The touch screen started to go absolutely bananas this week. To the point of calling ASUS for an replacement.
1st, The screen would make phantom clicks when pressing on the bezel (by the bottom). It would also do the same thing when opening and closing the screen (when connected to the keyboard).
Later, the same day, a 1" strip (top 2 bottom) in the screen lost all touch sensitivity. Could not scroll or type on the on-screen keyboard.
Then, the main area of the screen stopped working (but the bottom tool bar would still work). However, if you removed and reinsert it into the keyboard... It all came back.
Thinking it is a hardware issue, I called Best Buy, then ASUS and requested a replacement. While waiting on hold, I ran "Settings > Backup & rest > Factory Data Reset" and after it reset and lost everything, the problem went away and has been working GREAT! for the last 3 days.
Then today, I found a guy at work says his Nexus 7 had the same problem (un-responsive strip down the middle of the screen). So now I'm thinking it might be a Tegra 3 thing. perhaps a driver issue.
Anyway, I wanted to posting it here in case anyone else is suffering from the same thing.
Your problem sounds like premature hardware failure... I'd get another tablet just to be safe. My touchscreen quirks consist of oversensitivity. When scrolling up and down it'll zoom in and out.. mostly when reading using ezpdf reader, Kindle app, repligo PDF.. its all the same. I'm on my third tf700 by coincidence they've all been C7 's... a touchscreen firmware update is needed or I think I'm going to unlock the paranoid android ROM. It has a touchscreen sensitivity adjustment built in.
Sent from my SPH-D710 using Tapatalk 2
Related
After updating to 3.2, I noticed that the touch screen has a ton of bugs. I used this program to check the inputs (I can't post links now due to forum restrictions):
Multitouch visible test
Basically if I scroll from far left to far right (Asus logo on the top left of my view), there is always a cutoff somewhere on the screen.
I never or hardly ever notice this problem when I'm in 3.1.
Any ideas on how to fix the problem? Or is it just 3.2 that has this and I should go back to 3.1?
Help is totally appreciated. Thanks!
Update:
Sent in the TF to Asus (to Ontario Canada) on August 9, 2011
Received it back from Asus on August 29, 2011 via UPS
Problem: they only reloaded the OS and did NOT test the touch screen so I have the exact SAME problem... Requesting RMA again
Can you grab a video of the issue?
Plonk it on youtube and then stick the url on here.
Cheers
Video is at youtube:
www(dot)youtube(dot)com/watch?v=ukdzYMKYtFE
Basically a portion of the screen does not respond to touch, and the classic turning screen on and off does not fully solve this problem.
had this problem before 3.2.
my screen have only small places..quarter of inch, random places.
noticed this only after rooting. and with some kernels more than others.
have you rooted?
No root. All stock since I am too lazy to do anything other than install apps, view video and manga.
blastdabomb said:
Video is at youtube:
www(dot)youtube(dot)com/watch?v=ukdzYMKYtFE
Basically a portion of the screen does not respond to touch, and the classic turning screen on and off does not fully solve this problem.
Click to expand...
Click to collapse
Quality vid there, top notch.
Have you tried a hard reboot?
And a restore to factory default settings?
For some reason that sounds sarcastic there... but the video was taken by a Desire HD so it's not that good quality. It conveys the point (I hope).
Haven't tried hard reboot or factory default settings because that would mean I have to reinstall stuff and re-setup things like gmail.
Lol dude, i wasnt being sarcastic, for some reason i was expecting some half-assed effort.
Hard reset shouldnt wipe your data.
Hard Reset:
Unplug the power cord and shut the unit off and Press and Hold the power button and the "Down" volume button together for 6-10 seconds and let them both go. After a few seconds you should see a couple of shapes in the middle of the screen called "Wipe Data" and "Android". Wait a few more seconds until the term "Cold Boot" appears in the list near the top of the screens and just press and release the "Down" volume button again and let it reboot. If you own the dock be sure and do this with the dock connected.
Sorry man, I guess my sarcasm detector is pretty off today.
