Boot on power - G Pad 8.3 Q&A, Help & Troubleshooting

Been searching for hours on this issue. It's easy to make the Nexus 7 boot on power with a simple fastboot command. Does anyone know anyway to make this happen with this tablet? I am planning on using it as a gauge cluster in my car and would prefer not to have to go back to my nexus 7. The screen size is amazing. If there was anyone with any ideas, that would be helpful. I have tried searching for where the plug in screen was held, but I haven't found anything yet. I was thinking about just replacing loading that screen, with rebooting the device. Maybe something like that would work.
Let me know if you guys have any ideas please! Getting kind of desperate here. Thanks!

112 views and no suggestions! Ha, anyone have any ideas?

deadaim00 said:
112 views and no suggestions! Ha, anyone have any ideas?
Click to expand...
Click to collapse
So, what you want is for your tablet to come on when the car is started, and off when off?

sleekmason said:
So, what you want is for your tablet to come on when the car is started, and off when off?
Click to expand...
Click to collapse
Yep! I've already got the off part taken care of, just need the on!

deadaim00 said:
Yep! I've already got the off part taken care of, just need the on!
Click to expand...
Click to collapse
Only thing I can think of is to allow your tablet to stay in suspend, even force it with power off,
then use tasker to create a script to wake from suspend when plugged in!

sleekmason said:
Only thing I can think of is to allow your tablet to stay in suspend, even force it with power off,
then use tasker to create a script to wake from suspend when plugged in!
Click to expand...
Click to collapse
That's how I currently have it setup. The problem is if it were to ever run out of battery and shut off, I'd have to take my "cluster" out to be able to turn it back on when it's plugged in and charged.

deadaim00 said:
That's how I currently have it setup. The problem is if it were to ever run out of battery and shut off, I'd have to take my "cluster" out to be able to turn it back on when it's plugged in and charged.
Click to expand...
Click to collapse
Run a loop with a breaker in it for power and use a dedicated power source with a switch?

sleekmason said:
Run a loop with a breaker in it for power and use a dedicated power source with a switch?
Click to expand...
Click to collapse
As I do appreciate the ideas, I have already thought about all of these. However I would like it to operate exactly how I had my previous tablet, except with this specific piece of hardware. If it's not possible it's not possible, or I'll just keep looking. Thanks though!

Now that the source has been released and there is a recovery and such, anyone have any other ideas on this? It would really be helping me out! Thanks guys!

Related

Fastboot

I am 99.99999% sure i know the answer to this question, but i figure ill ask anyways....
Is there a way to get into fastboot without the power button?
Recently my power button crapped out on me. I got a new replacement phone, but i wanted to pull files off my old phone...
any help would be appreciated, thanks!
EDIT:
Again, 99.99% sure i know this answer too... but is there a way to sent a power up signal via USB when the phone is off?
does your phone turn on?
if so and you have adb setup, you can use: adb reboot bootloader
Zepius said:
does your phone turn on?
if so and you have adb setup, you can use: adb reboot bootloader
Click to expand...
Click to collapse
Nope, doesnt turn on... When im plugged in via USB either to a computer or a power outlet, i get the battery charging icon, but thats it...
before it broke, the power button was working spotty... then the next morning it was not working at all
codya321 said:
Nope, doesnt turn on... When im plugged in via USB either to a computer or a power outlet, i get the battery charging icon, but thats it...
before it broke, the power button was working spotty... then the next morning it was not working at all
Click to expand...
Click to collapse
then yeah i'm pretty sure you're SOL if it doesnt turn on.
Zepius said:
then yeah i'm pretty sure you're SOL if it doesnt turn on.
Click to expand...
Click to collapse
thats what i was 99.9999% sure of... haha, bummer
you can remove the housing and short the power button contacts
codya321 said:
thats what i was 99.9999% sure of... haha, bummer
Click to expand...
Click to collapse
I have no idea if this works but worth a shot...
cohrs said:
take the battery out and plug into usb (connected to computer). put the battery back in and when you see the battery charging on the screen remove the battery again. On mine the battery image starts flickering. at that point i put the battery back in and it rebooted.
This has worked for me a few times. Once rebooted you will be able to see your device using adb and then fastboot.
i got the idea from this post but found the timing i used worked better than his random attempts while holding the x key on the nexus one.
http://forum.xda-developers.com/showthread.php?t=1524858
good luck
Click to expand...
Click to collapse
3rdstring said:
I have no idea if this works but worth a shot...
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Click to collapse
Yea, i have been trying that over and over with no luck, no dice though...
anyone have any other ideas? i would really like to get some data of the phone before i get rid of it...
codya321 said:
Yea, i have been trying that over and over with no luck, no dice though...
anyone have any other ideas? i would really like to get some data of the phone before i get rid of it...
Click to expand...
Click to collapse
If you're really desperate for the data, you could always open the phone up and manually trigger the button as someone above has posted. There probably is another way via hardware tools e.g. JTAG or something OMAP/flash related but I'm not aware of anything specific.
Get ROM toolbox and make a shortcut for rebooting and getting into recovery
Sent from my Galaxy Nexus using Tapatalk 2
ac3theone said:
Get ROM toolbox and make a shortcut for rebooting and getting into recovery
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
??
The OP said he can't turn his phone on...

