Develop Bugs

[Q] Back/Return capacitive button not responding.

Hey guys, just wanna ask what should i do with this issue. I've had my phone for about 3.5 months now and I just started having this issue this morning. I haven't dropped my phone in any kind of way (no water damage or anything). When i woke up this morning i was trying to to tap it, but it just wont work. I rebooted my phone to TWRP and the back button is working just fine. I thought there was just something wrong with the rom i was using (wicked v5.1, its awesome btw) so i wiped my phone and re flashed it, but it didn't fixed it, I tried flashing a different rom but the results were still the same. Then i thought that its probably because of my screen protector (iloome Tampered screen protector) but then again,I've had the screen protector on for a very long time already, and i never had an issue pressing the menu and back button.

For clarification, which is not working?
You mentioned you tapped the screen and nothing happened.
Is the screen not responsive to touch?
You mentioned that the back button works in recovery.
You also mentioned you never had issues with back and menu buttons.
What is not working, and is the issue intermittent?

hello, thanks for the rep.
Biker1 said:
For clarification, which is not working?
You mentioned you tapped the screen and nothing happened.
Is the screen not responsive to touch?
You mentioned that the back button works in recovery.
You also mentioned you never had issues with back and menu buttons.
What is not working, and is the issue intermittent?
Click to expand...
Click to collapse
Im talking about the capacitive back button, and when i mentioned that it works in TWRP, im specifically talking about the capacitive button, not the on screen buttons like on nexus devices. And it also seems to work sometimes if i pressed on it hard enough while its connected to my charger.

Beelzebub24 said:
Im talking about the capacitive back button, and when i mentioned that it works in TWRP, im specifically talking about the capacitive button, not the on screen buttons like on nexus devices. And it also seems to work sometimes if i pressed on it hard enough while its connected to my charger.
Click to expand...
Click to collapse
Hmm....
So the back capacitive button is working intermittently.
Sounds like a possible hardware issue.
I know you don't want to, but to rule out the protector, one would have to remove it, but that canbe sa last resort.
If all else fails to resolve issues, and you have insurance, you'd have torremove it anyway. Even if under Samsung warranty and no insurance.
- you can try the setting that's used for gloved hands which increases screen touch sensitivity. I forget it's exact location, but easy to find out.
- you can check if this is a known issue, etc.
- try wiping cache and dalvik cache in Recovery again

No lock screen and home buttone?! WTF?

Not really sure what happened, but randomly my lock screen stopped appearing. When I hit the power button it goes right to the home screen.
Also, the home button will not bring me back to the home screen when I'm in the app drawer or operating within an app, but yet the home screen will wake the device up to no lock screen so I have to use the back key to get back to the home screen.
Really weird.
I'm running wicked v.10 and tried reinstalling the ROM to no success.
Help!!
Thanks,

re: power/home buttons
seanvree said:
Not really sure what happened, but randomly my lock screen stopped appearing. When I hit the power button it goes right to the home screen.
Also, the home button will not bring me back to the home screen when I'm in the app drawer or operating within an app, but yet the home screen will wake the device up to no lock screen so I have to use the back key to get back to the home screen.
Really weird.
I'm running wicked v.10 and tried reinstalling the ROM to no success.
Help!!
Thanks,
Click to expand...
Click to collapse
If you are using Wanam Exposed then that is the reason.
Some of the options and settings in it can cause the issues you are experiencing.
If you have Wanam installed then open Xposed Framework and
click on "Framework" then select "uninstall" and reboot the phone.
It's a lot easier and faster that way than trying to search/find the exact
setting/option which was enabled that caused the issue in the first place.
Reinstalling it is fast and easy and does not require guesswork.
You can always re-install it really fast.
If you have not used Wanam then it must be some other mod which
was installed that's causing the issue.
Good luck!

Shoot. Didn't work. I Uninstalled it and the problem was still present.
I looked at my most recent updates apps and there wasn't anything significant.
Any other ideas?
Sent from my SGH-M919 using xda app-developers app

Found out that it was the Google Home Launcher I installed. I uninstalled it using Titanium and POW, everything came back.
Not sure why that happened. but whatever.
WHEW!

