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My mouse scroll doesn't work at all. There are other questions regarding mouse scroll, but not appropriate in my context. It used to work fine in Windows XP.

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Can you confirm that you have the following section in your /etc/X11/xorg.conf file?

Section "InputDevice"

    # generated from default
    Identifier  "Mouse0"
    Driver      "mouse"
    Option      "Protocol" "auto"
    Option      "Device" "/dev/input/mice"
    Option      "Emulate3Buttons" "no"
    Option      "ZAxisMapping" "4 5"

The key line in that stanza is the ZAxisMappping. That specifies that you have a scroll wheel and stipulates that it's implemented as buttons 4 & 5. Which is mechanically how the wheel works. scrolling down, triggers a "button press" of 4. Whereas scrolling up triggers a "button press" of 5.

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I didn't find xorg.conf file. Should I create it and and paste the code provided by you. I will list the files in the section that you mentioned /etc/X11/ >>>>>>>>> app-defaults rgb.txt Xreset Xsession.d Xwrapper.config cursors X Xreset.d Xsession.options default-display-manager xinit Xresources XvMCConfig fonts xkb Xsession XvMCConfig.dpkg-new – Habi Nov 10 '13 at 11:51
@Habi - I think you can generate one if you don't have it using this command: sudo Xorg -configure. Then copy it to /etc/X11/xorg.conf. – slm Nov 10 '13 at 13:41
I get this message>>>>>>>>>>>> habi@habi-MS-7529:/etc/X11$ sudo Xorg -configure (EE) Fatal server error: (EE) Server is already active for display 0 If this server is no longer running, remove /tmp/.X0-lock and start again. (EE) (EE) Please consult the The X.Org Foundation support at wiki.x.org for help. (EE) – Habi Nov 10 '13 at 14:01
You can follow some of the steps here: askubuntu.com/questions/285571/…. You don't need to do the nvidia ones, would be my guess. – slm Nov 10 '13 at 14:25

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