Comment 2 for bug 908387

I've put temporaly the modules on /etc/initramfs-tools/modules and then updated the initramfs of the latest kernel installed:

# List of modules that you want to include in your initramfs.
# They will be loaded at boot time in the order below.
#
# Syntax: module_name [args ...]
#
# You must run update-initramfs(8) to effect this change.
#
# Examples:
#
# raid1
# sd_mod

cryptd
aes_x86_64
aesni_intel

Now they are being loaded on startup as should be. Prove of that is that the aesni_intel module now can't be unloaded due to it being in use:

raul@n53sn:/etc/initramfs-tools$ sudo rmmod aesni_intel
[sudo] password for raul:
ERROR: Module aesni_intel is in use
raul@n53sn:/etc/initramfs-tools$