Fedora Kernel

Downgrading to old dracut and rebuild the initramfs fixed the problem for me.

sudo dnf install dracut-053-4.fc34
export LATEST_KERNEL="5.12.9-300.fc34.x86_64"
sudo cp /boot/initramfs-${LATEST_KERNEL}.img /boot/initramfs-${LATEST_KERNEL}.bak.$(date +%m-%d-%H%M%S).img
sudo dracut -f /boot/initramfs-${LATEST_KERNEL}.img ${LATEST_KERNEL}

thanx to all for your investigation