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My external mouse scrolls very slow (it's a MX Anywhere 2) but the scrolling of my internal touchpad is absolutely fine (for me). Therefore I want to change the scroll speed of my external mouse only which means that imwheel is not an alternative for me. I looked a bit further and found the following post (Increase mouse wheel scroll speed) with the following solution

libinput seems to be included with Wily Werewolf (15.10) where you need to install the package xserver-xorg-input-libinput. After you installed libinput with

$ sudo apt-get install xserver-xorg-input-libinput it should be used for every input after you restarted the Xorg (logout would be sufficient). Now that you are using libinput you are able to adjust the settings of your mouse. You can find a full tutorial in the file /lib/udev/hwdb.d/70-mouse.hwdb. Let me cover here only the basics.

The following steps are need to be done as root. Because of that I am friendliy reminding you that everything you do you need to take responibility.

First get the vendor id and the product id using lsusb. Here with a MX 518 Logitech Mouse as example. If you have the following line in the output of lsusb.

Bus 005 Device 002: ID 046d:c051 Logitech, Inc. G3 (MX518) Optical Mouse The is 046d and the is c051.

Then create a File that looks like the following with gksudo gedit /etc/udev/hwdb.d/71-mouse-local.hwdb

mouse:usb:vp:name:*: MOUSE_WHEEL_CLICK_ANGLE=?? For example this file for the Logitech MX 518 example above:

mouse:usb:v046dpc051:name:*: MOUSE_WHEEL_CLICK_ANGLE=30 This file sets the mouse wheel click angle to 30° (default is usually 15). To use this setting, update the hwdb with the following commands:

udevadm hwdb --update udevadm trigger /dev/input/event${id} One can figure out the ${id} using xinput (look out for the id of your mouse) and then run xinput list-props ${xinput_id}.

For some reason that does not affect my scrolling at all. Does anybody have an idea how to fix it?

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