Arch Linux

thangalin

Member

Registered: 2023-09-08

Posts: 10

Logitech TrackMan Marble Mouse Back Button

I have a Logitech TrackMan that, until recently, used to have its small right button trigger the "back" functionality in Firefox. This functionality no longer works. Here's an image snagged from the Ubuntu Community wiki:

The keyboard and mouse are routed through an IOGEAR 2-Port KVM switch. The values from xinput show:

$ xinput list
⎡ Virtual core pointer                    	id=2	[master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer              	id=4	[slave  pointer  (2)]
⎜   ↳ ATEN KVM V1.2.116                       	id=12	[slave  pointer  (2)]
⎣ Virtual core keyboard                   	id=3	[master keyboard (2)]
    ↳ Virtual core XTEST keyboard             	id=5	[slave  keyboard (3)]
    ↳ Video Bus                               	id=7	[slave  keyboard (3)]
    ↳ Power Button                            	id=6	[slave  keyboard (3)]
    ↳ Power Button                            	id=8	[slave  keyboard (3)]
    ↳ ATEN KVM V1.2.116                       	id=11	[slave  keyboard (3)]
    ↳ Unicomp Inc Unicomp R7_2_10x_Kbrd_v7_47 	id=13	[slave  keyboard (3)]
    ↳ Asus WMI hotkeys                        	id=9	[slave  keyboard (3)]
    ↳ Eee PC WMI hotkeys                      	id=10	[slave  keyboard (3)]

System:

$ uname -a
Linux hostname 6.9.3-arch1-1 #1 SMP PREEMPT_DYNAMIC Fri, 31 May 2024 15:14:45 +0000 x86_64 GNU/Linux
$ cat /etc/issue 
Antergos Linux \r (\l)
$ echo $XDG_SESSION_TYPE
x11

Using the KVM appears to hide the product name. So despite X11 having an input class set, I don't believe the configuration is being applied:

$ cat /etc/X11/xorg.conf.d/10-libinput.conf 
Section "InputClass"
  Identifier    "Marble Mouse"
  MatchProduct  "Logitech USB Trackball"
  Driver        "libinput"
  Option        "ScrollMethod"        "button"
  Option        "ScrollButton"        "9"
  Option        "MiddleEmulation"     "true"
  Option        "HorizontalScrolling" "false"
  Option        "ButtonMapping"       "1 2 3 4 5 6 7 9 8"
EndSection

Instead, the buttons are remapped as follows in the $HOME/.xessionrc file:

$ cat $HOME/.xsessionrc
# Enable click+hold small right mouse button for scrolling trackball.
xinput set-prop 12 "libinput Button Scrolling Button" 9

# Disable horizontal trackball scrolling.
xinput set-prop 12 "libinput Horizontal Scroll Enabled" 0

# Forward small left click; backward small right click.
xinput set-button-map 12 1 2 3 4 5 6 7 9 8

Testing the right-click shows button #8:

$ xinput test 12
button press   8 
button release 8 

Note: The trackball is used left-handed, so buttons 8 and 9 are swapped.

In Firefox, the about:config settings for mousebutton.4th.enabled and mousebutton.5th.enabled are set to false, although this setting appears to have no effect.

Any idea how I can reinstate a single click for button 9 in the image as the back functionality for Firefox, while maintaining the ability to scroll by pressing and holding that same button?

Thank you!

Last edited by thangalin (2024-06-08 19:28:34)