Difference between revisions of "Mouse acceleration"

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[[Category:Mice (English)]]
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[[Category:Mice]]
[[Category:X Server (English)]]
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[[Category:X Server]]
{{i18n|Mouse acceleration}}
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[[ja:Mouse acceleration]]
 
+
 
There are several ways of setting mouse acceleration:
 
There are several ways of setting mouse acceleration:
  
# by editing xorg configuration files
+
# By editing xorg configuration files
# the {{Package Official|xorg-server-utils}} package provides two programs that can be used to change those settings from a shell or a script:
+
# The {{Pkg|xorg-server-utils}} package provides two programs that can be used to change those settings from a shell or a script:
#* {{Ic|xset}}
+
#* '''xset'''
#* {{Ic|xinput}}
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#* '''xinput'''
# many [[Desktop Environment]]s provide a configuration GUI for mouse settings. They should be easy to find and use.
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# Many [[desktop environment]]s provide a configuration GUI for mouse settings. They should be easy to find and use.
 +
 
 +
== Setting mouse acceleration ==
 +
 
 +
=== In Xorg configuration ===
  
==Setting mouse acceleration==
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See {{ic|man xorg.conf}} for details.
===In xorg configuration===
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See {{Ic|man xorg.conf}} for details.
+
  
 
Examples:
 
Examples:
  
{{File|name=/etc/X11/xorg.conf.d/50-mouse-acceleration.conf|content=<nowiki>
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{{hc|/etc/X11/xorg.conf.d/50-mouse-acceleration.conf|2=
 
Section "InputClass"
 
Section "InputClass"
Identifier "generic mouse"
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Identifier "My Mouse"
 +
MatchIsPointer "yes"
 
# set the following to 1 1 0 respectively to disable acceleration.
 
# set the following to 1 1 0 respectively to disable acceleration.
 
Option "AccelerationNumerator" "2"
 
Option "AccelerationNumerator" "2"
Line 25: Line 27:
 
Option "AccelerationThreshold" "4"
 
Option "AccelerationThreshold" "4"
 
EndSection
 
EndSection
</nowiki>}}
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}}
  
{{File|name=/etc/X11/xorg.conf.d/50-mouse-deceleration.conf|content=<nowiki>
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{{hc|/etc/X11/xorg.conf.d/50-mouse-deceleration.conf|2=
 
Section "InputClass"
 
Section "InputClass"
Identifier "generic mouse"
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Identifier "My Mouse"
 +
MatchIsPointer "yes"
 
# some curved deceleration
 
# some curved deceleration
 
# Option "AdaptiveDeceleration" "2"
 
# Option "AdaptiveDeceleration" "2"
Line 35: Line 38:
 
Option "ConstantDeceleration" "2"
 
Option "ConstantDeceleration" "2"
 
EndSection
 
EndSection
</nowiki>}}
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}}
  
You can also assign settings to specific hardware by using "MatchProduct", "MatchVendor" and other matches inside class sections.  
+
You can also assign settings to specific hardware by using "MatchProduct", "MatchVendor" and other matches inside class sections.
  
 
=== Using xset ===
 
=== Using xset ===
  
 
To get the current values, use:
 
To get the current values, use:
  xset q | grep -A 1 Pointer
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  $ xset q | grep -A 1 Pointer
  
 
To set new values, type:
 
To set new values, type:
  xset m ACCELERATION THRESHOLD
+
  $ xset m ''acceleration'' ''threshold''
  
where ACCELERATION defines how many times faster the cursor will move than the default speed, when the cursor moves more than THRESHOLD pixels in a short time. ACCELERATION can be a fraction, so if you want to slow down the mouse you can use 1/2, and if 3 is slightly too fast, but 2 is too slow, you can use 5/2, etc.
+
where ''acceleration'' defines how many times faster the cursor will move than the default speed. ''threshold'' is the velocity required for acceleration to become effective, usually measured in device units per 10ms. ''acceleration'' can be a fraction, so if you want to slow down the mouse you can use 1/2, 1/3, 1/4, ... if you want to make it faster you can use 2/1, 3/1, 4/1, ...
 +
 
 +
''Threshold'' defines the point at which acceleration should occur in pixels per 10 ms. If threshold is zero, e.g. if you use:
 +
 
 +
$ xset m 3/2 0
 +
 
 +
as suggested in the man page, then acceleration is treated as "the exponent of a more natural and continuous formula."
  
