Error: Possible missing firmware /lib/firmware/i915/kbl_dmc_ver1_01.bin for module i915

DMC provides additional graphics low-power idle states. It provides capability to save and restore display registers across these low-power states independently from the OS/Kernel.

Fix: Install the missing firmware.
Visit this site
Download DMC – Ver 1.01

tar xvf

Open and check that KERNEL_FIRMWARE_DIR=”/lib/firmware” (It seems to be appropriate).

cd kbl_dmc_ver1_01/

Install it:

sudo bash ./

Credits: askubuntu