Two-finger scroll on touchpad not working as expected

Asked by Andrew Constantinescu

Hello,
My two-finger scroll on my touchpad skips and jumps quite frequently. I am still trying to determine the root cause of the issue and would appreciate help in identifying if this is a driver issue or somewhere else. Here is what I know so far:

cat /proc/bus/input/devices
I: Bus=0018 Vendor=04f3 Product=311c Version=0100
N: Name="DLL0945:00 04F3:311C Touchpad"
P: Phys=i2c-DLL0945:00
S: Sysfs=/devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-2/i2c-DLL0945:00/0018:04F3:311C.0001/input/input39
U: Uniq=
H: Handlers=mouse1 event16
B: PROP=5
B: EV=1b
B: KEY=e520 10000 0 0 0 0
B: ABS=2e0800000000003
B: MSC=20

The touchpad was initially using libinput drivers but I also installed synaptics and tried that but the issue still persists.
grep -i "Using input driver" ~/.local/share/xorg/Xorg.0.log
[ 36.178] (II) Using input driver 'libinput' for 'Video Bus'
[ 36.181] (II) Using input driver 'libinput' for 'Video Bus'
[ 36.183] (II) Using input driver 'libinput' for 'Power Button'
[ 36.186] (II) Using input driver 'libinput' for 'Logitech Wireless Keyboard PID:4023'
[ 36.190] (II) Using input driver 'libinput' for 'Logitech Wireless Mouse'
[ 36.194] (II) Using input driver 'libinput' for 'Logitech M510'
[ 36.199] (II) Using input driver 'libinput' for 'Integrated_Webcam_HD: Integrate'
[ 36.201] (II) Using input driver 'libinput' for 'Integrated_Webcam_HD: Integrate'
[ 36.203] (II) Using input driver 'libinput' for 'DLL0945:00 04F3:311C Mouse'
[ 36.207] (II) Using input driver 'synaptics' for 'DLL0945:00 04F3:311C Touchpad'
[ 36.211] (II) Using input driver 'libinput' for 'Intel HID events'
[ 36.212] (II) Using input driver 'libinput' for 'Intel HID 5 button array'
[ 36.214] (II) Using input driver 'libinput' for 'Dell Privacy Driver'
[ 36.216] (II) Using input driver 'libinput' for 'Dell WMI hotkeys'
[ 36.219] (II) Using input driver 'libinput' for 'AT Translated Set 2 keyboard'
[ 36.221] (II) Using input driver 'libinput' for 'PS/2 Generic Mouse'
[ 36.274] (II) Using input driver 'libinput' for 'Logitech Wireless Keyboard PID:4023'

I have also a logfile from evtest for this device. I will attach if it gives me the option once I post the question.

Question information

Language:
English Edit question
Status:
Solved
For:
Ubuntu xserver-xorg-input-synaptics Edit question
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Solved by:
actionparsnip
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Best actionparsnip (andrew-woodhead666) said :
#1
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Andrew Constantinescu (aconstantinescu) said :
#2
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dfgfh (fghg45) said :
#3

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