yashsingh1/xdaforums huggingface dataset:
[Barnes & Noble Nook Tablet] timpilcher:
I've experienced *insane* battery drain - on the order of 12% an hour when sitting idle.

I'm gonna poke around and see if I can mess with settings, etc. But my habit is to do a super clean flash each time I change a ROM, so there shouldn't be any leftovers. And I've never seen drain like this.

The ROM *has* been really stable, though, so I hope I can track this down.
[Barnes & Noble Nook Tablet] rete:
Install CpuSpy. Bet you will see that the tablet is not entering deep sleep. A simple reboot (i.e. power button, choose reboot) should have your NT entering deep sleep when the screen shuts off. But... you will probably see the odd SoD and black screen shut down when you have deep sleep.

Mine never deep sleeps if I power it up from off (and to restart...power off then power on rather than reboot) and it runs without missing a beat, but the battery drains quick as it sleeps at 300mhz.
[Barnes & Noble Nook Tablet] Demetris:
Download again :)

Sorry... this time will work.
[Barnes & Noble Nook Tablet] timpilcher:
Just for fun, I clean flashed the 09/24 build, and didn't add anything to it (not even gapps) and just played with setting the date, activating WiFi, using stock browser, etc.

After about 45 min it went SOD.

I didn't run it long enough to see about battery life.

So thoughts: could part of the problem be a 'semi-stock' application (like Apollo) erratically scanning for media, and since there is the oddity with the default mounting of the SD card, it sometimes flakes out?

I also routinely run with a lot of stock apps frozen - - phone, dialer, sms, etc. . . because, hey, I'm not using VOIP or anything phone-related. This doesn't seem to have any impact other than perhaps making the battery last a bit longer.

It always seems I can get either good battery life OR reduce SOD down to about zero by altering the settings for CPU governor, ram disk, # of apps allowed to run at any one time, etc. But no combination I've found seems to allow for both minimal SODs *and* good battery life. It's either really stable and the battery drains rapidly, or the battery life is good but I get lots of reboots and SODs.

Undervolting issue??

All shots in the dark, really, just thinking out loud, but maybe it will give an idea to somebody smarter than me ...

BTW - - I hope none of the above is taken as criticism of any of the work of any of the devs - - you guys rock, and do stuff I couldn't do in a million years. I just hope that sometime one of us users will observe something that leads to an "ah-ha!!" moment that helps the devs kill this SOD thing for good.
[Barnes & Noble Nook Tablet] Demetris:
Being there... dont worry this is normal healthy thinking.

Thanks for your time.
[Barnes & Noble Nook Tablet] raywaldo:
With the g-tablet we could just edit the vold file. Does that work for the nt?
[Barnes & Noble Nook Tablet] wellersl:
Well crap. That's what I was going to do when I get home.

I Googled the term "CM10 battery drain" and it does seem to be a rampant problem across multiple devices. I don't envy the devs that are trying to track this down, but I'm definitely waving my pom-poms! :fingers-crossed: Media scanner gets mentioned most.

It's really strange that some folks experience BSODs while others do not. Wouldn't it be nice to determine a common denominator in all this? Wakelock gets implicated more than anything..
[Barnes & Noble Nook Tablet] raywaldo:
I have gapps loaded and a few additional apps besides the ones in the rom. I do experience a FEW bsod problems but not many. Of course since I got the Nexus 7, the nt8 does not have such a heavy workload. :angel:

But I did not change any of the settings that you mentioned.

I personally feel that using twrp serves fewer problems later. I worked with Eyeballer to find that it was the first reliable way to get the 3.0 kernel on the nt8. I have not stopped using it.

See my install process here: http://raywaldo.com/2012/09/root-for-nook-tablet-1-4-3/
[Barnes & Noble Nook Tablet] Demetris:
This is what am trying to see. I think android works the same and i see no reason not to.
[Barnes & Noble Nook Tablet] lkwjason:
Yes, It works, thank you so much!! :victory:
[Barnes & Noble Nook Tablet] billy8362:
One blank screen after four hrs of use awesome. One question I do have is how do you turn off the annoying clicking on the key board.
[Barnes & Noble Nook Tablet] kamui957:
Ran the whole day, clean flash, no SOD on the 9/24 build. Downloading the 9/27. This tablet survived a full day of Netflix, random children's games, and just being toyed around with by me and my 3 year old and not once did I get an SOD. Did have to charge it twice though.

