Sometimes I have to knock knock twice in a row to turn on the device. It works well turning off, but on half of the times it won't turn on. Gotta do it twice. Anyone else encounter this?
Sent from my LG-D803 using Tapatalk 4
Brava27 said:
Sometimes I have to knock knock twice in a row to turn on the device. It works well turning off, but on half of the times it won't turn on. Gotta do it twice. Anyone else encounter this?
Sent from my LG-D803 using Tapatalk 4
Click to expand...
Click to collapse
I do not have that issue, but I have read in a few posts that it can be dependent on where you are knocking on the screen.
hd-renegade said:
I do not have that issue, but I have read in a few posts that it can be dependent on where you are knocking on the screen.
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Click to collapse
Yes! Excellent advice
Sent from my LG-D803 using Tapatalk 4
Brava27 said:
Yes! Excellent advice
Sent from my LG-D803 using Tapatalk 4
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Click to collapse
I think the biggest issue is knock speed.... mine works damn near 100% when I slowed down some, and knock slower like it showes at the end of the G2 commercials....
I think it's partially related to the proximity sensor. There are times when I can't get the knock on to work at all and when I hit the power button the screen shuts right back off.
Usually a few swipes over the sensor makes it work again. Sometimes I'll go in and turn the Knock On gesture off and back on and then it seems to work great for a while too.
csmith8507 said:
I think it's partially related to the proximity sensor. There are times when I can't get the knock on to work at all and when I hit the power button the screen shuts right back off.
Usually a few swipes over the sensor makes it work again. Sometimes I'll go in and turn the Knock On gesture off and back on and then it seems to work great for a while too.
Click to expand...
Click to collapse
This is my exact problem. The phone just decides it doesn't want to wake up with knock-on...but after I press the power button, it only turns on for half a second and it's out again. I never tried swiping over the sensor, but hopefully it works because it's mighty annoying when it does it during a call!
I wonder if there's a fix for this?
canecbr600 said:
I think the biggest issue is knock speed.... mine works damn near 100% when I slowed down some, and knock slower like it showes at the end of the G2 commercials....
Click to expand...
Click to collapse
this, if you are trying to do it like you did on the nokia n9 or nokia 8800 then it won't work
slow deliberate knocks are the only way
waiting on the g2 to arrive, but on my review unit, knock knock wouldn't respond correctly if i left the phone on the table, but if i picked it up, it would work nothing scientific here just an experience of one person and one prototype
I had the same issue... What fixed it is: 1. I found that the screen protector was hindering it somewhat. 2. Go to settings->display->screen-off effect-> and change it to simple. This REALLY seemed to help. Let us know!
in_dmand said:
I had the same issue... What fixed it is: 1. I found that the screen protector was hindering it somewhat. 2. Go to settings->display->screen-off effect-> and change it to simple. This REALLY seemed to help. Let us know!
Click to expand...
Click to collapse
I did notice it does seem to behave better when set to simple for the screen off animation.
My screen protector does have a cutout around the sensors. Keeping the sensor area clean enough to qualify as having OCD does seem to make it work properly the first time, every time. Maybe it's overly sensitive?
Edit: Scratch that. 30 seconds later it's behaving erratically again. Maybe it's not the fact that it's clean, but the swiping over the sensor that temporarily resolves it.
it also seems to work much better when knocking at the top of the screen where the statusbar would be.
So I ended up swapping the phone out over the weekend for a new one and now everything seems to work just fine. Seems to indicate that it's not a software problem, but rather a hardware issue with the proximity sensor.
Guys if your covering the sensors when turing the device screen on it will turn right back of on you. It's a feature LG implemented so the device wouldnt wake up in your pockets. Don't cover the sensors.
Need a little example? Grab your phone and cover the sensors and knock knock knock.You can knock till the cows come home but it will not turn on. Same thing goes for the power button but its a little delayed and will turn the screen on for half a sec and turn right back off. Practice not to do this because your phone isn't broken. There is actually a thread on this deep in the forums somewhere but its been forgotten now.
Walter21026 said:
Guys if your covering the sensors when turing the device screen on it will turn right back of on you. It's a feature LG implemented so the device wouldnt wake up in your pockets. Don't cover the sensors.
