Ubuntu – Mouse speed too fast – I can change it with xinput, but how can I make the change persistent

The way to set it is in terminal not xset m.

First, use xinput --list --short and write down your mouse ID. Mine is (8). Save it.

Next, in the terminal, type:

xinput --list-props yourMouseId

Press enter and find the Device Accel Constant Deceleration #. Mine is (270). Write it down, behind your mouses ID.

Now, in the terminal, type:

xinput --set-prop 8 270 7

If this is too slow, retype the command but lower the last #. Try 6 or 5 or 4 and down till you got the speed you like.

One last thing: If your mouse is too slow, try going into the settings of mouse and touchpad and use the speed slider there to your liking.

1. Open a terminal
2. Run the command: xinput --list --short

Logitech USB Optical Mouse id=10 [slave pointer (2)]

(this is a part of output you will see, I found the name of my mouse Logitech USB Optical Mouse)

3. Note the name of your device.
4. Set the constant deceleration for the device:

xinput --set-prop "Logitech USB Optical Mouse" "Device Accel Constant Deceleration" 5

You need to play with with number, here 5. Don't loose focus of your terminal because mouse speed may become either too fast or too slow. lower the number the faster it will be, similarly, higher the number slower it will be. For me 1 is too fast, and 100 is too slow.

5. To see the current settings for the device:

xinput --list-props "Logitech USB Optical Mouse"

If this didn't work for you, you can always revert it back like this:

xinput --set-prop "Logitech USB Optical Mouse" "Device Accel Velocity Scaling" 1
xinput --set-prop "Logitech USB Optical Mouse" "Device Accel Profile" -1

reference