I find I can’t use the mouse wheel in debian these days, and someone has the same problem. Now I find a way to solve it , just to share, and hope it could be helpful.
1.find the configuration file /etc/X11/xorg.conf
2.find the context and modify it as follows:
Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
Option "CorePointer"
Option "Device" "/dev/input/mice"
Option "Protocol" "ImPS/2"
Option "Emulate3Buttons" "true"
Option "ZAxisMapping" "4 5"
EndSection
Two points has been modified:
1.PS/2 modified ImPS/2
2.add new line: Option "ZAxisMapping" "4 5"
then log off, log on!
Enjoy it !
