Comment # 2 on bug 1129035 from Vit Pelcak

# cat /etc/modprobe.d/50-i915.conf 
options i915 enable_dc=1 enable_guc=2 enable_fbc=1 enable_psr=1
disable_power_well=0 modeset=1

juno:~ # dmesg | grep -i guc
[    3.448018] Setting dangerous option enable_guc - tainting kernel
[    3.528615] [drm] GuC: Loaded firmware i915/kbl_guc_ver9_39.bin (version
9.39)
[    3.539269] i915 0000:00:02.0: GuC firmware version 9.39
[    3.539270] i915 0000:00:02.0: GuC submission disabled
juno:~ # dmesg | grep -i huc
[    3.518762] [drm] HuC: Loaded firmware i915/kbl_huc_ver02_00_1810.bin
(version 2.0)
[    3.539271] i915 0000:00:02.0: HuC enabled