ubuntu:mouse:change_mouse_sensitivity
Table of Contents
Ubuntu - Mouse - Change Mouse Sensitivity
Determine the system
xinput list-props 8
returns:
Device 'Razer Razer DeathAdder V2': Device Enabled (155): 1 Coordinate Transformation Matrix (157): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000 libinput Natural Scrolling Enabled (291): 0 libinput Natural Scrolling Enabled Default (292): 0 libinput Scroll Methods Available (293): 0, 0, 1 libinput Scroll Method Enabled (294): 0, 0, 0 libinput Scroll Method Enabled Default (295): 0, 0, 0 libinput Button Scrolling Button (296): 2 libinput Button Scrolling Button Default (297): 2 libinput Middle Emulation Enabled (298): 0 libinput Middle Emulation Enabled Default (299): 0 libinput Accel Speed (300): 0.742647 libinput Accel Speed Default (301): 0.000000 libinput Accel Profiles Available (302): 1, 1 libinput Accel Profile Enabled (303): 1, 0 libinput Accel Profile Enabled Default (304): 1, 0 libinput Left Handed Enabled (305): 0 libinput Left Handed Enabled Default (306): 0 libinput Send Events Modes Available (276): 1, 0 libinput Send Events Mode Enabled (277): 0, 0 libinput Send Events Mode Enabled Default (278): 0, 0 Device Node (279): "/dev/input/event7" Device Product ID (280): 5426, 132 libinput Drag Lock Buttons (307): <no items> libinput Horizontal Scroll Enabled (308): 1
NOTE: The initial 8 is the Mouse Id as determined per Determine the Mouse.
- The libinput lines indicate that this is Wayland/libinput.
On Wayland/libinput systems
xinput --set-prop "Device Name" "libinput Accel Speed" -0.9
NOTE: The number must be an integer between 1 and -1, and appears less flexible than the old Constant Deceleration setting.
- Check this plot to see the impact of different acceleration speed values.
- libinput calculates the mouse acceleration depending on the DPI and the parameter Acceleration Speed.
On non-Wayland/libinput systems
xinput --set-prop "Device Name" "Device Accel Constant Deceleration" 5
NOTE: The lower the number the faster it will be, similarly, higher the number slower it will be.
To turn off mouse acceleration
xinput --set-prop "Razer DeathAdder" "Device Accel Velocity Scaling" 1 xinput --set-prop "Razer DeathAdder" "Device Accel Profile" -1
Confirm any changes
Using xset to change acceleration
xset can also be used to change acceleration.
NOTE: xset does not use libinput.
Get the current xset values
xset q | grep -A 1 Pointer
returns:
Pointer Control: acceleration: 2/1 threshold: 4
NOTE:
- acceleration defines how many times faster the cursor will move than the default speed.
- acceleration can be a fraction.
- To slow down the mouse, use 1/2, 1/3, 1/4, …
- To make it faster, use 2/1, 3/1, 4/1, …
- threshold is the velocity required for acceleration to become effective, usually measured in device units per 10ms.
- Threshold defines the point at which acceleration should occur in pixels per 10 ms.
- If threshold is zero, then acceleration is treated as “the exponent of a more natural and continuous formula.”.
- This gives precise control for slow motion but big reach for fast motion, and a progressive transition for motions in between.
Set new values
xset m acceleration threshold
NOTE:
- acceleration defines how many times faster the cursor will move than the default speed.
- acceleration can be a fraction.
- To slow down the mouse, use 1/2, 1/3, 1/4, …
- To make it faster, use 2/1, 3/1, 4/1, …
- threshold is the velocity required for acceleration to become effective, usually measured in device units per 10ms.
- Threshold defines the point at which acceleration should occur in pixels per 10 ms.
- If threshold is zero, then acceleration is treated as “the exponent of a more natural and continuous formula.”.
- This gives precise control for slow motion but big reach for fast motion, and a progressive transition for motions in between.
- Recommended acceleration value in this case is 3/2 to 2, but not limited to that range.
xset m 3/2 0
To reduce mouse acceleration
xset mouse 1 1
To increase the mouse speed
xset mouse 10 1
Reset xset to the default settings
xset m default
Save the New Setting Permanently
Add a new file in /usr/share/X11/xorg.conf.d/.
For example, /usr/share/X11/xorg.conf.d/60-razer-deathadder-v2.conf
- /usr/share/X11/xorg.conf.d/60-razer-deathadder-v2.conf
Section "InputClass" Identifier "Razer Deathadder v2" MatchProduct "Razer Razer DeathAdder V2" Option "ConstantDeceleration" "3" Option "ButtonMapping" "1 0 3 4 5 6 7 8 9" EndSection
NOTE:
- The filename can be anything similar.
- Identifier: Can be anything.
- MatchProduct: Product name from xinput list.
- Option: The options to change.
References
ubuntu/mouse/change_mouse_sensitivity.txt · Last modified: 2021/10/26 11:50 by peter