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[Firefox] Highly sensitive touchpad scrolling fix for Wayland! (self.linux)

submitted 1 year ago* (last edited 1 year ago) by a1_15 to c/[email protected]

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Been tinkering with alot of parameters in about:config, but I finally a viable solution:

We all know that changing mousewheel.default.delta_multiplier_Any particular Axis values changes the minimum number of lines being scrolled

But what this does not change is the sensitivity of the smallest "fling" gesture when scrolling with a touchpad.

Here's the values you want to alter when trying make the scrolling feel more "tighter" or more "Windows like" or to fix the issue described above:

set apz.fling_friction 0.002 --> 0.005

apz.fling_min_velocity_threshold 0.5 --> 1.5

the above will make the smooth scrolling with touchpad actually feel smooth and in control. As opposed to simply changing the delta multiplier values.

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[–] a1_15 1 points 1 year ago

Yeah, this fix mainly mitigates the "looseness" when scrolling with a touchpad. min_velocity_threshold is the parameter that controls how kinetic the smallest fling is. The higher the value, the more tight it'll be, i.e. the lesser the velocity of the minimum fling will be

apz_fling_friction controls how long the effect of a complete fling lasts, how rough the scroll should be. Lowering the value will "lubricate" the scroll. Increasing it will do the opposite, which is what we did here.

Mozilla really should have made these values the default, since HiDPI displays behave differently with touchpads on Linux than they do with Windows... And it's not exactly easy for someone new to sit down and check different scroll related parameters to fix such annoying issues.