Database Develop

graphical artifacts on my tab

Hello guys,
I have some strange artifacts on my screen. First time I noticed this was on youtube. it shows some strange picture tearing on the left lower corner of the screen. First I thought it was some glitch in youtube app, but later i discovered similar glitch in some flash video. I noticed that it's most visible in Anomaly HD, where allmost entire lower left corner somehow flickers. no other games or apps seem to have this kind of problem, 720p HW accelerated video plays like a charm
Is this problem caused by apps, or is it faulty tegra 2? Can I try another display driver? Anyone else encountered this kind of glitch?
I uploaded video captured on my Galaxy W - it's most visible on Anomaly HD

Try a custom from. If it does not work, you might have a messed up GPU

I am currently using overcome 2.3.1, but i had this issue on stock as well...what's bugging me is the fact that no other app or game I've tried seems to be affected
for example shadowgun, zen pinbal thd, modern combat 3...all those games are working with no problem...might as well wait for official ICS update and see if it helps.

ok another funny thing: after installing latest AOKP ROM this happens when booting (same thing happens in CWM recovery after installing CWM suggested in thread)
http://www.youtube.com/watch?v=jQp39SvzNtg&feature=g-upl
here is the original video, seems i somehow messed up inserting the link
http://www.youtube.com/watch?v=kyKITveorwY&feature=g-upl
EDIT:
i'm starting to thing there's something really wrong with my tab...this iswhat i have after applying motley kernel (no screen shifting on previous kernel)
Could my problem be somehow kernel related?
video:
http://www.youtube.com/watch?v=60_e1U7Bg8E&feature=g-upl
EDIT2:
seems like i'm not the only one
http://forum.xda-developers.com/showthread.php?t=1513949

I have this problem too. I see it in the lower left corner of the screen when scrolling through the video wall in the youtube app. If I turn the tab upside-down in landscape mode the flashing/tearing happens in the lower right corner of the screen. However, the problem does not seem to happen in the portrait mode at all.
I'm on stock unrooted rom.

Can you try flashing cm rom with latest recovery? I'm unable to flash latest build with my current recovery. If I flash recovery recomended in the cm tgread my screen starts to scroll from the bottom to the top. If I try to flash the rom with this new recovery same thing happens when booting...same goes with motley kernel as documented in videos above. Anyone else is having this problem? I can live with some screen tearing but that scrolling pisses me off...it makes newer cwm recovery unusable for me.
Sent from my GT-I8150 using XDA

It's just as esqauw said...when i turn tablet upside down bug appears on different spot ( right lower corner screenwise, left upper corner tabletwise ). I believe tis has to He somehow related to software, because it appears elsewhere on the screen...might be completely wrong off course. Any oppinions?
Sent from my GT-P7300 using XDA

someone has to know what to do about that sliding screen issue

Same here
I was about to link you my thread on this but I see you found it already. I have not looked into this for a few months.
For me the problem is inconsistent so it is difficult to test. Id think if it were a hardware issue then most if not all apps would be affected. Maybe the way the affected apps are writing to the screen is triggering it. Id also think more people would be reporting the problem.
Different roms don't seem to help which could point to hardware or some low level (lower than rom?) software cause. I watched your videos of the boot screens post kernal changes and I have not had that type of problem yet. But I have not rooted or tried other roms either. This may support the low level software cause.
Your information adds support to a software cause with the artifacts appearing in different parts of the screen when rotated. I think a hardware cause would mean a consistent location on the screen.
I cant find the threads now but Ive seen mention that Samsung's implementation of the screen and Tegra 2 on the 8.9 causes a performance lag in landscape that does not appear in portrait. The 10.1 does not have this problem. Maybe this is related to that. The lack of the artifacts in portrait mode would lend support to this.
I hope you find a fix but Ive resolved myself to living with it. Although, I should probably look at warranty options before it expires.
Good luck

What do the graphics look like on this free graphics benchmark app?
https://play.google.com/store/apps/details?id=com.aurorasoftworks.quadrant.ui.standard&hl=en

I get 2281 in quadrant. lt runs smooth with no problems or glitching. but it runs in portrait mode which does not appear to have the bug.
Given that bug does not happen in portrait mode I'm leaning toward the problem being the performance lag issue I mentioned above.

