Related
Okay, now here's something related to hardware development for all you hardware tweakers
I know it's a noob question, but there hasn't (yet) been a post like this (until now).
Is it possible to take your Bravo apart and take another screen (with the same size and thickness, of course) and replace them?
I'm asking because I can't even play Slenderman on my phone, because of the buggy touchscreen (that only supports two points, and even those two glitch out!).
So, if I found a screen with the exact size and shape of my Bravo's and then replace it, would that work?
Thanks
First, desire supports only dual touch not multitouch.
When you say screen what do you mean, an LCD or touch screen (digitiser)?
Umm... I though a screen is just one block...
So, you're saying that there are two different parts I can buy...? And if I understand, one is the display, and the other is the thingy that detects touch input...?
Well, I'm just asking if there's a way to improve the touchscreen, because there's SO MUCH LAG and glitching! And since software can't fix that, I thought changing the hardware would help...
But since (obviously, as you say) the Desire only supports two touches (both from the software and the hardware part), there is no fix?
P.S.
Dude, how come you've ALWAYS got an answer for me? O.O You're like a freakin genius!
I'm Serbian...
For me my touchscreen works just fine, and most depends on which rom you use. I have Galaxy Tab 2 and I have to say that I'm more satisfied with screen calibration and usage on Desire.
Well then, which ROM makes the screen work best...?
Because on every single ROM, there's a glitch when I press on the screen with two fingers (in opposite corners) and then, if I swipe both fingers over either axis of the screen, there's a serious glitch, where my 1st finger controls the x coordinates of the second touch (and vice versa) and each finger controls the y coordinates of its' touch...
(if you understand any of that)
If I compare my Desire's screen to my friend's Samsung Galaxy S Plus, there's a BIG difference, one of the biggest are the ones where his doesn't glitch over an axis, and the other one being his screen supporting (at least) 5 fingers.
So, if the best solution is the ROM, what do you (oh, Great one) recommend?
I've tried MIUI, various stock versions, CM7, ICS (NikezLente and SpazeDog), and I'm currently on MildWild 4.3 final (based on Oxygen)... And all have the same issue...
I think you're asking too much...
So I'm either stuck with glitches or I buy a new phone (or go back to my (almost) broken Nokia)...
Or, I steal my friend's phone while we're on the bus and play slender there!
Mission accomplished
I bought my Nexus 7 2013 32gb model from Amazon and got delivered early before official local availability. I have noticed some touch problems in various apps (Pocket, Youtube, Chrome). I turned on developer settings and then turned on "show touches". When have problems it's like the touches are never registered. It's weird because its not consistent. I am considering sending it back for a replacement, but I have a friend who picked one up locally and has similar issues. I am wondering if this is a bug in 4.3 or something like that.
Any thoughts? Anyone else have this problem? RMA or keep it?
Flashing a different kernel could fix your problem as that is what bridges hardware and software.
Username invalid said:
Flashing a different kernel could fix your problem as that is what bridges hardware and software.
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Looking to remain stock at the moment. I figure if its a kernel/software problem google will release a fix fairly soon. If it's a hardware problem unique to a small number of devices like mine then I would like to RMA it.
Liquidretro said:
Looking to remain stock at the moment. I figure if its a kernel/software problem google will release a fix fairly soon. If it's a hardware problem unique to a small number of devices like mine then I would like to RMA it.
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Yesterday mine was fine and today when I was typing in landscape I was having the biggest problem getting the letter b to go through I actually would have to hold it for a brief second.... Then I restarted... And now bbbbbbbbbbbbbbbbbb.... Yup everyone goes through I have a feeling its a software bug but I'm staying unroofed till I know for sure ...
Sent 4rm my Nexus 7 2013... It feels and looks so sexy...
I'm having the same issues in chrome. I do tons of browsing and it seems about every 20 minutes I have to close out and restart the browser session. Anybody recommend another browser in the mean time?
zim2704 said:
I'm having the same issues in chrome. I do tons of browsing and it seems about every 20 minutes I have to close out and restart the browser session. Anybody recommend another browser in the mean time?
