Solution:
Ignore the talk of "/etc/X11/xorg.conf.d/" - if I put a file in there, my USB keyboard fails to start, so I can't type anything.
Instead, add this to /etc/X11/xorg.conf:
### START FILE SNIPPET ### 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 9" Option "EmulateWheel" "true" Option "EmulateWheelButton" "9" Option "ZAxisMapping" "4 5" Option "XAxisMapping" "6 7" Option "Emulate3Buttons" "false" EndSection ### END FILE SNIPPET ###
Restart X (log out and back in, or reboot), and all should be well.
Solution:
Ignore the talk of "/etc/X11/ xorg.conf. d/" - if I put a file in there, my USB keyboard fails to start, so I can't type anything.
Instead, add this to /etc/X11/xorg.conf:
### START FILE SNIPPET ###
MatchProduct "Logitech USB Trackball"
MatchIsPointer "on"
MatchDevicePat h "/dev/input/event*" tton" "9"
Section "InputClass"
Identifier "Marble Mouse"
Driver "evdev"
Option "ButtonMapping" "1 8 3 4 5 6 7 2 9"
Option "EmulateWheel" "true"
Option "EmulateWheelBu
Option "ZAxisMapping" "4 5"
Option "XAxisMapping" "6 7"
Option "Emulate3Buttons" "false"
EndSection
### END FILE SNIPPET ###
Restart X (log out and back in, or reboot), and all should be well.