ThinkPad E585 choppy and not smooth at all
Summary
After installing an additional 8GB of RAM and a spare SSD to my ThinkPad E585, I decided to finally install a Linux distribution and use it as my daily driver from now on. Though I was surprised to see that the touchpad didn't work as intended. It feels unnatural and looks as if it skips frames as it moves. I wouldn't use the word "jumpy" as the behavior is what I believe is called "choppy". The trackpoint also shows the same behaviour on Linux, while they both work smoothly and show no signs of skipping or choppiness under Windows 10.
Steps to reproduce
Does not need any additional steps as the touchpad does not work as intended. Tap was also enabled by default.
libinput version you encountered the bug on
1.14.1 as reported by the following command:
libinput --version
Came installed with Pop!_OS 19.10
Edit: Also tested on 1.14.901.
Hardware information:
ThinkPad E585 (20KV000ATX)
Other log output:
-
libinput record
output: touchpad.yaml trackpoint.yaml -
libinput debug-events --verbose
output: debug-events.log -
touchpad-edge-detector 98x65 /dev/input/event6
output: touchpad-edge-detector.txt -
udevadm info
output: udevadminfo-trackpad.txt udevadminfo-trackpoint.txt -
libinput quirks list /dev/input/event6
output:
ModelSynapticsSerialTouchpad=1
AttrThumbPressureThreshold=100
-
libinput measure fuzz
output:
Using SynPS/2 Synaptics TouchPad: /dev/input/event6
Checking udev property... not set
Checking axes... not set
-
cat /sys/class/dmi/id/modalias
output: modalias.txt