Lg g2 sprint variant "Knock on" feature broke - G2 Q&A, Help & Troubleshooting

Well. It worked up until about 20 mins ago. Then randomly just stopped working. Ive rebooted, shut down, enabled and disabled the feature in settings. Fixed permissions for the heck of it. Cleaned the screen. Reset calibration, etc. Nothing seems to work. I can double tap to shut the screen off easily, and it works flawlessly, but trying double tap to wake is completely useless. Any suggestions?
Sent from my LG-LS980 using xda app-developers app

Burkettacb said:
Well. It worked up until about 20 mins ago. Then randomly just stopped working. Ive rebooted, shut down, enabled and disabled the feature in settings. Fixed permissions for the heck of it. Cleaned the screen. Reset calibration, etc. Nothing seems to work. I can double tap to shut the screen off easily, and it works flawlessly, but trying double tap to wake is completely useless. Any suggestions?
Sent from my LG-LS980 using xda app-developers app
Click to expand...
Click to collapse
Wow this is happening to me as well. I'm running the optimus rom currently. I'm reverting to stock here shortly in hopes for the KK update soon so I'll see if that fixes it.

nope. up to date stock zva now and knock on doesnt work but knock off does work as you stated. well this is wierd.

Well thats ****ing depressing
Sent from my LG-LS980 using xda app-developers app

Tons of lg users are experiencing this issue. Its a design flaw with a hardware component that easily breaks. Wonderful build quality -_-...right. So only option is replacing the phone. But to how soon, until the other one breaks. So its kinda like. Well. This blows. I suppose Ill install a custom kernel and enable screen wake features that way.
Sent from my LG-LS980 using xda app-developers app

Okay. So after hours of tapping. Which might i add. My fingers hurt, I am now able to activate the screen. Pausing after each tap, using my finger print area to tap "not to be confused with finger tip". The screen will activate. Also note, the standard two taps works sometimes, but with four presses, i seem to get the best results. Give it a try people. I have a theory the hardware has not failed. But yet, the activation area pixel size value changed. Either due to a conflicting app install. A intermittent system glitch etc
Sent from my LG-LS980 using xda app-developers app

I'm having the same issue with my G2. Knock-on/off was working fine. Had the phone in the sun for a little while (maybe 2 hours) and the knock-on has stopped working completely. Used a drawing app on my screen and found no dead pixels or strips. Knock off still works perfectly though.

This could also be an issue with your proximity sensor. If something (screen protector, finger, dust, etc.) is blocking your proximity sensor, it could be reporting to the phone that it is in a pocket, and to keep the screen off. Try to clean that area, and avoid obstructing the sensors "view". As for the leaving it in the sun, you could have damaged the sensor? You could test it by making a call real quick and see if the screen turns on when you pull the phone away from your face.
Sent from my LG-LS980 using XDA Premium 4 mobile app

The sensor seems to be working fine. Just tested it.

DrZeuss said:
I'm having the same issue with my G2. Knock-on/off was working fine. Had the phone in the sun for a little while (maybe 2 hours) and the knock-on has stopped working completely. Used a drawing app on my screen and found no dead pixels or strips. Knock off still works perfectly though.
Click to expand...
Click to collapse
Ya i got the same problem....at home it works perfect but when i went outside in the sun i can double tap like hell and screen didnt turn on(it turns on but cant see anything because its too dark like screen brightness is lower than low)...also power button didnt work...the proxi sensor is ok...i run the test menu and it shows that everything is ok...i also sent it back to my carrier and after a week of testing got it back. They found nothing and said that my described problem is a "feature".... sometimes it turns on after tapping und pushing the power button like hell and sometimes it doesent..
Your screen turns also on with very very low brightness or it is off? When u look really really close u can see it...for example hold power button and u can hardly see the white power off/reboot popup...but i dont know where the problem can be...germany d802 version..(Sorry for my BAD english)

