Looks like I cannot reproduce it on 4.3.0-994-generic.
It complained about missing firmware during installation: W: Possible missing firmware /lib/firmware/i915/skl_guc_ver4.bin for module i915
$ grep i915 /var/log/kern.log [drm] Initialized i915 1.6.0 20151010 for 0000:00:02.0 on minor 0
Looks like I cannot reproduce it on 4.3.0-994-generic.
It complained about missing firmware during installation: i915/skl_ guc_ver4. bin for module i915
W: Possible missing firmware /lib/firmware/
$ grep i915 /var/log/kern.log
[drm] Initialized i915 1.6.0 20151010 for 0000:00:02.0 on minor 0