Adaptive acceleration for touchpad on Ubuntu 17.10
Solution 1
For this, try editing the key speed
from the schema org.gnome.desktop.peripherals.touchpad
. The description for the key is as follows:
Pointer speed for the touchpad. Accepted values are in the [-1..1] range (from "unaccelerated" to "fast"). A value of 0 is the system default.
which strongly indicates the gnome key has something to do with touchpad acceleration. Use the dconf editor or gsettings through the command line and see if modifying this key has any effect.
Solution 2
In 17.10, you can also set the acceleration profile directly and disable mouse acceleration by setting accel-profile
to 'flat'
gsettings set org.gnome.desktop.peripherals.mouse accel-profile 'flat'
Alternatively, use dconf-editor
:
Solution 3
Edit: Sorry this only helps if you're using Xorg, not Wayland according to Arch Linux' Wiki:
For Wayland, there is no libinput configuration file. The configurable options depend on the progress of your desktop environment's support for them; see #Graphical tools.
For Xorg, a default configuration file for the wrapper is installed to /usr/share/X11/xorg.conf.d/40-libinput.conf. No extra configuration is necessary for it to autodetect keyboards, touchpads, trackpointers and supported touchscreens.
For Xorg:
According to its man page libinput
also supports adaptive acceleration:
You should be able to add it as an option in xorg.conf, e.g. /usr/share/X11/xorg.conf.d/40-libinput.conf
:
Option "AccelProfile" "adaptive"
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nikhilweee
Updated on September 18, 2022Comments
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nikhilweee over 1 year
I recently updated from Ubuntu 16.04 running Unity to 17.10 running GNOME. Since the upgrade, I'm missing the adaptive acceleration feature on my touchpad. I absolutely loved it because it was more accurate for shorter distances.
On digging a bit, I found out that 17.10 uses GNOME with
libinput
instead ofsynaptics
, butlibinput
uses aflat
acceleration profile for touchpads by default (https://wayland.freedesktop.org/libinput/doc/1.4.3/pointer-acceleration.html#ptraccel-touchpad).I also tried installing
xserver-xorg-input-synaptics
on 17.10. This works fine, except for the fact that it is too cumbersome to enable 'Natural Scrolling' from the command line (https://askubuntu.com/a/206006). Another problem is that GNOME doesn't show touchpad settings withsynaptics
installed (https://unix.stackexchange.com/a/292920).I also tried fidgeting with
gnome-tweak-tool
under the 'Keyboard and Mouse' submenu on the sidebar but it has an option to select 'Acceleration Profile' only for a mouse, not for touchpads (see screenshot in What are Mouse Acceleration profiles in the gnome-tweak-tool?).Is there a way to enable adaptive acceleration for touchpads with
libinput
which has none of the above side effects? -
thebunnyrules over 6 yearsI'm pretty sure, the mouse section applies to actual mouse devices that you hookup to the usb and not the touchpad.
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thebunnyrules over 6 yearsI stand corrected....
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Simon A. Eugster over 6 years@thebunnyrules Yes, sorry, you are right – I did not see the “for touchpad” part :)
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thebunnyrules over 6 yearsSimon, I tried it out anyway and it did actually impact the performance of my touchpad. So no, I think you were right to recommend it.
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grg rsr over 6 yearsjust upgraded to 17.10, and found the decreased touchpad performance very disappointing as well. setting it to
'adaptive'
with the command you suggested fixed it. -
Sia about 6 yearsWhere did you get the definition for that key? Just curious so I could find the others.
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robcast about 6 yearsYou can see all keys with
gsettings list-keys org.gnome.desktop.peripherals.touchpad
and get the definition of a single key withgsettings describe org.gnome.desktop.peripherals.touchpad speed
. -
robcast about 6 yearsSetting
speed
is not really adaptive acceleration. Judging by the keysorg.gnome.desktop.peripherals.mouse
has adaptive acceleration andorg.gnome.desktop.peripherals.touchpad
simply hasn't :-( -
Erdnase about 4 yearsTrying in Ubuntu 20.04. This only changes the mouse speed and not the acceleration. After the change in dconf editor, the same change is visible as mouse speed in the GUI