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<?xml version="1.0" encoding="utf-8"?>
<page xmlns="http://projectmallard.org/1.0/" xmlns:its="http://www.w3.org/2005/11/its" type="topic" style="question" id="wacom-tablet-unknown" xml:lang="cs">
<info>
<link type="guide" xref="wacom"/>
<desc>Tablets need to be known to GNOME to initialize the right capabilities.</desc>
<credit type="author">
<name>Peter Hutterer</name>
<email>peter.hutterer@redhat.com</email>
</credit>
<include xmlns="http://www.w3.org/2001/XInclude" href="legal.xml"/>
<mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">
<mal:name>Adam Matoušek</mal:name>
<mal:email>adamatousek@gmail.com</mal:email>
<mal:years>2012</mal:years>
</mal:credit>
<mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">
<mal:name>Marek Černocký</mal:name>
<mal:email>marek@manet.cz</mal:email>
<mal:years>2014, 2015</mal:years>
</mal:credit>
</info>
<title>Why is my tablet unknown?</title>
<p>
For GNOME to initialize a tablet with the correct capabilities such as
pressure, tilt, mapable buttons, etc. it needs to first know which
capabilities are available.
This information is not provided by the devices but resides in a
static device database provided by the
<link href="http://github.com/linuxwacom/libwacom">libwacom library</link>.
Devices must be individually added to this database and thus
may not yet be available in the version of libwacom provided by
your distribution.
</p>
<p>
If a tablet is not supported by libwacom, GNOME cannot know which
capabilities are available. GNOME then defaults to assuming the
tablet is built into one of the outputs (the built-in one if available)
and it has no external buttons. The pen (stylus) tool defaults to a
standard two-button tool. This usually has little effect on the
functionality of the tablet but it does limit the configuration
of the tablet.
</p>
<p>
For instructions on how to add a device please see the instructions
in the <link href="http://github.com/linuxwacom/libwacom">libwacom repository</link>.
</p>
</page>
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