Maybe see if tweaking "/usr/share/libinput/50-system-lenovo.quirks"
helps?
Something like [0] but change the matching to E15.
[0]
https://gitlab.freedesktop.org/libinput/libinput/-/commit/5abe45cd497557c6b3c3cdd4d40420f21416160d
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** Attachment added: "Very fast 2 finger scroll"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2061376/+attachment/5774917/+files/libinput_No_Bounce.txt
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** Attachment added: "Normal scroll with bounce on finger lift"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2061376/+attachment/5774918/+files/libinput_Scroll_Bounce.txt
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The evtest output seems quite normal.
Can you please attach the output of `libinput debug-events`?
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Title:
Touchpad scroll bounces back 22.04.4
I can replicate it in Noble 24.04 Vim, Text editor and Firefox. Chrome
smoothens it out but still visible. LibreOffice Writer is slow and janky
in normal scrolling so I didn't see visually it there (this bad
scrolling in Writer would be an own bug itself). Firefox is most
prominent as touchpad
apport information
** Tags added: apport-collected noble wayland-session
** Description changed:
When scrolling anywhere using 2 fingers the scroll bounces back if
fingers are lifted up from touchpad. Soft finger point muscles have some
flex to them and I strongly believe this causes the
Please run `apport-collect 2061376` to attach logs here.
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Title:
Touchpad scroll bounces back 22.04.4
To manage notifications about this bug go
Also, does different browsers have the same issue?
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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Title:
Touchpad scroll
** Changed in: linux (Ubuntu)
Assignee: Anthony Wong (anthonywong) => Kai-Heng Feng (kaihengfeng)
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Title:
Touchpad scroll bounces back
I think this affects all laptop touchpads.
I have Lenovo Thinkpad X1 Yoga Gen 5 and Lenovo Thinkpad E15 Gen 2 which both
have this undesired scroll effect.
Videos of what is happening:
1st video of finger movements and screen: https://youtu.be/qyhPLnkcWC0
2nd video of screen recording:
** Summary changed:
- Touchpad scroll bounces back 22.04.4 Thinkpad X1 Yoga Gen5
+ Touchpad scroll bounces back 22.04.4
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Title:
Touchpad scroll
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Anthony Wong (anthonywong)
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Title:
Touchpad scroll bounces back 22.04.4 Thinkpad X1
** Attachment added: "evtest /dev/input/event5"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2061376/+attachment/5765606/+files/evtest_event5.log
** Description changed:
When scrolling anywhere using 2 fingers the scroll bounces back if
fingers are lifted up from touchpad. Soft
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