[Bug 111594] [guc/huc] Deep Package C-states never reached after laptop screen is turned off

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111594

--- Comment #17 from Don Hiatt <don.hiatt at intel.com> ---
(In reply to kitestramuort from comment #16)
> i915 is compiled in, along with the required firmware.
> 
> Finished loading DMC firmware i915/kbl_dmc_ver1_04.bin (v1.4)
> [    0.264710] [drm] HuC: Loaded firmware i915/kbl_huc_ver02_00_1810.bin
> (version 2.0)
> [    0.276705] [drm] GuC: Loaded firmware i915/kbl_guc_32.0.3.bin (version
> 32.0)
> [    0.284788] [drm] CT: enabled
> [    0.305613] [drm] Initialized i915 1.6.0 20190619 for 0000:00:02.0 on
> minor 0
> 
> # turbostat --quiet --show CPU%c7,GFX%rc6,Totl%C0,Any%C0,GFX%C0 sleep 10
> 10.004035 sec
> CPU%c7	GFX%rc6	Totl%C0	Any%C0	GFX%C0
> 96.69	99.06	4.74	4.13	0.32
> 95.04	99.06	4.74	4.13	0.32
> 97.03
> 97.29
> 97.41
> 
> # rtcwake -s 30 -m disk
> 
> 
> # turbostat --quiet --show CPU%c7,GFX%rc6,Totl%C0,Any%C0,GFX%C0 sleep 10
> 10.002372 sec
> CPU%c7	GFX%rc6	Totl%C0	Any%C0	GFX%C0
> 96.35	5.20	7.43	6.78	80.83
> 91.77	5.20	7.43	6.78	80.83
> 99.09
> 96.83
> 97.71
> 
> The dreadful 5.20...
> After that...
> # turbostat --show Pkg%pc8
> Pkg%pc8
> 0.00
> 0.00
What value of guc_enable are you giving? Also, this is what it looks like on
KBL with drm-tip with the proper firmware.

[  213.513852] [drm] Finished loading DMC firmware i915/kbl_dmc_ver1_04.bin
(v1.4)
[  213.573467] [drm] GuC communication enabled
[  213.578063] i915 0000:00:02.0: GuC firmware i915/kbl_guc_33.0.0.bin version
33.0 submission:disabled
[  213.578065] i915 0000:00:02.0: HuC firmware i915/kbl_huc_4.0.0.bin version
4.0 authenticated:yes
[  213.579030] [drm] Initialized i915 1.6.0 20191007 for 0000:00:02.0 on minor
0
[  213.581581] ACPI: Video Device [GFX0] (multi-head: yes  rom: no  post: no)

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