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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [guc/huc] Deep Package C-states never reached after laptop screen is turned off"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111594#c17">Comment # 17</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [guc/huc] Deep Package C-states never reached after laptop screen is turned off"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111594">bug 111594</a>
from <span class="vcard"><a class="email" href="mailto:don.hiatt@intel.com" title="Don Hiatt <don.hiatt@intel.com>"> <span class="fn">Don Hiatt</span></a>
</span></b>
<pre>(In reply to kitestramuort from <a href="show_bug.cgi?id=111594#c16">comment #16</a>)
<span class="quote">> 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</span >
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)</pre>
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