[Q] Note 8.0 N5110 menu, home, and back buttons non-functional

I have a Note 8.0 N5110 that has a strange problem which I don't really how to troubleshoot. When I am using it, the screen will go off just as if I short pressed the power button. I'll press the power button and swipe the screen to unlock. Everything is just as it was when the screen went off, but now the menu, power, and back buttons are non-functional. There are no lights or haptic feedback when I press them. My device was previously rooted before the 4.4.2 update and I had to use odin to install the upgrade. The issue didn't start for a couple of weeks after the update. Once the screen blanks and the buttons become non-functional, minutes later they will start working again; however, at some point, the screen will blank again and the cycle repeats. I have restored to factory settings with no luck resolving the issue. In fact, the screen will blank while I'm still in the setup phase. I really don't know what to try next to resolve this problem and my device is pretty much unusable at this point. Any thoughts or suggestions as to what I could try to fix this? Thanks in advance for any help - Jeff Gaiche

jgaiche said:
I have a Note 8.0 N5110 that has a strange problem which I don't really how to troubleshoot. When I am using it, the screen will go off just as if I short pressed the power button. I'll press the power button and swipe the screen to unlock. Everything is just as it was when the screen went off, but now the menu, power, and back buttons are non-functional. There are no lights or haptic feedback when I press them. My device was previously rooted before the 4.4.2 update and I had to use odin to install the upgrade. The issue didn't start for a couple of weeks after the update. Once the screen blanks and the buttons become non-functional, minutes later they will start working again; however, at some point, the screen will blank again and the cycle repeats. I have restored to factory settings with no luck resolving the issue. In fact, the screen will blank while I'm still in the setup phase. I really don't know what to try next to resolve this problem and my device is pretty much unusable at this point. Any thoughts or suggestions as to what I could try to fix this? Thanks in advance for any help - Jeff Gaiche
Click to expand...
Click to collapse
Couple questions.....do you have a case or screen protector on it? Sometimes these can interfere with the sensor and cause these type of issues.

I do have a case on the device. It's been cased pretty much since I purchased it. I guess it can't do any harm to remove it from the case, just to see if it's possibly interfering with a sensor somewhere. The issue does seem to have been sporadic at first. I'll give that a try. Thanks for the suggestion -- Jeff

jgaiche said:
I do have a case on the device. It's been cased pretty much since I purchased it. I guess it can't do any harm to remove it from the case, just to see if it's possibly interfering with a sensor somewhere. The issue does seem to have been sporadic at first. I'll give that a try. Thanks for the suggestion -- Jeff
Click to expand...
Click to collapse
Was just a thought. Otherwise it might be a defective sensor that has to be replaced. Not really sure.

I had the same issue. In my case the buttons still worked if I used the spen. I went back and wiped both the cache and Dalvik Cache*and it resolved the issue.
Sent from my GT-N5110 using XDA Free mobile app

[V500] Screen unlock/wake up issueI ??

Hello
I was on vacation and had v500 (installed with Slebits Validus LP ROM) with me.
Something went wrong and I could not unlock screen or wake the G pad with power button, just didn't happened. The home screen showed for a second, than it went black and couldn't wake it up with power button or double tap the screen, nothing. But I could enter TWRP with button combination (so power button works). I flashed different kernel, but nothing changed.
So when I came back home I flashed another CM12 ROM, but the same thing.
When ROM boots, home screen shows for the second, then goes black and cant be unlocked no mater what.
Is this some kind black screen bug? Wrong bootloader?
Need help, please... thx for reading

Are you using a tablet protector with a magnet lock in the cover? Try taking it off to see if the cover is causing interference.

sleekmason said:
Are you using a tablet protector with a magnet lock in the cover? Try taking it off to see if the cover is causing interference.
Click to expand...
Click to collapse
Thx for answer, but no, I have no cover.
Couldn't find anything similar on internet, so I reverted gpad back to stock.
Surprise, there I also cant unlock the screen. But when I did button combination to initiate factory reset, on/off button works every time.
Ill sent it on service, its still under warranty. We will see...

Touchscreen Occasionally not responding

Greeting,
I have a weird issue where occasionally after I unlock my phone, my screen doesn't respond to touches.
The phone works and responds to physical button presses but not touch.
Not sure exactly when it started happening but I've noticed this since last week.
Any idea what might be causing this?
I'm running Android Pie 52.0.A.3.202.

