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<base href="https://bugs.freedesktop.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - libinput has delayed mouse pointer movement on Lenovo X1v5"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103619">103619</a>
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<th>Summary</th>
<td>libinput has delayed mouse pointer movement on Lenovo X1v5
</td>
</tr>
<tr>
<th>Product</th>
<td>Wayland
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>Other
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>libinput
</td>
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<th>Assignee</th>
<td>wayland-bugs@lists.freedesktop.org
</td>
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<th>Reporter</th>
<td>pkern@debian.org
</td>
</tr></table>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=135301" name="attach_135301" title="up/down scrolling lag">attachment 135301</a> <a href="attachment.cgi?id=135301&action=edit" title="up/down scrolling lag">[details]</a></span>
up/down scrolling lag
On a Lenovo X1v5 (and to some degree also on X1v4, but that'd be a separate
bug) initial touchpad movement is delayed by a few ms. You move the finger and
the mouse cursor lags behind. It feels like the cursor is sticky. Two dumps
attached for up/down and left/right movements.
I also have a problem with overshoot, i.e. it feels very hard to precisely hit
the target and I always need to correct down. Unfortunately after a while the
brain adjusts. The dump tries to show how in the last few ms the pointer goes a
bit further and then I need to adjust for that.
P: /devices/platform/i8042/serio1/input/input5/event5
N: input/event5
E: DEVNAME=/dev/input/event5
E: DEVPATH=/devices/platform/i8042/serio1/input/input5/event5
E: ID_BUS=i8042
E: ID_INPUT=1
E: ID_INPUT_HEIGHT_MM=53
E: ID_INPUT_TOUCHPAD=1
E: ID_INPUT_TOUCHPAD_INTEGRATION=internal
E: ID_INPUT_WIDTH_MM=98
E: LIBINPUT_DEVICE_GROUP=11/2/7/1b1:isa0060/serio1
E: LIBINPUT_MODEL_SYNAPTICS_SERIAL_TOUCHPAD=1
E: MAJOR=13
E: MINOR=69
E: SUBSYSTEM=input
E: USEC_INITIALIZED=40887057
Model: Lenovo N1MET37W / X1 Carbon v5
dmi:bvnLENOVO:bvrN1MET37W(1.22):bd07/04/2017:svnLENOVO:pn20HQS0EG1J:pvrThinkPadX1Carbon5th:rvnLENOVO:rn20HQS0EG1J:rvrNotDefined:cvnLENOVO:ct10:cvrNone:
Physical dimensions: 56mm(height)x100mm(width)</pre>
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