Question

(android 6/7) disable touchscreen input motion filter?

Dec 1, 2017 7:20PM PST

so i just upgraded from an old lg optimus 4x hd phone (android 4.0.3) to a new xiaomi redmi 4 prime (android 6.0.1) and what is annoying me most is a strange software effect filtering all input motion from the touchscreen.

for example when im trying to scroll in settings menu, but moving the finger slightly up and down, the motion is getting filtered completely. when trying to scroll slowly the lag/filter is most annoying. with android 4.0.3 this doesnt happen, all motion input from the touchscreen is getting directly forwarded without any delay/lag/filter.

this touchscreen input filter behavior also occurs in apps like for example realvnc viewer, with android 4.0.3 its pretty easy to accurately control the cursor, with android 6.0.1 its almost impossible to control the cursor because all touchscreen input motion is getting filtered/delayed.


is there any way to disable the touchscreen motion filter behavior and make the touchscreen input to be direct like it was in previous android versions like android 4.0.3?

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Comments
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Clarification Request
bumppp
Dec 6, 2017 7:47PM PST

bump

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Answer
Does not sound right.
Dec 1, 2017 7:28PM PST

I have a few Android phones and tablets and not one does what you write here,

To me this sounds like a bad phone.

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Answer
android 6/7
Dec 1, 2017 8:41PM PST

its definately android 6/7 related, i also tested a cubot note plus and homtom ht17, both show the same software effect, i think u never got used to real unfiltered touchscreen input, thats why u dont just realize it.

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I had a Cubot x15 phone.
Dec 2, 2017 6:46AM PST

It seemed to work just like any other Android. At one time this year I had a dozen Android phones and tablets on my desk for testing. Nothing like you wrote seemed to happen.

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touchscreen issue comparison videos
Dec 4, 2017 10:28PM PST

I have now uploaded 2 Videos of the Xiaomi Redmi 4 Prime and LG Optimus 4X HD which in comparison should show clearly what i mean with "touchscreen input motion filter":

https://www.youtube.com/watch?v=qgLqw47wsjY
https://www.youtube.com/watch?v=_ac1RgK2Xhw

At 0:00-0:37 (and especially at VNC Viewer test 1:21-1:53) you can clearly see how the Xiaomi Redmi 4 Prime creates some kind of a "smooth-scroll-effect", it continues scrolling very slowly, even though the finger has already stopped moving. This clearly must be a software effect, i cant imagine a hardware problem.

At 0:37-1:21 and 1:53-2:36 you can see, how much the touchscreen has got an input travel almost like the steering wheel of a car, smaller up/down/left/right movements are just being ignored and filtered out. Also here i can only very hardly imagine that this is a hardware issue, for me it clearly looks like a software effect.

As already said, i also tested 2 other Android 6/7 phones (Cubot Note Plus and Homtom HT17 pro), both show exactly the same behavior as the seen in the video of the Xiaomi Redmi 4 Prime.

The questions that im now asking myself are: Where does this touchscreen software effect come from? What is it called? And how do i remove it? (If necessary, i also agree to root/unlock or install a custom rom on my Xiaomi phone)


And please test your phones again like shown in my videos.

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Sorry no.
Dec 5, 2017 8:32AM PST

Can't do that as your test requires me to work far too hard. VNC would have to be setup and more.

I can add that I have seen VNC do odd scrolls so there's that. Also, to go further, be sure to post on XDA Forums, AndroidPolice and such. I'm just someone that is writing apps so my interest is here but I'm not seeing it. My bet is the CPU or such is getting soaked.

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PS. I'd post in the XDA Forums.
Dec 2, 2017 6:49AM PST

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