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--- ubuntu:mouse:lowering_mouse_sensitivity [2021/10/26 09:47] – [On Wayland/libinput systems] peter
+++ ubuntu:mouse:lowering_mouse_sensitivity [2021/10/26 10:10] (current) – removed peter
@@ Line 1: / Line 1: @@
-====== Ubuntu - Mouse - Lowering Mouse Sensitivity ======
-  * [[Ubuntu:Mouse:Determine the Mouse|Determine the Mouse]].
-----
-===== Determine the system =====
-<code bash>
-xinput list-props 8
-</code>
-returns:
-<code bash>
-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
-</code>
-<WRAP info>
-**NOTE:**  The initial 8 is the Mouse Id as determined per [[Ubuntu:Mouse:Determine the Mouse|Determine the Mouse]].
-  * The **libinput** lines indicate that this is **Wayland/libinput**.
-</WRAP>
-----
-===== On Wayland/libinput systems =====
-<code bash>
-xinput --set-prop "Device Name" "libinput Accel Speed" -0.9
-</code>
-<WRAP info>
-**NOTE:**  The number must be an integer between 1 and -1, and appears less flexible than the old **Constant Deceleration** setting.
-  * Check [[https://wayland.freedesktop.org/libinput/doc/latest/pointer-acceleration.html#ptraccel-linear|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.
-</WRAP>
-----
-===== References =====
-https://wayland.freedesktop.org/libinput/doc/latest/pointer-acceleration.html#ptraccel-linear
-===== On non-Wayland/libinput systems =====
-<code bash>
-xinput --set-prop "Device Name" "Device Accel Constant Deceleration" 5
-</code>
-<WRAP info>
-**NOTE:**  The lower the number the faster it will be, similarly, higher the number slower it will be.
-</WRAP>
-----
-==== To turn off mouse acceleration ====
-<code bash>
-xinput --set-prop "Razer DeathAdder" "Device Accel Velocity Scaling" 1
-xinput --set-prop "Razer DeathAdder" "Device Accel Profile" -1
-</code>
-----