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dolphin does the same sometimes. i like NEXT browser
the screen seems to be too insensitive imo.
i tried on my old nexus 7 and nexus 4 to keep swyping between "n" and "d" in the stock keyboard, they register all the gestures without dropping in between. However in the new nexus 7, it often drops my gesturing if i don't press on the screen hard enough.
Kind of makes me wonder if it's the calice I have on my thumb from using lighter too much
Sent 4rm my Nexus 7 FLO... Only thing missing is O.G. N7's development...
I've noticed touch issues on my otherwise flawless screen (no dust, dead pixels, or multitouch issues other than this specific scenario) due to what I assume are grounding issues. I did some testing:
If I lay the tab flat on a table, and touch it with 1 finger, touches are only registered maybe half the time.
If I touch it with 2 fingers, no issues at all.
If I'm holding the tablet in one hand and touching it with 1 finger, no issues.
If I merely touch the case (not even the screen) with one finger while the tablet is flat on a table, and touch the screen with 1 finger, no issues.
Anyone else notice this?
My keyboard inputs letters that I don't physically touch at times when I'm writing a sentence so there definitely appears to be an issue with some units at least. I've never had this same problem on any other touchscreen device.
SubMatrix said:
I've noticed touch issues on my otherwise flawless screen (no dust, dead pixels, or multitouch issues other than this specific scenario) due to what I assume are grounding issues. I did some testing:
If I lay the tab flat on a table, and touch it with 1 finger, touches are only registered maybe half the time.
If I touch it with 2 fingers, no issues at all.
If I'm holding the tablet in one hand and touching it with 1 finger, no issues.
If I merely touch the case (not even the screen) with one finger while the tablet is flat on a table, and touch the screen with 1 finger, no issues.
Anyone else notice this?
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Yup, same exact situation here. I hope this is a software issue that can be fixed
Sent from my Nexus 4
Mine doesn't register touches sometimes... contemplating on exchanging.
Sent from my SPH-L720 using xda premium
dcaplinger76 said:
Mine doesn't register touches sometimes... contemplating on exchanging.
Sent from my SPH-L720 using xda premium
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Exchanging mine tomorrow.
Kills me, I had a 16gb with no issues at all, then earlier this week, exchanged for a 32gb and this one has touch issues! I also noticed right away that this 32 was noticeably more laggy due to a few milliseconds delay when I tap in one of the "bad" areas, which tends to be the top half of my screen.
Its been 2 weeks since i bought this tablet. I have a problem since then which is when i use touch screen, while scroolin up and down and stop without drawin my finger, page under my finger vibrates for a few pixels. For example while im using photoshop touch and crop someting to move with my fingers , that cropped piece starts to shake . Does this exist in all devices ? If its not im gonna take the device back to store . Is it a known problem that no one mentions about ? With pen everthing is cool but when I start using my fingers its shaky like 3 4 pixels.
http://forum.xda-developers.com/showthread.php?t=2619898
http://forum.xda-developers.com/showthread.php?t=2491690
http://forum.xda-developers.com/showthread.php?t=2646401
jep it's a very well known issue and pretty much everyone has it. People are pretty sure that it is a software bug that can be fixed in the next update though.
I'm going to wait until the next update hits and hope that it will be fixed, because otherwise the tablet is perfect. Otherwise I'll probably return it as well.
The capacitive touchscreen controller in these tablets attempts to provide touch coordinates that are as accurate as possible. when you place a finger on the screen, you arent touching a single point, but rather a number of points, for which the controller has to determine a center point. For capacitive screens, the calculation of this touch point can vary from one iteration of the calculation to the next as a result of subtle capacitance changes due to humidity, contact pressure, etc. if you load any of a number of test programs that output the touch coordinates, you'll see that they jump around by a few pixels.