I tried the hard reset and the same problem persists. I will have to see how this can be fixed though (I see that many people have similar problems though).
Thanks for your help =)
might be worth giving asus a tinkle and see what they say.
Got my US TF700T couple of days ago. It seems that every few minutes or so it sporadically detects touch in the lower right corner.
It's not exactly the same spot - sometimes it's lower and opens notification bar, sometimes it's higher and usually results either on opening shortcut that is their or clicking on the link in browser. I could not find anything that would cause it.
It seems that someone else reported similar problem in Amazon review.
So does it sound like a defect that requires a return? Does anyone else have the same problem?
alexnoalex said:
Got my US TF700T couple of days ago. It seems that every few minutes or so it sporadically detects touch in the lower right corner.
It's not exactly the same spot - sometimes it's lower and opens notification bar, sometimes it's higher and usually results either on opening shortcut that is their or clicking on the link in browser. I could not find anything that would cause it.
It seems that someone else reported similar problem in Amazon review.
So does it sound like a defect that requires a return? Does anyone else have the same problem?
Click to expand...
Click to collapse
I've read about something like that on the tf300t forum if my memory doesn't trick me and that user used a multitouch testing app to caught the issue on video. If a factory restore doesn't solve the issue i would say that asking for a replacement unit is the best way.
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
i haven't had any "unintended touches" problems on the tablet* but i do sometimes have problems where in that lower right corner it's very hard to get it to register a touch. this seems to be a software problem thoug - as it comes and goes and a cold boot always fixes it (warm boot usually does). i'm hoping when i jump from 21 to 26 (or whatever it is when i have time to do it - auto-update not working, even after CM and DM cold-boot and process kills) it'll "go away".
IMPORTANT: if you experiment with touch sensitivity by bringing your finger close to the screen slowly you'll figure out how damn sensitive it is when you're even still a ways away from touching the glass. it MAY be the fact that your right thumb is creating those unintended sporadic touches. FYI/FWIW/YMMV.
Doody
* the touchpad on the dock/keyboard is HUGE prone to phantom touches - especially from my left thumb. i finally had to turn the touchpad off so i could use the keyboard!
MrDoody said:
i haven't had any "unintended touches" problems on the tablet* but i do sometimes have problems where in that lower right corner it's very hard to get it to register a touch. this seems to be a software problem thoug - as it comes and goes and a cold boot always fixes it (warm boot usually does). i'm hoping when i jump from 21 to 26 (or whatever it is when i have time to do it - auto-update not working, even after CM and DM cold-boot and process kills) it'll "go away".
IMPORTANT: if you experiment with touch sensitivity by bringing your finger close to the screen slowly you'll figure out how damn sensitive it is when you're even still a ways away from touching the glass. it MAY be the fact that your right thumb is creating those unintended sporadic touches. FYI/FWIW/YMMV.
Doody
* the touchpad on the dock/keyboard is HUGE prone to phantom touches - especially from my left thumb. i finally had to turn the touchpad off so i could use the keyboard!
Click to expand...
Click to collapse
I just upgraded to 26. It seems lot better. Watched a video for an hour and not a single sporadic touch. I actually enabled developer option to show screen touches. I don't see any excessive sensitivity. My issue was purely random and not related to fingers position. I will continue testing with 26 for few days to decide whether it worth keeping the tablet.
Hey guys,
Had my transformer for 2weeks now and loving it. However recently (first noticed it 2 days ago) the notification bar has randomly started opening itself. It doesnt happen on a regular schedule -sometimes it will happen 3 or4 times in a couple of minutes, sometimes only once or twice an hour but not less often than that.
It happens even when im not touching the tablet at the time so i dont think the screen accuracy/calibration would be causing it.
I have turned it off and off a number of times to no avail and Ive also tried a factory reset and even with no additional apps installed it still happens.
Finally ive tried it both with and without sd card in and it happens in both situations.
Oh, and the dock connector being attached or unattached doesnt stop it either.