4NDR345 said:
Ya i got the same problem....at home it works perfect but when i went outside in the sun i can double tap like hell and screen didnt turn on(it turns on but cant see anything because its too dark like screen brightness is lower than low)...also power button didnt work...the proxi sensor is ok...i run the test menu and it shows that everything is ok...i also sent it back to my carrier and after a week of testing got it back. They found nothing and said that my described problem is a "feature".... sometimes it turns on after tapping und pushing the power button like hell and sometimes it doesent..
Your screen turns also on with very very low brightness or it is off? When u look really really close u can see it...for example hold power button and u can hardly see the white power off/reboot popup...but i dont know where the problem can be...germany d802 version..(Sorry for my BAD english)
Click to expand...
Click to collapse
My screen turns completely on and off when I use the button/knock-off feature. I'm going to take it to a technician today and see what they have to say about it.

First, What are you running on your device? Stock? Rooted...
Burkettacb said:
Tons of lg users are experiencing this issue. Its a design flaw with a hardware component that easily breaks. Wonderful build quality -_-...right. So only option is replacing the phone. But to how soon, until the other one breaks. So its kinda like. Well. This blows. I suppose Ill install a custom kernel and enable screen wake features that way.
Sent from my LG-LS980 using xda app-developers app
Click to expand...
Click to collapse
That's odd, I have not seen much on this... if running stock
Burkettacb said:
Okay. So after hours of tapping. Which might i add. My fingers hurt, I am now able to activate the screen. Pausing after each tap, using my finger print area to tap "not to be confused with finger tip". The screen will activate. Also note, the standard two taps works sometimes, but with four presses, i seem to get the best results. Give it a try people. I have a theory the hardware has not failed. But yet, the activation area pixel size value changed. Either due to a conflicting app install. A intermittent system glitch etc
Sent from my LG-LS980 using xda app-developers app
Click to expand...
Click to collapse
Or againg, a ROM you may be using.
More detail would be helpful:good:

For me it happend on stock and rooted with aospa... Dont know What can cause this. I Sent it to my Carrier they found nothing....
Gesendet von meinem LG-D802 mit Tapatalk

running stock myself. Technician was useless and told me nothing.

DrZeuss said:
running stock myself. Technician was useless and told me nothing.
Click to expand...
Click to collapse
Same here
Gesendet von meinem LG-D802 mit Tapatalk

Did you try the Stop Having Sprint fix?
Sent from my LG-D800 using XDA Premium 4 mobile app

I got the d802...
Gesendet von meinem LG-D802 mit Tapatalk

Burkettacb said:
Okay. So after hours of tapping. Which might i add. My fingers hurt, I am now able to activate the screen. Pausing after each tap, using my finger print area to tap "not to be confused with finger tip". The screen will activate. Also note, the standard two taps works sometimes, but with four presses, i seem to get the best results. Give it a try people. I have a theory the hardware has not failed. But yet, the changed. Either due to a conflicting app install. A intermittent system glitch etc
Sent from my LG-LS980 using xda app-developers app
Click to expand...
Click to collapse
I had given up on knock on but tis actually works. (not 100%) but it actually turns it on. WOW
Is there a way to adjust the "activation area pixel size value"?

ingoljosh said:
I had given up on knock on but tis actually works. (not 100%) but it actually turns it on. WOW
Is there a way to adjust the "activation area pixel size value"?
Click to expand...
Click to collapse
This^. For me I have to use my entire thumb or even palm, but it occasionally works.(still like 1/30 tries). This leads me to believe that it is software related. This one issue is killing me. I hate using the power button on the back so I only used knock on. Now that it's not working I'm hating this phone. Knock off works great and I know knock on is kernel based so maybe someone can create a kernel that fixes this issue.

