linux-kernel - Re: Regression: Mouse gets sluggish after suspend/resume and power usage significant higher after resume

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Date:   Fri, 8 Apr 2022 19:13:49 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Thorsten Leemhuis <regressions@...mhuis.info>
Cc:     "regressions@...ts.linux.dev" <regressions@...ts.linux.dev>,
        LKML <linux-kernel@...r.kernel.org>,
        "open list:HID CORE LAYER" <linux-input@...r.kernel.org>,
        Nico Schottelius <nico-bugzilla.kernel.org@...ottelius.org>,
        Jingle Wu <jingle.wu@....com.tw>,
        Jiri Kosina <jikos@...nel.org>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>
Subject: Re: Regression: Mouse gets sluggish after suspend/resume and power
 usage significant higher after resume

On Fri, Apr 08, 2022 at 03:20:14PM +0200, Thorsten Leemhuis wrote:
> Hi, this is your Linux kernel regression tracker.
> 
> I noticed a regression report in bugzilla.kernel.org that afaics nobody
> acted upon since it was reported about a week ago, that's why I decided
> to forward it to the lists and all people that seemed to be relevant
> here. To quote from https://bugzilla.kernel.org/show_bug.cgi?id=215747 :

This looks like I2C-HID controller and I see bunch of "incomplete
report"s in the logs:

[16558.456434] i2c_hid_acpi i2c-ELAN0670:00: i2c_hid_get_input: incomplete report (14/3583)
[16558.457434] i2c_hid_acpi i2c-ELAN0670:00: i2c_hid_get_input: incomplete report (14/259)
[16558.458384] i2c_hid_acpi i2c-ELAN0670:00: i2c_hid_get_input: incomplete report (14/65281)

Let's add benjamin, Jiri and Jungle...

> 
> >  Nico Schottelius 2022-03-26 19:27:06 UTC
> > 
> > Created attachment 300619 [details]
> > dmesg
> > 
> > TL;DR:
> > 
> > Suspending and resume makes the ELAN0670:00 trackpad sluggish (very hard to move the pointer) and the energy usage of the notebook is about 3 times higher than before suspend.
> > 
> > Background:
> > 
> > 
> > On a Lenovo X1 Nano the trackpad works fine until suspend/resume.The estimated battery runtime PRIOR to suspend/resume is 8h 43m. After suspend resume it drops to 2h 20m instantly.
> > 
> > There seems to be a firmware error in the iwlwifi card show in the attached dmesg, but I am not sure whether "that's enough" to cause both symptoms.
> > 
> > Kernel is from Alpine Linux, which is basically stock upstream afaics.
> 
> See later comments for more details. In one of them the reporter states
> he's pretty sure that it didn't happen with 5.13.
> 
> Not sure if this is input, PM, bluetooth, or something else. But sounds
> like a problem in the input code to me (you have to start somewhere...).
> 
> Could somebody take a look into this? Or was this discussed somewhere
> else already? Or even fixed?
> 
> Anyway, to get this tracked:
> 
> #regzbot introduced: v5.13..v5.15.31	
> #regzbot from: Nico Schottelius  <nico-bugzilla.kernel.org@...ottelius.org>
> #regzbot title: input: Mouse gets sluggish after suspend/resume and
> power usage significant higher after resume
> #regzbot link: https://bugzilla.kernel.org/show_bug.cgi?id=215747
> 
> Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
> 
> P.S.: As the Linux kernel's regression tracker I'm getting a lot of
> reports on my table. I can only look briefly into most of them and lack
> knowledge about most of the areas they concern. I thus unfortunately
> will sometimes get things wrong or miss something important. I hope
> that's not the case here; if you think it is, don't hesitate to tell me
> in a public reply, it's in everyone's interest to set the public record
> straight.
> 
> -- 
> Additional information about regzbot:
> 
> If you want to know more about regzbot, check out its web-interface, the
> getting start guide, and the references documentation:
> 
> https://linux-regtracking.leemhuis.info/regzbot/
> https://gitlab.com/knurd42/regzbot/-/blob/main/docs/getting_started.md
> https://gitlab.com/knurd42/regzbot/-/blob/main/docs/reference.md
> 
> The last two documents will explain how you can interact with regzbot
> yourself if your want to.
> 
> Hint for reporters: when reporting a regression it's in your interest to
> CC the regression list and tell regzbot about the issue, as that ensures
> the regression makes it onto the radar of the Linux kernel's regression
> tracker -- that's in your interest, as it ensures your report won't fall
> through the cracks unnoticed.
> 
> Hint for developers: you normally don't need to care about regzbot once
> it's involved. Fix the issue as you normally would, just remember to
> include 'Link:' tag in the patch descriptions pointing to all reports
> about the issue. This has been expected from developers even before
> regzbot showed up for reasons explained in
> 'Documentation/process/submitting-patches.rst' and
> 'Documentation/process/5.Posting.rst'.

-- 
Dmitry