Need a little example? Grab your phone and cover the sensors and knock knock knock.You can knock till the cows come home but it will not turn on. Same thing goes for the power button but its a little delayed and will turn the screen on for half a sec and turn right back off. Practice not to do this because your phone isn't broken. There is actually a thread on this deep in the forums somewhere but its been forgotten now.
Click to expand...
Click to collapse
This is true however there are indications of problems with the proximity sensor as well. Some of the devices are behaving as if tree sensor is covered even when it's not.
Walter21026 said:
Guys if your covering the sensors when turing the device screen on it will turn right back of on you. It's a feature LG implemented so the device wouldnt wake up in your pockets. Don't cover the sensors.
Need a little example? Grab your phone and cover the sensors and knock knock knock.You can knock till the cows come home but it will not turn on. Same thing goes for the power button but its a little delayed and will turn the screen on for half a sec and turn right back off. Practice not to do this because your phone isn't broken. There is actually a thread on this deep in the forums somewhere but its been forgotten now.
Click to expand...
Click to collapse
Thanks for this.. Very insightful.. I tried it immediately LOL
I had the same issue. I have no case or screen protector on, and was not covering the sensor when trying to wake the phone. For some reason though, knocking wouldn't wake the phone, and pressing the power button would only turn the screen on for a few seconds. I want even given enough time to get past the unlock screen. I went into the store and they are sending me a replacement that should come in later this week. It doesn't happen all the time. It is much more noticeable after receiving a call though.
Sent from my VS980 4G using Tapatalk
Definitely is dependent on the proximity sensor. If i just have my thumb on the edge of the phone by the sensor it will display this problem. Even with my finger a half to one inch above it will do this. I will be paying close attention to the proximity sensor from now on when it doesn't work. Still have a few days to return and thought i had an issue but maybe not.
Sent from my VS980 4G using xda app-developers app
sometimes its also greasy fingers, at least in my case, rarely though
As long as you tap twice the same place it's working fine. If distance between first and second tap is greater than 1 - 1.5 cm it won't work.
Got the same problem on my d802...when i left the phone on my table for 2-3min it wont wake up on first knock knock even power key wake it up for 1sec after auto turn off again....even with no screen protector....i noticed that sometimes there is a delay about 5-10sec after knock knock and screen turns on....other thing i noticed when i knock on immediently after turning off it works 100%....BUT i also noticed when i knock on after a while it turns on and i can unlock got vibration and sound of the unlock but i cant see anything. Screen looks like its off but when i look closely i can hardly see widgets and when i set effect to tv out i can see the effect by pressing the power button...when i press the power button again screen turns on like normal...i noticed sometimes on a rerboot the lg bootlogo disapears the led is working an showing all colors but the boot animation is gone like the screen is off at the bootup...dont know why after the bootup the pin lock screen is showing up normal....sorry for my english^^
Related
On my AT&T Galaxy S4, when I make a call the screen goes black when my face is next to the phone. This is good.
However, when I take my face away the screen will NOT turn back on. If I hit the [Power] or [Home] buttons, it will sometimes turn back on, but often times it requires several presses or requires me to wait several seconds until the phone turns back on.
I've tested this on stock and several ROMs...
Does anybody else have this problem?
If so, how do I fix it?
Pick up a can of compressed air and blow in the earphone. Sure enough the proximity sensor works perfectly now. I have solved this problem doing this. Tell me something
Enviado desde mi GT-I9505 usando Tapatalk
Dial *#0*#
You can test your proximity sensor readings here. It should turn the screen green and vibrate the phone constantly while your hand is in proximity. You can also see the numerical readings. The sensor works to about 6 inches.
If its not acting right, then you need to use faux kernel or you have a hardware failure.
If it is acting right, then use a better rom.
I seem to be having this issue on stock rom. When I bring my hand close to the sensor in diagnostic mode it goes green...but it doesn't stop when I remove my hand and there's nothing nearby. This seems to mirror the experience...where the phone goes black during a call, but doesn't wake up when it's removed.
faiyo said:
Dial *#0*#
You can test your proximity sensor readings here. It should turn the screen green and vibrate the phone constantly while your hand is in proximity. You can also see the numerical readings. The sensor works to about 6 inches.
