[Q] Cannot disable Nexus Demo - Nexus 7 Q&A, Help & Troubleshooting

I just picked up a used Nexus 7 from gamestop and i seem to be having a few issues with it. Please excuse my ignorance as i am very new to the tablet scene.
Whenever i shut my screen off, the nexus demo appears, i found the option to disable it in the settings, but when i click on it i get returned to the home screen. I also noticed that with certain things i try to click on, such as the settings shortcut in the notification bar, i get returned to the homescreen.
I factory reset through bootloader/recovery, since i dont know the vendor ID to reset it through the settings menu.
Anyone have any suggestions on how to shut that demo off / fix the "return to homescreen bug"?

lftrpllr507 said:
I just picked up a used Nexus 7 from gamestop and i seem to be having a few issues with it. Please excuse my ignorance as i am very new to the tablet scene.
Whenever i shut my screen off, the nexus demo appears, i found the option to disable it in the settings, but when i click on it i get returned to the home screen. I also noticed that with certain things i try to click on, such as the settings shortcut in the notification bar, i get returned to the homescreen.
I factory reset through bootloader/recovery, since i dont know the vendor ID to reset it through the settings menu.
Anyone have any suggestions on how to shut that demo off / fix the "return to homescreen bug"?
Click to expand...
Click to collapse
Gamestop most likely forgot to flash factory images before selling it to you. Had their shop demo. I would highly suggest unlocking the bootloader and flashing CyanogenMod. Or if you want to stay on the safe-ish side, look into flashing factory images. Good luck, I'm on my phone so grabbing links is a pain, sorry.
Sent from my Motorola XPRT

Related

[Q] Nexus 4 Screen issues

Good Morning everyone!
I m having an issue with my nexus 4. I turned on developer options and then turned on show pointer option. When I would turn my phone on from sleep there were dots all over the top (right under the status bar) on what seems like the phone touching itself all over the top of the screen. I called google for support and was told that it was a developer options issue and to do a factory reset. Before I do a factory reset I decided to turn off the developer options and the automatic touching is still happening. Any ideas whats going on?
I m running the stock and the phone is not rooted.
Thanks!
us1415 said:
Good Morning everyone!
I m having an issue with my nexus 4. I turned on developer options and then turned on show pointer option. When I would turn my phone on from sleep there were dots all over the top (right under the status bar) on what seems like the phone touching itself all over the top of the screen. I called google for support and was told that it was a developer options issue and to do a factory reset. Before I do a factory reset I decided to turn off the developer options and the automatic touching is still happening. Any ideas whats going on?
I m running the stock and the phone is not rooted.
Thanks!
Click to expand...
Click to collapse
Just did a factory reset and issue still happening. Anyone??

Help! Several major issues on 4.3 (home button, SIM, lock screen)

My N4 was away to repair a broken screen. Got it back on Wednesday and it immediately updated to 4.3. All was well, except for one weird issue where hitting a notification from the pull down would take me to the app via the pattern lock. I put this down to having played with some lock screen settings in Setting Profiles app (trying to disable it in certain settings), but it might not have been.
I've done the first device restart today, and after rebooting there are a few big issues.
1. I don't appear to have any mobile network, though wifi is connected. I had a good signal before the reboot.
2. I'm not getting a lock pattern or any lock screen at all, and it's not asked for the SIM pin
3. Hitting a notification in the pull-down makes the 'lock' clicking sound as it takes me to the app
4. The home button doesn't work. I see a slight dim of the screen and it makes the lock click sound, but nothing happens. Back and multitask work fine
Help! Any ideas? Are they known issues? Can't seem to find any reference online.
I'm on stock, using Nova Launcher
!!11oneone said:
My N4 was away to repair a broken screen. Got it back on Wednesday and it immediately updated to 4.3. All was well, except for one weird issue where hitting a notification from the pull down would take me to the app via the pattern lock. I put this down to having played with some lock screen settings in Setting Profiles app (trying to disable it in certain settings), but it might not have been.
I've done the first device restart today, and after rebooting there are a few big issues.
1. I don't appear to have any mobile network, though wifi is connected. I had a good signal before the reboot.
2. I'm not getting a lock pattern or any lock screen at all, and it's not asked for the SIM pin
3. Hitting a notification in the pull-down makes the 'lock' clicking sound as it takes me to the app
4. The home button doesn't work. I see a slight dim of the screen and it makes the lock click sound, but nothing happens. Back and multitask work fine
Help! Any ideas? Are they known issues? Can't seem to find any reference online.
I'm on stock, using Nova Launcher
Click to expand...
Click to collapse
Those are not any known issues or anything I have read since Andrid 4.3 came out. Try a factory reset to see if that solves the problem. If not, maybe the screen wasn´t the only thing broken on your device. Ask for warranty.
Thanks, will see how I get on this evening and try a factory reset if it doesn't fix itself.
Seems to be a weird problem related to the lock screen and when it should/shouldn't kick in...
!!11oneone said:
Thanks, will see how I get on this evening and try a factory reset if it doesn't fix itself.
Seems to be a weird problem related to the lock screen and when it should/shouldn't kick in...
Click to expand...
Click to collapse
Glad I could help.
Ok, I've done a factory reset. Not had much chance to play as it took hours to reinstall everything. But I've just had the word issue where selecting something from the notification tray (the setting profiles shortcut) took me to the lock screen to put in my pattern first, then took me to the app.
EDIT no pattern to when it does it, seems random and can be while I'm using the device, so the lock screen shouldn't kick in for any reason
Any ideas? Faulty device?

