only’ modes in the default terminal emulator. Version 19 of the open-source graphics drivers Mesa is natively available in this version of Ubuntu. Furthermore, the Grub menu now allows a ‘safe graphics’ mode in case of issues with graphics cards or graphics drivers. Geoclue integration and fractional scaling in the GNOME Shell for HiDPI displays are also included. Improvements for running Ubuntu on a VMWare virtual machine include integration of open-vm-tools within Ubuntu, allowing for bi-directional clipboard and file sharing.
Ubuntu Server 19.04 updated QEMU to version 3.1, allowing for creation of a virtual 3D GPU inside QEMU virtual machines. libvirt was updated to version 5.0 and Samba was updated to version 4.10.x. Samba and its dependencies were updated to Python 3, with the exception of tdb, which still builds a Python 2 package, namely python-tdb. Ubuntu Server 19.04 includes the latest OpenStack release, Stein, and has vSwitch version 2.11.
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 1024MiB of RAM to install from this image.
64-bit PC (AMD64) desktop image
Choose this if you have a computer based on the AMD64 or EM64T architecture (e.g., Athlon64, Opteron, EM64T Xeon, Core 2). 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.
64-bit PC (AMD64) server install image
Choose this if you have a computer based on the AMD64 or EM64T architecture (e.g., Athlon64, Opteron, EM64T Xeon, Core 2). Choose this if you are at all unsure.