Gnome shell doesn't like my mouse

[Jerome Lille]

Hi

I've noticed in system log the following message popping up from time
to time.

gnome-shell[4119]: libinput error: event5  - Kingsis mouse: client bug:
event processing lagging behind by 21ms, your system is too slow

What should I do about? What is the actual problem? Is my mouse too old
and needs to be replaced? It is not a bluetooth mouse, but one with a
tail.

/Jerome

[Samuel Sieb]

On 9/16/20 9:29 AM, Jerome Lille wrote:
> I've noticed in system log the following message popping up from time
> to time.
>
> gnome-shell[4119]: libinput error: event5  - Kingsis mouse: client bug:
> event processing lagging behind by 21ms, your system is too slow

I get the same thing.  Mine is wireless, but it's a USB dongle.

[Jerome Lille]

On Wed, 2020-09-16 at 11:24 -0700, Samuel Sieb wrote:
> On 9/16/20 9:29 AM, Jerome Lille wrote:
> > I've noticed in system log the following message popping up from
> > time
> > to time.
> >
> > gnome-shell[4119]: libinput error: event5  - Kingsis mouse: client
> > bug:
> > event processing lagging behind by 21ms, your system is too slow
>
> I get the same thing.  Mine is wireless, but it's a USB dongle.

Good to know I'm not the only one. I guess it is harmless and can be ignored?
/Jerome

[George N. White III]

On Wed, 16 Sep 2020 at 13:29, Jerome Lille  wrote:
> Hi
>
> I've noticed in system log the following message popping up from time
> to time.
>
> gnome-shell[4119]: libinput error: event5  - Kingsis mouse: client bug:
> event processing lagging behind by 21ms, your system is too slow

From my somewhat old Microsoft Wheel Mouse Optical 1.1A USB connected
via an older hub:

gnome-shell[11094]: libinput error: event7  - Microsoft Microsoft 3-Button
Mouse with IntelliEye(TM): client bug: event processing lagging behind by
28ms, your system is too slow
> What should I do about? What is the actual problem? Is my mouse too old
> and needs to be replaced? It is not a bluetooth mouse, but one with a
> tail.

It is a feature:
https://www.phoronix.com/scan.php?page=news_item&px=Libinput-1.16-RC

One comment blames lagging response on too many messages informing you your
system is lagging.

EXTERNAL: Re: Gnome shell doesn't like my mouse

[Wells, Roger K.]

On 9/17/20 2:54 PM, George N. White III wrote:
On Wed, 16 Sep 2020 at 13:29, Jerome Lille <[e-mail]> wrote:
Hi

I've noticed in system log the following message popping up from time
to time.

gnome-shell[4119]: libinput error: event5  - Kingsis mouse: client bug:
event processing lagging behind by 21ms, your system is too slow

From my somewhat old Microsoft Wheel Mouse Optical 1.1A USB connected
via an older hub:

gnome-shell[11094]: libinput error: event7  - Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): client bug: event processing lagging behind by 28ms, your system is too slow

What should I do about? What is the actual problem? Is my mouse too old
and needs to be replaced? It is not a bluetooth mouse, but one with a
tail.

It is a feature:
https://www.phoronix.com/scan.php?page=news_item&px=Libinput-1.16-RC

One comment blames lagging response on too many messages informing you your system is lagging.
FWIW, libinput 1.16 (FC32) I get the same messages with my 10 year old MS Bluetooth Notebook Mouse 5000

--
George N. White III

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[Tim]

On Thu, 2020-09-17 at 15:53 -0300, George N. White III wrote:
> It is a feature:
> https://www.phoronix.com/scan.php?page=news_item&px=Libinput-1.16-RC
>
> One comment blames lagging response on too many messages informing
> you your system is lagging.

Really?  A system too slow to handle a mouse?  How can it ever manage
the other *far* more complex tasks?

[Roger Heflin]

To get 20ms of delay you would only need a tiny bit of paging every so
often or a bit of cpu contention so that it delays your time slice
because something is on the cpu the kernel wants to schedule you on..

On Fri, Sep 18, 2020 at 4:08 AM Tim via users
 wrote:
> On Thu, 2020-09-17 at 15:53 -0300, George N. White III wrote:
> > It is a feature:
> > https://www.phoronix.com/scan.php?page=news_item&px=Libinput-1.16-RC
> >
> > One comment blames lagging response on too many messages informing
> > you your system is lagging.
>
> Really?  A system too slow to handle a mouse?  How can it ever manage
> the other *far* more complex tasks?
>
> --
>
> uname -rsvp
> Linux 3.10.0-1127.19.1.el7.x86_64 #1 SMP Tue Aug 25 17:23:54 UTC 2020 x86_64
>
> Boilerplate:  All unexpected mail to my mailbox is automatically deleted.
> I will only get to see the messages that are posted to the mailing list.
>
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[Tim]

Tim:
> > A system too slow to handle a mouse?  How can it ever manage
> > the other *far* more complex tasks?

Roger Heflin:
> To get 20ms of delay you would only need a tiny bit of paging every
> so often or a bit of cpu contention so that it delays your time slice
> because something is on the cpu the kernel wants to schedule you on..

I'm staggered.  On a system that runs at 1,000,000,000 cycles per
second (picking 1 GHz as a very conservative modern speed), which can
be stated as 0.000,000,001 of a second per cycle, hardware (or Gnome?)
can bog things down by that much?!

My 30 year old 16 MHz Amiga had no trouble whizzing the mouse about
while taxing the system with other things.

I've got some old punch cards still laying around, if my PC is feeling
a bit to stressed by me using the peripherals...