[Q] Screen won't turn off

For some reason my screen won't shut off when I press the power button or by itself after any amount of time. I made sure all of the settings were set right that might keep it on. I know it's not hardware damage because I've pretty much never dropped it or handled it hard. The power button still works because it will get the turn off, restart, etc screen to go. Any idea how to fix it? I already did a factory reset.
JollyGreen527 said:
For some reason my screen won't shut off when I press the power button or by itself after any amount of time. I made sure all of the settings were set right that might keep it on. I know it's not hardware damage because I've pretty much never dropped it or handled it hard. The power button still works because it will get the turn off, restart, etc screen to go. Any idea how to fix it? I already did a factory reset.
Click to expand...
Click to collapse
Dial *#0*# check some test for dimming, sleep etc.
JollyGreen527 said:
For some reason my screen won't shut off when I press the power button or by itself after any amount of time. I made sure all of the settings were set right that might keep it on. I know it's not hardware damage because I've pretty much never dropped it or handled it hard. The power button still works because it will get the turn off, restart, etc screen to go. Any idea how to fix it? I already did a factory reset.
Click to expand...
Click to collapse
Download wakelock detector and see which app is keeping your screen on.
Dialed that number, the dimming worked, but the sleep button didn't do anything. I'll try that app out and see what it says.
In my understanding *#0*# dialing is for hardware check, if sleep is not working from there means it has nothing to do with any app & better to take to service centre.
Sent from my SM-N9005 using XDA Free mobile app
It didn't do it until after I tried to change my boot screen. Know if that would do anything? No boot animations go off besides the galaxy note 3 one (no Tmobile or samsung animation, and no shut off animation). I also rooted it so would they still help me even though the knox counter is 0x1?
Any help? Using the wakelock app it says that system manager application is used a lot more than anything else. Not sure what it does.
JollyGreen527 said:
It didn't do it until after I tried to change my boot screen. Know if that would do anything? No boot animations go off besides the galaxy note 3 one (no Tmobile or samsung animation, and no shut off animation). I also rooted it so would they still help me even though the knox counter is 0x1?
Click to expand...
Click to collapse
Try to flash complete stock ROM & clear Data & Catch before & after flashing from recovery may HELP.
That fixed it. I'm not sure why I didn't already try that since it seems kinda obvious. Don't know what made it do that though. Do you happen to know if modifying the boot animations can mess other things up?
Mine its not rooted still stock and all of the sudden started acting up with the screen ....i did the *# test and when i went to sleep it went straight to the lock screen ...any idea what could cause it
help
JollyGreen527 said:
That fixed it. I'm not sure why I didn't already try that since it seems kinda obvious. Don't know what made it do that though. Do you happen to know if modifying the boot animations can mess other things up?
Click to expand...
Click to collapse
how do you do that cause I'm having same problem s
scooby 777 said:
how do you do that cause I'm having same problem s
Click to expand...
Click to collapse
Mine does this every time I reboot my phone. I have to press and hold the home key, pick the pie chart, pick RAM and pick "Clear Memory". Then it's fine til the next time I reboot.
I had my note 3 with the same problem and solved it recovering the original system/media/bootsamsung*.qmg files.
to solve the problem plug the charger and unplug it immediately and plug it back in again. This is also the reason why the problem is caused. So doing it again will solve the problem.