 
To get the default settings back:
 
To get the default settings back:
  xset m default
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  $ xset m default
  
For more info see {{Ic|man xset}}.
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For more info see {{ic|man xset}}.
  
To make it permanent, edit xorg configuration (see above) or add commands to [[xprofile]]. The latter won't affect speed in a [[Display Manager]].
+
To make it permanent, edit xorg configuration (see above) or add commands to [[xprofile]]. The latter won't affect speed in a [[display manager]].
  
 
=== Using xinput ===
 
=== Using xinput ===
  
 
First, get a list of devices plugged in (ignore any virtual pointers):
 
First, get a list of devices plugged in (ignore any virtual pointers):
  xinput list
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  $ xinput list
  
Take not of the ID. You may also use the full name in commands if the ID is prone to changing.
+
Take note of the ID. You may also use the full name in commands if the ID is prone to changing.
  
 
Get a list of available properties and their current values available for modification with
 
Get a list of available properties and their current values available for modification with
  xinput list-props 9
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  $ xinput list-props 9
  
where {{Ic|9}} is the ID of the device you wish to use. Or
+
where {{ic|9}} is the ID of the device you wish to use. Or
  xinput list-props 'Bobs mouse brand'
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  $ xinput list-props ''mouse brand''
  
where {{Ic|Bobs mouse brand}} is the name of your mouse given by {{Ic|xinput list}}
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where ''mouse brand'' is the name of your mouse given by {{ic|$ xinput list}}
  
Example, changing the property of {{Ic|Constant Deceleration}} to 2:
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Example, changing the property of {{ic|Constant Deceleration}} to 2:
$ xinput list-props 9
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{{hc|$ xinput list-props 9|
Device 'Bobs mouse brand':
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Device &#39;''mouse brand''&#39;:
        Device Enabled (121):  1
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      Device Enabled (121):  1
        Device Accel Profile (240):    0
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      Device Accel Profile (240):    0
        Device Accel Constant Deceleration (241):      1.000000
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      Device Accel Constant Deceleration (241):      1.000000
        Device Accel Adaptive Deceleration (243):      1.000000
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      Device Accel Adaptive Deceleration (243):      1.000000
        Device Accel Velocity Scaling (244):    10.000000
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      Device Accel Velocity Scaling (244):    10.000000
  $ xinput --set-prop 'Bobs mouse brand' 'Device Accel Constant Deceleration' 2
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}}
 +
  $ xinput --set-prop &#39;''mouse brand''&#39; 'Device Accel Constant Deceleration' 2
  
 
To make it permanent, edit xorg configuration (see above) or add commands to [[xprofile]]. The latter won't affect speed in a [[Display Manager]].
 
To make it permanent, edit xorg configuration (see above) or add commands to [[xprofile]]. The latter won't affect speed in a [[Display Manager]].
 +
 +
=== Configuration example ===
 +
 +
You may need to resort to using more than one method to achieve your desired mouse settings. Here's what I did to configure a generic optical mouse:
 +
First, slow down the default movement speed 3 times so that it's more precise.
 +
$ xinput --set-prop 9 'Device Accel Constant Deceleration' 3 &
 +
Then, enable acceleration and make it 3 times faster after moving past 6 units.
 +
$ xset mouse 3 6 &
 +
If you are satisfied of the results, store the preceding commands in {{ic|~/.xinitrc}}.
  
 
== Disabling mouse acceleration ==
 
== Disabling mouse acceleration ==
  
Mouse acceleration has changed dramatically in recent X server versions, using {{Ic|xset}} to disable acceleration doesn't work as it used to and is not recommended anymore.
+
Mouse acceleration has changed dramatically in recent X server versions; using {{Ic|xset}} to disable acceleration doesn't work as it used to and is not recommended anymore.
  
Recent changes on {{Ic|PointerAcceleration}} can be read [http://xorg.freedesktop.org/wiki/Development/Documentation/PointerAcceleration#Introduction here].
+
Recent changes on {{ic|PointerAcceleration}} can be read [http://xorg.freedesktop.org/wiki/Development/Documentation/PointerAcceleration#Introduction here].
  
 
To completely disable any sort of acceleration/deceleration, create the following file:
 
To completely disable any sort of acceleration/deceleration, create the following file:
{{File|name=/etc/X11/xorg.conf.d/50-mouse-acceleration.conf|content=<nowiki>
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{{hc|/etc/X11/xorg.conf.d/50-mouse-acceleration.conf|2=
 
Section "InputClass"
 
Section "InputClass"
Identifier "generic mouse"
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Identifier "My Mouse"
 +
MatchIsPointer "yes"
 
Option "AccelerationProfile" "-1"
 
Option "AccelerationProfile" "-1"
 
Option "AccelerationScheme" "none"
 
Option "AccelerationScheme" "none"
 
EndSection
 
EndSection
</nowiki>}}
+
}}
 +
and restart X.

