Steps to reproduce: correctly configure bios to support ASPM Don't install any unnecessary components, no hard drives connected, no add-in cards installed boot a fresh Ubuntu 21.04 from USB check if ASPM is enabled lspci -vvvnnPPDq lspci_ubuntu.txt boot Unraid 6.9.2 check if ASPM is enabled lspci -vvvnnPPDq lspci_unraid.txt try to fix it with echo -n powersave > /sys/module/pcie_aspm/parameters/policy