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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 - Wacom tablet produces wiggly bent lines when using libinput driver."
href="https://bugs.freedesktop.org/show_bug.cgi?id=99961">99961</a>
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<th>Summary</th>
<td>Wacom tablet produces wiggly bent lines when using libinput driver.
</td>
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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>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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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>
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<th>Assignee</th>
<td>wayland-bugs@lists.freedesktop.org
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<th>Reporter</th>
<td>raghavendr.raghu@gmail.com
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<p>
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<pre>Created <span class=""><a href="attachment.cgi?id=129909" name="attach_129909" title="jpg showing lines drawn with both driver">attachment 129909</a> <a href="attachment.cgi?id=129909&action=edit" title="jpg showing lines drawn with both driver">[details]</a></span>
jpg showing lines drawn with both driver
The lines drawn with wacom pen(Wacom Intuos4 6x9) when libinput is used as
driver are severely bent and wiggly. The same tablet produces smooth result
when xf86-input-wacom is used as driver. In future when libinput becomes the
default driver (if it is planned ) this can cause sever problem for artists
such as myself who use linux.
My uninformed guess is that the averaging of the input coordinates obtained
from wacom is messed up. As a workaround (I don't know if this is correct thing
to do, if no please provide a different work around) I commented the lines:
Section "InputClass"
Identifier "libinput touchscreen catchall"
MatchIsTouchscreen "on"
MatchDevicePath "/dev/input/event*"
Driver "libinput"
EndSection
In the file /usr/share/X11/xorg.conf.d/40-libinput.conf so that it uses the
wacom driver provided by xf86-input-wacom (0.34.0-1)
Let me know if i can provide any logs or any other information that will be
required to solve this issue.
I am using arch linux with libinput version (while reporting this bug)- 1.6.2-1
My tablet device is is Wacom Intuos4 6x9
I am using krita(3.1 built from git) to test the tablet. I am also attaching a
jpg showing lines drawn with both drivers for a comparison. the sections marked
with pink are bent sections in the libinput version
Let me know if you want any more details or logs
thank you</pre>
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