This did work for me. Fixed the knock on feature on my D802.
Credit: Smith I Run (Thread from android central. Can't post link to thread)
There is a solution; (not sure about it, my friend had the same problem and he fixed it with this method)
Open dialer menu and type;
5689#*980# (Sprint)
3845#*801# (T-Mobile)
3845#*803# (AT&T Canada)
3845#*802# (International)
3845#*800# (At&T)
3845#*980# (Verizon)
And when hidden menu is showed up, go to "Settings"
and go to "Update Touch Firmware".
The touchscreen won't work until after 5 seconds, Wait for it and if touchscreen gets working, exit the menu.
Lock the phone and try knocking on the screen, It should be working :laugh:
Click to expand...
Click to collapse

Related

DK28, The Good And Bad

Even though its certain this isn't the official release, I thought we should condense the topics and just post the your thoughts about the good and bad features this update provides.
Ill start..dk28 isn't that awful for me like others. The only problems I've noted was samsung widgets disappearing sometimes, home screen rotation lag, and a few checkers showing up in the browser when zooming in and out.
However, on the bright side, flash is very smooth, and there are better icons
Sent from my SPH-D700 using XDA App
GPS fubared?
No notification when charging usb
Hey guys i recently started having a problem with the back button.it will pick up half the time and then its unresponsive the time any ideas on what i can do?
Probably just lag. Which way did you flash dk28?
Btw, I came up with some other things.
1. Notfications are delayed (ex. Handcents icons in the top bar are sometimes delayed)
2. Keyboard delayed (its actually a bit worse than before)
Sent from my SPH-D700 using XDA App
*Keyboard/touchscreen/captivate button lag/failure to register action/press
*Streaming music skips (last.fm) while doing anything else; like browsing the web.
*Slow orientation change
*No lineout on multimedia dock yet
*None of the unicorns and rainbows flying out of the screen that were promised by the legion of unrelenting froyo fanboys littering this forum for the past month.
Sent from my SPH-D700 using Tapatalk
acer1096xxx said:
Even though its certain this isn't the official release, I thought we should condense the topics and just post the your thoughts about the good and bad features this update provides.
Ill start..dk28 isn't that awful for me like others. The only problems I've noted was samsung widgets disappearing sometimes, home screen rotation lag, and a few checkers showing up in the browser when zooming in and out.
However, on the bright side, flash is very smooth, and there are better icons
Sent from my SPH-D700 using XDA App
Click to expand...
Click to collapse
Same here, I guess a few of us got lucky. Just very small things such as checker boarding. I don't have homescreen lagg though, or widgets that disappear.
Sent from my SPH-D700 using XDA App
hardrock121 said:
GPS fubared?
Click to expand...
Click to collapse
GPS actually finally works for me with the update, I'm getting signal indoors in places I hadn't previously and it has yet to time out and require me to reflush the agps data or reboot the phone (used it all day today for work).
dannyzen said:
No notification when charging usb
Click to expand...
Click to collapse
Not seeing this one either, lets me know right away though the notification bar as per usual.
However I am experiencing one very odd piece of behavior, If I open the phone to show the keyboard, turn off the screen and leave it sitting ... the keyboard LED blinks constantly. I'm not sure if it's an app of mine conflicting or froyo itself but it's fairly annoying.
punzada said:
However I am experiencing one very odd piece of behavior, If I open the phone to show the keyboard, turn off the screen and leave it sitting ... the keyboard LED blinks constantly. I'm not sure if it's an app of mine conflicting or froyo itself but it's fairly annoying.
Click to expand...
Click to collapse
That's odd...maybe your phone is actually damaged then
Sent from my SPH-D700 using XDA App
I personally went back to 2.1, rock solid and stable.
On 2.2, Screen rotation is slow as molasses, GPS is stuck on my work location and would not work at all in updating. Browser was a bit slower compared to 2.1. Hated the scattered, non-alphabetical applications folder, wtf?!!