Same here
Sent from my GT-P7300 using XDA

Ok, so I have to clarified couple of things about lag and stuff.
1. I was played GTA 3 v1.3 with all the in-game setups at max and with frame limiter disabled. It has lagged as hell! Then, I switched the game to "Zoom to fill screen" and the game runs very very very smooth but the screen resolution became low. This is applied also to Asphalt 6 and other HD games.
2. The tablet runs smoothly in Portrait Mode. The stock launcher from 3.2 runs perfectly in portrait for me.
3. I tried to overclock up to 1.5 GHz and tried again to play GTA 3 with the option "Stretch to fill screen" and it LAGS! Tried with "Zoom to fill screen", no lag at all but screen resolution problem. Otherwise, is playable
I think all it's related to software. Hardware is quiet good. Maybe if we change the DPI the lag will dissapear, don't know

Jellybean seems to fix it
Well I tried the AOSP 10 beta 8 build and CM10 latest build and they both appear to have fixed the problem. AOSP seems a bit better performance wise so ill be sticking with that for the foreseeable future. I guess it was software after all.

I have the exact same issue with newly bought tab 8.9 on youtube app. and I didn't use alot of other apps but the apps I tried never had issues with the screen. The tab is all stock.
so, what we have concluded here is that it is a software issue or some hardware issue that should be taken care of by the warranty?!

Well it seems that it's software issue,because after flashing CM10 preview, those artifacts dissappeared.
Sent from my GT-P7300 using xda app-developers app

That's great news. But that leads to another question
Do all gtabs 8.9 have the same issue using HC 3.2? So that we can say that we have a software issue only? Or is the issue related to some faulty SoCs that may show these artifacts using stock software?
I just want to make sure that it is a software issue only as I think I can make use of the warranty at the moment if it is a hardware issue
Thanks for sharing the tip
Sent from my GT-P7300 using xda app-developers app

Getting a better look at this multitouch issue, with some good ol' community feedback

Hey guys,
Thought I'd post this here and keep you guys updated on further developments.
I live in the Netherlands and bought a 32GB version at Dixons at the 13th of November 2012
I had found the touchscreen a bit unresponsive sometimes in the past.
But couldn't really find out why it was acting up. I finally isolated the issue.
It is exactly the same as this guys vid:
(Thanks for the vid injahnet)
Together with a little backlight bleeding, I decided to send for repair.
(The problem persisted after a factory reset, no other apps were open when testing.)
I went back to Dixons and showed the problem to the Dixons dude.
He acknowledged there was an issue and sent it for repairs or replacement.
Due to the holidays this can take some time. Maybe even next year
I was about to open my tablet for a look inside one of these days, boy am I glad I didn't do that yet
Anyway to get a good view on this issue globally, are there more people that have the same issue?
You could go to: Settings > Developer options > and then under "Input" you can enable Show touches. and try to to the same procedure as in the vid. (Thanks Peterk-1)
Or you could test with MultiTouchTester like Injahnet.
The weird thing is, my dad's N7 16GB does the same.
Update 17-12-2012: Please do not test while plugged in as the device will be grounded and the issue will not occur. (Thanks dad)
Feedback is really appreciated!
Please vote in the poll above!
Cheers,
Daan

I have zero problems with multitouch while using my Nexus 7. Working just fine, but you must disable any apps which interfere with gestures or it'll steal events.
Can't say I've ever used multitouch with the N7 laying on a random object however.
But sure, send it in for repair......... I'll keep using mine.

If anyone thinks they have multi touch problems then loading an app isn't required. Just go into Developer Options and under Input you have two options to display touch and track detail.

peterk-1 said:
If anyone thinks they have multi touch problems then loading an app isn't required. Just go into Developer Options and under Input you have two options to display touch and track detail.
Click to expand...
Click to collapse
Nice one. I'll add that.
khaytsus said:
I have zero problems with multitouch while using my Nexus 7. Working just fine, but you must disable any apps which interfere with gestures or it'll steal events.
Can't say I've ever used multitouch with the N7 laying on a random object however.
But sure, send it in for repair......... I'll keep using mine.
Click to expand...
Click to collapse
I've done a factory reset before I tested No apps are open except MultiTouchTester
It's in for repairs

Well... Over 200 views. And only 4 votes, which includes mine
Community feedback is failing hard.
Anyway, I'll keep you guys posted on the repaired Nexus.
At the moment of writing we know that three people are having this issue.
I know someone else with a nexus I'll check if he has the issue too.
Cheers,
Daan

Yes, i have this problem. And only while device is laying on the table.

