[Q] Touch input problem. Not Detecting very small movements. - Galaxy S II Q&A, Help & Troubleshooting

Ok I noticed this little issue with the touch screen.
Maybe this is how it is meant to work but just wondering if its the same for everyone.
Basically when you first touch the screen and then move your finger in tiny movements back and forward like 2-3 pixels distance the screen just recognises your initial place you touched. It doesnt recognise the little movements. You have to make a bigger movement with your finger and then the screen starts recognising these tiny movements.
Its like its been set up with software to only track your finger if it moves a minimum distance. If this distance is not met then keep the original place where the screen was touched.
Best way to see this is get a multitouch test app from the market. Basically just one that gives you a dot under your finger when you touch the screen.
Touch the screen and move your finger in tiny movements back and forward. Like really tiny (2-3 pixels in distance)
Does the dot move or does it stay there like its stuck ?
Then you have to make a bigger movement with your finder before the dot starts moving. But after that you can do those tiny movements you did before and the dot moves.
Hope someone understands what i'm saying.
My old phone didnt do that.

Someone try this please

What about touch screen settings are their any ??
jje

sorrowuk said:
Touch the screen and move your finger in tiny movements back and forward. Like really tiny (2-3 pixels in distance)
Does the dot move or does it stay there like its stuck ?
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Same result for me, very small movements of the finger are not registred...

I think the touch screen driver needs work or calibration, see other posts regarding screen sensitivity, screen doesnt pickup light touches sometimes, sometimes I have to make a defined press on the screen for it to work. I have decided I dont mind this now as it is less likely to pickup accidental presses but I still think it is a little under sensitive.

The thing is if you make a big movement and then with your finger still held on the screen make little small movements it recognises them. Its only when you first touch the screen it doesnt recognise the small movements.
Its like its been set up with software to only track your finger if it moves a minimum distance. If this distance is not met then keep the original place where the screen was touched.
Maybe for typing etc so you dont accidently hit another key.
Anyone else able to confirm ? See if it detects tiny movements when you first touch the screen, and then move your finger around for a bit and then try tiny movements it should work then

sorrowuk said:
Maybe for typing etc so you dont accidently hit another key.
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Yup, definitely not a bug IMHO - just tried while playing angry birds and it nails it to the half pixel - there's nothing wrong with the hardware. I find the lack of registration of small touches a major plus, I suppose they should add a menu to disable it for those who don't like it

sorrowuk said:
Hope someone understands what i'm saying.
My old phone didnt do that.
Click to expand...
Click to collapse
I know exactly what you're talking about.
Here is a test for all of you, go onto a webpage, view it at it's native resolution, which will be bigger than your screen res.
1) Drag the screen at 180 angle directly horizontally, say to the right do this slowly and move the screen a bit.
2) Now try scrolling the screen upwards or downward, slowly and carefully without taking your finger off the screen.
3) you should find that the screen is now not responding to your careful touch to scroll in a different direction you originally was scrolling.
4) given that you seem to be locked into scrolling left or right only, drag fast and long distance either upwards or downwards (or diagonally)
5) hey presto, you can now scroll in any direction again with movements as small as you like

Its weird on angry birds, it detects these really small movements.
But on Nova HD for dragging the camera it doesnt detect these really small movements.
However if you make a big movement it then will detect the really small movements as long as you don't take your finger off the screen or you have to start over again.
Another way to see this, is on the lock screen.
Touch the lock image wait a few seconds then move your finger like 2 pixels left and right (really small amount).
The lock image won't move at all. However if you then make a big movement so the lock image starts moving (and keeping your finger still on the screen) then move your finger 2 pixels left and right it moves.
Touch the image and wait a few seconds , then move your finger
Seems like its something to do with software. Not sure how angry birds manages to avoid it.
I reckon it can be patched so it doesnt act like this. I wouldnt have a clue how to do it tho. Someone might tho

Anyone tried it on the lock screen? Same thing ?

http://forum.xda-developers.com/showthread.php?t=1072471
This?

Yep thats it there ^^^ . Thanks.
Hopefully it can be modded. Looks like samsung added a minimum threshold

Yeah I hope so too... looks very annoying.
sorrowuk said:
Yep thats it there ^^^ . Thanks.
Hopefully it can be modded. Looks like samsung added a minimum threshold
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Its annoying when playing nova hd trying to move the crosshair

Related

[Q] Fix multi touch and enable 3 point+

I've done a good bit of research and I'm surprised that nobody has asked how to fix the crappy multi touch streak has.
Here are the issues it currently has (tested in MultiTouch Visualizer 2):
-Does not read second touch until the finger has actually moved
-If you release the second finger without moving the first the phone will not recognize that the first finger is still touching the screen until you move it
-The screen will not register more than 2 touches (the app will just turn the screen blank when a third finger is placed)
So here is my question: Does anybody know of a way to modify the multi touch (response and number of points) through any means like build.prop or perhaps a modified kernel?
Same problem. Still looking for solution. It`s problematic with emulators and most games.