I enjoyed the 2.2 leak but the little niggles weren't enough to stay on it.
I did like the coloured menus, and the ability to turn off 3G when holding the power button for a few secs.
I keep getting errors when connecting to Wifi. I will look down at the phone and wifi will be off even though i never turned it off, and then the notification toggle wont do anything, and when I go into settings to enable it, it says "error" underneath the Wifi entry. Then it takes a few tries to get it connected again.
I do like where Froyo is headed, but this is absolutely no where near polished enough for final release.
Edit: Having a fully working GPS is awesome though. 2 meter accuracy = Awesome.
Does anyone else have lag when trying to adjust brightness on the notification bar?
LordLugard said:
Hated the scattered, non-alphabetical applications folder, wtf?!!
Click to expand...
Click to collapse
If you press menu > edit > menu again, there's an option for A-Z order.
Guess it doesn't matter now since you downgraded, but just thought id let you know.
Edit: lilxflip, yes. I'm getting the same problem but didn't notice that until now
Sent from my SPH-D700 using XDA App
I've noticed since 2.2 that when a caller hangs up, I get a single beep in my bluetooth earpiece confirming that the call has ended, which I like...didn't have any sound before that.
Anyone else having trouble hanging up during a phone call? I hit the damn End button at least 3-4 times before it decides to hang up.
I must be one of the lucky few, everything works great, and not only that it fixed all the issues I had with the previous 2.1 build. I've tried out just about everything I can think of wifi, gps, 4g, pandora, etc.
edit: Should add, I did a factory reset after I installed it, wiped everything the only bit I loaded back in was contacts.
muyoso said:
Anyone else having trouble hanging up during a phone call? I hit the damn End button at least 3-4 times before it decides to hang up.
Click to expand...
Click to collapse
Give the phone a few secs after the screen comes back on then press it. Works fine; if you immediately press it.. it doesn't hangup. Seems intentional..
Umm.. aside from no GPS now which I plan to fix by reflashing di18 then 2.2... I don't find any major problems. The keyboard does have a bit of a registration flaw but not too major..
The leds do light up whenever the screen is off.
And I don't think the brightness sensor likes my room light because it enjoys changing itself a bit.
Sent from my SPH-D700 using XDA App
I'm always weary about doing wipes, so to test if this is true, mid anyone else testing out this also to see if he's right? =P
punzada said:
However I am experiencing one very odd piece of behavior, If I open the phone to show the keyboard, turn off the screen and leave it sitting ... the keyboard LED blinks constantly. I'm not sure if it's an app of mine conflicting or froyo itself but it's fairly annoying.
Click to expand...
Click to collapse
I have noticed the Sammy widget thing and the slow screen rotations but I was intrigued by your bug. So I tried it. Definitely happened. I wouldn't say 'blinks constantly' though. At least not in my case. It flashed on for about 2-3 seconds every 30 or so seconds. Maybe even as long as a minute. Caught me off guard. I watched it for a bit then went back to reading this thread only to have it happen out of the corner of my eye.
kenvan19 said:
I have noticed the Sammy widget thing and the slow screen rotations but I was intrigued by your bug. So I tried it. Definitely happened. I wouldn't say 'blinks constantly' though. At least not in my case. It flashed on for about 2-3 seconds every 30 or so seconds. Maybe even as long as a minute. Caught me off guard. I watched it for a bit then went back to reading this thread only to have it happen out of the corner of my eye.
Click to expand...
Click to collapse
Woah, just tried it. I had similar results. However, I opened the keyboard, let the flash disappear, then 2-3 seconds later it came back. And stayed there too, for about a minute or so!
Not really a big deal in my opinion; I honestly don't use the keyboard often due to its laginess..

