Re: 100% CPU before LUKS password

[Defiant]

I noticed this behavior too using my custom Xubuntu setup with GRUB 
folder located in the /boot folder inside the LUKS-encrypted ext4 rootfs 
partition. Grub was setup with GRUB_ENABLE_CRYPTODISK=y. The grub binary 
at /boot/efi/EFI/ubuntu/grubx64.efi seems to be causing my CPU fan to 
spin while waiting at the initial password prompt (before the rootfs is 
decrypted).



On 11/20/22 04:17, Tim Lewis wrote:
> While some Linux distributions (Debian, Fedora, etc) put /boot outside of LUKS,
> the ones using the Calamares installer (EndeavourOS, Spiral, etc)
> often put /boot inside LUKS/btrfs.
> The latter layout permits kernel rolebacks via btrfs snapshots, but
> will use 100% of one core until the kernel is loaded.
> This is easy to reproduce and observe in KVM.
>
> Is Calamares missing a GRUB configuration or is this a bug?