Touchpad occasionally has significant delay

cephian · 2022-02-11 17:24:24

Every once in a while (fairly often) my touchpad mouse gets very laggy. I want to be clear that it does NOT get "jumpy". The mouse still moves smoothly on the screen, but there's a 300-500ms or so delay between when my finger moves and when the mouse does.

Let me know if I should post any additional info. I'm starting to get suspicious that this may be a bug in the kernel itself.

Info/Things I've tried
- I have not been able to figure out if anything specific is correlated to it happening, it just seems to start and then go away at random times.
- This bug happens under both the libinput and Synaptics touchpad drivers.
- When I plug in an external mouse it has no lag, and the touchpad can be lagging at the exact same time the external mouse is not.
- I don't see anything suspicious in dmesg.
- Looking at the output of "libinput debug-events --device /dev/input/(my touchpad device)" I can visually see the delay between my finger movement and when the touchpad move events print (only when the mouse is lagging).
- The mouse polling rate (tested with evhz) averages 140hz and does not go down when it starts lagging.

System info
I'm running updated Arch Linux with standard kernel on an ASUS Zenbook 14 Laptop.
I'm using dwm under Xorg.

Touchpad section of output of "hwinfo"

  I: Bus=0018 Vendor=04f3 Product=3134 Version=0100
  N: Name="ASUE140A:00 04F3:3134 Touchpad"
  P: Phys=i2c-ASUE140A:00
  S: Sysfs=/devices/platform/AMDI0010:03/i2c-0/i2c-ASUE140A:00/0018:04F3:3134.0001/input/input15
  U: Uniq=
  H: Handlers=event12 mouse1
  B: PROP=5
  B: EV=1b
  B: KEY=e520 10000 0 0 0 0
  B: ABS=2e0800000000003
  B: MSC=20

Last edited by cephian (2022-02-11 17:33:43)

neo1973 · 2022-02-12 00:30:58

This sounds very much like a known problem without a solution. I'm affected as well with a Lenovo Thinkbook 14 G3. See theses tickets for reference:

https://gitlab.freedesktop.org/libinput … issues/618 (title says Tiger Like but it seems to affect other platforms as well)
https://bugzilla.kernel.org/show_bug.cgi?id=214597

cephian · 2022-02-12 03:12:39

neo1973 wrote:

This sounds very much like a known problem without a solution. I'm affected as well with a Lenovo Thinkbook 14 G3. See theses tickets for reference:
https://gitlab.freedesktop.org/libinput … issues/618 (title says Tiger Like but it seems to affect other platforms as well)
https://bugzilla.kernel.org/show_bug.cgi?id=214597

It sounds similar, but it's definitely different than what I'm experiencing. The posts talk about mouse acceleration and inertia changing, for me all mouse settings functionally stay the same just with an added input lag. Also, my CPU is not Intel Tiger Lake, nor Intel at all. lscpu | grep 'Model name' gives me "AMD Ryzen 7 4700U with Radeon Graphics"

EDIT: Upon reading the comments more closely, I can see people reporting much more similar setups to me. It looks like this is the same type of thing I'm experiencing, thanks for the link.

Last edited by cephian (2022-02-12 05:35:56)

franka107 · 2022-12-13 17:02:18

I have the same problem, my cpu is "AMD Ryzen 7 4700U with Radeon Graphics" and i am using Zorin OS

System info

OS: Zorin OS 16.2
Model: Acer Swift SF314-42-R9YN

Touchpad section of output of "hwinfo"

I: Bus=0018 Vendor=04f3 Product=312b Version=0100
N: Name="ELAN0504:01 04F3:312B Touchpad"
P: Phys=i2c-ELAN0504:01
S: Sysfs=/devices/platform/AMDI0010:03/i2c-0/i2c-ELAN0504:01/0018:04F3:312B.0001/input/input15
U: Uniq=
H: Handlers=mouse1 event11
B: PROP=5
B: EV=1b
B: KEY=e520 10000 0 0 0 0
B: ABS=2e0800000000003
B: MSC=20

Last edited by franka107 (2022-12-13 17:13:05)

burakuren101 · 2023-01-19 08:05:54

I have same problem too, cpu is AMD Ryzen 7 5700u with Radeon Graphics and I use Arch Linux with Gnome.

Laptop: Thinkpad E14 G3

Touchpad info:
I: Bus=0011 Vendor=0002 Product=000e Version=0000
N: Name="ETPS/2 Elantech Touchpad"
P: Phys=isa0060/serio1/input0
S: Sysfs=/devices/platform/i8042/serio1/input/input7
U: Uniq=
H: Handlers=event8 mouse1
B: PROP=5
B: EV=b
B: KEY=e420 10000 0 0 0 0
B: ABS=661800011000003

PranshuTG · 2023-04-09 13:15:22

I dont know how to provide touchpad info but i have the same issue

ryzen 5600u with radeon graphics and gtx 1650 mobile
its an hp victus

walkingstickfan · 2023-04-13 06:23:47

post redacted

Last edited by walkingstickfan (2023-04-13 06:31:07)

walkingstickfan · 2023-04-13 06:26:34

neo1973 wrote:

This sounds very much like a known problem without a solution. I'm affected as well with a Lenovo Thinkbook 14 G3. See theses tickets for reference:
https://gitlab.freedesktop.org/libinput … issues/618 (title says Tiger Like but it seems to affect other platforms as well)
https://bugzilla.kernel.org/show_bug.cgi?id=214597

The second link goes back to 2021. This issue recently began about 6-8 weeks ago and only affects my Arch install under both the LTS and non-LTS kernels. I don't experience any issues with Debian Stable or Unstable.

