Virtualization

Run virtual machines at near-native speeds and manage them at ease

Virtualization Installing QEMU on Fedora Linux Fetching OVMF UEFI from the correct source Installing libvirt and virt-install on Fedora Linux Setting up Fedora Workstation VM on QEMU using BIOS Setting up Fedora Workstation VM on QEMU using UEFI Setting up intrinsic VNC server with VMs Setting viewport resolution using OVMF BIOS Setting up Fedora Workstation domain on libvirt Sharing a chunk of memory as video memory in QEMU Mapping a virtualized guest port to a host port Playing around with various VGA providers Offloading domain TTY output to console with custom kernel/initramfs images Offloading domain TTY output to console with original kernel/initramfs images
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Setting viewport resolution using OVMF BIOS

  1. Download the Fedora Workstation ISO file from website and store it in a reference directory cdromimg. 
    https://getfedora.org
  2. Source OVMF UEFI assets by following the Fetching OVMF UEFI from the correct source guide, if not done already.
  3. Start a virtual machine for playing around with setting viewport resolution for the live ISO and there is no need for a virtual disk image here. 
    $ qemu-system-x86_64 \
    -boot menu=on \
    -m 2048 \
    -cpu max \
    -smp 4 \
    -bios /usr/share/edk2/ovmf/OVMF_CODE.fd \
    -cdrom cdromimg/<Fedora-Workstation-Live-x86_64-xx-y.z.iso> \
    -accel kvm
  4. Press ESC key when the following screen is visible during the startup to navigate into the OVMF UEFI settings.
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  5. Once inside the OVMF UEFI settings, just use the arrow keys to point at Continue and press ENTER to resume booting.
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  6. QEMU would now boot into the live environment of Fedora Workstation so use the arrow keys to point at the first option and press ENTER to boot up.
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  7. Once the live environment of Fedora Workstation has booted up, open up a terminal instance.
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  8. Execute the following command to install xrandr on the live environment. 
    $ sudo dnf install xrandr
  9. Once xrandr is installed on the live environment, execute it to find a list of supported resolutions and refresh rates for the current renderer. 
    $ xrandr

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  10. Restart the live environment and press the ESC key during the startup to navigate into the OVMF UEFI settings.
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  11. Use the arrow keys to point at Device Manager, press ENTER and then select the OVMF Platform Configuration option.
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  12. Observe that the Preferred Resolution at Next Boot is UNSET. Open up the popup for Change Preferred Resolution for Next Boot and select 1280x720.
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  13. Press F10 key and then press Y to confirm saving the configuration. Press Ctrl + Alt + Del to reboot the VM.
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  14. Once the booting into the live environment, the set resolution would be made available to select from the list of all other resolution.

Authors: Akashdeep Dhar, Jarek Prokop, Nick Dirschel