There are a few ways to manually test Ubiquity installer, here is information on how to get the latest installer, boot it, (optionally upgrade it) and test it.

Getting Latest Installation Media

  • Go to http://iso.qa.ubuntu.com

  • Select relevant milestone, e.g. "Saucy Daily"
  • Scroll to relevant product, e.g. "Product (Ubuntu)"
  • Click relevant build, e.g. "Ubuntu Desktop amd64" for 64-bit image
  • Click download instructions for links to various download methods

Alternatively you can download latest Ubuntu Desktop images directly from cdimages.ubuntu.com:

Prepare Installation Media

For Virtual Machines (VirtManager, Qemu, Virtual Box, VMWare, etc):

  • No steps required, simply point your virtual machine to boot from the downloaded ISO file.

For USB-sticks to boot laptops/desktops:

For DVDs to boot laptops/desktops:

If you do ubuntu testing often, you might want to use USB-sticks or re-writable DVDs as one can reuse the same media multiple times.


As you are testing an in-development installer, make sure you boot it on a disposable machine with no useful data on it, as it can be accidentally removed. A Virtual Machine (VirtManager, Qemu, VirtualBox, VMWare, etc) or a spare old laptop are good candidates for testing.

  • For Virtual Machine, point to boot from the downloaded .iso file

  • For laptops/desktops, insert USB-stick or DVD disk and boot from it.

General test cases

The http://iso.qa.ubuntu.com website offers many test cases for our current images. Browse the website for relevant test-cases. For example, some of Ubuntu Desktop installer standard test cases are:

Upgrading Installer

  • Boot into "Live Session" (see steps in the above test case)
  • (optional) using software properties add a new PPA
  • Using Software Updater, update & upgrade all packages

  • Launch the installer
    • (normal) click installer icon in the dash
  • To activate additional modes, such as debug or a new hidden feature do following:

    • Open Terminal from the dash or press CTRL-ALT-T

    • Execute ubiquity followed by feature flags, e.g. ubiquity --debug or ubiquity --sso

Testing WiFi in VM

  • Boot to Try Ubuntu
  • modprobe virt_wifi module
  • Use ip link add link en0 name wlan0 type virt_wifi to wrap wifi in ethernet

  • Use network manager indicator to disable dhcp / networking on the ethernet device
  • Then start ubiquity
  • Wifi screen should offer to connect to a fake wifi ap that is visible on the wlan0 device, which in practice simply passes through the dhcp to the regular qemu eth device.

Ubiquity/Testing (last edited 2021-04-01 15:24:46 by xnox)