Develop Bugs

[Q]Screen lags when lower part of screen is touched

UPDATE: I was preparing my phone to be send back in for RMA, but after flashing the stock RUU Bravo_Froyo_HTC_WWE_2.29.405.2 the lower half works like it should. WTF!
Can someone please enlighten me.
UPDATE 2: So after I flashed the original RUU and struggled a bit to get custom recovery back, I flashed RCMixHD 0.15 again and now nothing. Screen runs perfectly smooth. Same settings as before, more or less same apps. Maybe it was a rogue app or something, I don't know.
I have a very wierd problem on my Desire.
It is running the v0.15 A2SD+ of RCMixHD.
The lower part of the screen is lagging like hell when I'm touching it.
On the home screen: If I swipe left and right using the top half of the screen, it runs smooth as expected.
If I swipe on the lower half of the screen, it lags as if it can't update correctly or something. I have added a video of what it looks like.
If it is not so easy to see, watch it in HD on youtube.
It is easiest to see when I move my finger very slow across the lower half of the screen vs. the top.
Here is a screenshot where you can see that the "resolution" of the touch on the lower half is much lower.
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Not sure if I'm being helpful but I tried on CM 7 with ADW launcher and it doesn't do that for me.
Uniform scrolling speed regardless of which part.
Mine is laggy at first split sec of sliding though. There's a sec of it sticking to the side before responding :S

sorry to bring up an oldish thread if you have solved it, but that is to do with software keyboards, used to get it on my hero all the time.
oh wait, did you try just rebooting the device? i know it seems silly but this usually happens when you switch from htc ime mod and a reboot fixes it.

S-Pen issue (Not the standard sensitivity issue)

I am right-handed and the phone's setting is set to right-handed, this is how it looks when I draw a line from the left side of the screen all the way to the right until the S-Pen disconnects from the screen:
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You can clearly see that the line is cut-off half an inch before the edge. If I hold the S-Pen in the left hand and drag a line from right-to-left, I get the same effect on the left side of the screen. Disappointing.

I've got the AT&T Note II and I am not seeing this. I'm a righty with right-handed mode.
.

I wish I could borrow a different pen to determine the source of the problem. How much does a new S-Pen cost anyway?
-EDIT: I bought a new one on eBay for $20US, will have to wait a couple of weeks for it to arrive.

I have a similar problem. Not as exaggerated though. I think it has to do with the sensitivity of then Pen, which you can adjust by taking the button off. I think it is due to the way the Pen is powered. When it is off the edge of the screen, it isn't getting as much power. Look into how wacom pens are powered to see what I'm talking about

I calibrated the sensitivity slightly by turning the potentionmeter half a turn counter-clockwise and now it's PERFECT.
This thread should help others who suffer from this issue.
p.s. now I regret paying $20US for the other S-Pen..

Is there a link with instructions of how you did it?

http://phandroid.com/2012/12/05/how-to-adjust-s-pen/
Be very careful and gentle with the screw, it's really easy to break.

BullHorn7 said:
http://phandroid.com/2012/12/05/how-to-adjust-s-pen/
Be very careful and gentle with the screw, it's really easy to break.
Click to expand...
Click to collapse
Wow!This worked great. Thanks for posting the link :thumbup:
Sent from Samsung Galaxy Note II

[Q] Touch Screen Responsiveness

Hi, I bought my nexus 7 in 2013, it had Kitkat 4.4.4 for most of its time, I never rooted it.
However about three months back I noticed a strange thing that I could only pull down the notification bar from the very left and right ends of the screen.
Since I was a bit skeptical I did installed a touch screen test app named "Yet Another MultiTouch Test" https://play.google.com/store/apps/details?id=com.rn.yamtt and tested the screen responsiveness, then I found out that a slight strip on the top edge of the tough screen had become unresponsive rest of the screen was fully responsive. For the clear visualization please refer to the following illustration as I didn't took a screen shot at that time.
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I didn't consider it as a big issue as it didn't get in the way of using the device.
Eventually I updated to android lollipop and the touch screen issue still existed as same as when the device was on kitkat 4.4.4, but from last couple of weeks my touch screen issue seem to increase over time not full vertical strip has gone unresponsive to touch.
After going through many threads I even took the back cover off and check if the touch screen connectors are intact. The only thing I didn't try was software mods as I doubt that would help me because used this for almost a year without any issue.
I never dropped the device the screen shows no damage or whats so ever.
So I shall be much be thankful if anybody could help me find where the defect is.

new Mi5s screen problem

My friend brought me a brand new Mi5s from China. I heard many good reviews on this phone so asked my friend to get me one. I was excited to unbox and it is a beautiful phone but soon found an issue with the screen. Running the touch screen test (from *#*#6484#*#*), put my finger on the screen and there is a coordinates showing my finger's current position on the screen. I then move my finger very slowly on x axis, there is no change of the coordinates. If I keep moving then the coordinates suddenly start to jump to where the new location represents e.g. from 500, 500 to 550, 500 (skips 501, 502, 503... 549 on x axis). I have run similar test on my other phones (galaxy s5, s7, note 4) all have no problem , the coordinates change immediately if I move my finger.
How did I found this? I found this when I was playing fps games. When I slowly moved my finger to aim, the cross just doesn't move and if I keep moving my finger, it suddenly jumps.
Here is a photo, dx and dy on top of the screen shows how much movement i have made on the screen. I have tried to move to left, so dx is -51. I can't make a horizontal enough move so there is some movement vertically hence dy -10 . The issue is there is no way to make a movement less than that, say 1 (or -1). It doesn't register the tiny movement until at some point the accumulated movement is around 50 .
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Is this a faulty item or just design bug?

not sure how can i add an image? i tried a link from imgur, but it appears as corrupted.
Edit: ignore, i have figured it out.

What may be the problem if display is working but touch isn't?

Yesterday randomly my Op3's touch screen stopped working.
From the last one year or so, there is a little gap between the mobile's display and the actual device because of the display glue coming off but nothing major happened with the phone in 1-2 days that can result in t's touch not working. I would have gone to the OnePlus service center but it is currently closed due to lockdown.
Does anyone have any idea if this means my display panel is dead or some display cable got loose which resulted in touch not working (or anything else)? I am attaching two pictures of the phone to show you guys about the display gap I am talking about.
Note: The display works perfectly and the phone works perfectly too if I connect it to my laptop and remote use it by USB debugging. Also, the touch screen problem is not caused by an app as the touch screen is also not working in the recovery mode (TWRP). Any help will be appreciated.
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Screen and touch, display assembly is connected with only one cable on our device(navi buttons and fingerprint scanner are different). So if touch broken, probably it won't be able to repair. They will replace the entire screen.

Seems this thing happen to many people, i got it loosen in the same area as yours
They use double side tape which soften overtime+removing the phone from the case break it
Though my tc is fine because when i notice it i immediately glue it with standard tc glue instead using double side tape (much simpler, without opening the phone)