I am trying to install Ubuntu 20.04.1 and I am not getting past the following error message:
Initramfs unpacking failed: Decoding failed
I first encountered the problem while trying to install Kubuntu onto a new machine with an ASUS Prime X570-Pro motherboard, an AMD Ryzen 9 3950X, a GeForce GTX 1660 Ti, 2x KINGSTON 32GB 3200MHz DDR4.
There is no previous Windows installation on the system. Just FreeDOS.
After trying to create a new bootable USB stick (using the same USB stick and another one, with dd on a different Linux machine and with Rufus on a Windows PC) I still ran into the same issue. This is when I tried Ubuntu hoping for more success. But still the same trouble.
Does anybody know what can be done?
Best Answer
I managed to boot into the installation by enabling the launch of the Compatibility Support Module (CSM) in the UEFI BIOS Utilities. In the CSM Configuration Boot Device Control was set to Legacy OPROM only and Boot from Network Devices, Boot from Storage Devices, Boot from PCI-E/PCI Expansion Devices were set to Legacy only. After that, the installation worked perfectly fine.