[Q] How to prevent LCD from turning on everytime I charge??

How do I prevent the screen from turning on everytime I plug it into the charger, remove it, or it gets to 100%?
I plug it in all the time and I always have to turn the screen off or suffer the wrath of screen timeout. When I unplug to place it in my pocket, again, I must turn the screen off, WHY? The s3 comes with an LED indicator for a reason, so we don't have to have the screen on. WHO IS THIS FOR EXACTLY?!?!
I know this isn't the end of the world but it's annoying as hell! - I can't be the only one can I?
Plug it in.. press lock... it's one button press man.
Wrath of Screen Timeout? Explain?
psykhotic said:
Plug it in.. press lock... it's one button press man.
Click to expand...
Click to collapse
Technically it's several presses a day. This is a legitimate question that I think a lot of people would at least be interested in. I know a lot of people have learned to live with it by now but we should have the option by now. I mean come on, is this Android or isn't it?
SiNJiN76 said:
Wrath of Screen Timeout? Explain?
Click to expand...
Click to collapse
Just a spicy way of saying wait for the screen to turn off by itself. Any ideas?
lordazoroth said:
Technically it's several presses a day. This is a legitimate question that I think a lot of people would at least be interested in. I know a lot of people have learned to live with it by now but we should have the option by now. I mean come on, is this Android or isn't it?
Just a spicy way of saying wait for the screen to turn off by itself. Any ideas?
Click to expand...
Click to collapse
I agree with you. Its really annoying. Ive been able to disable the screen turning on when unplug but havent been able to get it to stay off when plugging in. BTW this is on CM10.
How often do you charge your phone that you're pressing the button several times a day? I plug it in at night, ok good my alarms on, press off. Unplug it in the morning, oh new emails, unlock, etc, press off.
I don't think anyone has coded it out yet because it's not very noticeable. I spent some time searching but couldn't find anything, complaints or otherwise. Maybe try posting in a custom ROM and seeing if any of those guys have ideas? Anyways, free bump..
Screen Blanks off when charging/laid down
Just a spicy way of saying wait for the screen to turn off by itself. Any ideas?
Go to the market and D/L Screebl (Screen Blank)
I set it for min and after 4 secs the screen blanks off. If I have the phone in a using/upright position, It will not go off...
Very Simple and useful app. The portrait and landscape settings are user adjustable. Try it. You'll like it!
Awesome suggestions guys, thank you so much! I'll be in Ohio for a few days but when I get back I'll try some of these out, Thx again.
Sent from my SGH-T999
lordazoroth said:
Awesome suggestions guys, thank you so much! I'll be in Ohio for a few days but when I get back I'll try some of these out, Thx again.
Sent from my SGH-T999
Click to expand...
Click to collapse
I'll be testing some ideas I have. It might be hidden in the services.jar or framework.jar.
Sent from my SGH-T999 using Tapatalk 2
Thanks, I'd appreciate any info you can come up with.
Sent from my SGH-T999
lordazoroth said:
Thanks, I'd appreciate any info you can come up with.
Sent from my SGH-T999
Click to expand...
Click to collapse
It's a lot to check. There are three .jar files I have decompiled. And there are hundreds of files that I have to go through.
Sent from my SGH-T999 using Tapatalk 2
Just a thought, what about using the proximity sensor to keep the screen off? I leave my phone screen down when it's charging and when you unplug it it's most likely going in your pocket right?
psykhotic said:
Just a thought, what about using the proximity sensor to keep the screen off? I leave my phone screen down when it's charging and when you unplug it it's most likely going in your pocket right?
Click to expand...
Click to collapse
It still turns on. :\ it's like a wake lock. However it does shut off right away if the sensor is covered
Sent from my SGH-T999 using Tapatalk 2