What this means is that the driver for the touchscreen doesnt include enough deadband around the touchpoint to eliminate positional jitter. This can be corrected in the driver, but whether a software update will resolve it or not remains to be seen. If the jitter isn't acceptable, I would plan to return the tablet within your applicable return window, rather than count on a software update that may or may not address the problem. Samsung has been slow to respond to these kinds of issues, if they address them at all.
Sent from my SM-P600 using Tapatalk
dpersuhn said:
The capacitive touchscreen controller in these tablets attempts to provide touch coordinates that are as accurate as possible. when you place a finger on the screen, you arent touching a single point, but rather a number of points, for which the controller has to determine a center point. For capacitive screens, the calculation of this touch point can vary from one iteration of the calculation to the next as a result of subtle capacitance changes due to humidity, contact pressure, etc. if you load any of a number of test programs that output the touch coordinates, you'll see that they jump around by a few pixels.
What this means is that the driver for the touchscreen doesnt include enough deadband around the touchpoint to eliminate positional jitter. This can be corrected in the driver, but whether a software update will resolve it or not remains to be seen. If the jitter isn't acceptable, I would plan to return the tablet within your applicable return window, rather than count on a software update that may or may not address the problem. Samsung has been slow to respond to these kinds of issues, if they address them at all.
Sent from my SM-P600 using Tapatalk
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Very good point. The driver seems to try to be very accurate. One my older tablet (Acer A500) many times when using Chrome it would magnify the area where I touched as it couldn't really tell which link I had pressed. It seems with this tablet that almost never happens, almost as if the driver is trying to be as accurate as the pen. Sorry, my fingers are not that accurate! Maybe its a (incorrect) reaction to the high res of the tablet?
The driver should be averaging the touched area to get the touch point, but it should also give some kind of uncertainty so it doesn't seem unnaturally accurate (pixel width finger).
I should have tested this on the note 12 or the tab pro's at bestbuy last night...
dpersuhn said:
The capacitive touchscreen controller in these tablets attempts to provide touch coordinates that are as accurate as possible. when you place a finger on the screen, you arent touching a single point, but rather a number of points, for which the controller has to determine a center point. For capacitive screens, the calculation of this touch point can vary from one iteration of the calculation to the next as a result of subtle capacitance changes due to humidity, contact pressure, etc. if you load any of a number of test programs that output the touch coordinates, you'll see that they jump around by a few pixels.
What this means is that the driver for the touchscreen doesnt include enough deadband around the touchpoint to eliminate positional jitter. This can be corrected in the driver, but whether a software update will resolve it or not remains to be seen. If the jitter isn't acceptable, I would plan to return the tablet within your applicable return window, rather than count on a software update that may or may not address the problem. Samsung has been slow to respond to these kinds of issues, if they address them at all.
Sent from my SM-P600 using Tapatalk
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I agree. This is exactly how it looks like. I understand that the touchscreen needs to be as accurate as possible for the pen. But a simple solution or workaround would be to have a "pen mode" for when the pen is out and a finger mode while the pen is docked in the case.
I'm sure there will be a solution for this sooner or later, especially since samsung is releasing more and more devices with wacom digitizers and stylus. And it's more or an annoyance than a deal breaker for me. There aren't any situations where it keeps me from getting my work done or anything. It's just a little annoying sometimes.
And in my experience samsung is actually quite good with fixing things these days.
Thanks for replies! I guess its the driver too. Comparing with apple , yes they dont offer to much of feature but i guess they are best at what they offer and this is the only problem with samsung. Amazing features that we come across via samsung but no perfection.
Sent from my GT-I9500 using xda app-developers app
Hi everyone! I want to share this odd experience with the forum so we can disscuss about,
I've brought a second hand WinRT 8.0 VivoTab 600, it worked perfecly for 15 days and one day out of nowhere it started to not respond to commands and the touch screen went crazy so i odered another touch screen + Lcd form e-bay but when i fit new screen on the tablet the problem still reamin!
I can absolutely tell the screens are fully functional cos i tested both on another VivoTab and are working.