Two problems cropped up -- Smart Lock blank and random temporary screen freezes

Hi, I've been using the essential phone for several days. I've installed lots of apps and other than a random glitch now and then, thinks have worked well. The system seems to be considerably faster than a Galaxy S8.
Two problems have recently surfaced. Smart lock is totally messed up (It was working for a while.) Now, when I get to the point in Security settings where I enter my pin, I get a blank screen. I've tried all sorts of things save a system reset. Smart Lock itself doesn't work any longer.
The other issue is intermittent freezes that last several seconds. Whatever the system is doing, it isn't responding at all. If I wait for a while, it proceeds to work fine.
Has anyone seen similar behaviors? Any suggestions short of a hard reset?
Thanks
charlie.s said:
Hi, I've been using the essential phone for several days. I've installed lots of apps and other than a random glitch now and then, thinks have worked well. The system seems to be considerably faster than a Galaxy S8.
Two problems have recently surfaced. Smart lock is totally messed up (It was working for a while.) Now, when I get to the point in Security settings where I enter my pin, I get a blank screen. I've tried all sorts of things save a system reset. Smart Lock itself doesn't work any longer.
The other issue is intermittent freezes that last several seconds. Whatever the system is doing, it isn't responding at all. If I wait for a while, it proceeds to work fine.
Has anyone seen similar behaviors? Any suggestions short of a hard reset?
Thanks
Click to expand...
Click to collapse
Did you perhaps add a company exchange account or add some other device administrator? I've seen this issue on some of my previous devices where smart Lock is setup but my company's exchange policy disables it
Sent from my PH-1 using Tapatalk
For smart lock goto settings -> security - >trust agents
Toggle smart lock off, return to settings, go back and toggle it back on. Smartlock is back to normal, atleast this did the trick for me.
Thanks to both of you for ideas. I disabled two device administrators, both related to Lookout. I also deleted my fingerprints and all security. When I re-entered everything, all seemed fine. I will see if it behaves and then narrow it down.
StephenMilone said:
For smart lock goto settings -> security - >trust agents
Toggle smart lock off, return to settings, go back and toggle it back on. Smartlock is back to normal, atleast this did the trick for me.
Click to expand...
Click to collapse
I had to do this but I had to reboot instead of just exiting out of settings.
I'm running into this issue as well. Sometimes I can get it to come back, but then after a restart, it's broken again...
---------- Post added 6th September 2017 at 12:14 AM ---------- Previous post was 5th September 2017 at 11:32 PM ----------
Ok, so it seems like the same issue is showing up for OnePlus devices since recently: https://forums.oneplus.net/search/13954406/?q=smart+lock&o=date&c[title_only]=1
I can get mine to freeze consistently by using chrome and browsing to flipboard.com. After I login the whole phone will freeze, not even the power button doesn't do anything. I've tested it out on a few other devices and I get the same response from my Nexus 9, also running 7.1.1. In this case at least I don't believe it's the phone but something to do with Android itself.
I'm getting the freeze as well but my power button works, when I turn off the screen and turn it back on it works for a few seconds and then freezes again
Sent from my PH-1 using Tapatalk
charlie.s said:
Hi, I've been using the essential phone for several days. I've installed lots of apps and other than a random glitch now and then, thinks have worked well. The system seems to be considerably faster than a Galaxy S8.
