linux-kernel - Re: [PATCH v3 0/8] PM / ACPI: sleep: Additional changes related to suspend-to-idle

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Date:   Mon, 19 Aug 2019 09:59:02 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Kristian Klausen <kristian@...usen.dk>
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Linux ACPI <linux-acpi@...r.kernel.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Zhang Rui <rui.zhang@...el.com>,
        Rajneesh Bhardwaj <rajneesh.bhardwaj@...ux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Mario Limonciello <mario.limonciello@...l.com>,
        Kai-Heng Feng <kai.heng.feng@...onical.com>
Subject: Re: [PATCH v3 0/8] PM / ACPI: sleep: Additional changes related to suspend-to-idle

On Fri, Aug 16, 2019 at 10:26 PM Kristian Klausen <kristian@...usen.dk> wrote:
>
> On 02.08.2019 12.33, Rafael J. Wysocki wrote:
> > Hi All,
> >
> >>> On top of the "Simplify the suspend-to-idle control flow" patch series
> >>> posted previously:
> >>>
> >>> https://lore.kernel.org/lkml/71085220.z6FKkvYQPX@kreacher/
> >>>
> >>> sanitize the suspend-to-idle flow even further.
> >>>
> >>> First off, decouple EC wakeup from the LPS0 _DSM processing (patch 1).
> >>>
> >>> Next, reorder the code to invoke LPS0 _DSM Functions 5 and 6 in the
> >>> specification-compliant order with respect to suspending and resuming
> >>> devices (patch 2).
> >>>
> >>> Finally, rearrange lps0_device_attach() (patch 3) and add a command line
> >>> switch to prevent the LPS0 _DSM from being used.
> >> The v2 is because I found a (minor) bug in patch 1, decided to use a module
> >> parameter instead of a kernel command line option in patch 4.  Also, there
> >> are 4 new patches:
> >>
> >> Patch 5: Switch the EC over to polling during "noirq" suspend and back
> >> during "noirq" resume.
> >>
> >> Patch 6: Eliminate acpi_sleep_no_ec_events().
> >>
> >> Patch 7: Consolidate some EC code depending on PM_SLEEP.
> >>
> >> Patch 8: Add EC GPE dispatching debug message.
> > The v3 is just a rearranged v2 so as to move the post sensitive patch (previous patch 2)
> > to the end of the series.   [After applying the full series the code is the same as before.]
> >
> > For easier testing, the series (along with some previous patches depended on by it)
> > is available in the pm-s2idle-testing branch of the linux-pm.git tree at kernel.org:
> >
> > https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git/log/?h=pm-s2idle-testing
> It was just testing this patch series(461fc1caed55), to see if it would
> fix my charging issue
> (https://bugzilla.kernel.org/show_bug.cgi?id=201307), which it didn't.

It is unlikely to help in that case.

> I did however notice that my laptop (ASUS Zenbook UX430UNR/i7-8550U)
> won't wake when opening the lid or pressing a key, the only way to wake
> the laptop is pressing the power button.
>
> I also tested mainline (5.3.0-rc4 b7e7c85dc7b0) and 5.2.8 and the laptop
> wakes without issue when the lid is opened or a key is presed.
> > Please refer to the changelogs for details.

Thanks for your report.

I seem to see a similar issue with respect to the lid on one of my
test machines, looking into it right now.