Wow, this is bizarre, thanks for pointing it out. I can confirm it happens when it's laying on my pillow, and doesn't when I'm holding it.

Thanks for the vote guys.
By the way, it seems obvious that the Nexus should not be plugged in while testing.
However I cannot test this 'cause mine is at the shop
Would anyone be willing to test?
I'll add that in the original post (+ a mention of your name and a thank you of course))
Cheers,
Daan

Mine was unplugged while testing.
Sent from my Nexus 7 using Tapatalk 2

if the two touch-points got the same X or Y coordinate my nex7 does only detect one of them. i don't think this is an issue.

herrrevo said:
if the two touch-points got the same X or Y coordinate my nex7 does only detect one of them. i don't think this is an issue.
Click to expand...
Click to collapse
However, zooming in Google maps for example will become quite difficult

Anyone try and see if taping the ground pin on the wifi antenna fixes the issue? This seams like a grounding problem.

ionstorm66 said:
Anyone try and see if taping the ground pin on the wifi antenna fixes the issue? This seams like a grounding problem.
Click to expand...
Click to collapse
Exactly! I was also thinking of this.
Do people who have this issue also have the flickering issue!?

ecoviws buttress
Just an FYI, I installed CM 10.1 with Trinty Seven. Now I get 10 touches on pretty much any surface.

I don't have a multitouch issue, but I do have an entire band on my screen which has stopped responding to touch at times. It all started when I let my tab shut down due to low battery. Initially, the Nexus 7 neither charged (when put on charging, obviously), nor did it boot up. After trying for several hours, somehow it started charging. And since then, sometimes certain areas of my touchscreen become unresponsive to touch. Since the band which is unresponsive is towards the upper part of the screen, using notifications becomes completely impossible. It keeps 'snapping back up' when I try to pull it down, cos while I am pulling it down, the notification tray encounters an unresponsive area, so it just goes back up. Called up Google and they will be sending a replacement device. All I am afraid about is that I have an 8gb version, and they would be sending an 8gb as well, so I hope it isn't refurbished or something, as Asus has stopped making the 8gig model.

I'm having an issue where the screen, ( mostly in a webpage or document,) starts moving up and down and zooming in and out without my input.
Sent from my Nexus 7 using xda app-developers app

Just tested this out and yes, my device is doing it too. Interesting. No other issues like screen flicker (except the auto brightness bug in 4.2). My n7 is c9O

DaanJordaan said:
Well... Over 200 views. And only 4 votes, which includes mine
Community feedback is failing hard.
Anyway, I'll keep you guys posted on the repaired Nexus.
At the moment of writing we know that three people are having this issue.
I know someone else with a nexus I'll check if he has the issue too.
Cheers,
Daan
Click to expand...
Click to collapse
community feedback is not failing hard, more like you're just starting a new thread without bothering to search if issue/topic already exist.
this isn't new and there is no fix, that is just how the touchscreen function. the N7 isn't the only device to have this.

dilldoe said:
community feedback is not failing hard, more like you're just starting a new thread without bothering to search if issue/topic already exist.
this isn't new and there is no fix, that is just how the touchscreen function. the N7 isn't the only device to have this.
Click to expand...
Click to collapse
Don't feed the trolls!
Must... not... feed... aaargh....
You are kinda missing the point of this thread.
It is to see how many people have this issue.
There is no thread capturing that in an easy way unless you want to count every post.
Now please tell your brain to start functioning again and leave this thread alone if you have nothing to add.

Asus Google Nexus 7 32GB touch death zone
Hi DaanJordaan,
Found out that my brand new N7 seems to have a similar "no touch zone" issue; an area the size of my little finger on the left lower part of my screen does not seem to react to touch! It interferes with typing the keyboard in portrait mode (no keyboard problems in up-side-down portrait mode).
When I use the Easylabs Multi Touch test I can see the dot changing color when I move over this area, doesn't happen anywhere else on the screen..
Using the developer tools (turning on the two options that allows to show touch/leave a trail of touch) it becomes even more clear that this area does not react to touch! I can "paint" lines around the "no touch zone" (it actually splits into 2 touch areas using one finger around the "death spot"), and the "no touch zone" reveals itself by not showing any trail/history line of touch..
Oh yes, and it does not matter if I lay the N7 on the table, or hold it in my hand, the issue is always there.
Therefore I returned the N7 back to the MediaMarkt, and they will send it in for repairs...
I've got a bad feeling about this | - )
I am curious to hear about experiences with your N7, once you have it back!
I'll report mine here, in three weeks or so (that's the outlook...).
Cheers!
NeverMind

