Jumpy Cursor

[nemesis]

Is there an option similar to *tu's JumpyCursorThreshold for synaptics/synclient? I've looked around, found palm detect, but it's not quite what I'm looking for, though similar. Basically the cursor becomes really jumpy when I inadvertently touch the pad with a second finger while using it. JumpyCursorThreshold prevents that.

[Fitzcarraldo]

From ArchWiki - Asus Eee PC 1005HA:

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# This will make cursor not to jump if you have two fingers on the touchpad and you lift one
# (which you usually do after two-finger scrolling)
xinput set-int-prop "SynPS/2 Synaptics TouchPad" "Synaptics Jumpy Cursor Threshold" 32 110

On my main laptop, the xinput command's help switch tells me the possible commands are:

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$ xinput --help
usage :
        xinput get-feedbacks <device name>
        xinput set-ptr-feedback <device name> <threshold> <num> <denom>
        xinput set-integer-feedback <device name> <feedback id> <value>
        xinput get-button-map <device name>
        xinput set-button-map <device name> <map button 1> [<map button 2> [...]]
        xinput set-pointer <device name> [<x index> <y index>]
        xinput set-mode <device name> ABSOLUTE|RELATIVE
        xinput list [--short || --long] [<device name>...]
        xinput query-state <device name>
        xinput test [-proximity] <device name>
        xinput create-master <id> [<sendCore (dflt:1)>] [<enable (dflt:1)>]
        xinput remove-master <id> [Floating|AttachToMaster (dflt:Floating)] [<returnPointer>] [<returnKeyboard>]
        xinput reattach <id> <master>
        xinput float <id>
        xinput set-cp <window> <device>
        xinput test-xi2 <device>
        xinput list-props <device> [<device> ...]
        xinput set-int-prop <device> <property> <format (8, 16, 32)> <val> [<val> ...]
        xinput set-float-prop <device> <property> <val> [<val> ...]
        xinput set-atom-prop <device> <property> <val> [<val> ...]
        xinput watch-props <device>
        xinput delete-prop <device> <property>
        xinput set-prop <device> [--type=atom|float|int] [--format=8|16|32] <property> <val> [<val> ...]

so the syntax of the command to set the property for the touchpad is:

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xinput set-int-prop <device> <property> <format (8, 16, 32)> <val> [<val> ...]

You find out the <device> by using the command xinput list. Here is what that command returns on my main laptop:

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$ xinput list
⎡ Virtual core pointer                          id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]
⎜   ↳ Microsoft Microsoft Optical Mouse with Tilt Wheel id=10   [slave  pointer  (2)]
⎜   ↳ SynPS/2 Synaptics TouchPad                id=15   [slave  pointer  (2)]
⎣ Virtual core keyboard                         id=3    [master keyboard (2)]
    ↳ Virtual core XTEST keyboard               id=5    [slave  keyboard (3)]
    ↳ Power Button                              id=6    [slave  keyboard (3)]
    ↳ Video Bus                                 id=7    [slave  keyboard (3)]
    ↳ Power Button                              id=8    [slave  keyboard (3)]
    ↳ Sleep Button                              id=9    [slave  keyboard (3)]
    ↳ USB 2.0 Camera                            id=11   [slave  keyboard (3)]
    ↳ NOVATEK USB Keyboard                      id=12   [slave  keyboard (3)]
    ↳ NOVATEK USB Keyboard                      id=13   [slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard              id=14   [slave  keyboard (3)]
    ↳ ENE eHome Infrared Remote Receiver        id=16   [slave  keyboard (3)]

so I see that <device> for my touchpad is "SynPS/2 Synaptics TouchPad" (i.e. the same as the ArchWiki example), so I could also use:

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xinput set-int-prop "SynPS/2 Synaptics TouchPad" "Synaptics Jumpy Cursor Threshold" 32 110

Give it a try. To make it permanent, configure your DE to execute that command at start up.

[Fitzcarraldo]

A possible alternative to the above, although I have not tried this myself...

Using the command locate synaptics I see that my main laptop has a file /usr/share/X11/xorg.conf.d/50-synaptics.conf. Its contents are as follows:

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Section "InputClass"
        Identifier "touchpad catchall"
        Driver "synaptics"
        MatchIsTouchpad "on"
EndSection

I don't know if it would work, but you could try adding the following line into the Section "InputClass" in that file:

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Option "JumpyCursorThreshold" "32"

(or whatever value you were using successfully in Ubuntu).

Try that too, to see if it works.