Two problems have recently surfaced. Smart lock is totally messed up (It was working for a while.) Now, when I get to the point in Security settings where I enter my pin, I get a blank screen. I've tried all sorts of things save a system reset. Smart Lock itself doesn't work any longer.
The other issue is intermittent freezes that last several seconds. Whatever the system is doing, it isn't responding at all. If I wait for a while, it proceeds to work fine.
Has anyone seen similar behaviors? Any suggestions short of a hard reset?
Thanks
Click to expand...
Click to collapse
You had the Smart Lock issue too?! I did a Factory Reset to fix it here, no amount of powering off/on the device, toggling Smart Lock in "Trust Agents" did the trick, it just...was blank one day. I've had the freezes as well, haven't noticed those after the Factory Reset now that I think about that.
RMarkwald said:
You had the Smart Lock issue too?! I did a Factory Reset to fix it here, no amount of powering off/on the device, toggling Smart Lock in "Trust Agents" did the trick, it just...was blank one day. I've had the freezes as well, haven't noticed those after the Factory Reset now that I think about that.
Click to expand...
Click to collapse
Interestingly, the pauses and stuttering disappeared at the same time. It is exceedingly difficult to convert these anecdotal comments into a meaningful diagnosis.
In any case, so far, so good.
Thanks! This is one of two major bugs driving me nuts!
Disabling then directly restarting worked for me, thanks for the tip!
Sent from my PH-1 using Tapatalk
I updated to NMl64c yesterday and both problems I refer to in the original post appear to have been fixed
charlie.s said:
I updated to NMl64c yesterday and both problems I refer to in the original post appear to have been fixed
Click to expand...
Click to collapse
The Smart Lock blank bug happened to me again yesterday, and I've been on NMI64c for a couple of days. De-activating Smart lock and rebooting got it working again.
Same problem with smart lock here and only solution seems to disable it, restart the phone and re-enable it...
Weird
Deppi0 said:
Same problem with smart lock here and only solution seems to disable it, restart the phone and re-enable it...
Weird
Click to expand...
Click to collapse
You should be able to disable it in the trust agents settings, back up one menu the enable it again without needing to restart the phone. Someone else pointed this it out a few posts back and it's always worked for me.
StephenMilone said:
For smart lock goto settings -> security - >trust agents
Toggle smart lock off, return to settings, go back and toggle it back on. Smartlock is back to normal, at least this did the trick for me.
Click to expand...
Click to collapse
1. Turn off all Smartlock agents that are on the list.
2. Reboot.
3. Turn them back on.
I have experienced a few freezes. Only after the phone sits for an extended period of time and it goes to sleep and after a restart. I actually haven't had this happen lately, seems like things some how worked themselves out. As far as smart lock I haven't had any such issue. I do have a question regarding smart lock. Do you guess have an option for enabling it when it is connected to a specific Bluetooth device?
jglazer said:
1. Turn off all Smartlock agents that are on the list.
2. Reboot.
3. Turn them back on.
Click to expand...
Click to collapse
Didn't have to reboot. Just turned it off then back on
Sent from my PH-1 using Tapatalk
jasonevil said:
Didn't have to reboot. Just turned it off then back on
Sent from my PH-1 using Tapatalk
Click to expand...
Click to collapse
All the on/off tinkering with trust agents has worked for me, but the fix has always been temporary. Smart Lock will be OK for a day or so before returning to its broken state/blank screen in the settings. Wish there was someone (a company) who knew what this was about and could fix it.