Sydrox said:
Greeting,
I have a weird issue where occasionally after I unlock my phone, my screen doesn't respond to touches.
The phone works and responds to physical button presses but not touch.
Not sure exactly when it started happening but I've noticed this since last week.
Any idea what might be causing this?
I'm running Android Pie 52.0.A.3.202.
Click to expand...
Click to collapse
Please upgrade to the newest firmware.

Sydrox said:
Greeting,
I have a weird issue where occasionally after I unlock my phone, my screen doesn't respond to touches.
The phone works and responds to physical button presses but not touch.
Not sure exactly when it started happening but I've noticed this since last week.
Any idea what might be causing this?
I'm running Android Pie 52.0.A.3.202.
Click to expand...
Click to collapse
Got the same issue on 52.0.A.8.50. Usually opening the app drawer then hitting back solves it - otherwise none of the virtual buttons work.

Searching the web it seems touch screen issues are pretty common on this phone. I'm a bit surprised there isn't more being said here about it. Some experience delayed response, dead areas and no response at all. I have all those issues. Yes I am on the latest firmware. I bought the phone used with a cracked screen. I checked it out and everything seemed fine. I didn't use the phone, just set it aside til replacement screen came. I should have used the phone to thoroughly check it out but didn't want to go through the set up process as I was thinking of B/L unlock and root. New screen came, put it on and seemed to be working fine then screen would be unresponsive. I did factory reset, software update, software repair, went into settings and made sure sure everything was good there, nothing helped. The center of the screen (it's low and a bit off center) is pretty much dead. To open launcher I have to touch and hold near the top of the display. Touch and hold apps is tricky. Usually the app just opens. When I do get it to hold, I can't drag it anywhere. Also, icons in the drop down menu cannot be rearranged or edited. I can swipe up/down, side to no problem. Whenever touch goes dead completely, the home, back and minimize buttons go grey. Tapping the power button gets them back functioning again. . Function test fail. Free draw lets me make a few seconds of scribbles then freezes. The x and rectangle block draw does the same. Tapping power button does nothing to unfreeze either. The color test pass even the block one where you toggle on/off sections of the screen in blocks. It's really weird. First impression would lead me to the screen but it really acts like a software issue. From what I've read so far this phone uses two different display drivers. I not seen anything on how to change that and it would more than likely mean B/L unlock and root, which I'm not against doing. I would just like to know definitively if it's hardware or software. Any input would be greatly appreciated.
Thanks

bobsright said:
Searching the web it seems touch screen issues are pretty common on this phone. I'm a bit surprised there isn't more being said here about it. Some experience delayed response, dead areas and no response at all. I have all those issues. Yes I am on the latest firmware. I bought the phone used with a cracked screen. I checked it out and everything seemed fine. I didn't use the phone, just set it aside til replacement screen came. I should have used the phone to thoroughly check it out but didn't want to go through the set up process as I was thinking of B/L unlock and root. New screen came, put it on and seemed to be working fine then screen would be unresponsive. I did factory reset, software update, software repair, went into settings and made sure sure everything was good there, nothing helped. The center of the screen (it's low and a bit off center) is pretty much dead. To open launcher I have to touch and hold near the top of the display. Touch and hold apps is tricky. Usually the app just opens. When I do get it to hold, I can't drag it anywhere. Also, icons in the drop down menu cannot be rearranged or edited. I can swipe up/down, side to no problem. Whenever touch goes dead completely, the home, back and minimize buttons go grey. Tapping the power button gets them back functioning again. . Function test fail. Free draw lets me make a few seconds of scribbles then freezes. The x and rectangle block draw does the same. Tapping power button does nothing to unfreeze either. The color test pass even the block one where you toggle on/off sections of the screen in blocks. It's really weird. First impression would lead me to the screen but it really acts like a software issue. From what I've read so far this phone uses two different display drivers. I not seen anything on how to change that and it would more than likely mean B/L unlock and root, which I'm not against doing. I would just like to know definitively if it's hardware or software. Any input would be greatly appreciated.
Thanks
Click to expand...
Click to collapse
Maybe the Screen Connector wasn't 100% clean.
Or not only the screen is damaged.
I heard that the touch problems are mostly fixed with PIE. The closed source clearpad touch driver is..... Hoping Q gives us an further updated driver.
You still get sometimes ghost touches on higher workload or if the keyboard app is slow, but if you have dead spots the hardware sounds damaged.