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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Handle abs ranges of [0, 0]"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=90107">90107</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Handle abs ranges of [0, 0]
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>Wayland
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Other
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>libinput
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>wayland-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>peter.hutterer@who-t.net
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Related to <a class="bz_bug_link 
          bz_status_ASSIGNED "
   title="ASSIGNED - "reject devices with a min == max axis range" causes my mouse to stop working"
   href="show_bug.cgi?id=90090">Bug 90090</a> but let's keep that bug the device-specific one.

The kernel allows a min==max abs range provided the values are 0. This
essentially means "we don't know", an example for a fix for such a device is
here:
<a href="https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6f1891d01956cad406d2af8ed2e9cef6108bfc">https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6f1891d01956cad406d2af8ed2e9cef6108bfc</a>

libinput should deal with those devices, especially where it doesn't actually
use the axis anyway. In the above case of a touchscreen - we don't use pressure
so we can just ignore a bad setting.

For x/y and the MT axes we should always require a valid range.</pre>
        </div>
      </p>
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