I DID have force closes of the launcher every few times I tried to access it. Other than that, my NT16 installed apps fine, ran them mostly fine and read the 32gb microsd just fine, even playing several episodes of a TV show off SD card without hiccup.

My one problem, which is just a CM10 issue across the board for me on everything but my N7, is Battery Drain. Hopefully with a backup of my settings and an update things will be better. I did note though that I had the easiest time of the install process not by installing CWM or TWRP (which, for some odd reason, couldn't make a simple backup or wipe anything) but by running a recovery from a bootable SD card and dropping the install files for the rom on the root of the SD card.
[Barnes & Noble Nook Tablet] gunnroseclose:
is the build on 27/9 included kernel 3.0.21 with HD video fix and USB OTG enable?
[Barnes & Noble Nook Tablet] Demetris:
kernel 3.0.31

HD video works just fine, if you want browser videos install manually flash player.

USB OTG I dont have one and either anyone reported anything about it, if its working or not.
[Barnes & Noble Nook Tablet] gunnroseclose:
I think i can test it. As i understand, now i need to buy a convertible cable from microusb to usb and then connect the cable to the USB 3G or keyboard... Is that right? after that, how can i know this function work, mate?
[Barnes & Noble Nook Tablet] Demetris:
You will need OTG cable like Galaxy S2/S3 one etc

Keyboard/mouse etc try type something in browser ex.g.
[Barnes & Noble Nook Tablet] gunnroseclose:
ok i will get 1 cable and report as soon as possible :D:D

Cheers
[Barnes & Noble Nook Tablet] raywaldo:
OTG

See my article for info on a CHEAP cable and more info about OTG: http://raywaldo.com/2012/08/otg-usb-host-function-on-the-nexus-7/

I tried on the 9/14 release and it did NOT work. I will flash the new version and report back later today.

Update on my previous post about the battery on the 9/14 build: Now at 45 hours and the battery is at 56%. Down 14% in 24 hours.

Update with the 9/27 version... OTG does not work

however the voice function is working for about 20 seconds at a time.

this is being typed using voice.
[Barnes & Noble Nook Tablet] Keithn:
I remember also playing with USB host using an otg cable with no luck, powered it a couple different ways, tried it unpowered, and even made sure the data pins weren't swapped around and still no luck. That was on an earlier build of the 3.0+ kernel, but I don't think anything related to that was fixed/ made to work.
[Barnes & Noble Nook Tablet] gunnroseclose:
+1, i tried but no luck with 27/9 build. I attached my keyboard to the OTG but nothing happened. Can we do anything?
[Barnes & Noble Nook Tablet] wellersl:
"I'll be back."

What was it doing in those 24 hours? If it was just idling in standby, I don't think CM7 would lose more than 1%.

I followed your instructions and reinstalled the 27/9 build. Without installing anything, I just set the tablet aside and let it go to sleep.In less than half an hour it went from a full charge to 84%!

Back to CM7 until the next release...
[Barnes & Noble Nook Tablet] Demetris:
Do a full charge/discharge circle.

But battery will not be as good as it is on cm7 until reboot bug is found and fixed.
[Barnes & Noble Nook Tablet] Demetris:
Maybe this:

https://github.com/KFire-Android/kernel_omap/commit/b13b7cb368c4737a9e2961a5a940f39b27fc7225

and this:

https://github.com/KFire-Android/kernel_omap/commit/53ca7f3896399a1e8f3b81761df0d42b93012199

But someone must confirm :)
[Barnes & Noble Nook Tablet] wellersl:
I'll try that. What's the preferred method for doing a full discharge? If there isn't one, I'll just start up a movie and let it run until the tablet dies.

Update #1: Battery is fully discharged and, "Too low to turn on."
[Barnes & Noble Nook Tablet] gunnroseclose:
thank you but i have no knowledge about development so i only can test it for you :D:D
[Barnes & Noble Nook Tablet] Demetris:
LOL i was referring to Kuzma/Chris/Rebellos.
[Barnes & Noble Nook Tablet] gunnroseclose:
I have battery drain, NT idle and drain from 97% to 50% for 6 hours of sleep :D:D
[Barnes & Noble Nook Tablet] billy8362:
I had same problem change from on demand to hot plug in proformence settings. Then reboot. Be sure and turn off WiFi when not using that seems to help also. And kill all apps when not in use.
[Barnes & Noble Nook Tablet] gunnroseclose:
tks mate, that's useful but i had a weird bug. Sometimes the settings change to default automaticly although i had change some things according to my demands. And then after a while, it's come backs as my my changes before, really weird :D:D

BTW, about OTG, anyone has ideas?
[Barnes & Noble Nook Tablet] raywaldo:
Battery Discharge on 9/27

After I put the 9/27 on, I rebooted, charged it full, disconnected, tap power button to turn off the display and left it. That was less than 24hrs ago and now it is totally discharged.:crying: - I did not use it at all.