Auto rotate problem

My auto rotate has stopped working. Only way to go to landscape is by opening the keyboard. I suspect one of the sensors may be at fault. Raging thunder was much easier to play when it was working now the turning is sort of sporadic. I tried reflashing to no avail. Anyone have any ideas? I have to take my epic to sprint because the left side of my screen is lifting so ill mention that while I'm at it. In the meantime is there anything I can do on my own?
Sent from my SPH-D700 using XDA App
Try the following: http://forum.xda-developers.com/showthread.php?t=926098, you also may want to try toggling the auto rotation box in the settings, and reboot your phone
Also, if your taking it into sprint, you may want to restore your phone back to the stock rom and recovery first, if it isn't already.
Also if you're using a custom launcher make sure the rotation settings on that don't conflict with the original settings. Sometimes you gotta turn the custom launcher's settings off.
tai376 said:
Also if you're using a custom launcher make sure the rotation settings on that don't conflict with the original settings. Sometimes you gotta turn the custom launcher's settings off.
Click to expand...
Click to collapse
Ive seen the opposite with launcher pro,you need to have both enabled for it to work...
Sent from my SPH-D700 using XDA App
removed .......
My screen is starting to lift on the left side as well. I've dropped my phone once or twice; but they weren't long/hard drops. Maybe this is why?
my left side screen was slightly raised from day 1 out of the box.
Yea it really sucks. Luckily sprint is awesome enough to fix or replace my phone at the service center near me as long as I'm paying for the insurance... and as long as they can prove that I didn't do the damage to it. I can't stand the screen lift more than I can stand the auto rotate. It scares me lol
Sent from my SPH-D700 using XDA App
Alright little update.
I got tired of stock di18 after going back to it experiencing lag on every 2.2 rom I tried. Just flashed the new midnight rom and NOW everything is.zippy as help with no lag. Just so happens my autorotate works now. Did the autorotate lag fix and now its perfect. Might I add gps works perfectly too.
...finally my epic is now finally epic. 1100/2000 in smartbench. That numbers rounded I don't remember the exact figure but point is I luv these devs!
Sent from my SPH-D700 using XDA App
Not sure if this was mentioned, but if you do the auto rotate lagfix: sensorcalibutil_yamaha method, and you get "failed" results, you can go to data/system and delete (or rename):
Ms3c_yamaha.cfg
(I renamed it to ms3c_yamaha.bak)
Then reboot, use the sensorcalibutil_yamaha method again, the cfg file will have been recreated, and it should work.
Sent from my SPH-D700 using Tapatalk
Yea it works extremely fast. The.phone is flipped and ready to go before I even adjust my hands to use the phone. I love this thing.
Sent from my SPH-D700 using XDA App

[Help] weird back button, event fires twice

Sometimes my backbutton fires twice. Its very annoying when browsing and going a page back and it actually jumps 2 pages back.
I checked the behaviour with the app "KeyEvent Display" and it clearly shows that sometimes 4 events are fired instead of 2 (keyup + keydown).
The app requests root, but you dont need it for only testing the keyevents. Can anyone confirm this? Thanks
Mine does exactly the same, from what I've worked out its related to the phone running slow but I have no idea how to fix it, if we find an answer if be very grateful its very annoying!
Sent from my R800i using XDA App
Mine has the same problem too it's really annoying when using root explorer and it backs right out of the app!
Sent using telepathy!
thatsupnow said:
Mine has the same problem too it's really annoying when using root explorer and it backs right out of the app!
Sent using telepathy!
Click to expand...
Click to collapse
same with me, only on some apps though like tapatalk and root exploerer
Same here. ButI figured a way-out. just press it and take you finger off quickly then it works normal.
same here and same solution, press it quickly.. been living with it for 3 months already.. it just makes me sick sometimes...
I have contacted se-support and pointed them to this thread. Waiting for reply
Sent from my R800i using XDA Premium App
Same problem here... Xperia Play bought in april.
Anyone have any idea if this is software or hardware related? Is it all types of xperia plays, out just certain types?
Sent from my R800i using XDA App
Tested a bit more. The menu button is also haunted here. Fires sometimes multiple events like a fukn uzi. I really hope its not hardware related and se will fix the softwarebug
Sent from my R800i using XDA Premium App
I feel left out haha ive never had this problem. I have however had an issue where the screen decides to freak out and decides to do things at random, it gets annoying when im typing and all of a sudden all the keys start being pressed on thier own.
locking and unlocking fixed is temporarily.
Does anyone have a custom rom flashed with this issue still happening? That would tell us pretty quick if it was hardware/software related.
I have had this problem too well since i upgraded to 2.3.3
I have a UK Sim free generic handset unmodded.
d31b0y said:
Does anyone have a custom rom flashed with this issue still happening? That would tell us pretty quick if it was hardware/software related.
Click to expand...
Click to collapse
All the custom roms except for CM7 are based on the SE stock rom anyway, so if anyone on CM7 dosent have this problem the info would be useful
I have same issues with this for the up and down arrow it always post two key strokes in Bruce lee. I can't do some special moves and finish moves because of this I am wondering if I should try and get a replacement Verizon stock ROM
Could the double back button issue be caused by the circle button?
Maybe as you press the back button the back of the screen also pushes the circle button?
I dont have this issue btw.
Tbh i have only noticed this problem if i have the phone in my right hand and i use my thumb to press the back button (reaching over the phone to the back key). If i use the phone in my left hand and use my thumb no problem lol.
If i use it normally (phone in 1 hand and using a finger from my other hand) to press the keys i do not have this problem..... Strange
Well, I think I worked out what's happening. Try holding the 'R' shoulder key and press the back button.
I imagine what is happening is android is picking up the shoulder button press but it doesn't do anything. Then pressing the back button fires the event twice. The same way you can fool windows into repeating the wrong key when you hold 2 buttons down (may be fixed in windows ).
Now the question is, how the hell fan you fix it?
I'll submit it to SE later on tonight and see what they say.
EDIT: definitely seems to be certain apps. It doesn't happen in settings but does happen in tapatalk.
Sent from my R800i using Tapatalk
Same problem here
Sent from my R800i using XDA App
I found that the R/L Button Changer app that is in the Theme/APP forum stopped the problem.
Sent from my R800x using XDA App

