From: "Kenneth R. Crudup" <kenny@panix.com>
To: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Rafael Wysocki <rafael.j.wysocki@intel.com>,
Linux PM <linux-pm@vger.kernel.org>
Subject: Re: Help me fix a regression caused by 56b9918490 (PM: sleep: Simplify suspend-to-idle control flow)
Date: Fri, 22 Nov 2019 09:29:40 -0800 (PST) [thread overview]
Message-ID: <alpine.DEB.2.21.1911220920500.24730@hp-x360n> (raw)
In-Reply-To: <CAJZ5v0jQ3RY8An+V2VYH+ZKLC6=HrCYUMomM6jyEXJ47aeLT+A@mail.gmail.com>
On Fri, 22 Nov 2019, Rafael J. Wysocki wrote:
> First off, please try to change the sleep_no_lps0 ACPI module
> parameter (/sys/module/acpi/parameters/sleep_no_lps0) to 1 and see if
> that makes any difference.
I did try that; didn't seem to help. I will run a few tests to make sure,
though.
> If it helps, I don't think we can do much except for blacklisting your machine.
Urgh. Blacklisting from what/which facility?
Every now and then, when this thing goes to sleep it mostly goes down to 50mA
(measured by the USB-C charging port) idle current; I wish it were less, but
this is "modern" suspend. But every Nth suspend it will draw 180 to 240 mA for
reasons I can't deduce, and I was wondering if perhaps we're getting wedged in
an intermediate state on the way into s2idle. That's why I'm trying to make
sure I have access to every possible suspend enhancement.
At one point it was a regression in i915 that caused a high suspend current
at all times and I helped Chris Wilson and those guys track down, but that's
been OK for a while.
One thing that I do get is the dump on resume when it doesn't go into S0ix
(intel_pmc_core.warn_on_s0ix_failures=1) and there's a number of what I
assume are clocks and power rails that are still "on"; I imagine some of
that is done by the BIOS (e.g., "MPHY_CORE_GATED", "CNV_VNNAON_REQ_ACT").
Do you know what these are mnemonics for?
Thanks,
-Kenny
--
Kenneth R. Crudup Sr. SW Engineer, Scott County Consulting, Silicon Valley
prev parent reply other threads:[~2019-11-22 17:29 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-22 0:11 Help me fix a regression caused by 56b9918490 (PM: sleep: Simplify suspend-to-idle control flow) Kenneth R. Crudup
2019-11-22 10:12 ` Rafael J. Wysocki
2019-11-22 12:45 ` Rafael J. Wysocki
2019-11-22 17:35 ` Kenneth R. Crudup
2019-11-23 10:24 ` Kenneth R. Crudup
2019-11-24 16:02 ` Rafael J. Wysocki
2019-11-25 3:40 ` Kenneth R. Crudup
2019-11-25 13:27 ` Rafael J. Wysocki
2019-11-25 14:14 ` Rafael J. Wysocki
2019-11-25 18:27 ` Kenneth R. Crudup
2019-11-25 20:11 ` Kenneth R. Crudup
2019-11-25 20:19 ` Kenneth R. Crudup
2019-11-25 22:01 ` Rafael J. Wysocki
2019-11-25 23:32 ` Kenneth R. Crudup
2019-11-26 8:50 ` Rafael J. Wysocki
2019-11-26 16:12 ` Rafael J. Wysocki
2019-11-26 16:15 ` Kenneth R. Crudup
2019-11-26 16:27 ` Rafael J. Wysocki
2019-11-26 16:35 ` Kenneth R. Crudup
2019-11-26 18:48 ` Rafael J. Wysocki
2019-11-26 19:03 ` Kenneth R. Crudup
2019-11-26 19:09 ` Rafael J. Wysocki
2019-11-26 19:13 ` Kenneth R. Crudup
2019-11-26 19:45 ` Kenneth R. Crudup
2019-11-26 23:56 ` Kenneth R. Crudup
2019-11-27 2:35 ` Kenneth R. Crudup
2019-11-27 8:31 ` Rafael J. Wysocki
2019-11-27 22:30 ` Kenneth R. Crudup
2019-11-28 16:25 ` Rafael J. Wysocki
2019-11-25 21:47 ` Rafael J. Wysocki
2019-11-25 16:21 ` Kenneth R. Crudup
2019-11-25 21:46 ` Rafael J. Wysocki
2019-11-25 23:02 ` Kenneth R. Crudup
2019-11-26 8:53 ` Rafael J. Wysocki
2019-11-25 5:50 ` Kenneth R. Crudup
2019-11-25 7:17 ` Kenneth R. Crudup
2019-11-22 17:29 ` Kenneth R. Crudup [this message]
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