AT&T S3 keepsing turning ON and OFF every 20 Seconds

Hey Guys,
I have a S3 AT&T and it just keeps turning on and off by its self about every 20 seconds. I have looked around and many people have this issue and there are a few solution out there but all of those solutions need my phone to stay on for a while. I can't do a hard reset and I can't do any kind of flash because it stays on for such a short time. Also the phone does not have water damage.
Below are the steps I have tried so far.
-Tried a new battery but same issue
-Thought maybe the power button was stuck but it looks fine.
-Tried to do hard reset and flash but does not stay on long enough
Not sure what else to do. Its killing me that I cant figure out how to fix it!! THERE MUST BE A WAY!
Thanks everyone!
PhoneHutSJ said:
Hey Guys,
I have a S3 AT&T and it just keeps turning on and off by its self about every 20 seconds. I have looked around and many people have this issue and there are a few solution out there but all of those solutions need my phone to stay on for a while. I can't do a hard reset and I can't do any kind of flash because it stays on for such a short time. Also the phone does not have water damage.
Below are the steps I have tried so far.
-Tried a new battery but same issue
-Thought maybe the power button was stuck but it looks fine.
-Tried to do hard reset and flash but does not stay on long enough
Not sure what else to do. Its killing me that I cant figure out how to fix it!! THERE MUST BE A WAY!
Thanks everyone!
Click to expand...
Click to collapse
Does it also happen in download mode and/or recovery?
x0ne215 said:
Does it also happen in download mode and/or recovery?
Click to expand...
Click to collapse
Yes it even in the download and recovery menu it does this.
I'm having this exact same problem. Even in download mode it'll reboot. In fact, even while rebooting it reboots. I was lucky in that it stayed in download mode long enough for me to ODIN back to stock, but it's still rebooting. Completely unusable because it never stays on long enough. Can anyone help?
Did it ever take a dive off the table or your hands?
It wouldn't surprise me if something internally was loose....
x0ne215 said:
Did it ever take a dive off the table or your hands?
It wouldn't surprise me if something internally was loose....
Click to expand...
Click to collapse
For myself, not recently. The phone was in perfect working condition, until I updated my ROM. Then when I woke up this morning, this problem occurred.
---------- Post added at 10:26 PM ---------- Previous post was at 10:22 PM ----------
hbk19 said:
For myself, not recently. The phone was in perfect working condition, until I updated my ROM. Then when I woke up this morning, this problem occurred.
Click to expand...
Click to collapse
Honestly, it seems to me as if the power button is stuck somehow. It doesn't look stuck to me, but the behaviour of the phone is like that. The constant rebooting, the way the screen turns on, and even how the power off menu randomly comes up by itself.
x0ne215 said:
Did it ever take a dive off the table or your hands?
It wouldn't surprise me if something internally was loose....
Click to expand...
Click to collapse
Mine has fallen before but nothing serious I'v dropped phones way worse then this. But I do think something is definitely loose. If I just leave the phone alone it doesn't power on or off. But as soon as I pick it up and move it, it powers on then in 20 seconds just goes off again.
Anyone have any idea what could be loose maybe?
Thanks
PhoneHutSJ said:
Mine has fallen before but nothing serious I'v dropped phones way worse then this. But I do think something is definitely loose. If I just leave the phone alone it doesn't power on or off. But as soon as I pick it up and move it, it powers on then in 20 seconds just goes off again.
Anyone have any idea what could be loose maybe?
Thanks
Click to expand...
Click to collapse
your best bet is too open up the phone and look at the connectors from the batter to the phone and make sure that those have a solid connection.
99% it is a power button failure. I as well as many others are suffering from this.
Try to avoid using the power button as much as possible. Use the home button to power on and find a softkey to turn your screen off. Easiest way is use quick toggles to turn off screen.
Sent from my Galaxy S3 on CM10.1 using XDA App

