From: "Rafael J. Wysocki" <rafael@kernel.org>
To: Artem Bityutskiy <dedekind1@gmail.com>
Cc: Guilhem Lettron <guilhem@barpilot.io>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Jacob Pan <jacob.jun.pan@linux.intel.com>,
Len Brown <lenb@kernel.org>, Linux PM <linux-pm@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] intel_idle: Add ICL support
Date: Wed, 26 Aug 2020 15:20:12 +0200 [thread overview]
Message-ID: <CAJZ5v0iBn8M062CpMfv8sJ9tavMjrfrDtN6aTFq7DGV60X5iLQ@mail.gmail.com> (raw)
In-Reply-To: <a7c8ee4b54b5f205548c055b7b8d599c1bd7ddeb.camel@gmail.com>
On Wed, Aug 26, 2020 at 3:09 PM Artem Bityutskiy <dedekind1@gmail.com> wrote:
>
> On Wed, 2020-08-26 at 15:03 +0200, Guilhem Lettron wrote:
> > On Wed, 26 Aug 2020 at 14:43, Rafael J. Wysocki <rafael@kernel.org> wrote:
> > > On Wed, Aug 26, 2020 at 2:05 PM Guilhem Lettron <guilhem@barpilot.io> wrote:
> > > > Use the same C-states as SKL
> > >
> > > Why is this change needed?
> >
> > On my laptop, a Dell XPS 13 7390 2-in-1 with i7-1065G7, ACPI only
> > report "C1_ACPI", "C2_ACPI" and "C3_ACPI".
>
> Did you try to dig into the BIOS menus and check if you can enable
> more/deeper C-states?
I would be surprised if there were settings for that in the BIOS, as
Windows only expects #1, C2 and C3 AFAICS.
It might be possible to disable C1E autopromotion, but that option is
not likely to be available on a laptop.
Cheers!
next prev parent reply other threads:[~2020-08-26 13:20 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-26 12:04 [PATCH] intel_idle: Add ICL support Guilhem Lettron
2020-08-26 12:43 ` Rafael J. Wysocki
2020-08-26 13:03 ` Guilhem Lettron
2020-08-26 13:09 ` Artem Bityutskiy
2020-08-26 13:19 ` Guilhem Lettron
2020-08-26 13:20 ` Rafael J. Wysocki [this message]
2020-08-26 13:16 ` Artem Bityutskiy
2020-08-26 13:18 ` Artem Bityutskiy
2020-08-26 13:21 ` Rafael J. Wysocki
2020-08-26 13:32 ` Guilhem Lettron
2020-08-26 13:41 ` Zhang Rui
2020-08-26 14:04 ` Guilhem Lettron
2020-08-26 16:02 ` Rafael J. Wysocki
2020-08-26 16:21 ` Rafael J. Wysocki
2020-08-26 16:39 ` Artem Bityutskiy
2020-08-26 16:43 ` Rafael J. Wysocki
2020-08-26 16:46 ` Guilhem Lettron
2020-08-26 17:00 ` Rafael J. Wysocki
2020-08-26 17:47 ` Zhang Rui
2020-08-26 16:52 ` Artem Bityutskiy
2020-08-26 16:19 ` Artem Bityutskiy
2020-08-26 16:25 ` Artem Bityutskiy
2020-08-26 16:28 ` Artem Bityutskiy
2020-08-26 16:41 ` Rafael J. Wysocki
[not found] ` <CAGX5Wg0655U71nFcaAJXmj1XMA3MjnCVn=q1Pf=7LLyryHhroQ@mail.gmail.com>
2020-08-26 13:17 ` Rafael J. Wysocki
2020-08-26 13:34 ` Guilhem Lettron
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