[Q] Note 3, Google Maps, & Arrow Pointer

All
I've been having a really annoying issue with my Note 3 and Google Maps: the dot-arrow that shows my position is pointing in the wrong direction. Yes it does track me per the gps location but the issue is that as I am driving instead of the screen moving from up to down, usually along the length-wise direction, it moves at an angle or across. The only option I have is to hit the location button so that I can always have the top be North. That's not as good as having the heading pointing to the location of travel. Now, I calibrated and recalibrated the compass with GPS Status App (turns around the axes and figure eights) which seems to have worked for some, I have restarted numerous times even after turning on/off location-based services. I have cleared the cache and the google maps data. I have reinstalled it. I have even checked the compass versus real settings - seems to be pointing in the right direction. I still have the same issue. This is very frustrating and disorienting when driving. Looks like a crab moving angled to sideways across the screen.
I am on the latest Stock KitKat 4.4.2 version and Maps 7.7.0.
So, does everyone have this issue? Does anyone think is is a unique configuration issue? Is this a google maps issue? Any thoughts on how to fix?
PS...other Map Apps seem work fine (but like to use Google Maps due to the excellent traffic option)

If other apps seem fine, it might be Google maps. I don't have that issue, but I use Google maps version 6.14 (the old style with location arrow). The note 3 is notorious for all of its gps issues, but if you have good signal and it doesn't cut out then all I can think of is that GMaps is the culprit.
Sent from my SAMSUNG-SM-N900A using Tapatalk

I noticed this issue too! I believe it has to do with being inside a vehicle. The metal may be interfering with the gps signal. If I sit in my car and hold my phone so it points north, the arrow points south. If I open the door and step out (while still pointing north) the arrow magically flips! I can fix it by doing figure 8's in the car, but what a pain!!

Well, I do agree it is a google maps issue. I wonder if I can install older version to check. It only recently happened to me. I do not think it is an in-car issue because I never had the issue before when I was navigating in the car. Will come back if I can side load an older version of gmaps.
By the way, this issue is all over the internet but none of the foxes suggested seem to work for me.

No luck in getting it fixed. Did back down to earlier version of 7 but still had the same issue. Driving me nuts.

navfree... can preload maps but just uses google search for most things. some things arent great but its getting better. ive had the same issue with google maps. its been super sporadic. not a deal breaker...

So excited when I started reading this thread, figured someone would have a solution...lol Had this problem ever since my GSII Skyrocket, the gps works great but the direction is always off in my car... Can't understand what the problem is. Done the calibration to no effect... Hopefully someone who knows how to fix will pop in and steer us in the right direction...lol

I'm also waiting for a fix for this..
Ever since 7.0 "update" its been like this. I tried everything but no luck.
I'm using Exynos Note 3.
I was using an HTC EVO 3D when I recieved thr 7.0 update. Before it was fine but after the update even my HTC started doing the arrow pointer bug, and its still happening on my Note 3 even after the yesterdays maps 8.0 update. So I'm thinking this is all Google's fault but nobody is admitting anything.

Hit *#0*# , then select sensor, little black compus will have red line in middle on bottom left of screen. Shake phone vigorously, line will turn green..... This will fix that issue;however, if you reboot phone, you will have to do this again.
Hope this helps someone.
Sent from my SAMSUNG-SM-N900A using XDA Premium 4 mobile app

wilowolf666 said:
Hit *#0*# , then select sensor, little black compus will have red line in middle on bottom left of screen. Shake phone vigorously, line will turn green..... This will fix that issue;however, if you reboot phone, you will have to do this again.
Hope this helps someone.
Sent from my SAMSUNG-SM-N900A using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Any solution that needs to be applied again after a reboot is not a solution at all (nothing against you, just frustrated at no solution).
I have the same issue as the OP, and GPS status app fixed it, but I lose the fix after a reboot. This is unacceptable and I don't think it's just a few of us experiencing this issue.
Could more people post and say whether they have this issue and if not, how they fixed it?

wilowolf666 said:
Hit *#0*# , then select sensor, little black compus will have red line in middle on bottom left of screen. Shake phone vigorously, line will turn green..... This will fix that issue;however, if you reboot phone, you will have to do this again.
Hope this helps someone.
Sent from my SAMSUNG-SM-N900A using XDA Premium 4 mobile app
Click to expand...
Click to collapse
The issue seems to be resolved by this. I only have to rotate the phone horizontally a couple of times after a reboot and pointers works just fine.

