The same here while performing "apt-get dist-upgrade":
update-initramfs: Generating /boot/initrd.img-4.8.0-30-generic
W: Possible missing firmware /lib/firmware/i915/kbl_guc_ver9_14.bin for module i915
W: Possible missing firmware /lib/firmware/i915/bxt_guc_ver8_7.bin for module i915
I've got 5 years old Intel i5 on ASUS U36SD laptop.
The same here while performing "apt-get dist-upgrade":
update-initramfs: Generating /boot/initrd. img-4.8. 0-30-generic i915/kbl_ guc_ver9_ 14.bin for module i915 i915/bxt_ guc_ver8_ 7.bin for module i915
W: Possible missing firmware /lib/firmware/
W: Possible missing firmware /lib/firmware/
I've got 5 years old Intel i5 on ASUS U36SD laptop.