[Q] Auto start when connect to charger

Hi,
Ive googled about this matter and cant seem to find a solution for the galaxy tab s lte but for other samsung devices since s3 is possible.
Ive also tried the Auto Power On app (paid apps) both of them didnt work and requested a refund.
It seems that we have to modify the file /system/bin/playlpm or /system/bin/lpm or /system/bin/ipod for this to work.
Ive tried everything and still doesnt work on the galaxy tab s lte.
What i need is for the tablet to boot upon connected to charger when the state is off. Now all i can see is the battery icon stating its charging but never boot into android.
Anyone have any idea how to make this work for the galaxy tab s lte?
Cheers.
Well it begs the question as to why in the world would anyone want this?
I wouldn't want my tab on every time I charge it.
I think you would need a custom rom, don't the apps you can download/buy, need your device to be already running so they can shutdown or run an app or change a mode when they detect you plugging in or removing the charger.
John.
ashyx said:
Well it begs the question as to why in the world would anyone want this?
I wouldn't want my tab on every time I charge it.
Click to expand...
Click to collapse
ashyx said:
Well it begs the question as to why in the world would anyone want this?
I wouldn't want my tab on every time I charge it.
Click to expand...
Click to collapse
Why would anyone need this? Let me answer you.
Some of us use our android tablets in cars ... There's app to make the tablet shutdown when u turn off the engine and the power is disconnected (tons of them).
But when u start the engine back and the power is re-connected, the tablet wont turn on. Right now the only solution i can do is to use tasker to airplane mode on the device when the display is off, and airplane mode off when the display turns back on. This saves power so that the tablet doesnt run out of juice overnight in the car.
So most of this has to do with in-car tablet systems that you want it to boot up as you start your engine. I can custom rom my tablet to run CM12 however even CM12 doesnt boot up, some settings needs to be changed and im not sure which part so i need some help on this.
Cheers.
ashyx said:
Well it begs the question as to why in the world would anyone want this?
I wouldn't want my tab on every time I charge it.
Click to expand...
Click to collapse
And btw .... iPhone iOS Behavior is exactly like this ... So no body is begging the question of why anyone would want this ... Just you i guess
arsyan said:
And btw .... iPhone iOS Behavior is exactly like this ...
Click to expand...
Click to collapse
Another reason not to want it then
LOL thats a good one ....
Anyway back to serious matter ... Any one out here can help me with this problem? I think it would help a lot others too that are looking for a solution. a CM12 solution would be great also coz i can flash the tablet with CM12.
Thanks in advance.
arsyan said:
And btw .... iPhone iOS Behavior is exactly like this ... So no body is begging the question of why anyone would want this ... Just you i guess
Click to expand...
Click to collapse
C'mon. You and I both know that this is a niche scenario, and normally it's a bad idea. If your running low enough on battery to run you device dead, you want it to charge a while before turning on. We've all been waiting on a dead phone to get a few percentage points charged so that way it doesn't die immediately upon startup.
I've been leaving my Tab S on a constant power supply in the car. This means I have to turn it on and off manually. I have been toying with using Tasker to turn the screen on/off based on connection with a BT device that would be powered by an switched power source.
The problem I get is warning messages about trying to charge the battery while it is too hot or too cold.
stm8 said:
I've been leaving my Tab S on a constant power supply in the car. This means I have to turn it on and off manually. I have been toying with using Tasker to turn the screen on/off based on connection with a BT device that would be powered by an switched power source.
The problem I get is warning messages about trying to charge the battery while it is too hot or too cold.
Click to expand...
Click to collapse
Why dont u try this app https://play.google.com/store/apps/details?id=com.as.powerchecker it will close the android once ur power is disconnected from the car ...
As for turning it back on when u start. Still no solution ...
Any help guys? Last time asking ...
Using Tasker and Secure Settings, I can get the tablet to turn the screen on and off when the power is connected. If rooted, you could turn Airplane Mode on and off in Tasker also. But short of a change in the firmware, I have no idea how to power off and restart based on external power connection.
From what I remember, when CM12 was still buggy... when you connect a charger when it was powered off, it would show the battery icon and automatically reboot into recovery. Of course that was a bug, so I don't really know.
-DUHA
Same here, did you find an answer?
Same here but no solution found
Iam trying to set my tablet to auto start/boot when charger is connected in mini usb port. I didnot find lpm.sh in root\system\bin folder to modify. But i found ilm file with below script. Plz tell how to modify to make powered off tablet to boot when charger is connected.
Script to start "pm" on the device, which has a very rudimentary
# shell.
#
base=/system
export CLASSPATH=$base/framework/ime.jar
exec app_process $base/bin com.android.commands.ime.Ime "[email protected]"
You can instruct init to reboot the device whenever charger mode is detected. Create a new .rc file or edit any existing one:
# /system/etc/init/off_mode_charge.rc
on charger
setprop sys.powerctl reboot,leaving-off-mode-charging
Source: https://android.stackexchange.com/q...ower-on-android-when-the-charger-is-connected