After it charges, I will return to the 9/14 and see if it goes back to the good battery life.
[Barnes & Noble Nook Tablet] old_fart:
.

This is a 'good' example of time duration where there is 'no' deep sleep, but rather only idle mode/off. . It is exactly what they said it would be . . a trade off. . I'm very excited the devs have a new troubleshooting tool. . My fingers ( and toes ) are crossed !
[Barnes & Noble Nook Tablet] powermatt:
Yeah, I'm still experiencing the battery drain bug as of the 9/27 version as well. Android system is always at the top of the battery usage stats. Everything else seems to be working pretty well.
[Barnes & Noble Nook Tablet] Demetris:
This is only for developing reference so i have my findings online for all to see :)

After some research(again :( )

max17042

MAX8903

Charger Controller	MAX8903C Switch mode Charge Li-Polymer battery with smart power path control from MAXIM

1.Fuel gauge	MAX17040 battery energy gauge

2.Fuel gauge	MAX17047 battery energy gauge from MAXIM

1+2 driver seems to be the same.

MAX8903 charger controller operates the usb also dual (AC adapter and USB) power inputs.

http://www.maximintegrated.com/datasheet/index.mvp/id/6019/t/al

Fuel Gauge MAX17047

http://www.maximintegrated.com/datasheet/index.mvp/id/7181/t/al

I have found for both drivers :)

Reference:

http://www.hardkernel.com/renewal_2011/products/prdt_info.php?g_code=G133888637376&tab_idx=2#

http://www.hardkernel.com/renewal_2011/products/prdt_info.php?g_code=G129705660781&tab_idx=3#

Also Max17042 Fuel Gauge chip is used into Galaxy S2 (SII) so we can get their driver also for Jelly bean etc.

Driver/source code here ;)

http://com.odroid.com/sigong/nf_file_board/nfile_board_view.php?keyword=&bid=85#

http://com.odroid.com/sigong/nf_file_board/nfile_board_view.php?keyword=&tag=ODROID-Q&bid=112#

All Others:

http://com.odroid.com/sigong/nf_file_board/nfile_board.php#
[Barnes & Noble Nook Tablet] gunnroseclose:
with 27/9 build and after changing from On Demand to Hotplug, NT just drain 5% for 7,5 hours of idle :D:D Better battery life now :D:D
[Barnes & Noble Nook Tablet] ShinnAsuka:
is it safe to delete the trebuchet launcher apk if you already have another replacement launcher like nova or apex installed already? or should I just leave it alone? trying to maximize my memory for the NT right now...
[Barnes & Noble Nook Tablet] rete:
Yes, you can. I always delete Trebuchet and replace with Nova as a system app.
[Barnes & Noble Nook Tablet] klanphea:
battery life on nook tablet 8gb

So if I change to that mode from on demand, and I turn my nook off then turn it back on..does it stay as is? Or does it revert back to default (on demand)?

I just don't want to keep changing the mode everytime I turn off/on the nook....
[Barnes & Noble Nook Tablet] ShinnAsuka:
on the same screen where you set the governor, there is also an option called set on boot, make sure its checked/filled in and it will stay on hotplug from then on.

anyone notice that once its on hotplug the current cpu frequency stays at 1200 mhz?
[Barnes & Noble Nook Tablet] Lacokako:
Theres an option to keep the change on boot.
[Barnes & Noble Nook Tablet] gunnroseclose:
you change to hotplug then tick into the last option: set on boot. After that you reboot your tab, using your tab until it remain about 10% battery then reboot it to recovery mode and do a battery wipe. Finally, plug your charger and wait until it got fully charge. That's how i do exactly :D:D
[Barnes & Noble Nook Tablet] ShinnAsuka:
by battery wipe you mean wipe battery stats under advanced in cwm?
[Barnes & Noble Nook Tablet] gunnroseclose:
yes, exactly. That will refresh your battery and force them to count battery gauge freshly. That's why you need to drain your baterry until it remain about 5-10% :D:D
[Barnes & Noble Nook Tablet] raywaldo:
Battery Stats

Google has stated that wiping battery stats does nothing to improve the battery life.

http://www.androidcentral.com/wiping-battery-stats-doesnt-improve-battery-life-says-google-engineer
[Barnes & Noble Nook Tablet] klanphea:
Ray.... 24/09 UPDATE CM10 Nook Tablet 8GB Battery DRAINING

Hey man, agian I have some questions...everything works well for me with the 24/09 release...(i tried 27/09 release and too much draining of battery, freezes, BSOD, etc.) so I went back to 24/09 RELEASE...ANYWAYS....

