From: Paul Menzel <pmenzel+linux-input@molgen.mpg.de>
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org,
it+linux-input@molgen.mpg.de
Subject: Re: i8042 AUX port [serio1] suspend takes a second on Dell XPS 13 9360 and TUXEDO Book 1406
Date: Tue, 30 Jan 2018 19:39:32 +0100 [thread overview]
Message-ID: <a7c19320-4942-e41d-5323-0ac3693e7012@molgen.mpg.de> (raw)
In-Reply-To: <20180130180736.ehucqywbz7zdl4v7@dtor-ws>
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Dear Dmitry,
On 01/30/18 19:07, Dmitry Torokhov wrote:
> On Tue, Jan 30, 2018 at 09:52:45AM -0800, Dmitry Torokhov wrote:
>> On Tue, Jan 30, 2018 at 06:36:34PM +0100, Paul Menzel wrote:
>>> I do not know, when it started, but with Linux 4.14-rc8 and 4.15,
>>> benchmarking suspend and resume time with `sleepgraph.py` [1][2], there is a
>>> regression, that i8042 AUX port [serio1] suspend takes a second on Dell XPS
>>> 13 9360 and TUXEDO Book 1406.
>>
>> It would be really helpful to know when the regression started.
>
> So the reason it takes longer is because the touchpad does not want to
> talk to us for some reason and we wait until commands time out:
>
> [ 94.591636] calling serio1+ @ 2299, parent: i8042
> [ 94.794292] psmouse serio1: Failed to disable mouse on isa0060/serio1
> [ 95.593303] call serio1+ returned 0 after 974280 usecs
>
> but it is not clear why it happens, I do not think we changed anything
> in that path for a while, so it might be some other change affecting
> things indirectly. I'm afraid you'll have to narrow the scope, and
> ideally bisect.
Thank you for looking into this. Just to note, that it worked with Linux
4.14.1 from Ubuntu 17.10, so it’s probably something in 4.15. Bisecting
will take a bit, as the FTRACE stuff broke in Linux 4.15-rc1 and was
only fixed in 4.15-rc9. Hopefully, it’s just one commit I need to
backport. I’ll get back to you hopefully at the end of the week.
Kind regards,
Paul
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next prev parent reply other threads:[~2018-01-30 18:39 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <5a74e1a7-2083-c6b2-f51a-f44908ac8bc4@molgen.mpg.de>
2018-01-30 17:52 ` i8042 AUX port [serio1] suspend takes a second on Dell XPS 13 9360 and TUXEDO Book 1406 Dmitry Torokhov
2018-01-30 18:07 ` Dmitry Torokhov
2018-01-30 18:39 ` Paul Menzel [this message]
2018-02-03 11:09 ` Paul Menzel
2018-02-14 16:41 ` i8042 AUX port [serio1] suspend takes a second on Dell XPS 13 9360 Paul Menzel
2018-02-14 17:11 ` Mario.Limonciello
2018-02-15 8:26 ` Paul Menzel
2018-02-15 8:40 ` Paul Menzel
2018-02-15 15:22 ` Mario.Limonciello
[not found] ` <9e83b8b4-7ea5-d286-a559-66e000df7da1@molgen.mpg.de>
2020-07-09 8:50 ` Paul Menzel
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