[Q] Poor UI response or stray capacitance? - Nexus 7 (2013) Q&A

I've very occasionally had intermittent problems with responsiveness which I've being trying to track down for a while ...
At first I thought it might be a thread choking the CPU but often while experiencing UI difficulties there was barely enough activity to keep a CPU activity widget moving.
By luck one day I was using the tablet in bed resting on the duvet and the problem occurred, it continued to the point of not being able to unlock even after a reboot and a power cycle...
Thinking the tablet was broke I picked it up and it started working put it back on the duvet and it began misbehaving again.
While its very difficult to replicate placing the tablet on the duvet without holding will often cause the problem - which can some times happen when you are holding it, the "fix" seems to be holding the tablet in one hand touching back and sides...
I must try earthing myself when it happens again....

It happened to me too. I was unable to unlock my N7 because the touch screen would lose 'contact' with my fingers while I was unlocking it. There's another thread about this too somewhere around here. Oddly enough though, the problem either stopped showing or was solved after reflashing my ROM and flashing another kernel.
Sent from my GT-N7105 using xda app-developers app

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[Q] Help needed for fixing quirky/malfunctioning software!

Hi folks, I've lurked here for quite a while and gotten some invaluable info; so first off thanks for all of the contributions from the gurus here!
Now, I have a pretty strange issue that I haven't been able to find an answer on anywhere. I'm hoping that someone can help me sort this.
The background story:
My wife has a MyTouch 3G Slide that I bought for her back in July. Last week she managed to drop it in some water. It DID NOT get fully submerged since the water was very shallow. However, it did get a slight amount of intrusion. She pulled the battery in a relatively quick amount of time and we let it sit in a bowl of rice to dry out for a couple days.
The current deal:
When I felt the phone was sufficiently dried after a few days, I fired it up. It took a very long time to get out of the MyTouch splash screen and loaded noticeably slower than normal. Once in, the phone functioned perfectly normal. Absolutely no issues at all with any functionality once you get past the security pattern.
However, whenever you put the phone to sleep, it does some funky stuff. The screen goes black for a second and then comes back on, ready for you to swipe down and then enter the security pattern again. Then it will go black again. Then it comes back on. It just continues to do this, never stopping. Sometimes it will go to the security pattern screen too.
So I figured this may have been some hardware issue since it was acting like someone was just repeatedly pressing the power button. First I wanted to try a simple reboot though. Upon rebooting, the phone would not get past the splash screen. It just froze there.
I pulled the phone apart to see if maybe there was some corrosion on the PCB from the water intrusion. Everything looked fine, but while I was in I did a little wipe-down with some alcohol, then I put it back together. After multiple attempts, I was able to get it to boot again. But the boot process was still VERY slow. Occasionally, it would boot into safe mode as well. But when it booted normally, everything would always function great once logged into the phone. This convinced me that it wasn't a hardware problem since the phone would not cut into sleep mode or anything when logged in. It worked perfectly fine. So I figured that maybe there was some sort of corruption that occurred in the software.
So I tried a hard reset. Didn't fix it.
Then I figured that maybe I needed to do a reflash. So I rooted the phone since the water plunge voided the warranty anyways. Once rooted, I flashed TeamFenix 1.7.1 successfully.
But the phone still only fully boots intermittently, and the boot process is still slow. It also has the same problem in sleep mode which is killing the battery fast since the screen is pretty much constantly on. But once in, the flashed ROM works perfectly just like the stock ROM.
Video of the condition:
Since I'm new, I'm not allowed to put any links in my post. But if you type in the string below after the YouTube url, you'll see a quick video I posted of the condition.
watch?v=dX55URtaRHo
So it seems that there is some crazy issue only upon bootup and when the phone is put to sleep. Can anything be done to fix this? Is there a way to locate and fix corrupted software? Any and all help is appreciated!
Sorry for the self bump. Any devs out there have any suggestions? I gotta get this thing sorted.
If its happening on both stock and teamfenix, I'm pretty sure it's a hardware issue. Flashing a rom completely replaces the software, so it doesn't sound like its that.
Sent from my T-Mobile myTouch 3G Slide using XDA App
It actually seems like a problem in the power button. Did you check the contacts for the power button? Repeatedly pressing the power button will first lock it initially and dim the screen. Press again, then it gives you the chance to unlock. Press again and it goes back to sleep. Wash rinse repeat...
Yes, I understand. But if it were an issue with the power button, when you logged into the phone, it would randomly put itself to sleep. It doesn't do that, it functions perfectly normal with no errors whatsoever when you are logged into the phone. This problem is only exhibited in sleep mode which would rule out a hardware issue with the power button.

[Q] Unresponsive screen replacement phone

I recently had to replace my Evo and when I go to replace my phone I see they take it out of a replacement box. I always hated liked the idea of a refurbished phone but I was desperate and hey if it works then what the hell. Its been 2 weeks and I've noticed problems with the screen response and sometimes losing control of it. for example i could be on Facebook and it will just start scrolling up and down rapidly I also have trouble moving from screen to screen having to make a slow full swipe or it wont work this also occurs unlocking the screen.A more common issue is when typing in portrait "i" and "n" don't work and I'm forced to switch to landscape. Although this happens frequently there is no way i can prove this to a Sprint store considering this happens randomly. Could i still ask for a replacement and what are chances i can get a NEW phone? Also is this a problem with the screen or one that can be solved?
Thank you in advance
I noticed times like that, also when I swyped it showed a very jagged line and wouldn't put the correct word down, I found that during those times I had it plugged into the charger, unplugged and it works fine, how to fix? I dunno, is yours caused by the charger too?
I've noticed my lockscreen issue is caused when charging and as for the keyboard no it happens randomly
I'd take it in, and try do perform actions and have it messed up. You can still express your disdain for the replacement.

