The syntax for setting the mouse acceleration and threshold using xset is
#xset m acceleration threshold
The first argument, "acceleration", is a multiplier number that defines how many times faster than the standard speed the cursor will move. Try numbers between 2 and 5, setting a high multiplier like 9 makes the mouse movements very jerky and jumpy. This does not need to be a whole number, you can use 1/2 to get half the standard speed or 5/2 (=2.5) if 2 is too slow and 3 is too fast.
The second argument, threshold, defines how many pixels the mouse must move in a short period of time before the acceleration setting is used. Using a threshold of 1, as in
, disables this and gives you the same mouse speed at all times. Setting
requires the mouse the move to move 10 pixels before the pointer is accelerated.
' is known to be a good setting.
returns the standard setting.
Add xset to ~/.xinitrc to get your desired mouse speed when X starts.