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Old 16th March 2017, 11:49 PM
marked83 Offline
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Join Date: Mar 2017
Location: Sacramento, CA
Posts: 1
Logitech Marble scroll in F25

I am trying to get the emulated scroll working with marble mouse in Fedora 25 with wayland.
Trying to follow advice from an older thread, http://forums.fedoraforum.org/showthread.php?p=1775987
but not getting it to work. I have tried adding a .conf file to /etc/X11/xorg.conf.d/ that looks like this:

Section "InputClass"
Identifier "Marble Mouse"
MatchProduct "Logitech USB Trackball"
Driver "libinput"
Option "ScrollMethod" "button"
Option "ScrollButton" "8"
Option "MiddleEmulation" "on"

libinput-list-devices does list it as "Logitech USB Trackball" but for middle emulation it just says "n/a" and scroll methods says "button"
libinput version is 1.6.3-3

Is this the right type of configuration file for wayland? Is there anyway to test properties on the fly with libinput like the old xinput methods?

Any tips would be greatly appreciated!
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Old 17th March 2017, 09:11 AM
Salamandra Offline
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Join Date: Sep 2004
Location: Spain
Posts: 330
Re: Logitech Marble scroll in F25

I use mate, no experience in Wayland. I use this configuration and it works for me.

I like the little left button to emulate scroll and the little right to emulate middle click. Big left button is left click, big right button is right click.

I add 50-marblemouse.conf to /etc/X11/xorg.conf.d/
with this content:
# Little left scroll, little right middle click
Section "InputClass"
Identifier "Marble Mouse"
MatchProduct "Logitech USB Trackball"
MatchIsPointer "on"
MatchDevicePath "/dev/input/event*"
Driver "evdev"
Option "ButtonMapping" "1 8 3 4 5 6 7 2 2"
Option "EmulateWheel" "true"
Option "EmulateWheelButton" "8"
Option "ZAxisMapping" "4 5"
Option "XAxisMapping" "6 7"
Option "Emulate3Buttons" "false"
Probably you will have to map the buttons in the proper way for you.

Good luck.
Linux User #365705

Last edited by Salamandra; 17th March 2017 at 09:20 AM.
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Old 17th March 2017, 01:46 PM
bobx001 Offline
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Join Date: Dec 2012
Location: santa barbara, CA
Posts: 339
Re: Logitech Marble scroll in F25

For next Xmas, if you're into trackballs, I recommend the Kensington Expert Mouse Trackball

the "ring" around the ball, is the scroller, works "sooooooo gooood" !

Ive been on Trackball since my days doing Desktop Publishing with big Macs. (say 1992 ?)
but I do switch to regular mice every once in a while for a couple of days to let the hand do something else.
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Old 18th March 2017, 08:56 AM
Wayne Offline
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Join Date: Aug 2009
Location: In a cardboard box
Posts: 2,040
Re: Logitech Marble scroll in F25

No idea about Wayland but in (K)Ubuntu 16.04 it didn't work either. I had to add the config to /etc/X11/xorg.conf instead.
I used to miss my wife but then my aim improved.
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f25, logitech, marble, scroll

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