screen not responding to touch inputs? (not sleep of death)

anyone had problem with the screen not responding after waking up?
There's no way to turn off the phone / make it respond unless to unplug the battery and plug it in again. Had this problem on the first GN and my second replacement GN.
Yep, happened to me the other day as well. There was a crash right before which made the phone reboot. Once it came back, the hardware buttons responded fine but the touchscreen was dead until a battery pull.
Hasn't happened since though.
Had this at lunch today also had it a few days ago.
When returning from sleep the touch input seems to be completely unresponsive.
I left mine for a while to see if it recovered, it did, it came up with the crash report for "System Process" The screen was then responding fine.
Weird. This is indeed different to the sleep of death, because the screen comes on.
Although maybe it's related in some way?
This just happened to me, and so I googled to find an answer. It thankfully led me here. It's like you guys described: I just tried unlocking my phone, but the screen was completely unresponsive. Not a single touch would register, even when trying to touch the Power Off option.
I read robaldred's comment, so I decided to try the waiting game. Thankfully, after a few minutes the screen just came on and the device was ready to use. I don't believe I saw a crash report though.
I hope this won't become a serious issue. I'd hate to be stranded at a point when I need to use my phone.
I had this problem too. have you guys used custom notification sounds?
Sent from my Galaxy Nexus using XDA App
I had this exact problem and I found it was due to Juice Defender (I have the Ultimate version as well). It kept happening after I installed and but since removing it over a week ago no problems.
Just had it happen here, had to pull batt. Using BatteryXL but will keep it on and see if it happens again.

[Q] Anyone experiencing lock ups?

Had my SGN for a few days now and over the last two I have come to find the phone won't respond after pushing the wake button. Some times the the notification light will be flashing, but the screen just won't turn on.
So far I've pulled the battery 4 times since yesterday... I can't find any reports of this, so I'm hoping I just got a defective unit.
I believe you have a rogue app. When I installed wave launcher it would lock the phone up in this fashion. The only way I could get the screen to turn on was to call the phone and while still on the call I had to uninstall the app and all was fine.. try and remember if you recently updated or installed an app and see if that fixes it
Sent from my Galaxy Nexus using xda premium
I got mine Friday, and when coming out of sleep the screen would turn on, but would be unresponsive to touch. If I pulled the battery, it was fine. I setup face detect to see if the phone was still active, and that would unlock it fine, I just couldn't touch the screen. I exchanged the phone yesterday with a new Nexus, and haven't had a problem since.
I believe the bad app was twicca. I installed right around the time the crashes started, and since removing it I haven't had any more crashes.
Saw another thread regarding pretty much the same issue, was SetCPU.
Previously used to see this (other devices) when something was underclocking CPU when phone was asleep, and phone wouldn't wake up)...
Anyway, glad to hear it sounds like you've got it.

[Q] Galaxy Nexus wakes up itself from sleep mode

Hi everyone,
I have been having a very annoying problem with my Galaxy Nexus during the past few days. When it enters to sleep mode (after 15 seconds without activity or when I push the power button) it wakes up itself again after 2 to 10 seconds and does not stay into sleep mode: the lock screen is displayed during 15 seconds before a new sleep mode/'wake up state' loop starts again.
It doesn't happen all the time but it does often enough to waste around 8% of battery every hour without me touching my phone.
I searched the forum for solutions and found in other threads that an application could be the source of the problem. I uninstalled every apps but the problem remained. I did a factory reset without installing any app or update after but the problem also remained. I also tried using only Wi-Fi or only 3G for data or switching to flight mode, but it didn't change anything.
Other solutions suggested on other threads, to disable GPS. It did it too, without more success.
I noticed that the problem only occurs when the phone is unplugged. It never happens during loading.
Have you any ideas that could help me to solve the problem?
Thanks a lot in advance,
Julien
Don't know if it helps but I made some screenshoot of BetterBattery Stats results.
Galaxy Nexus - The 'Waking Up' Problem
I love my Galaxy Nexus (I would like to thank Google for giving them away during the I/O 2012). Jelly Bean (the last version of Android) is simply a blast: it is smoother, snappier, sexier, you name it.
As much as I love JB, I still need to play with my devices, and what a better way to play with an Android phone than to root it. After testing a few ROMs, I ended up using Codename Android in combination with Lean Kernel. I advise you guys to have a look at it, it packages an insane number of customization and parameters that will make your phone even better!
The drawback when you hack around with your phone, is that your start feeling guilty when it starts doing random stuff, such as waking up randomly : I would put it in sleep mode (using the power button), and a few seconds (minutes if I happened to be lucky), the phone would wake up on its own, sometimes indicating it was charging when obviously no cable was plugged…
From there started the usual bug chase that many of us know: backup, factory reset, and a complete reinstallation. Unfortunately, in that particular case it would not change a thing and the problem was occuring even more often. It was becoming obvious that my problem came from the hardware…
The usb connector at the bottom of the Galaxy Nexus has a bad habit of bending downward after some time (it varies, depending of your usage). The solution is thus to take a small knife and pushing it upward so it does not touch the bottom metallic plate. Et voila! Your phone will stop waking up by itself, and your frustration will go away with it.
I guess if a lesson can be learned from that experience, it is that the obvious answer is not often the right one; you should also keep a small knife not too far from your Galaxy Nexus.
It´s work fine to me...

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