Has anyone heard of this happening before and or have any ideas to solve this problem?
i get this too all the time. i'm not touching the screen and the notification pops up for no reason. sometimes apps open up randomly too, for example i get an email notification and the email app opens. very annoying when plugged into a projector whilst giving a presentation.
somebody must be able to help. I'm not rooted by the way and have no intention too.
Sounds like a hardware problem - the touchscreen registering fake touch events. Check for mechanical stress in the lower right corner.
Update
I probably should have added, like yours mine isn't rooted.
I also turned on the developer options for touch detection, and it's definitely detecting "phantom" touches in the bottom right corner so definitely hardware not software issue.
Unfortunately, yesterday I started having issues with the touch screen being unresponsive in the right third or so of the screen, so I've called Asus this morning and am RMAing the tablet anyway.
I'd suggest you do the same rob if it's still in warranty, in case its a prelude to larger issues like mine was.
interesting thanks both. i was weighing up an rma because my keyboard dock is getting very loose, letting the top of tablet move about an inch without hinge moving. i've turned on show screen taps and already seen one. thanks again.
I had issues with my Asus TF700t that quite often it did not react on touch gestures.
And on the home screen the "change backround" dialog opened sometimes without any touch on the device.
This happend very very often when it was in the dock, but also without the dock (less occurence).
Now i know that the reason are ghost touches. By the usage of touch test apps (e.g. "Simple Touchscreen Tester" oder "Yet Another MultiTouch Test") i realized the ghost touches.
This touches are recognized always on the same coordinates. The multitouch test app detects 4 fingers on the same y-axis.
When the tab is in the dock and i open it completely to the maximum the two bolts from the dock are pressing very strong to the background of the screen glass. This is causing the ghost touches.
I opened the tab and tried to find what could be wrong (especially on the area where the touches are detected).
Anyhow i could not find anything. The only thing i noticed was the on the y-axis of the ghost touches the screen is fixed on the left and the right.
I check everything else closed the case ... but the ghost touches are still present.
Any idea how to fix the issue??? Who else realized the same issue???
Attached some screen shots from the touch test apps.
mr_cg said:
I had issues with my Asus TF700t that quite often it did not react on touch gestures.
And on the home screen the "change backround" dialog opened sometimes without any touch on the device.
This happend very very often when it was in the dock, but also without the dock (less occurence).
Now i know that the reason are ghost touches. By the usage of touch test apps (e.g. "Simple Touchscreen Tester" oder "Yet Another MultiTouch Test") i realized the ghost touches.
This touches are recognized always on the same coordinates. The multitouch test app detects 4 fingers on the same y-axis.
When the tab is in the dock and i open it completely to the maximum the two bolts from the dock are pressing very strong to the background of the screen glass. This is causing the ghost touches.
I opened the tab and tried to find what could be wrong (especially on the area where the touches are detected).
Anyhow i could not find anything. The only thing i noticed was the on the y-axis of the ghost touches the screen is fixed on the left and the right.
I check everything else closed the case ... but the ghost touches are still present.
Any idea how to fix the issue??? Who else realized the same issue???
Attached some screen shots from the touch test apps.
Click to expand...
Click to collapse
Sounds like you have a digitiser hardware issue to me. Had the same on my Surface RT. Only fix was to get it replaced.
Yeah, I just got mine back from warranty digitizer recalibration.
tapatalkin'
Another TF700T here that just returned from RMA with digitizer repair. Went very smoothly for me and I have a TF700T that again works extremely well.
Do they replace parts or just recalibration? Is it possible to so this myself?
I have unlocked bootloader and i do not know if they will repair it without any problem. Any experience on this?
Hi,
First, sorry for my english...
Second, I have same problem since saturday 24 august with my TF700T. Buy november 2012.
I tried to updated to android 4.2 But it didn't solve my pb.
I try "Multi Touch test" app and I observed same problem than mr_cg. Thanks for your good description "Ghost touch"
Ghost disappear when i unplug and re-plug dock, (some time two or three time) but just for some second ...
mr_cg said:
Do they replace parts or just re-calibration? Is it possible to so this myself?
