OK, bad news then... This appears to be a kernel/hardware bug unique to
your laptop. It's pretty rare but I have also seen it before on Lenovo
X230s (I think).
Next I suggest trying a live boot of Ubuntu 20.04:
https://releases.ubuntu.com/20.04/
or just trying newer kernels:
https://kernel.
Just checked, and the elliptic hysteresis feature (to remove grid-like
movement) is in libinput 1.10.2, so you should have the fix already.
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Title:
I can post a video which captures both my finger on the touchpad and the
mouse cursor, it's very visible.
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Title:
[Toshiba Portege R830] Grid-lik
new props.txt
** Attachment added: "props.txt"
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-synaptics/+bug/1886977/+attachment/5392244/+files/props.txt
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Hmm, that should not happen. Please run this again:
xinput list-props N > props.txt
** Changed in: xserver-xorg-input-synaptics (Ubuntu)
Status: Won't Fix => Incomplete
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https:/
new journal.txt
** Attachment added: "journal.txt"
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-synaptics/+bug/1886977/+attachment/5392243/+files/journal.txt
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I removed it and rebooted, but the problem persists.
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Title:
Grid-like cursor movement on touchpad
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The problem is that you are using the old driver where this bug was
never fixed... Please just uninstall that driver:
sudo apt remove xserver-xorg-input-synaptics
** Package changed: libinput (Ubuntu) => xserver-xorg-input-synaptics (Ubuntu)
** Changed in: xserver-xorg-input-synaptic
props.txt
** Attachment added: "props.txt"
https://bugs.launchpad.net/ubuntu/+source/libinput/+bug/1886977/+attachment/539/+files/props.txt
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journal.txt
** Attachment added: "journal.txt"
https://bugs.launchpad.net/ubuntu/+source/libinput/+bug/1886977/+attachment/5392220/+files/journal.txt
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When the problem is happening please run these commands:
journalctl -b0 > journal.txt
xinput list-props N > props.txt
where N is the ID of your touchpad according to 'libinput'.
Please then attach the two resulting text files to this bug.
** Changed in: libinput (Ubuntu)
Status: New
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