# run 'update-grub' afterwards to update /boot/grub/grub.cfg. # info -f grub -n 'Simple configuration' GRUB_DEFAULT=0 GRUB_TIMEOUT=5 GRUB_DISTRIBUTOR=`( . /etc/os-release && echo ${NAME} )` GRUB_CMDLINE_LINUX_DEFAULT="quiet amd_pstate=active amd_prefcore=enable pcie_aspm.policy=powersupersave pcie_aspm=force" GRUB_CMDLINE_LINUX=""