Click to expand...
Click to collapse
I would like to do so myself.... because i don't want send my tablet to asus and waiting infinity... any idea?
mr_cg said:
I have unlocked bootloader and i do not know if they will repair it without any problem. Any experience on this?
Click to expand...
Click to collapse
If you are root, you can perhaps try this app:
ILITEK Touch Utility
or
(less chance i think, it did for S2,S3) TouchScreenTune
Me i am not root, but if it is working for you, perhaps i will try to be.
Thanks for your help
Termajik said:
If you are root, you can perhaps try this app:
ILITEK Touch Utility
or
(less chance i think, it did for S2,S3) TouchScreenTune
Click to expand...
Click to collapse
Thanks for the hint. I tried the apps, but both do not solve my issues.
ILITEK ... descriptions sounds good, but unfortunately not working (i get always "access denied" even i have root for sure).
TouchScreenTune ... Based on description it should be also good tool to reduce/improve situation with ghost touches. Anyhow ... it is not working with TF700t.
I am just thinking if i should open the case again???
If with root permissions you don't find solution ... I think i should call Asus support for my first RMA..
snif snif.
Thanks for your return. I win a lot of time.
Same issue
I'm having the same issue here, but only when docked. Seems like I'll stop using the dock since I am out of waranty because I unlocked the bootloader ...:S
I've been having a similar issue very badly on the right side of my screen, it was practically unusable. I am also out of warranty because I'm unlocked. What I did to make it at least somewhat usable was go into the build prop and change my max touch screen events from 200 to 4, and changed my touch sensitivity from .001 to 1 (this setting may have only been available on CROMI. Anyway, now my touchscreen doesn't work on the right side, however it does work everywhere else, and most importantly I can still use the tab as a laptop in its dock. It's a bumm it doesn't work right, but it's better than a total loss!
Sorry guys, it is a failed design problem due to connection to the touch screen. see my post in the "so i took it apart" thread.
Cost me a ruined lcd screen to figure it out
Ghost touches
mr_cg said:
I had issues with my Asus TF700t that quite often it did not react on touch gestures.
And on the home screen the "change backround" dialog opened sometimes without any touch on the device.
This happend very very often when it was in the dock, but also without the dock (less occurence).
Now i know that the reason are ghost touches. By the usage of touch test apps (e.g. "Simple Touchscreen Tester" oder "Yet Another MultiTouch Test") i realized the ghost touches.
This touches are recognized always on the same coordinates. The multitouch test app detects 4 fingers on the same y-axis.
When the tab is in the dock and i open it completely to the maximum the two bolts from the dock are pressing very strong to the background of the screen glass. This is causing the ghost touches.
I opened the tab and tried to find what could be wrong (especially on the area where the touches are detected).
Anyhow i could not find anything. The only thing i noticed was the on the y-axis of the ghost touches the screen is fixed on the left and the right.
I check everything else closed the case ... but the ghost touches are still present.
Any idea how to fix the issue??? Who else realized the same issue???
Attached some screen shots from the touch test apps.
Click to expand...
Click to collapse
What a great thread! Thanks, I've posted this elsewhere but having just send my TF700 back to ASUS I now have a pretty good idea of what might have been wrong with it. Here's what I posted and what I've told them anyway. I've overlooked the Ghost touches unfortunately, so I will let them know that (if they don't already)......any comments welcome...
Asus Transformer S/N D20KAS016975
I've struggled with this tablet since purchase in April this year, not being at all familiar with tablets I did not know whether it was just me, the general setup, or the tablet itself at fault. Most certainly the performance is not satisfactory. I have done three 'Factory Resets' and numerous Soft Resets.
Intermittently, the tablet will scroll and flash through various apps, when I open it. Originally File Manager would open itself up, then I got the feeling the Weather app would upset things. Sometimes a browser would make it do the same. Then I tried various Launchers, but the best of them (I think) sometimes shows the menu unannounced. Same thing, on and off until I intervene.
