[Trisquel-users] LIbreboot grub asks for LUKS password twice

[gnuser]

Hey guys,

SO, I installed my SSD in my T400 Libreboot laptop. I followed the  
instructions on the guide for doing so, and after some adjustements I got the  
system to boot just fine. However, I am having the issue of having to input  
my full disk encryption password twice! I searched around and found this  
https://wiki.parabola.nu/Installing_Parabola_on_Libreboot_with_full_disk_encryption_(including_/boot)  
 As it seems the folks at parabola have the same issue and explain why. SO  
far so good, I tried using their solution for the problem (see under 11  
Bonus: Using a key file to unlock /boot/)  but they issue a command that does  
nothing in Trisquel, namely mkinitcpio
Is there anything that I have to install in order to get this to work under  
Trisquel 8?

Thanks.