search

pop-os / pop

A project for managing all Pop!_OS sources
https://system76.com/pop
2.47k stars 87 forks source link

Mouse cursor suddenly gains momentum when using touchpad #1999

Open unilock opened 3 years ago

unilock commented 3 years ago

Distribution (cat /etc/os-release):

NAME="Pop!_OS"
VERSION="21.04"
ID=pop
ID_LIKE="ubuntu debian"
PRETTY_NAME="Pop!_OS 21.04"
VERSION_ID="21.04"
HOME_URL="https://pop.system76.com"
SUPPORT_URL="https://support.system76.com"
BUG_REPORT_URL="https://github.com/pop-os/pop/issues"
PRIVACY_POLICY_URL="https://system76.com/privacy"
VERSION_CODENAME=hirsute
UBUNTU_CODENAME=hirsute
LOGO=distributor-logo-pop-os

Issue/Bug Description: Occasionally, when using my Dell Latitude 7400 laptop, the mouse cursor will start moving with momentum; that is, I'll stop moving my finger when swiping across the touchpad, and the cursor will continue moving for a few fractions of a second, gradually slowing to a stop. Scrolling via touchpad is affected in the same way.

Steps to reproduce: No known cause; it seems to happen at random.

Expected behavior: When I stop moving my finger(s) on the touchpad, the cursor / scrolling should stop (almost?) immediately.

Other Notes: A reboot fixes the issue, at least temporarily. I have not yet tested whether the momentum carries over to a physical mouse.

sudo dmidecode -t 1,2:

Handle 0x0001, DMI type 1, 27 bytes
System Information
    Manufacturer: Dell Inc.
    Product Name: Latitude 7400
    Version: Not Specified
    Serial Number: <REDACTED>
    UUID: <REDACTED>
    Wake-up Type: Power Switch
    SKU Number: 08E1
    Family: Latitude

Handle 0x0002, DMI type 2, 15 bytes
Base Board Information
    Manufacturer: Dell Inc.
    Product Name: 07WDVW
    Version: A01
    Serial Number: <REDACTED>
    Asset Tag: Not Specified
    Features:
        Board is a hosting board
        Board is replaceable
    Location In Chassis: Not Specified
    Chassis Handle: 0x0003
    Type: Motherboard
    Contained Object Handles: 0

sudo i2cdetect -l:

i2c-3   i2c         i915 gmbus dpc                      I2C adapter
i2c-10  i2c         AUX B/DDI B/PHY B                   I2C adapter
i2c-1   i2c         Synopsys DesignWare I2C adapter     I2C adapter
i2c-8   i2c         Synopsys DesignWare I2C adapter     I2C adapter
i2c-6   i2c         Synopsys DesignWare I2C adapter     I2C adapter
i2c-4   i2c         i915 gmbus misc                     I2C adapter
i2c-11  i2c         AUX C/DDI C/PHY C                   I2C adapter
i2c-2   i2c         i915 gmbus dpb                      I2C adapter
i2c-0   smbus       SMBus I801 adapter at efa0          SMBus adapter
i2c-9   i2c         AUX A/DDI A/PHY A                   I2C adapter
i2c-7   i2c         Synopsys DesignWare I2C adapter     I2C adapter
i2c-5   i2c         i915 gmbus dpd                      I2C adapter

sudo dmesg | grep -i mouse:

[    0.741907] mousedev: PS/2 mouse device common for all mice
[    1.280041] input: DELL08E1:00 06CB:CD97 Mouse as /devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-6/i2c-DELL08E1:00/0018:06CB:CD97.0001/input/input6
[    1.280347] hid-generic 0018:06CB:CD97.0001: input,hidraw0: I2C HID v1.00 Mouse [DELL08E1:00 06CB:CD97] on i2c-DELL08E1:00
[    1.775746] input: PS/2 Generic Mouse as /devices/platform/i8042/serio1/input/input5
[    9.856701] input: DELL08E1:00 06CB:CD97 Mouse as /devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-6/i2c-DELL08E1:00/0018:06CB:CD97.0001/input/input14
[    9.858612] hid-multitouch 0018:06CB:CD97.0001: input,hidraw0: I2C HID v1.00 Mouse [DELL08E1:00 06CB:CD97] on i2c-DELL08E1:00

Let me know if you need any more information.

xerohackcom commented 2 years ago

Fixing Mouse Acceleration With Settings

You can try this solution if not tried already:

Fixing xinput

If you still have issues, especially if you use other hardware mouse, then you can try settings via xinput. xinput mouse speed decrease

You can apply the above xinput settings to your start using: startup application > add > enter xinput command

I hope this helps.

EDIT: I tested Dell Latitude 7400 14" right now and the mouse speeds work fine for me. Try with the solutions and also check any application interfering with mouse inputs, such as autoclicker apps etc..

unilock commented 2 years ago

@xerohackcom The issue isn't with the mouse/touchpad speed; I can adjust that just fine. The problem is that, sometimes, the cursor will slide a bit past where I move it.

Think of the cursor as a shopping cart, and the screen as a parking lot. When I push the shopping cart, it doesn't stop immediately when I let go; it keeps moving in the direction I pushed it until the friction of the asphalt stops the wheels from turning. The cursor does the same; when I stop moving my finger on the touchpad, the cursor continues moving in the direction I moved my finger, until some invisible force of friction slows it to a halt. Ideally, the cursor should stop almost immediately when I stop moving my finger, rather than sliding about.

I'd add a video of the issue, but it happens so sporadically that it's rather hard to capture. Sometimes it stops after a few minutes, too. It's a conundrum.

xerohackcom commented 2 years ago

@unilock

Thanks for the input. I think I understand what your issue might be!

Anyway, without wasting your time, here's the solutions that worked for everyone having this same issue:

Solutions : Perform the first two solutions from here: https://askubuntu.com/questions/894679/ubuntu-touchpad-issues-mouse-pointer-jumps-around

Your can read more about this bug on Ubuntu: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-synaptics/+bug/1574667 but it's kind of long and boring bug report. Since Pop!_OS is based on Ubuntu, I can see guess bug being the same one.

If this works for you, please close the issue or else we'll wait for your inputs :)

unilock commented 2 years ago

@xerohackcom Unfortunately, I don't believe that solution / bug report are relevant to my issue. My mouse cursor doesn't jump to the bottom corner of the screen; rather, it moves in the direction I want it to, but it then slides further than intended, like an ice cube being pushed around a plate.

Anyway, I've recently replaced my Latitude with a Thinkpad, so I can no longer test nor potentially record this issue. Here's hoping I don't have the same problem on my new laptop.

If that does turn out to be the case, or someone else runs into this same problem, I'll reopen the issue.

Thanks for the help!

unilock commented 2 years ago

I've recently switched back to my Latitude due to my ThinkPad exploding.

At last, I've managed to record the issue. Since I've started using my Latitude again, it's only happened once, about a month ago. Nevertheless, the video can be found here (excuse the crude recording): https://mega.nz/file/lxdgTLIT#Nb07sAA84Suc9yV-0WnXPVZ5wk9VpaiwnVw1GKPJESg

The issue had not occurred on my ThinkPad during the few months I was using it.