It is also prone to do this just sitting open by itself.
Clearing the caches sometimes fixes this. Sometimes this will stop by itself, other times I need to either close the lid, press the lock button, or turn it off. Then it will be OK.
At times Gmail will scroll randomly through the accounts, messages, labels etc.
Every browser I've tried will sometimes shut itself off, especially if I try to type something into a message box, usually when I've spent some time doing this!
Occasionally I can feel a slight tingling sensation when I'm lightly touching the back of the screen.
One other thing: When left overnight the mouse doesn't work and the tablet needs to be turned off and on again for the mouse to work. I also think the screen doesn't turn off sometimes (can see a light).
At other times the whole thing works just fine.
Hope this helps.
Regards
Grant
Tablet arrived back this morning
GrantCC said:
What a great thread! Thanks, I've posted this elsewhere but having just send my TF700 back to ASUS I now have a pretty good idea of what might have been wrong with it. Here's what I posted and what I've told them anyway. I've overlooked the Ghost touches unfortunately, so I will let them know that (if they don't already)......any comments welcome...
Asus Transformer S/N D20KAS016975
I've struggled with this tablet since purchase in April this year, not being at all familiar with tablets I did not know whether it was just me, the general setup, or the tablet itself at fault. Most certainly the performance is not satisfactory. I have done three 'Factory Resets' and numerous Soft Resets.
Intermittently, the tablet will scroll and flash through various apps, when I open it. Originally File Manager would open itself up, then I got the feeling the Weather app would upset things. Sometimes a browser would make it do the same. Then I tried various Launchers, but the best of them (I think) sometimes shows the menu unannounced. Same thing, on and off until I intervene.
It is also prone to do this just sitting open by itself.
Clearing the caches sometimes fixes this. Sometimes this will stop by itself, other times I need to either close the lid, press the lock button, or turn it off. Then it will be OK.
At times Gmail will scroll randomly through the accounts, messages, labels etc.
Every browser I've tried will sometimes shut itself off, especially if I try to type something into a message box, usually when I've spent some time doing this!
Occasionally I can feel a slight tingling sensation when I'm lightly touching the back of the screen.
One other thing: When left overnight the mouse doesn't work and the tablet needs to be turned off and on again for the mouse to work. I also think the screen doesn't turn off sometimes (can see a light).
At other times the whole thing works just fine.
Hope this helps.
Regards
Grant
Click to expand...
Click to collapse
Tablet arrived back this morning and seems all OK. Report indicates they replaced the LCD panel (new) & replaced the touch controller board (also new). And did various tests. Good service I think, no fuss. I'll let you know how it's going in a few days.
GrantCC said:
Tablet arrived back this morning and seems all OK. Report indicates they replaced the LCD panel (new) & replaced the touch controller board (also new). And did various tests. Good service I think, no fuss. I'll let you know how it's going in a few days.
Click to expand...
Click to collapse
Grant,
Was your tablet still under warranty? Did they charge anything? I wonder if they redesigned the digitizer connection or just put a new screen which will wear out as well. The digitizer connector runs along the bottom left of tablet screen. Same area is being pressed when you close dock, which wears it out.
You can go to developer settings and enable "show touches" (lowers tablet performance) then press on the bottom left edge of the screen, roughly 1/3 point of its length, and see if you get the ghosts to appear.
Warranty
dankens said:
Grant,
Was your tablet still under warranty? Did they charge anything? I wonder if they redesigned the digitizer connection or just put a new screen which will wear out as well. The digitizer connector runs along the bottom left of tablet screen. Same area is being pressed when you close dock, which wears it out.
You can go to developer settings and enable "show touches" (lowers tablet performance) then press on the bottom left edge of the screen, roughly 1/3 point of its length, and see if you get the ghosts to appear.
Click to expand...
