It should be added to the grub command line like this as an example.
GRUB_CMDLINE_LINUX_DEFAULT="ibt=off loglevel=3 nowatchdog nvme_load=YES"
Edit: Then update grub.
It should be added to the grub command line like this as an example.
GRUB_CMDLINE_LINUX_DEFAULT="ibt=off loglevel=3 nowatchdog nvme_load=YES"
Edit: Then update grub.