--- /dev/null
+.. _clickpads_with_right_buttons:
+
+==============================================================================
+Clickpads with a fake right button
+==============================================================================
+
+libinput relies on the kernel to label :ref:`Clickpads <touchpads_buttons_clickpads>`
+with the ``INPUT_PROP_BUTTONPAD`` property so it can enable the correct
+:ref:`clickpad_softbuttons`. Clickpads are not expected to have a right button
+since the whole surface can be depressed.
+
+A common bug encountered with :ref:`Clickpads <touchpads_buttons_clickpads>`
+is that the device advertises a physical right button where no such button
+exists. This is usually a bug in the firmware of the device and causes the
+following warning to be emitted by libinput::
+
+ "<device name> clickpad advertising right button"
+
+The user-visible effect of this is usually negligible since these devices
+cannot actually trigger a right click and libinput's default behaviors for
+clickpads work as expected.
+
+However, we should nonetheless correct the device to get rid of this warning
+and avoid potential issues with future features. The :ref:`device-quirks`
+provide a simple way to disable the fake right button on the device. The
+following quirk disables the right button on the MyModel laptop from the
+MyVendor OEM::
+
+ [MyVendor MyModel Touchpad]
+ MatchName=Foo Bar Touchpad
+ MatchUdevtype=touchpad
+ MatchDMIModAlias=dmi:*svnMyVendor:pnMyModel:*
+ AttrEventCodeDisable=BTN_RIGHT
+
+The name of the device can be obtained using :ref:`libinput record <libinput-record>`,
+the modalias match is a shell-style glob against the value of ``/sys/class/dmi/id/modalias``.
+In most cases, matching should be against ``svn`` (system vendor) and one of
+``pn`` (product name) or ``pvr`` (product version), whichever provides a
+useful description of the individual laptop model. See the
+:ref:`device-quirks` documentation for details on testing local quirks.
+
+For reference, some example commits that add such a quirk are:
+
+ - `bf61ab9bb0694d0ac3d60a7f815779abfe4886e6 <https://gitlab.freedesktop.org/libinput/libinput/-/commit/bf61ab9bb0694d0ac3d60a7f815779abfe4886e6>`__
+ - `74fac6d040ac62048882dfb6f73da567ace6a6f5 <https://gitlab.freedesktop.org/libinput/libinput/-/commit/74fac6d040ac62048882dfb6f73da567ace6a6f5>`__
+ - `89cd0f990e3bee9906754d6ca8484ed5aa392249 <https://gitlab.freedesktop.org/libinput/libinput/-/commit/89cd0f990e3bee9906754d6ca8484ed5aa392249>`__
+