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            <b><a class="bz_bug_link 
          bz_status_ASSIGNED "
   title="ASSIGNED - enable 2 finger right click on non-apple clickpads"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=90170#c21">Comment # 21</a>
              on <a class="bz_bug_link 
          bz_status_ASSIGNED "
   title="ASSIGNED - enable 2 finger right click on non-apple clickpads"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=90170">bug 90170</a>
              from <span class="vcard"><a class="email" href="mailto:peter.hutterer@who-t.net" title="Peter Hutterer <peter.hutterer@who-t.net>"> <span class="fn">Peter Hutterer</span></a>
</span></b>
        <pre>$ udevadm hwdb --test="libinput:name:SynPS/2 Synaptics
TouchPad:dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd09/11/2014:svnNotebook:pnW740SU:pvrNotApplicable:rvnNotebook:rnW740SU:rvrNotApplicable:cvnNotebook:ct9:cvrN/A:"
LIBINPUT_MODEL_SYSTEM76_CLEVO=1

The dmi string is the one from your udevadm test output. So two options here:
either your udev rule or hwdb file isn't picked up correctly, or they didn't
get picked up. The output has the 90-libinput-model-quirks.rules in it so it's
down to the hwdb file. Check if it's installed correctly, then this as root
please:
$ udevadm hwdb --update

the hwdb --test command above tells you if the hwdb is doing the right thing,
once it is udevadm-info should work, then libinput should work too.</pre>
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