libinput issueshttps://gitlab.freedesktop.org/libinput/libinput/-/issues2024-01-09T22:35:18Zhttps://gitlab.freedesktop.org/libinput/libinput/-/issues/959Touchpad on Dell XPS 9380 overly sensitive (DELL08AF:00 06CB:76AF Touchpad)2024-01-09T22:35:18ZFritz WeberingTouchpad on Dell XPS 9380 overly sensitive (DELL08AF:00 06CB:76AF Touchpad)## Summary
The tap threshold on the Dell touchpad in my XPS 9380 laptop is extremely low. Even the slightest glance with a finger or palm is enough to register as a tap, although you can barely feel it. Since my writsts rest to both sid...## Summary
The tap threshold on the Dell touchpad in my XPS 9380 laptop is extremely low. Even the slightest glance with a finger or palm is enough to register as a tap, although you can barely feel it. Since my writsts rest to both sides of the touchpad, my palms or the base of my thumbs will sometimes brush the pad when reaching for letters in the middle of the keyboard.
This makes typing hazardous while the mouse pointer is over a text field, because the input cursor can move at any time. But the worst case is when are thinking for a moment and then start a new sentence, because the "disable while typing" feature is not yet active before typing the first letter, and the Shift key causes you to select a whole block of text, which you then overwrite with the first capital letter of the sentence.
Is there any way to configure the tap threshold via i2c inside the touchpad device? Because according to `sudo libinput measure touchpad-pressure`, the device does not report pressure values to userspace.
## Steps to reproduce
Put your finger on the touchpad as lightly as possible in a glancing motion.
No way to reproduce without access to the hardware, I'm afraid.
Let me know if I can help somehow.
## Required information
- libinput version: 1.24.0
- hardware information: XPS 9380, DELL08AF:00 06CB:76AF Touchpad
- `libinput record` output: [record.txt](/uploads/823532bb02b39a1364ff5649bc2e0653/record.txt)
- `libinput debug-events --verbose` output: [events.txt](/uploads/5d7f934d72077bfcd4d7b83a3a0b70e8/events.txt)
Both `record.txt` and `events.txt` show the same sequence of events:
1. A very light glancing touch with the index finger (barely noticeable)
2. A more determined, forceful tap with the index finger (quick tap, bouncing back)
3. Deliberately pressing down with the index finger for a short duration (longer than a tap, not pressing the clicky button)
```
$ sudo libinput quirks list /dev/input/event10
ModelTouchpadVisibleMarker=1
AttrMscTimestamp=watch
```