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Emulating 3 buttons with a 2 button mouse on the GNOME desktop

asked 2017-04-05 03:01:33 -0500

I recently bought a Logitech TrackMan Marble that has 4 buttons: Big Left and Big Right configured as button 1 & 2, and Small Left and Small Right configured as Browser back/forward.

I remember X11/ had an Emulate3Buttons configuration option, but I can’t find anything similar for Wayland. I also remember a GSettings value under /org/gnome/settings-daemon/peripherals/mouse, but it’s no longer there (or my memory is failing me).

Is there a way to do it on a Fedora 25 box (standard GNOME desktop with no tweaks).

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I'm not sure it's possible in Wayland, yet. libinput seems like the solution we would want -- it provides a method to emulate middle mouse click in both Xorg and Wayland, but is hosted on the Wayland project subdomain... However, there apparently isn't a standard configuration file for libinput in Wayland: "The configurable options depend on the progress of your desktop environment's support for them..." And since I can't find anything about this in GNOME Tweak Tool or dconf editor, I'm thinking it's just not implemented yet.

terrycloth gravatar imageterrycloth ( 2017-04-06 23:57:57 -0500 )edit

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answered 2017-04-06 23:00:05 -0500

terrycloth gravatar image

updated 2017-04-06 23:21:26 -0500

There's a GNOME Help page which says "If you don't have a middle mouse button, you can press the left and right mouse buttons at the same time to middle-click."

You have any luck with this? It doesn't work for me, but my mouse does have a middle button, so.

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Yes, it started working after I upgraded to Fedora 26 Alpha!

GergelyPolonkai gravatar imageGergelyPolonkai ( 2017-04-13 02:57:47 -0500 )edit

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Asked: 2017-04-05 03:01:33 -0500

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Last updated: Apr 06 '17