Back and Menu buttons sometimes don't work

Heelo.
I have noticed that sometimes (happened to me 3 times in 4 weeks now) while doing random things (most recentone was when i was looking at a picture on facebook and wanted to exit the picture), back and menu buttons under the screen don't respond. Home button works, touchscreen works, but menu and back key doesn't. In order to make it work I have to turn the screen on and back on so that they start working. I am using OMEGA 3.1 ROM and Faux 003 kernel.
Is anyone else experiencing the same problem?
Sent from my GT-I9505 using Tapatalk 2
Check if on stock rom it doesn't work either, or ask in the rom/kernel thread.
Sent with Samsung Galaxy S4 (GT I9505)
As I mentioned it happened 3 times in about 4 weeks now, so it's not a kind of thing that I could test with other roms, because it's very very rare. But I have also noticed that sometimes the same two buttons are less responsive than other times (like sometimes I can barelly press it with a tip of my index finger and it responds, but other times it does not respond when touched with point of finger, it only responds when I touch it with the pad of my finger - does it have something to do with electricity or softer skin on pads of fingers?).
Thank you
I've had this a few times in a bit over a week. Doesn't bother me as it's pretty rare and most likely a bug that will be fixed or possibly bugs in the apps themselves.
Good thing home button still works.
Sent from my GT-I9505 using xda premium
I also think it's a bug. Just had to ask as I didn't find anything with google
Thank you!!
I think he asked if you could test on a stock rom so you can see if its a hardware issue. Ive had mine for almost 4 weeks now and my back and menu button never failed to respond so far. Im on stock btw.
Same thing has happened to me a few times also.
I will be using an app or something, attempt to push the back button to get out of that app, and all of a sudden both the back button AND menu buttons die.... u press the area where they are located and nothing happens, no vibration, no light up, no nothing. The only way to fix it, is to restart the phone.
Only happens very rarely - and hard to guage when it might occur and repeat, due to its random nature.
Same thing happens to me. Also very rare, it's happened twice in 1 month
Sent from my GT-I9505 using XDA Premium HD app
tclocki said:
I think he asked if you could test on a stock rom so you can see if its a hardware issue. Ive had mine for almost 4 weeks now and my back and menu button never failed to respond so far. Im on stock btw.
Click to expand...
Click to collapse
Rooted now but very sure it happened when I was on stock as well.
Sent from my GT-I9505 using xda premium
I also have it happen from time to time. Don't have to reboot tho, it will start working by itself after a while.
Sent from my boomstick!
I was on stock Rom when it happened
Sent from my GT-I9505 using XDA Premium HD app
bump:
I have still this issue.
Having a i9505.
I am on Kitkat 4.4.2 C-Rom with Ktoonsez kernel.
Same thing with whatever kernel.
Not sure what it is really.
But it is annoying for sure.