Remove Lock Screen from Android Head Unit

Hi,
Just got an Android Head unit. All was working well until I installed Bit Defender. I stupidly tried the anti theft function (Which sets a "one time" pin on the device).
Problem is I now need to enter a pin every time i start the car. Its some how turned on the android lock screen and I cant see how to remove it.
Any ideas? I >think< this is the standard android lock screen rather than something bit defender specific. Uninstalling Bit defender does not remove it.
Tried contacting the seller who advised not to perform a factory reset. Looking at other posts it seems others have performed factory resets... What (Apart from normal apps etc) will i have to set up again if i do so?
Thanks very very much for any advice. This is driving me crazy.
I also had the problem once and i had to do a factory reset. But if you use titanium backup it´s not so bad.
Screen lock Allwinner QUAD CORE T3
I did the same exact thing using Find My Device, thinking that the password is not changeable but removable so the only solution to get rid of the password each time the car starts is to hard reset it?
Hello, did you manage to solve the problem?
Hi again, I also set a password and I can’t disable it, this is bothering me a lot, did any of you guys find a solution? Thank you in advance for any and all help!
le_mi said:
I also had the problem once and i had to do a factory reset. But if you use titanium backup it´s not so bad.
Click to expand...
Click to collapse
How to hard reset android head unit? can any one pls help on this.
Solution for this for me is Quickshortcutmaker. When you start the app, then search for the app that's called search suggestions. And open it.
Now you can search all possible settings in android, which often are hidden and not accessible. Try secure or something like that, to access the lock settings and there you can remove it.
Thank you, I will try this today and report back. Will it require root?
No root needed
Hey sorry to bother you again. I tried it, but the app just takes me back to PIN settings on Android settings which is grayed out and not clickable. Can you tell me what I’m doing wrong? I’m a noob and not sure what the purpose of this app is to begin with. Here is a 40-second video I shot about what I did, below. Thank you for your help, I appreciate it a lot and don‘t take it for granted.
https://youtu.be/J7UY4zolePQ
Strange, for me it is working. My PIN bar is active, when i click on it. It asks me for my PIN.
Can’t remove screen lock
Hi everyone,
I am having the same problem - I cannot remove the screen lock / pattern set up on my Android car head stereo device. I have tried all sorts - going into advanced settings and turning off the ‘screen lock service’, turning off ‘find my device’, removing my google account.
It is so frustrating having to type this in every time the car starts!
I am currently in the process of downloading QuickShortcutMaker. Will keep you updated...
I was in my car trying to solve the problem when you posted your message, and I think I solved it!!! I just cleared credentials and the PIN went away. Go here: Android settings / Security & Location / Advanced (Trust agents), I can’t see what’s next because once you remove the PIN it doesn’t show you the menu, it just says “To use, first set a screen lock”. But somewhere in there, there is “Clear credentials” which did the job! It didn’t affect anything else as best as I can tell, but it’s been only 2 minutes since I managed to do it.
Hi!
I’m currently on quickshortcutmaker and can’t find what you’ve found. Are you on this app?
Thank you so much for your help by the way! I feel like I’m close
There is “trusted credentials” on here tho
No, I didn’t use the quickshortcutmaker, I did it through the Android settings. Here’s a video of what I’ve done, your setup may differ but this is the general idea:
https://youtu.be/J7UY4zolePQ
---------- Post added at 12:38 PM ---------- Previous post was at 12:26 PM ----------
Sorry wrong video on the previous message, here is the correct one:
https://youtu.be/f3Hx81tO15A
Maybe it's a ROM issue. I use Malaysk ROM.
Contrary to the topic starter, I found this thread because I wanted to have a lockscreen. I don't like the idea that when my headunit might get stolen the thief can view all kinds of personal information.
So I tried quickshortcutmaker and I could enable it. So far so good.
However, with the screen lock also automatically came a screen timeout which is set to about 10 seconds. So every 10 seconds the screen goes blank. This is of course totally unacceptable for a car head unit. The screen has to stay on until I turn it off.
Unfortunatly I haven't found a setting for the screen timeout. And about the screen lock: you can turn it on and choose different methods, but you can't turn it off. The option to turn it off exists, but it just doesn't work.
I had this problem yesterday and just figured out how to fix this. Deleting the Credentials and disabling through the regular settings menu does not work. Everything would just revert back, so I downloaded an app from the Play Store called Android Settings X. There you can reach the hidden settings. Choose "Choose screen lock (SetupChooseLockGeneric)" to remove the Screen Lock. If that option doesn't work there is another one, 2 options down, called "Settings (ScreenLockSuggestion)". Remove the Lock Screen here. Bam, fixed! This is the only way I know of that actually removes the Lock Screen and will not revert back.
hneel said:
Contrary to the topic starter, I found this thread because I wanted to have a lockscreen. I don't like the idea that when my headunit might get stolen the thief can view all kinds of personal information.
So I tried quickshortcutmaker and I could enable it. So far so good.
However, with the screen lock also automatically came a screen timeout which is set to about 10 seconds. So every 10 seconds the screen goes blank. This is of course totally unacceptable for a car head unit. The screen has to stay on until I turn it off.
Unfortunatly I haven't found a setting for the screen timeout. And about the screen lock: you can turn it on and choose different methods, but you can't turn it off. The option to turn it off exists, but it just doesn't work.
Click to expand...
Click to collapse
You might try Android Settings X as mentioned in my reply to the thread. Even though you have the opposite issue, i.e. wanting the lock screen, I'm pretty sure I saw a screen timeout option in this app, and since normal methods did not work to remove but using this app did, you might try it out.
uygarpolat said:
Hi again, I also set a password and I can’t disable it, this is bothering me a lot, did any of you guys find a solution? Thank you in advance for any and all help!
Click to expand...
Click to collapse
Rest the device

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