Click to collapse
Yes, still under warranty (problem was there from day 1 although I didn't realise it at the time) and no charge. See attached pdf Customer report. Shows replacement Led panel, & controller board. No sign of ghost touches so far, and really working well actually. Early days yet, but I also note elsewhere in these forums someone mentioned their tablet not working properly 'upside down'. I neglected to mention it earlier but upside down isn't as funny as his respondents made out. I use mine often lying on the couch watching TV, with the tab upside down. Reason I mention it now is that mine acted up in those circumstances too. Anyway, that's fixed too.
Hey there,
so far, i am pretty happy with my S7. But there is one thing that is kind of worrying to me. On the lower end of the screen there seems to be a much less touch-sensitive area forming a horizontal stripe going form almost full left to full right. Its less noticable when i remove the screen protector (0.3mm 9h glas) but still there, and with the screen protector applied i consistently fail to hit the lowest row of keys on any keyboard app.
Question is, can this be a software-related issue and be fixed with an update, or is this a case of faulty hardware and should therefore be RMAed? Or is there something else i can do?
Things i tried: Factory reset, TSP-update via code *#2663# (which said "pass" but didnt change anything like version numbers), cleaning the screen, removing protector (which mitigated the problem, but its still there)
Its me again, with updates.
I have returned my S7 and got a new one. Funny thing is - its a completely different unit (different IMEI and S/N, seal wasnt broken upon arrival) and yet it shows exactly the same problems.
Can some of you please test the following: Using the stock Samsung keyboard, try to tap the spacebar right on the lower border. If i tap below the spacebar, it gets pressed. if i tap above the lower border of the spacebar, it gets pressed as well. But tapping right on the border will allow me to touch the screen surface without any signal registered. The keyboard is just for the height reference - from almost far left to almost far right this height is almost dead for finger touches - using a pen diminishes the problem.
Can some of you please try the same? Please check the height upon which your touches in that height get registered. Since i have gotten two phones with the same problems i suspect its a software problem and thus should apply to more people than just me. I have the SM-G930F Exynos.
TheBandicoot said:
Its me again, with updates.
I have returned my S7 and got a new one. Funny thing is - its a completely different unit (different IMEI and S/N, seal wasnt broken upon arrival) and yet it shows exactly the same problems.
Can some of you please test the following: Using the stock Samsung keyboard, try to tap the spacebar right on the lower border. If i tap below the spacebar, it gets pressed. if i tap above the lower border of the spacebar, it gets pressed as well. But tapping right on the border will allow me to touch the screen surface without any signal registered. The keyboard is just for the height reference - from almost far left to almost far right this height is almost dead for finger touches - using a pen diminishes the problem.
Can some of you please try the same? Please check the height upon which your touches in that height get registered. Since i have gotten two phones with the same problems i suspect its a software problem and thus should apply to more people than just me. I have the SM-G930F Exynos.
Click to expand...
Click to collapse
I have the same problem in the video posted at the bottom of this thread
http://forum.xda-developers.com/galaxy-s7/help/s7-flat-unresponsive-touchscreen-t3343175
I have also noticed this problem. It all started out when I noticed I was making a lot more errors when texting. I'm coming from an S5 so the screen size wasn't the issue.
I then started tapping towards the bottom...space bar... period etc and sometimes it would miss. I could tap for like 20 times, and maybe there are 5 consecutive times that it didn't register.
May forum staff merge the 2 threads please?
It would also be great to have an official news in homepage with an official statement from Samsung about this issue
Inviato dal mio SM-G920F utilizzando Tapatalk
FINALLY Found a solution !!!
For those of you having this problem that sometimes the S7 or the S7 edge doesnot register touch somewhere near the bottom right area of the screen:
I (and i suppose most of you) had tried all the solutions like wiping cache, factory reset, soft reset, *#2663# and what not. None of them worked.
Now, the solution is, when this problem occurs, turn off the screen and press the Phone hard on the right hand side of the phone. Like the right half of the phone has got paralised, press it hard, squeeze it. Like, place it on the table or a soft surface and press with the thumb. 3 or 4 presses hard enough on the right hand side from the top to the bottom. And Voila, the problem is gone.... Enjoy your phone. The problem does come back randomly and do the same thing. It works instantly.....