Touchpad jitter on ALPS touchpad
Summary
Using the touchpad to move the mouse pointer often (but not 100% of the time) produces exaggerated jitter, making selection of items/tabs very difficult
Steps to reproduce
Open a few windows such as firefox and start using the desktop. The pointer may be stable sometimes, and other times very unstable/jittery. Typically this manifests within the first couple of minutes of use, and 30-50% of mouse movements (especially precision such as text selection or even trying to hold the pointer still) seem affected worse.
libinput version you encountered the bug on
- Tested on elementary 4.15.0-36-generic libinput 1.10.4-1
- Still occurs after building latest from gitlab repo: commit 5fd8c7cd (HEAD -> master, tag: 1.12.2, origin/master, origin/HEAD)
- Also occurs on Ubuntu 18.10 live USB using standard vendor package libinput 1.12.1-1
Hardware information:
eeeeeeeeeeeeeeeeeeeeeee ---------------
eeeee eeeeeeeeeeee eeeee OS: elementary OS 5.0 Juno x86_64
eeee eeeee eee eeee Host: Latitude E7440 00
eeee eeee eee eeee Kernel: 4.15.0-36-generic
eee eee eee eee Uptime: 18 mins
eee eee eee eee Packages: 1765
ee eee eeee eeee Shell: bash 4.4.19
ee eee eeeee eeeeee Resolution: 1366x768
ee eee eeeee eeeee ee DE: Pantheon
eee eeee eeeeee eeeee eee WM: Mutter(Gala)
eee eeeeeeeeee eeeeee eee Terminal: io.elementary.t
eeeeeeeeeeeeeeeeeeeeeeee eeeee CPU: Intel i7-4600U (4) @ 3.300GHz
eeeeeeee eeeeeeeeeeee eeee GPU: Intel Haswell-ULT
eeeee eeeee Memory: 1375MiB / 7882MiB
Other log output:
- libinput debug debug.out
- libinput record file libnput.record.txt