Screen won't turn off, when connected to power...

Just got my H7x Saturday and am blowin away that a phone this nice can be had for under $200usd.
Anyways, Whenever I have the phone connected to the power-cord(charging) the screen won't turn off. I'll wait for the 60sec I have it set to, fade, the screen turns off, and then right back on immediately. Does the same when connected to USB on a windows computer. Charging only, file transfer etc. does it no matter the mode.
Any input with help would be greatly appreciated... Thank you
edit***All software is up to date via OTA
NeWcS said:
Just got my H7x Saturday and am blowin away that a phone this nice can be had for under $200usd.
Anyways, Whenever I have the phone connected to the power-cord(charging) the screen won't turn off. I'll wait for the 60sec I have it set to, fade, the screen turns off, and then right back on immediately. Does the same when connected to USB on a windows computer. Charging only, file transfer etc. does it no matter the mode.
Any input with help would be greatly appreciated... Thank you
edit***All software is up to date via OTA
Click to expand...
Click to collapse
This setting is normally defaulted to off, but check the development option "stay awake"
No, it's set to off. But good call.
It seems like the screen saver would make it do this too. I just noticed that everytime the screen comes on, it's a different picture. However, settings>display>screen saver is off.
Just figured it out.
Under settings>Apps and notif...>notification and status bar> I had 'notifications turn on screen' turned on. That's what was causing it. Strange...
Can anyone else test for this?
NeWcS said:
Just figured it out.
Under settings>Apps and notif...>notification and status bar> I had 'notifications turn on screen' turned on. That's what was causing it. Strange...
Can anyone else test for this?
Click to expand...
Click to collapse
Most users are on roms right now, I suggest you do he same.
And, no need for other people to test for this, you fixed the problem.
crayonicle said:
Most users are on roms right now, I suggest you do he same.
And, no need for other people to test for this, you fixed the problem.
Click to expand...
Click to collapse
I guess I could root and rom. I am just so impressed with the battery on the stock rom I was going to try and keep it as long as I can.
What ROM do you suggest?
And I didn't fix the issue. Just turned it off... Its still an issue for people who want thier screen to turn on when they get notifacations.
Thanks for the help!
NeWcS said:
I guess I could root and rom. I am just so impressed with the battery on the stock rom I was going to try and keep it as long as I can.
What ROM do you suggest?
And I didn't fix the issue. Just turned it off... Its still an issue for people who want thier screen to turn on when they get notifacations.
Thanks for the help!
Click to expand...
Click to collapse
Openkirin roms are good, but the support chat in telegram is a bit toxic...
Also, any hi6250 rom will work well, like with the p8 lite 2017; roms there work on the honor 7x too, i've tested.

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