If you want to help us with testing latest builds of Ubuntu MATE - you can use Quickemu application which is written by Martin Wimpress and based on mature virtualisation application named QEMU. So the testing is done in the virtual environment and will not cause any harm for real physical hardware.
To use virtualisation at full speed you have to enable it in the BIOS/UEFI of your device.
Below is how I'm doing this last days while testing Ubuntu MATE 20.10 (Groovy Gorilla) daily builds.
At first we need to get latest daily build of groovy. It is located in http://cdimage.ubuntu.com/ubuntu-mate/daily-live/current/ .
If you plan to test the ISO on daily basis - it is recommended to use
zsync application which downloads only changed parts of the ISO file.
It is available from official repository, install it with
sudo add-apt-repository universe sudo apt-get install zsync
Then we need to prepare a folder for ISO testing with command below:
To (re)download the ISO we need to jump to this folder and, use
cd ~/iso-testing zsync http://cdimage.ubuntu.com/ubuntu-mate/daily-live/current/groovy-desktop-amd64.iso.zsync
The groovy-desktop-amd64.iso file will be downloaded fully first time.
You can update it every time later by running the above command again.
Installing and setting up Quickemu
The Quickemu application is located at https://github.com/wimpysworld/quickemu .
To install it we need to have Git installed with:
sudo apt-get install git
Then we need to clone Quickemu repository:
cd ~/iso-testing git clone https://github.com/wimpysworld/quickemu.git
Quickemu application needs
qemu-virgil installed from Snap as shown below:
sudo apt-get install snapd snap install qemu-virgil --edge snap connect qemu-virgil:kvm
Finally on Ubuntu 18.04 LTS you have to execute additional commands to include your user into KVM (kernel virtual-machine) group:
sudo apt-get install qemu-kvm cpu-checker sudo usermod -a -G kvm $USER
So we have Quickemu and QEMU installed and can move forward to VM configuration.
Preparing virtual machines for ISO testing
Quickemu and underneath QEMU allows us to set two kinds of virtual machines - legacy (BIOS) and modern (EFI). For the most productive testing we need to test both.
To create configuration file for legacy (BIOS) VM we can use the single long command below:
cat << EOF > ~/iso-testing/groovy-legacy.conf boot="legacy" guest_os="linux" iso="/home/$USER/iso-testing/groovy-desktop-amd64.iso" disk_img="/home/$USER/iso-testing/groovy-desktop-amd64-legacy.qcow2" disk=16G EOF
The virtual hard-disk in command above is 16 gigabytes, you may want to increase it for your needs.
To create configuration file for modern (EFI) VM we can use the single long command below:
cat << EOF > ~/iso-testing/groovy-efi.conf boot="efi" guest_os="linux" iso="/home/$USER/iso-testing/groovy-desktop-amd64.iso" disk_img="/home/$USER/iso-testing/groovy-desktop-amd64-efi.qcow2" disk=16G EOF
So we have downloaded ISO-file and created two configurations for the VMs.
To launch legacy (BIOS) VM we should use commands below:
cd ~/iso-testing/quickemu ./quickemu --vm ../groovy-legacy.conf
To launch modern (EFI) VM we should use commands below:
cd ~/iso-testing/quickemu ./quickemu --vm ../groovy-efi.conf
It is recommended to remove virtual hard disk files before testing new ISO.
You can do it manually or by providing
--delete option to
Reporting test results
If you are interested - you can participate in ISO testing on the corresponding page - http://iso.qa.ubuntu.com/qatracker/milestones/413/builds for Ubuntu 20.10 daily builds.
Select Ubuntu MATE Desktop amd64 build here and then follow instructions in testcases.
if your graphics card is old and you get the following message on launch of the virtual machine
qemu_gl_create_compile_shader: compile vertex error 0:2(10): error: GLSL ES 3.00 is not supported. Supported versions are: 1.10, 1.20, and 1.00 ES
To remove this message you need to force software rendering with
LIBGL_ALWAYS_SOFTWARE=1 ./quickemu --vm ../groovy-legacy.conf.