So i tryed to make one more test, to fit the screen and connect VGA flat only and not the touch screen ribbons to the Motherboard... And the problem still remain, ghost touch everywhere! the tablet is unusable! Only when i disable the touch screen driver Ghost touch issue stops...
What i could do? Upgrade to WinRT 8.1? Reinstall OS from SD? Throw it into the trash?
I've also tryed many many times system rerstore with touch screen disconnected... this is a software issue this i clear, what i can do now?
Thanks in advace.
Hi All!
I just got a new a70 5 days ago, it's performing very well, but i did notice one thing. Sometimes my quick touches when i just very quickly and barely touch the screen, the touch is not registered. I activated the factory diagnostic mode (*#0*#) and tested and got some interesting results. If i touch the screen quickly enough, the touch is not registered at all, even though i apply a substantial force. I can do this like 3-4 times out of 10 if i really try. I also tried it on my galaxy S5, and although I could reproduce the same issue, it was much harder to get it to miss a touch than on my brand new a70. I did try it with and without a screen protector and it didn't make any difference. I'm actually surprised, I didn't think I can touch the screen too quickly so that the sensor (or software?) fails to register it. My question is: is this an expected behaviour, or something that should be looked into? It doesn't really affect everyday use, but ever since i discovered this I'm now always having this weir feeling anytime i'm about to touch the screen that "is this touch going to miss?". So my questions are the following:
1. Is this behaviour normal?
2. Why does my S5 seems to be more "reliable" and is harder to get to miss a touch.
3. Is there a 'minimum touch duration' for these capacitive screens?
4. Anybody else who has A70 experienced this, could try it out?
(it was not very easy to reproduce at first. i started noticing it when i wanted to open messenger chats, that some of my touches missed. for the issue to be easily reproduced one would have to try and tap as quickly as possible, so that your finger touches the screen for the shortest time possible)
crazylachesis said:
Hi All!
I just got a new a70 5 days ago, it's performing very well, but i did notice one thing. Sometimes my quick touches when i just very quickly and barely touch the screen, the touch is not registered. I activated the factory diagnostic mode (*#0*#) and tested and got some interesting results. If i touch the screen quickly enough, the touch is not registered at all, even though i apply a substantial force. I can do this like 3-4 times out of 10 if i really try. I also tried it on my galaxy S5, and although I could reproduce the same issue, it was much harder to get it to miss a touch than on my brand new a70. I did try it with and without a screen protector and it didn't make any difference. I'm actually surprised, I didn't think I can touch the screen too quickly so that the sensor (or software?) fails to register it. My question is: is this an expected behaviour, or something that should be looked into? It doesn't really affect everyday use, but ever since i discovered this I'm now always having this weir feeling anytime i'm about to touch the screen that "is this touch going to miss?". So my questions are the following:
1. Is this behaviour normal?
2. Why does my S5 seems to be more "reliable" and is harder to get to miss a touch.
3. Is there a 'minimum touch duration' for these capacitive screens?
4. Anybody else who has A70 experienced this, could try it out?
(it was not very easy to reproduce at first. i started noticing it when i wanted to open messenger chats, that some of my touches missed. for the issue to be easily reproduced one would have to try and tap as quickly as possible, so that your finger touches the screen for the shortest time possible)
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Yeah the touch on this device is horrible. Don't listen to fanboys, this device has a couple of issues other than the touch screen having an awful response time.
Check:
+
The SD675 isn't well optimized for most games, so it lags in most of them, while on the A50's weaker processor, the Exynos 9610, games work just fine. Most of the time, they work better on the A50 than on the A70.
And there's another issue with dark colors being turned off instead of dimmed, because the screen doesn't know the difference between "dark" and "totally black". I'm gonna demonstrate this later by comparing the A70 and A50 side by side.
The A70 has a stronger CPU than the A50. The A50 has a stronger GPU than the A70. The A70 has better battery life.
That said, yeah touch problems. I notice it all the time when browsing. Trying to tap on small links are not registered most of the time. I have to zoom in.
I believe it to be a hardware issue that is not fixable in software.