I am looking at buying a 7" pure android 4.4.2 stereo navigation unit for my car. The only real drawback I can tell is that the unit will completely shut down when I turn the key off. It does have an unswitched power wire and a switched power wire. My initial assumption was that the unit would not shut down when the key is turned off, but go into standby like my phone died when i press power button. But the vendor says it will shut down and take over a minute to boot up when I start the car.
I just found an app called Autosleeper Auto Power On-Off. It will bring the phone out of standby when I connect power to it and put it into standby when I disconnect power. Will something like that work on the android stereos?
Does anyone have any experience with the units with the two power wires and can give me some insight?
Thanks
Drw
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"Hello. Problem: after updating on wi-fi phone does not turn on when the charger is connected the LED. How can it be solved??"
P.S. Hold down the VOLUME, press POWER, wait a bit and let go of POWER = nothing happens
Hi, I have a problem with a P5113. I plugged an audio jack into it to listen to music on some speakers and the tablet instantly shut off and would not power back on. I have tried the vol+ and power, vol- and power, and power while touching the screen methods and nothing works. I aslo opened it up and disconnected the battery for hours and tried to boot (with and without battery connected) with no dice. The only sign of life is when I first press the power button, the screen backlight flashes for a split second. Also, when I plugged it into my computer via USB cord without battery attached, the backlight kept flickering at an interval while my computer kept trying to install it, like it was repeatedly trying to power up, but couldn't. I tested the fuse near the battery socket on the motherboard and it's good. Short of completely replacing the motherboard, I was wondering if anyone has a solution or suggestion that I haven't tried yet. I'm thinking a shorted capacitor, but my skills with identifying and testing SMD's is lacking. My main concern is the files that are stored on the memory of the motherboard since a replacement only costs $50. Any help would be greatly appreciated and any additional information will be gladly provided. Thank you.
I recently purchased the Nexus 5 which has been a blessing up until now when it decided to shut off the screen and freeze or turn off without a way to power up again (there's no way to tell which).
I've tried everything I can think of to reboot the device including:
•Holding the power button
•Holding power button+volume up
•Holding power button+volume down
•Holding power button and both volume keys
•The above while connected to the charger
•Letting it charge for a\an minute\hour\multiple hours then repeating the above steps
Here's all the info I have:
•The phone was in a normal state being used as it usually would before the incident
•The battery level was around 80%
•Right before the incident the speaker used to play back music, video, and apparently allows you to use your voice to input text stopped working.
•Right after the incident the temperature began to rise exponentially (as if the phone was still on but frozen) before cooling and heating again randomly.
Again anyone's input or advice\help will be greatly appreciated! Thank you for your time and of course any suggestions will do so don't be shy.
XGrinder911 said:
I recently purchased the Nexus 5 which has been a blessing up until now when it decided to shut off the screen and freeze or turn off without a way to power up again (there's no way to tell which).
I've tried everything I can think of to reboot the device including:
•Holding the power button
•Holding power button+volume up
•Holding power button+volume down
•Holding power button and both volume keys
•The above while connected to the charger
•Letting it charge for a\an minute\hour\multiple hours then repeating the above steps
Here's all the info I have:
•The phone was in a normal state being used as it usually would before the incident
•The battery level was around 80%
•Right before the incident the speaker used to play back music, video, and apparently allows you to use your voice to input text stopped working.
•Right after the incident the temperature began to rise exponentially (as if the phone was still on but frozen) before cooling and heating again randomly.
Again anyone's input or advice\help will be greatly appreciated! Thank you for your time and of course any suggestions will do so don't be shy.
Click to expand...
Click to collapse
Yikes. I'd RMA. Sounds like you got a faulty one.
Sent from my Nexus 5 using xda app-developers app
Unfortunately because Google requires another $350 authorization hold before they send a replacement I can not RMA at the moment.
If no button combination turns it on for you, even with the charger...
I think your next best bets are to:
A: Let it DIE overnight.
or B: Let it charge overnight and come to it when you wake up.
If that doesn't work, maybe give Google a good ol' ring?
Those last few words before death on your phone are kind of troubling sounding. Maybe something when haywire?
Was it a Stock Nexus 5?
All of the button combinations did manage to finally turn off the device. So no letting the battery die anytime soon.
It was a stock rooted android 4.4 KitKat.
So, I need to know which Kernel or app or anything I need to take my Galaxy Tab 2 7.0 - STOCK - but rooted and make the knock knock feature work like the LG phones have. Installing this in the dash and since there is no front button, turning this on my be a pain in the rear...
Actually, I may have answered my own problem... I am installing this tablet in a custom mount and using it for my car as the main source of audio/video/nav. Since there is no home button, I originally wanted the knock knock wake function, but in researching this it seems that it works on certain kernels (that are not compatible with this device) and it also drains the heck out of the battery... So let me run this by everyone who may have input and see if it makes sense. To me, it does, but I may be underthinking the solution...
The OTG connector will be home to a hub that has one input (for power) and two outputs (for expansion). I am going to have the USB power input hooked up to the USB power in my center console, which only has power when ignition is ON. So, my thought is this. The tablet will not have power when ignition is off, but when you key on the USB will have power and thus will charge the tablet. On charge, it should WAKE, yes? The dev option for STAY AWAKE will be used to, when charging, always stay on... then the 1 minute time out option will turn the screen off shortly after ignition is off.
Make sense? Should work?
Hi all,
have heard a lot of case about misplaced ACC and CONT cable which makes the battery drain out.
My unit is not installed by myself, may I know how what can be the behaviour of misplaced ACC and CONT cable?
For now, I can see the unit can go sleep (i think it's slept) after turn off the car. And while the car is OFF, no matter what button and how long i press on those buttons the unit wont turn on itself.
HI there.
Then you unit is correctly installed. The ignition position ACC means Acessory Only, in other words it allows operation of electrical accessories with the engine off. When you switch to Off or take your key out of the ignition the radio must be killed because power is cut.
CONT is when electricity is always provided even if the ignition is switched off, example: the car alarm or the interior light. Then you radio would be in sleep mode all the time and the battery would be drained (and yes, you would be able to power on the radio even if the ignition was off).
Regards.