Ubuntu 20.04 mouse scroll wheel speed

I had a very slow scroll speed until I found that.

Install and run

1. You have to install imwhell with :
   

   sudo apt install imwheel
   

2. And download this bash script on http://www.nicknorton.net (thanks to him)
   You can type, as @victoor say in comments :

   You can just do bash <(curl -s http://www.nicknorton.net/mousewheel.sh) instead of copy the script manually and changing permissions. :)
   

   #!/bin/bash
   # Version 0.1 Tuesday, 07 May 2013
   # Comments and complaints http://www.nicknorton.net
   # GUI for mouse wheel speed using imwheel in Gnome
   # imwheel needs to be installed for this script to work
   # sudo apt-get install imwheel
   # Pretty much hard wired to only use a mouse with
   # left, right and wheel in the middle.
   # If you have a mouse with complications or special needs,
   # use the command xev to find what your wheel does.
   #
   ### see if imwheel config exists, if not create it ###
   if [ ! -f ~/.imwheelrc ]
   then
   cat >~/.imwheelrc<<EOF
   ".*"
   None,      Up,   Button4, 1
   None,      Down, Button5, 1
   Control_L, Up,   Control_L|Button4
   Control_L, Down, Control_L|Button5
   Shift_L,   Up,   Shift_L|Button4
   Shift_L,   Down, Shift_L|Button5
   EOF
   fi
   ##########################################################
   CURRENT_VALUE=$(awk -F 'Button4,' '{print $2}' ~/.imwheelrc)
   NEW_VALUE=$(zenity --scale --window-icon=info --ok-label=Apply --title="Wheelies" --text "Mouse wheel speed:" --min-value=1 --max-value=100 --value="$CURRENT_VALUE" --step 1)
   if [ "$NEW_VALUE" == "" ];
   then exit 0
   fi
   sed -i "s/\($TARGET_KEY *Button4, *\).*/\1$NEW_VALUE/" ~/.imwheelrc # find the string Button4, and write new value.
   sed -i "s/\($TARGET_KEY *Button5, *\).*/\1$NEW_VALUE/" ~/.imwheelrc # find the string Button5, and write new value.
   cat ~/.imwheelrc
   imwheel -kill
   

3. Then set up the .sh file to executable with :
   

   chmod +x mousewheel.sh
   

4. And then run script with :
   

   ./mousewheel.sh
   

5. And set your mouse wheel speed in the popup by clicking on apply button. (my setting is 7) Re-run script for change.

6. Finally add imwheel in ubuntu startup application.

If you have troubleshooting with previous and next mouse buttons :

• Add -b "4 5" to imwhell :

imwheel -b "4 5"

You can found others details here for setting speed by app :

Fixing Mouse Wheel on Chrome in Ubuntu 18.04 Virtualbox / VMWare

Dan Voyce ・ Jul 23 '19 ・ 2 min read

#ubuntu #scrolling #virtualbox #mousewheel

Or in the man page : man imwheel

Image : Pexels

Sorry, it's my first post.
Have a nice day !