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Short Question

Is there a way to adjust the mouse wheel scroll sensitivity in Fedora 18?

Long Question

I'm running Fedora 18, with the standard Gnome desktop. I use a Logitech M705 mouse with the free-scrolling mouse wheel, which I love. In windows, I'm able to configure how many lines to scroll per notch of the mouse wheel. In Fedora, though, there doesn't appear to be any analogous configuration option. The default is quite sensitive for this this mouse, scrolling approximately 3 lines per notch. Since the wheel is free-spinning, even small motions trigger several notches, making it hard to use in Fedora. Is there a way for me to reduce the sensitivity of the mouse wheel?

Windows Mouse Configuration Windows Mouse Configurtion

Fedora Mouse Configuration Fedora Mouse Configuration

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A solution can be edit or create xorg.conf in /etc/X11 with this lines

Section "InputClass"

Identifier "Wheel Emulation"
MatchIsPointer "on"
MatchProduct "TrackPoint"
Option "EmulateWheelButton" "2"
Option "EmulateWheel" "on"

save and restart X

references http://fedoraproject.org/wiki/Input_device_configuration#Example:_Wheel_Emulation_.28for_a_Trackpoint.29

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I tried this, but it had no noticeable effect. Clicking through to your source link and reading the description doesn't inspire me to anticipate any change in wheel behavior; this is a method for holding a button and then approximating a mouse wheel with a trackpoint. I don't need to emulate a wheel, because I already have one! Thanks for your suggestion, though. I wish the results were better. – Eric Grunzke Apr 5 '13 at 21:57
That is because this only turns the middle button on the trackpad into a scroll wheel. It does not effect the mouse scroll wheel. – Joshua Wilson Nov 11 '15 at 17:02

This answer is specific to Logitech devices with Unifying receiver, but you're mentioning one explicitely in your question.

Install solaar, a tool which can be used to pair devices with the unifying receiver, but also provides basic device configuration (and status information like battery level). Select the mouse, disable "Smooth Scrolling".

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I wrestled with this apparent bug too. If you dual boot with Windows, and use a Microsoft wireless mouse, and have a motherboard that is always powered you get the problem in Linux. Briefly, Windows messes with the mouse transceiver configuration so Linux sees the wheel as scrolling way too fast, which it is after running Windows. The workaround is to unplug and replug the mouse USB transceiver. Unplugging resets the transceiver and makes it work properly in Linux.

The general fix is to install resetmsmice. Since it's a Microsoft hardware-software issue, I would not count on a general Linux modification to fix it.

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