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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 trackpoint scrolling is too slow and ignores LIBINPUT_ATTR_TRACKPOINT_RANGE"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106648">106648</a>
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<th>Summary</th>
<td>libinput trackpoint scrolling is too slow and ignores LIBINPUT_ATTR_TRACKPOINT_RANGE
</td>
</tr>
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<th>Product</th>
<td>Wayland
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>Other
</td>
</tr>
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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>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>libinput
</td>
</tr>
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<th>Assignee</th>
<td>wayland-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>hyperair@gmail.com
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=139757" name="attach_139757" title="Patch to use accelerated deltas for scrolling">attachment 139757</a> <a href="attachment.cgi?id=139757&action=edit" title="Patch to use accelerated deltas for scrolling">[details]</a></span> <a href='page.cgi?id=splinter.html&bug=106648&attachment=139757'>[review]</a>
Patch to use accelerated deltas for scrolling
This is a followup from
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - libinput 1.10 trackpoint speed limit is too low"
href="show_bug.cgi?id=106506#c12">https://bugs.freedesktop.org/show_bug.cgi?id=106506#c12</a>:
Scrolling on my trackpoint (Lite-On Technology Corp. Thinkpad USB Keyboard with
TrackPoint, with usb-id: 17ef:6009) is too slow and does not take
LIBINPUT_ATTR_TRACKPOINT_RANGE into consideration, leading to a jarring
mismatch in scrolling vs movement speed.
A solution I've found to have worked for me in Chrome Beta and Evince is to use
accelerated deltas for scrolling.
Here are the versions of the packages I'm using in Ubuntu.
google-chrome-beta:
Installed: 67.0.3396.48-1
Candidate: 67.0.3396.48-1
Version table:
*** 67.0.3396.48-1 500
500 <a href="http://dl.google.com/linux/chrome/deb">http://dl.google.com/linux/chrome/deb</a> stable/main amd64 Packages
100 /var/lib/dpkg/status
libgtk-3-0:
Installed: 3.22.30-1ubuntu1
Candidate: 3.22.30-1ubuntu1
Version table:
*** 3.22.30-1ubuntu1 500
500 <a href="http://sg.archive.ubuntu.com/ubuntu">http://sg.archive.ubuntu.com/ubuntu</a> bionic/main amd64 Packages
100 /var/lib/dpkg/status
evince:
Installed: 3.28.2-1
Candidate: 3.28.2-1
Version table:
*** 3.28.2-1 500
500 <a href="http://sg.archive.ubuntu.com/ubuntu">http://sg.archive.ubuntu.com/ubuntu</a> bionic/main amd64 Packages
100 /var/lib/dpkg/status</pre>
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</p>
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