If its not acting right, then you need to use faux kernel or you have a hardware failure.
If it is acting right, then use a better rom.
Click to expand...
Click to collapse
Hubris2 said:
I seem to be having this issue on stock rom. When I bring my hand close to the sensor in diagnostic mode it goes green...but it doesn't stop when I remove my hand and there's nothing nearby. This seems to mirror the experience...where the phone goes black during a call, but doesn't wake up when it's removed.
Click to expand...
Click to collapse
Yes, exactly!
I've flashed back to stock and tried that test screen. The sensor is OK at first, then I move my hand over it and it turns green and stays that way even after I remove my hand.
It seems like the sensor is half-working but gets stuck in the "on" position...
that sucks. i guess its time to contact samsung about warranty. just make sure theres no dirt on the sensor or anything
rpboronat said:
Pick up a can of compressed air and blow in the earphone. Sure enough the proximity sensor works perfectly now. I have solved this problem doing this. Tell me something
Enviado desde mi GT-I9505 usando Tapatalk
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Click to collapse
This is exactly what I done only I used a straw and I blew down it like hell and it cleared the problem. My phone was due to be returned to be fixed under warranty today but I tried a last ditch attempt and with the straw and blowing down it into the earpiece (aimed slightly towards the proximity sensor) I managed to sort the problem. It seems a little dirt or dust gets on the sensor and makes it malfunction.
Give it a whirl to see if it will work
I know many people are having issues regarding the cases that wake your device. A supposed fix is to turn on wifi or bluetooth. I just noticed today that if you're using a custom kernel with doubletap2wake or sweep2sleep/sweep2wake, that enabling either the doubletap2wake or sweep2wake fixes the issue as well. The screen auto wakes using my Slimline if that option is enabled. I feel like this is a step towards narrowing down what the issue is.
Actually, I flashed a kernel with those features because of my wake issue and it didn't fix anything at all for me. It was exactly the same, which I expected. It was annoying, though, so now I just leave Bluetooth on and call it a day. I'd rather leave Bluetooth on all the time than have to double tap every other time I open my cover.
Sent from my Nexus 7 using xda app-developers app
RKight said:
Actually, I flashed a kernel with those features because of my wake issue and it didn't fix anything at all for me. It was exactly the same, which I expected. It was annoying, though, so now I just leave Bluetooth on and call it a day. I'd rather leave Bluetooth on all the time than have to double tap every other time I open my cover.
Sent from my Nexus 7 using xda app-developers app
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Click to collapse
I've had doubletap2wake on all day. Airplane mode on. Works every time. The moment I turn off doubletap2wake--the issue pops back up. Maybe I'm just lucky/unlucky?
I always read around the forums that everyone has problems with the magnetic wake lock, but my supcase works perfectly fine each time I open it. I'm even running CM10.2 Kang FLO version. Could it just be the cases people are using?
Highly doubtful. If it was something where the case would intermittently work all the time or it was something that only happened if the case was folded back, then maybe it is the case.
In this case, the case works all the time until there is some wifi event or the unit goes into deep sleep under certain situations.
The case is a simple magnet. It just needs to be strong enough to be recognized consistent. It has no idea about those states.
FWIW Google/Paul mentioned they were able to duplicate the problem and are looking into it.
sfhub said:
FWIW Google/Paul mentioned they were able to duplicate the problem and are looking into it.
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Click to collapse
Oh really!? I hadn't seen that. Looking forward to a future update then.
natezire71 said:
I've had doubletap2wake on all day. Airplane mode on. Works every time. The moment I turn off doubletap2wake--the issue pops back up. Maybe I'm just lucky/unlucky?
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Click to collapse
Rather than using airplane mode, have you tried leaving bluetooth off and WiFi on but setting WiFi to sleep when the screen is off? That's how I can reproduce it consistently.
Sent from my ADR6425LVW using xda app-developers app
RKight said:
Rather than using airplane mode, have you tried leaving bluetooth off and WiFi on but setting WiFi to sleep when the screen is off? That's how I can reproduce it consistently.
Sent from my ADR6425LVW using xda app-developers app
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Click to collapse
Dammit. That did it. Oh well, I was wrong.