[Q] Knock on just stopped working?

I've had my G2 for almost a month now and the knock on/off always worked flawlessly. Then today it just stopped working, my knock off works but knock ON will not work, at ALL! I've restarted, turned the feature off/on, nothing is getting it to work again. Any ideas? What exactly triggers the knock on feature? Surely it can be the touch of the lcd if the screen is off...is it somehow the proximity sensor or gyro sensor? If I can figure out how it works maybe I can start there..Thanks for any help you can give me.
GHII said:
I've had my G2 for almost a month now and the knock on/off always worked flawlessly. Then today it just stopped working, my knock off works but knock ON will not work, at ALL! I've restarted, turned the feature off/on, nothing is getting it to work again. Any ideas? What exactly triggers the knock on feature? Surely it can be the touch of the lcd if the screen is off...is it somehow the proximity sensor or gyro sensor? If I can figure out how it works maybe I can start there..Thanks for any help you can give me.
Click to expand...
Click to collapse
Backup first...then Factory reset
Should fix whatever file or resource that got screwed up. Install your apps 1by1 until you find what app caused your issue & delete it
tiguy99 said:
Backup first...then Factory reset
Should fix whatever file or resource that got screwed up. Install your apps 1by1 until you find what app caused your issue & delete it
Click to expand...
Click to collapse
Well I havent installed anything new recently but maybe I'll take the opportunity to try one of the new CM/ASOP roms...Thanks for the reply
I'm having the same issue with knock on not working. i've wiped a few times and have flashed diferent roms but it wont turn the phone back on. i'm also having this strange issue where i cant pull the notification bar down.
EDIT: I figured it out. did you install TWRP Recovery? i did and mine was messed up. i flashed back to stock and re-rooted and everything works again. I'm not sure if TWRP is the reason since im on a t-mobile G2 but reflashing to stock definitely worked. also i think you have to do a reset after flashing rom because the changes wont take effect unless you do
GHII said:
Well I havent installed anything new recently but maybe I'll take the opportunity to try one of the new CM/ASOP roms...Thanks for the reply
Click to expand...
Click to collapse
Wow that's a relief, I'm having the same pull down issue too.. Even scrolling here is a dead spot on the screen if I'm scrolling a page or list as I get in that area it "slows". I thought my digitizer was going bad. I found my knock on works but I have to do it extremely slow... Tap... Pause 1-2...tap.
Edit yes to twrp.
Sent from my VS980 4G using xda app-developers app
well i re-rooted and it doesnt work anymore. i deleted stuff so i need to see if its something that is being removed that causes it to not work
I just flashed the stock rom back..shows unrooted again, and it is still doing the same thing. Im still under my 30 days, Im going to return it, hope for the Nexus 5 on verizon by the weekend and if not I guess buy a new G2.
mine still says rooted so i'm kinda screwed right now
Same issue
Same thing with my T Mo G2. Using Nova launcher. Knock on worked flawlessly since new, about 2 months,use Nova gesture for knock off. Suddenly knock on stopped working. Too bad, because I like the feature, got used to using it. Did a restore and wipe using TWRP, kept root access, but still no knock on. Next I'll try going back to stock ROM, but I'd rather go an easier route. Has anyone successfully restored knock on?
Hi i have a dead spot somewhere app in the screen and when i pull down the notification bar it doesnt goind down.Also i tryed to draw with quick memo and i can see that it is a dead spot somewhere near the top of the screen
Does anyone has the probleme and have you fixed it
The only solution is returning the phone
ankurcshah said:
The only solution is returning the phone
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Click to collapse
No...first try this.
Open phone app and go to dialer
Dial 3845#*XXX# where XXX is your phone model i.e. 800/1/2/3.. You will come accross a menu.
Select settings
Select touchscreen firmware update...
Wait for couple of minutes...screen will become unresponsive...
when it responds reboot....
Go to settings gestures...ensure knock on is selected.
It should work then,
Let me know...Best of Luck....
---prs thx if helped
rastigo said:
No...first try this.
Open phone app and go to dialer
Dial 3845#*XXX# where XXX is your phone model i.e. 800/1/2/3.. You will come accross a menu.
Select settings