Weird dead spot

So there's a (what I thought was a dead spot) sensitive spot near the top of my screen. It's about an inch tall and spans the whole screen wide. If you press normal to hard it'll do a instant single click. But I found out if you touch it really lightly it'll function like normal.
Now the weird part is it stays w/ the rotation. If you turn it upside down or sideways the bar always effects the same icons and widgets in its path so I don't believe its a hardware problem.
Anyone else have this problem?
i'm assuming you're using a 101 as this seems to be a normal defect of the device. there is a fix where you have to dig inside your archos to get rid of the flex or you can just make a habit of lightly touching it. it's a pain trying to drag widgets on the screen b/c of this.
you can try to recalibrate the screen to see if it may help any.
Yea on a 101 and the recalibrate doesn't help. What is this fix your talking about?
Sent from my htc EVO
The fix that madsquabbles is referring to can be found here:
forum.archosfans.com/viewtopic.php?f=74&t=41717
(You will have to copy and paste the link. I don't have enough posts to enter a URL. )
I have also read that it may go away with time and multiple recalibrations, or that it may be caused by a "rogue" application and/or widget that has issues with the device.
http://forum.archosfans.com/viewtopic.php?f=74&t=41717
Try that one.

screen sensitivity

Hi, thought it was just the go launcher causing this but it looks to be an issue with the phone. Sometimes screen presses don't register, seems a bit random, where pressing harder always work. Seems to me sensitivity has been set a bit to low. Anyone else noticing this or is it just me?
Just you mate, capacitive screens don't respond to harder presses especially since the S2 has a gorilla glass display, what phone are you coming from?
I know that but it really does work better if my press is harder or more defined if you want to put it that way. I come from a HD2, no issues with that, could be a duff screen.
edit: ok there is something wrong here, now it starting bring down the the notifications bar when i click on some icons, odd behaviour.
wonder if its something to do with my phone being set to 190 density, I will have a play
no joy with density change, think my screen is duff.
seems to be a latency issue with the digitiser, if I do a quick touch, say like i am typing it doesnt register at all when I click an icon, if I click and hold an icon for slightly longer (not long enough to bring up the screen edit it options)it is ok, which is why i suggested that pressing harder made it work, its not the pressure its the time my finger is held against the screen, a sensitivity issue, its like the software is being told to ignore light touches.
Typing texts etc is ok, just seems to be an issue on the desktop and drawer when I am selecting icons.

[Q] cant capture screen shot with the palm method on sgs3

hi i have selected the option to take a screen shot from my settings by swiping my palm but it wont capture a screen shot does any one know what i am doing wrong or can help me?
It takes a bit of practice and doesn't always work for me.
Put your palm perpendicular to the screen with your pinkie touching the edge of the left wide side of the screen and slowly slide your hand across. Try it a few times and it'll probably work. If not there's always home + power.
Sent from my GT-I9300 using XDA
Hi,
it took me also some time to get it. But you have to slightly touch the screen and then go from one side to the other.
Here is a short description and 2 videos of both methods (palm and home/power button):
Screenshot with Samsung Galaxy S3
pruhster said:
It takes a bit of practice and doesn't always work for me.
Put your palm perpendicular to the screen with your pinkie touching the edge of the left wide side of the screen and slowly slide your hand across. Try it a few times and it'll probably work. If not there's always home + power.
Sent from my GT-I9300 using XDA
Click to expand...
Click to collapse
it dose not want to work for no reason bro.
If you really need to get it done and got adb on your computer you can use this command: /sbin/screenshot /sdcard/pictures/sgs3screenshot.png
Its more of a karate chop, right to left than a palm
It works well for me. Make sure it is enabled in your settings first of all.
The way it works is not by touching the edges of the screen when swiping, it's just by swiping your palm on the screen. It will detect a large mass moving across the screen and capture the image.
Make sure you swipe horizontally in accordance with the device's orientation.
ZoneBlaze said:
It works well for me. Make sure it is enabled in your settings first of all.
The way it works is not by touching the edges of the screen when swiping, it's just by swiping your palm on the screen. It will detect a large mass moving across the screen and capture the image.
Make sure you swipe horizontally in accordance with the device's orientation.
Click to expand...
Click to collapse
was it really worth dragging up a 5 month old thread for that? lol

[Q] Anyone ever get ghost hits on the screen?

***Nevermind This post. I figured out why this is happening. It was becuase 'use vertical swip to change to symbols' was ticked and apparently just a micron swipe is trigging this on my phone, i type too fast for this option, Turning it off has seemed to fix my problem.****
This is a wierd topic i'm sure, I'm wondering if anyone else ever gets ghost hits on their screen when typing with the on screen keyboard.
I use the regular built in keyboard, no custom rom, no root, nothing, and it seems like 1 out of every 3 or 4 messages i'm typing my keyboard will randomly switch to the symbols, its annoying as hell and I cant figure it out.
You might think "He's probably hitting the key while typing" but its in the lower left corner, and sometimes it will happen when my left hand isn't even typing, i'll be going to hit the I key with my right thumb and BAM i'm in symbols now... I dont know if its exactly the same key every time I cant seem to quite reproduce the problem, it just randomly happens and its irritating.
I'm wondering if there could be some kind of link to the screen protector causing this or not? It's a clearvue screen protector.. I've also noticed when playing around with the screen, that sometimes I can get my fingre sooo close that it actually detects a response, and my finger hasn't even touched the screen yet! IS there some sensitivity thing i can adjust or something? cuz i dont know whats up with this wierdness...
Anyone else?

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