How i solved the wake lock/ lock screen hang issue
Guys I solved the issue you will not believe how simple this is lol.
The issue isn't hardware or software for that matter, YES NOTHING IS WRONG WITH YOUR DEVICE, but rather the cases themselves. My issue was that the device would lock whenever i had the case folded back in either Landscape or Portrait mode. Whether watching a movie or reading my books/ comics
I tried toggling Bluetooth and Wi-Fi no success. :crying:
However, I realized that using the Tablet in the case while it was in "standing mode". The screen would never turn off. So I tried something and took a leap of faith.
Instead of having the power button inline with the magnetic strip on your case, i just turned it upside down i.e. swivel the tablet so that the power button was no longer inline with the magnetic strip. I held the edges near the power button as hard as i could and it never once turned off lol. :good:
Yet as soon as i turned it back to be inline with the strip it turned off instantly with every try. After several exhausted tries I am certain that this works and solves the issue. as a matter a fact once you remove the magnetic strip side away from the power button it doesn't hang up, the effect is instantaneous.
NeoSlyfer said:
Guys I solved the issue you will not believe how simple this is lol.
The issue isn't hardware or software for that matter, YES NOTHING IS WRONG WITH YOUR DEVICE, but rather the cases themselves. My issue was that the device would lock whenever i had the case folded back in either Landscape or Portrait mode. Whether watching a movie or reading my books/ comics
Click to expand...
Click to collapse
Glad you fixed your own issue, specific to your (badly designed) case. This thread is about the 2013 Nexus 7 not waking after being asleep for a while, using the magnetic case sensor.
khaytsus said:
Glad you fixed your own issue, specific to your (badly designed) case. This thread is about the 2013 Nexus 7 not waking after being asleep for a while, using the magnetic case sensor.
Click to expand...
Click to collapse
Well then
NeoSlyfer said:
Guys I solved the issue you will not believe how simple this is lol.
The issue isn't hardware or software for that matter, YES NOTHING IS WRONG WITH YOUR DEVICE, but rather the cases themselves. My issue was that the device would lock whenever i had the case folded back in either Landscape or Portrait mode. Whether watching a movie or reading my books/ comics
I tried toggling Bluetooth and Wi-Fi no success. :crying:
However, I realized that using the Tablet in the case while it was in "standing mode". The screen would never turn off. So I tried something and took a leap of faith.
Instead of having the power button inline with the magnetic strip on your case, i just turned it upside down i.e. swivel the tablet so that the power button was no longer inline with the magnetic strip. I held the edges near the power button as hard as i could and it never once turned off lol. :good:
Yet as soon as i turned it back to be inline with the strip it turned off instantly with every try. After several exhausted tries I am certain that this works and solves the issue. as a matter a fact once you remove the magnetic strip side away from the power button it doesn't hang up, the effect is instantaneous.
Click to expand...
Click to collapse
What case are you using? Lol
natezire71 said:
What case are you using? Lol
Click to expand...
Click to collapse
I am not sure what the case is called it's a generic case however I have photos of said case
Sometimes when I hold my phone in a way that covers the light sensor, the screen turns off. I'm guessing it's a feature like when you hold it up to your face to talk or something, but it can get extremely annoying when it misfires (which it does a lot).
Has anyone else had this issue? I have a white D801 on tmo.
Isn't this a feature of all phones so that you dont accidentally turn it on and dial while it's in your pocket?
Raverrevolution said:
Isn't this a feature of all phones so that you dont accidentally turn it on and dial while it's in your pocket?
Click to expand...
Click to collapse
Yeah, but it's only supposed to happen when you are calling someone. My G2 is turning off if I cover the ambient light sensor while on the homescreen.
I have just started noticing this on my Verizon G2 with clean rom. It seems to do it the most right after you turn on the screen.
benhando said:
I have just started noticing this on my Verizon G2 with clean rom. It seems to do it the most right after you turn on the screen.
Click to expand...
Click to collapse
Yup. I'm on stock and it happens the same. If you turn on the screen with your thumb over the sensor, it will turn off again quickly even if you try to unlock it.
When this happens it usually happens when you are in a hurry. Really annoying but the benefit is that this feature does keep the phone off when it is in your pocket knocking about.