Touchscreen or Software Issue?

Hi guys! I just upgrade from a Nexus 5 to S6 Edge. I am having an issue with this new phone not sure if it is affecting everyone or just me... :/
I am having an issue to swipe on some applications. One of the application is Swiftkey. I find it very hard to swipe to delete whole word. (You need to have Swiftly Flow disabled.) My music player (ZPlayer) i also hard it hard to swipe to skip songs as well. Is it just me or everyone is having this issue? I have used those touchscreen tester application and find my touchscreen to be fine.

tanjiajun_34 said:
Hi guys! I just upgrade from a Nexus 5 to S6 Edge. I am having an issue with this new phone not sure if it is affecting everyone or just me... :/
I am having an issue to swipe on some applications. One of the application is Swiftkey. I find it very hard to swipe to delete whole word. (You need to have Swiftly Flow disabled.) My music player (ZPlayer) i also hard it hard to swipe to skip songs as well. Is it just me or everyone is having this issue? I have used those touchscreen tester application and find my touchscreen to be fine.
Click to expand...
Click to collapse
Hey man, I'm having the same problem, definitely a software issue as I tested the screen via *#0*# and it's working.
Any updates on your end?

negative13 said:
Hey man, I'm having the same problem, definitely a software issue as I tested the screen via *#0*# and it's working.
Any updates on your end?
Click to expand...
Click to collapse
No solution so far but just living with it... I am surprised that this matter is not noticed by many users yet. :/

Had a problem with swipes being interrupted and taps registering multiple times. Got the screen replaced through warranty and the problem is gone. The problem seemed to be caused by pressure making the digitizer make contact with some other part causing erratic touch response.
Sent from my SAMSUNG-SM-G925A using Tapatalk

Touch issues / Sensitivity issues after Nougat update

Okay so I wanted feedback regarding this whether someone else is experiencing this or not.
I have gradually observed during the last few days that a lot of my touches to click have gone unresponsive in Nougat. Initially it was something that I hadnt quite noticed but slowly the trend became obvious. Now dont get me wrong, this would happen a few times here and there with lollipop and MM as well, but the rate is far higher now on Nougat. Especially when typing on the keyboard this means mis-spelled words, missed letters, and accuracy is far worse now.
Has anyone else observed this or is it just me?

Just got my xcover 4 with nougat installed i have the same issue.
The sensitivity is low and i need to press a bit higher finger force to respond.
Even with sensitivity (glove mode) set to on things get worse.

I'm seeing the same thing. What is strange is that I'll see the button highlight/depress, but no action occurs. This is on multiple apps.

On what device/OS?

Sprint Note 5 on Nougat

Did you try gloves mode? Does it work?

the same for me on 920cd and the same iusse using S pen

I contacted samsung Greece about the existing problem.
I reported the problems me and you guys have and the tech support told me that your problems exist because you did not factory reset the devices before upgrading to nougat.

Anyone tried to contact samsung about the problem?
They dont know anything about it.

facing same issue screen lagging in note 5 sm-n920s also tried custom rom but still lagging in typing and scrolling on facebook

I have the same problem on my xcover 4 here!!
When I run the the touch screen test, touch screen responds well, but when I want to write a message or to scroll the home screen Its very annoying. It looks like software problem.
please help

Hi guys.
I have 2nd piece of Xcover 4 SM-G390F (first was change by seller for new one) and had the same problem. First 2-3 days all work perfect.. I have installed my applications, work perfect for two days, but after this... --After wake, display react only in centre area, 1 centimeter from display border no reaction or react on xxx touch. After few seconds (20-30) display react on full range, but with lags... So... I go for support to Samsung official at CZE.
Support tells me, that they don't know about this problem, that I'm 1st who has this problem... And some other bull... about unofficial sell and any other. So I post them IMEI and they let me know, if my distribution is official or not, and we'll see what next. They recomend me to go to service center, where somebody looks on my SM. So I see tomorrow.
ROM - official Android 7 Nougat from start using (not updated from other version)
Deleting apps - no effect
Safe mode - no effect
Factory reset - no effect
Apps to calibrate screen - no effect