Last edited by walkingstickfan (2023-04-13 06:28:04)

SibuyasManok · 2023-06-22 00:54:57

I have been experiencing this since June 2022. My laptop is Lenovo Ideapad Gaming 15ACH6 82K2. Just like others, it happens randomly and disappears randomly. Using external mouse does not seem to get affected by stuttering or slow response time.

Fazzi · 2023-10-06 17:40:16

I am also getting this issue on my Thinkpad L14 Gen 4 AMD. Here is the hwinfo for my touchpad:

49: PS/2 00.0: 10500 PS/2 Mouse                                 
  [Created at input.249]
  Unique ID: AH6Q.TApOHc3Cgf2
  Hardware Class: mouse
  Model: "ELAN0680:00 04F3:320A Mouse"
  Vendor: 0x04f3 
  Device: 0x320a "ELAN0680:00 04F3:320A Mouse"
  Compatible to: int 0x0210 0x0002
  Device File: /dev/input/mice (/dev/input/mouse0)
  Device Files: /dev/input/mice, /dev/input/mouse0, /dev/input/event11, /dev/input/by-path/platform-AMDI0010:00-event-mouse, /dev/input/by-path/platform-AMDI0010:00-mouse
  Device Number: char 13:63 (char 13:32)
  Driver Info #0:
    Buttons: 2
    Wheels: 0
    XFree86 Protocol: explorerps/2
    GPM Protocol: exps2
  Config Status: cfg=new, avail=yes, need=no, active=unknown

Voyager · 2024-03-11 00:26:25

Guys, do you have any news?
I assume it's a platform bug. I have two laptops: t14 AMD with 4750U and elitebook 845 G9 with 6850U, both have the same problem. Also want to mention that t14 does not use i2c interface for touchpad, it works true i8042 so I think it's not a libinput problem.
I also mentioned that everything works good if both laptops works on a battery i.e. without power supply connected.

Detective97 · 2024-03-28 07:25:45

Having the same issue, I think for whatever reason the wrong polling rate is being assigned to my trackpad. u can check ur trackpads frequency using evhz. 20 hz is laggy, 120+ is smooth.
Tried fixing it using modprobe but it says usbhid is in use.
so navigated to /etc/modprobe.d/
created new file mousepoll.config
added line options usbhid mousepoll=4
This sets my mousepoll to 250 after reboot instead of asking the device.
But this also only works half the time. sometimes it will randomly revert.
I'm using a thinkpad t480 and this was a problem on ubuntu too, so not an arch problem specifically.
also it wasn't like this last year, this is a recent problem in the last few months. at the same time my trackpoint and trackpoint buttons have stopped working and I've given up trying to make them work...
I think maybe the drivers for the trackpoint and trackpad are getting interchagably used. Dunno for sure.

gary8588 · 2024-03-28 20:49:10

I believe I occasionally run into a similar issue. I got a Intel Tiger Lake CPU.

Usually what helps in my situation is to switch to another TTY e.g. <CTRL>+<ALT>+F2 and then back again to where the GUI is started: <CTRL>+<ALT>+F7. That seems to flush some buffers and reload some stuff and usually the issue goes away for some time.

Give it a try

SibuyasManok · 2024-03-30 20:46:09

Oh, i forgot to update about this. Weirdly I do not experience it anymore unless a certain condition (randomly figured it out) is met. My requirement for this is when I touch another person who's affected by electrical current and my laptop's cursor would act weirdly.

I thought at first it has something to do with the processor or my laptop's charger, I still think sometimes it's my processor. But it is not the case for the laptop charger because it happens both plugged and unplugged.

Requirement is hardware/electrical conflict. Like another laptop (the root cause of my problem) is grounded and when I touch the person using their laptop while I use my laptop, I get the touchpad cursor delay. When I stop touching them, it goes away.

Safe to say my issue is not related, maybe, to the amd processor.

Arch Linux

#1 2022-02-11 17:24:24

Touchpad occasionally has significant delay

#2 2022-02-12 00:30:58

Re: Touchpad occasionally has significant delay

#3 2022-02-12 03:12:39

Re: Touchpad occasionally has significant delay

#4 2022-12-13 17:02:18

Re: Touchpad occasionally has significant delay

#5 2023-01-19 08:05:54

Re: Touchpad occasionally has significant delay

#6 2023-04-09 13:15:22

Re: Touchpad occasionally has significant delay

#7 2023-04-13 06:23:47

Re: Touchpad occasionally has significant delay

#8 2023-04-13 06:26:34

Re: Touchpad occasionally has significant delay

#9 2023-06-22 00:54:57

Re: Touchpad occasionally has significant delay

#10 2023-10-06 17:40:16

Re: Touchpad occasionally has significant delay

#11 2024-03-11 00:26:25

Re: Touchpad occasionally has significant delay

#12 2024-03-28 07:25:45

Re: Touchpad occasionally has significant delay

#13 2024-03-28 20:49:10

Re: Touchpad occasionally has significant delay

#14 2024-03-30 20:46:09

Re: Touchpad occasionally has significant delay

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