-LG G2
Do you folks have the option enabled that turns the screen off if it doesn't detect your eyes on it? That may be the culprit when covering the sensors.
I'm using the default screen lock, with swiping, and it happened 2 times in the last 3 days, that my camera was turned on, in my pocket. (The phone is in a leather pouch)
is there a way, to disable the camera on the lockscreen (swipe left)?
It´s not the lock screen. It´s because of volume buttons. If you hold it pressed for some time volume up starts quick memo and volume down starts the camera. I have the same problem: phone carried in a pouch. I wonder if there is a way to disable it since I don´t really use quick keys.
I've never had this issue in the past week and half that I've had this phone without any case on.
The back volume rocker buttons are definitely getting pressed if your camera is turning on. When you put the phone in your pocket, do you put the camera facing towards you or away?
Mine is doing the same, actually. Yesterday I logged into my Google Plus page and saw there were new photos uploaded, ready for review. There were 8 or so pictures taken inside my pocket.
I would have thought that the proximity sensor would immediately put the device back to sleep if the camera was turned on inadvertently while holstered or pocketed...?
Klotar said:
I would have thought that the proximity sensor would immediately put the device back to sleep if the camera was turned on inadvertently while holstered or pocketed...?
Click to expand...
Click to collapse
You're right! I completely forgot about that.
I think the proximity sensor (located between front camera and the earpiece) should prevent the camera from turning on and I just did a quick test.
Phone in hand, pressing volume down rocker results in the camera turning on. This is normal.
To simulate phone in pocket, I took a shirt and used 1 layer to cover the proximity sensor and then pressed the volume down rocker. The phone did not turn on.
Quick easy test, took 10 seconds, give it a try to see if your camera still turns on. If not, something else other than the volume down rocker is turning on your phone.
This might be a stretch, but I've noticed the phone turns on by itself sometimes when putting it down on the desk. I'm thinking it's picking up a double-knock signal some how in the pocket and further movements cause the lock screen to slide to the right (which is the camera).
I would have thought that the proximity sensor would immediately put the device back to sleep if the camera was turned on inadvertently while holstered or pocketed...?
Click to expand...
Click to collapse
I can confirm this is not accurate. I put my g2 in my pocket and launched the camera with the vol down action, and it loaded.. Multiple times.
However I'm on the sprint g2 and removed a bunch of junk I didn't think I'd need so I could have deleted something that would prevent the phone from waking if the proximity sensor was tripping. Maybe?
Sent from my LG-LS980 using xda-developers app
bearsblack said:
However I'm on the sprint g2 and removed a bunch of junk I didn't think I'd need so I could have deleted something that would prevent the phone from waking if the proximity sensor was tripping. Maybe?
Click to expand...
Click to collapse
I don't think so. I'm on T-Mobile, and while I rooted my phone last night, I had the issue prior to rooting.
bearsblack said:
I can confirm this is not accurate. I put my g2 in my pocket and launched the camera with the vol down action, and it loaded.. Multiple times.
However I'm on the sprint g2 and removed a bunch of junk I didn't think I'd need so I could have deleted something that would prevent the phone from waking if the proximity sensor was tripping. Maybe?
Sent from my LG-LS980 using xda-developers app
Click to expand...
Click to collapse
Cover the proximity sensor and hold down the volume down rocker button to see if it goes to the camera app.
I tried it about 8-10x and during that time, the phone never goes to the camera app if the proximity sensor is covered.
yyz123 said:
Cover the proximity sensor and hold down the volume down rocker button to see if it goes to the camera app.
I tried it about 8-10x and during that time, the phone never goes to the camera app if the proximity sensor is covered.
Click to expand...
Click to collapse
Obviously lol... But nope.. Still loading the the camera with sensors covered. I'm not too worried about it tho. I haven't unlocked this phone in my pocket yet. Even with knock on active.
Sent from my LG-LS980
I have the T-mo one and I keep getting the camera and quick notes opening. It's super annoying. I have recently turned my phone arround, now the screen faces outward. It seems to be helping, I have not had it happen since.
Stop wearing your girlfriends pants
Sent from my LG-D803 using XDA Premium 4 mobile app
Must be some thin ass pants. Never once had happened to me. Proximity cover still lets cam launch.
xdafoundingmember said:
Stop wearing your girlfriends pants
Sent from my LG-D803 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Lol... I wish it was that easy.