Revision as of 06:10, 28 July 2013

There are several ways of setting mouse acceleration:

  1. By editing xorg configuration files
  2. The xorg-server-utils package provides two programs that can be used to change those settings from a shell or a script:
    • xset
    • xinput
  3. Many desktop environments provide a configuration GUI for mouse settings. They should be easy to find and use.

Setting mouse acceleration

In Xorg configuration

See man xorg.conf for details.

Examples:

/etc/X11/xorg.conf.d/50-mouse-acceleration.conf
Section "InputClass"
	Identifier "My Mouse"
	MatchIsPointer "yes"
# set the following to 1 1 0 respectively to disable acceleration.
	Option "AccelerationNumerator" "2"
	Option "AccelerationDenominator" "1"
	Option "AccelerationThreshold" "4"
EndSection
/etc/X11/xorg.conf.d/50-mouse-deceleration.conf
Section "InputClass"
	Identifier "My Mouse"
	MatchIsPointer "yes"
# some curved deceleration
#	Option "AdaptiveDeceleration" "2"
# linear deceleration (mouse speed reduction)
	Option "ConstantDeceleration" "2"
EndSection

You can also assign settings to specific hardware by using "MatchProduct", "MatchVendor" and other matches inside class sections.

Using xset

To get the current values, use:

$ xset q | grep -A 1 Pointer

To set new values, type:

$ xset m acceleration threshold

where acceleration defines how many times faster the cursor will move than the default speed. threshold is the velocity required for acceleration to become effective, usually measured in device units per 10ms. acceleration can be a fraction, so if you want to slow down the mouse you can use 1/2, 1/3, 1/4, ... if you want to make it faster you can use 2/1, 3/1, 4/1, ...

Threshold defines the point at which acceleration should occur in pixels per 10 ms. If threshold is zero, e.g. if you use:

$ xset m 3/2 0

as suggested in the man page, then acceleration is treated as "the exponent of a more natural and continuous formula."

To get the default settings back:

$ xset m default

For more info see man xset.

To make it permanent, edit xorg configuration (see above) or add commands to xprofile. The latter won't affect speed in a display manager.

Using xinput

First, get a list of devices plugged in (ignore any virtual pointers):

$ xinput list

Take note of the ID. You may also use the full name in commands if the ID is prone to changing.

Get a list of available properties and their current values available for modification with

$ xinput list-props 9

where 9 is the ID of the device you wish to use. Or

$ xinput list-props mouse brand

where mouse brand is the name of your mouse given by $ xinput list

Example, changing the property of Constant Deceleration to 2:

$ xinput list-props 9
Device 'mouse brand':
       Device Enabled (121):   1
       Device Accel Profile (240):     0
       Device Accel Constant Deceleration (241):       1.000000
       Device Accel Adaptive Deceleration (243):       1.000000
       Device Accel Velocity Scaling (244):    10.000000
$ xinput --set-prop 'mouse brand' 'Device Accel Constant Deceleration' 2

To make it permanent, edit xorg configuration (see above) or add commands to xprofile. The latter won't affect speed in a Display Manager.

Configuration example

You may need to resort to using more than one method to achieve your desired mouse settings. Here's what I did to configure a generic optical mouse: First, slow down the default movement speed 3 times so that it's more precise.

$ xinput --set-prop 9 'Device Accel Constant Deceleration' 3 &

Then, enable acceleration and make it 3 times faster after moving past 6 units.

$ xset mouse 3 6 &

If you are satisfied of the results, store the preceding commands in ~/.xinitrc.

Disabling mouse acceleration

Mouse acceleration has changed dramatically in recent X server versions; using xset to disable acceleration doesn't work as it used to and is not recommended anymore.

Recent changes on PointerAcceleration can be read here.

To completely disable any sort of acceleration/deceleration, create the following file:

/etc/X11/xorg.conf.d/50-mouse-acceleration.conf
Section "InputClass"
	Identifier "My Mouse"
	MatchIsPointer "yes"
	Option "AccelerationProfile" "-1"
	Option "AccelerationScheme" "none"
EndSection

and restart X.