Hi,

Thanks for the fast reply!

One remark: The board CPU is based on Ice-lake. 

Yes the build happens on a Ubuntu 20.04:
acrn@acrn-virtual-machine:~/acrn-work/acrn-hypervisor$ cat /etc/os-release

NAME="Ubuntu"

VERSION="20.04.4 LTS (Focal Fossa)"

ID=ubuntu

ID_LIKE=debian

PRETTY_NAME="Ubuntu 20.04.4 LTS"

VERSION_ID="20.04"

HOME_URL=https://www.ubuntu.com/

SUPPORT_URL=https://help.ubuntu.com/

BUG_REPORT_URL=https://bugs.launchpad.net/ubuntu/

PRIVACY_POLICY_URL=https://www.ubuntu.com/legal/terms-and-policies/privacy-policy

VERSION_CODENAME=focal

UBUNTU_CODENAME=focal

On the destination machine currently the same version is running.