I wear black 5.11 tactical pants everyday at work that have plenty of room and I have this issue.
did anybody find a way to turn the Vol Up/Down functions on lockscreen off?
I reckon an Xposed mod could help you with that.
I have been having the same problem and yesterday deleted 17 photos taken from inside my pocket in the last 2 days while I was at work. I have no case on the phone at the moment and I am not rooted.
Sent from my VS980 4G using xda app-developers app
I had the exact same problem when I first got this phone. Had no idea the camera was on until I felt my phone extremely hot in my pants. A case solved that problem for me.
robogo1982 said:
I reckon an Xposed mod could help you with that.
Click to expand...
Click to collapse
strangely enough, it lets you control the Vol keys only for the screen off (which would help everybody in this thread, yes) but i'm also looking to disable it for the lockscreen.
I bought a used V20 with a defective screen. I change it, everything work for fine, but i notice a strange behaviour with the second screen.
The second screen is always on and i can unlock it by only touching the finger print sensor. BUT at night (or in the dark), the second screen turn off and i need to press 2 times on the power button to wake the phone.
The Knock On feature doesn't work too in the dark.
The light sensor seems to work correctly.
I would love to post a video but i can't......
This is an issue or it is normal ??
Thanks for your help !
Sounds like Doze.
I don't find anything related to Doze or "standby" about this screen.
check "daily timeout" on Show when main screen off. Seem u turn this function on at night
David_26 said:
I bought a used V20 with a defective screen. I change it, everything work for fine, but i notice a strange behaviour with the second screen.
The second screen is always on and i can unlock it by only touching the finger print sensor. BUT at night (or in the dark), the second screen turn off and i need to press 2 times on the power button to wake the phone.
The Knock On feature doesn't work too in the dark.
The light sensor seems to work correctly.
I would love to post a video but i can't......
This is an issue or it is normal ??
Thanks for your help !
Click to expand...
Click to collapse
thophan1975 said:
check "daily timeout" on Show when main screen off. Seem u turn this function on at night
Click to expand...
Click to collapse
Don't seems to change anything
Could it me the last security update ??
I reset the phone today and same "issue"
David_26 said:
Don't seems to change anything
Could it me the last security update ??
I reset the phone today and same "issue"
Click to expand...
Click to collapse
Sounds like there is an issue with the proximity sensor (not light sensor).
It's setup to turn the second screen off as well as disable knock on if the phone is in your pocket. Even during daylight hours if you put your finger within an inch of the sensor when the main screen is off, it should trigger it.
It seems your sensor may just be messed up.
David_26 said:
Don't seems to change anything
Could it me the last security update ??
I reset the phone today and same "issue"
Click to expand...
Click to collapse
There are a few apps on the play store you can try to fix it if you are rooted. You could also try a sensor app to see if the proximity sensor is showing feedback properly although you might need to be rooted for the apps to show the proximity sensor properly (not sure). My note 4 had a hardware test in the service menu not sure how to do it on V20 though.
Same Issue
Edit: Resolved the issue. Please read this post. There is a small rubber gasket-type thing that sits in the hole of the phone's frame where the proximity sensor is positioned. That rubber gasket was not included with my replacement screen. I pulled the rubber piece out of my original, broken screen, and installed it into my replacement screen. I am no longer having issues with the phone in the dark.
I am experiencing the same issue. I have a T-Mobile LG v20 (H918) and I cracked the screen last week. I ordered a replacement LCD assembly and installed it myself. Everything works fine during the day or in a well lit room, but at night, in a dark room, I experience all of the issues you are reporting. I am finding other posts online with our same issue, but as of yet, no resolution.
Even though the second screen is set to always be on, at night, in a dark room, it turns off almost immediately after locking the phone. It is almost as if the phone is in a "deep sleep" or something, because the following also occurs:
Knock On will not wake the phone
Fingerprint sensor will not wake the phone
Even connecting to the phone via AirDroid / AirMirror the phone doesn't wake
Need to press the power button multiple times to wake phone
Providing a light source immediately turns on second screen and resolves all issues