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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 - Add DPI information for MS Arc Touch Mouse"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90540">90540</a>
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<th>Summary</th>
<td>Add DPI information for MS Arc Touch Mouse
</td>
</tr>
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<th>Product</th>
<td>systemd
</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
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<th>Status</th>
<td>NEW
</td>
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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>general
</td>
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<th>Assignee</th>
<td>systemd-bugs@lists.freedesktop.org
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<th>Reporter</th>
<td>bugzilla@hadess.net
</td>
</tr>
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<th>QA Contact</th>
<td>systemd-bugs@lists.freedesktop.org
</td>
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<p>
<div>
<pre>$ sudo ./mouse-dpi-tool /dev/input/event17
Mouse Arc Touch Mouse SE on /dev/input/event17
Move the device 250mm/10in or more along the x-axis.
Pause 3 seconds before movement to reset, Ctrl+C to exit.
Covered distance in device units: 11345 at frequency infHz Hz\^C -
Estimated sampling frequency: -2147483648Hz
To calculate resolution, measure physical distance covered
and look up the matching resolution in the table below
720mm 28.36in 400dpi
480mm 18.91in 600dpi
360mm 14.18in 800dpi
288mm 11.35in 1000dpi
240mm 9.45in 1200dpi
205mm 8.10in 1400dpi
180mm 7.09in 1600dpi
160mm 6.30in 1800dpi
144mm 5.67in 2000dpi
130mm 5.16in 2200dpi
120mm 4.73in 2400dpi
If your resolution is not in the list, calculate it with:
resolution=11345/inches, or
resolution=11345 * 25.4/mm
Entry for hwdb match (replace XXX with the resolution in DPI):
mouse:bluetooth:v045ep07f3:name:Arc Touch Mouse SE:
MOUSE_DPI=XXX@-2147483648
The estimated frequency is completely out of whack, but the USB dongley version
of the mouse is advertised as 1000dpi:
<a href="http://www.cnet.com/products/microsoft-arc-touch-mouse-black-series/specs/">http://www.cnet.com/products/microsoft-arc-touch-mouse-black-series/specs/</a></pre>
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