Select touchscreen firmware update...
Wait for couple of minutes...screen will become unresponsive...
when it responds reboot....
Go to settings gestures...ensure knock on is selected.
It should work then,
Let me know...Best of Luck....
---prs thx if helped
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Click to collapse
It is a ls 980 model so the code is 5689#*980# and i did that and after doing that also its the same. no reponse ! So tired of this
ankurcshah said:
The only solution is returning the phone
Click to expand...
Click to collapse
ankurcshah said:
It is a ls 980 model so the code is 5689#*980# and i did that and after doing that also its the same. no reponse ! So tired of this
Click to expand...
Click to collapse
I read the following posts on some other forum...so essentially its a hardware issue....try stock jb rom kdz, then factory reset and reboot. If this helps solve the problem you are lucky. If not, try getting your phone replaced with 802 model. That is practically most stable with a lot of devlopment and tons of ROMS stable and working.
I will still keep looking for a solution and let you know consulting a few senior xda devs I know... sorry man, it hurts to see a fellow indian in distress.....:crying:
Tons of lg users are experiencing this issue. Its a design flaw with a hardware component that easily breaks. Wonderful build quality -_-...right. So only option is replacing the phone. But to how soon, until the other one breaks. So its kinda like. Well. This blows. I suppose Ill install a custom kernel and enable screen wake features that way.
Sent from my LG-LS980 using xda app-developers app
That's odd, I have not seen much on this... if running stock
Quote:
Originally Posted by Burkettacb View Post
Okay. So after hours of tapping. Which might i add. My fingers hurt, I am now able to activate the screen. Pausing after each tap, using my finger print area to tap "not to be confused with finger tip". The screen will activate. Also note, the standard two taps works sometimes, but with four presses, i seem to get the best results. Give it a try people. I have a theory the hardware has not failed. But yet, the activation area pixel size value changed. Either due to a conflicting app install. A intermittent system glitch etc
Sent from my LG-LS980 using xda app-developers app
Or againg, a ROM you may be using.
More detail would be helpful
ankurcshah said:
The only solution is returning the phone
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Click to collapse
Good luck with that if the phone is a D800. I took my G2 to the local AT&T store just a couple of hours ago with the same "no knock on" bug. But the sales person (who had bad breath) told me that because there was another way to get the phone to function (the back button), they won't even look at it. The fact that the knock off/on feature was a MAJOR selling point when the phone was released is apparently irrelevant.
He has a ls980 so it might not be the same for him. He can ask for a replacement
Sent from my LG-D802 using XDA Premium 4 mobile app
This happened to me this week as well, unfortunately in Canada none of the carriers will replace my device for me, LG says its user damage and are gonna charge me 125 dollars to fix it. I'm gonna see what the local repair shop says and hopefully theyll just fix it for me. It seems like this is an increasingly common issue, it's a shame that LG don't recognize that we didn't damage our phones, they sold us defective units. I'm very unhappy with LG's customer service, we should raise awareness of this and hopefully LG will come up with a solution for us
Andrew_han said:
This happened to me this week as well, unfortunately in Canada none of the carriers will replace my device for me, LG says its user damage and are gonna charge me 125 dollars to fix it. I'm gonna see what the local repair shop says and hopefully theyll just fix it for me. It seems like this is an increasingly common issue, it's a shame that LG don't recognize that we didn't damage our phones, they sold us defective units. I'm very unhappy with LG's customer service, we should raise awareness of this and hopefully LG will come up with a solution for us
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Click to collapse
Did you try the "Hidden Menu" "Touch firmware update" option? I had this issue and it got fixed with it.
try 3845#*modelnumber# eg: 3845#*800# change model number 800 with your phones model number, then tap on "Settings" and scroll down to "Update Touch Firmware"
I have a few more suggestions to make it work, let me know how it goes.

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