Since I am using 24/09...I have it set to default @ 300mhz min. 1200 max. On Demand Mode for performance...is this the best setup ? I notice it drains about 10-12%/hr....any HELP OR IDEAS???... I just press the power button to "turn of screen" idk if it goes to sleep or what...or if i can make it go to sleep...or try a different performance mode or what...

Thanks!
[Barnes & Noble Nook Tablet] slgooding:
I recommend using hotplug. I have had good success and it has power optimizations for dual cores. I'm not sure if ondemand does. You can verify of your device is asleep by installing cpuspy from the market.
[Barnes & Noble Nook Tablet] klanphea:
Okay thanks....Remember I am using 24/09 RELEASE ...NOT 27/09....

I have noticed it doing the black screen of death occasionally when I choose HOTPLUG (do I choose a minimum speed? leave as is?)....is that odd or normal for BSOD??

Explain what I do when i install CPUSPY?
[Barnes & Noble Nook Tablet] sailerph:
I've noticed Hotplug makes my device run quite warm around the bottom
[Barnes & Noble Nook Tablet] raywaldo:
Battery Discharge

I have been busy and still have not re-loaded 9/14 (or 9/24).

As I said in the original posting, I did not change ANY of the default values and it clearly went into deep sleep. The battery charge stayed good for at least a day or two and I had very few BSOD and no random reboots or SODs. :cool:

When I have time to flash and test it some more, I will post back here.
[Barnes & Noble Nook Tablet] klanphea:
Deep SLEEP

Thanks it verified that My NOOK TABLET 8gb

DOES

go to deep sleep mode...but I want to know when does it turn to deep sleep mode after i turn off the screen?....or can you edit/change when it does/doesnt...etc...?
[Barnes & Noble Nook Tablet] aakong:
Updated to CM10-20122709. On cyanoboot screen, in upper left corner I get the battery charger state and the line "charging disabled"

Consequently nook does not charge when ON and plugged in. Will only charge if powered-off and plugged in.

How can this be resolved?

....... Thanks

---------- Post added at 05:08 PM ---------- Previous post was at 04:47 PM ----------

Running OTA-updater to update to rom: SGT7 for Nook Tablet (version. 1347586866). Getting MD5 error on download. Multiple attempts /( rebooted/ enable/disable wifi)
[Barnes & Noble Nook Tablet] raywaldo:
charging issues

Just disregard that note. It is charging when the "n" on the OEM cable is lit. It will turn green when it is fully charged.

The Nook will NOT charge when it is powered off entirely. It requires the CPU to control the charging.

If you have charging issues, you need to be certain to use the OEM Charger & Cable. All alternative chargers & cables charge at a slower rate.
[Barnes & Noble Nook Tablet] aakong:
I am using the OEM charger and cable. If I am using the tablet with the charger plugged in ; I get the lightning bolt in the battery indicator and the n is lit green ,yet the numeric charge indicator counts down until it finally shuts off @~ 9%. Any additional thoughts?
[Barnes & Noble Nook Tablet] billy8362:
I have had this same issue also. I found that I have to turn off the nook and then plug the charger and let the nook reboot then the light will turn yellow and be charging.
[Barnes & Noble Nook Tablet] LifeWOutMilk:
I noticed tonight on 27/09 that my nook would not charge (green N) while in deep sleep with HOTPLUG enabled. I woke up the tablet and it started charging. I do have a Set CPU profile enabled that automatically switches to ONDEMAND when the screen is on so I'll have to see if the same happens with HOTPLUG while awake.

Edit: After posting the message, I found that this time when I plugged in the charger, the screen woke up and it started charging as expected. Perhaps it was a fluke, no idea.
[Barnes & Noble Nook Tablet] Demetris:
New Rom up guys, 02/10.
[Barnes & Noble Nook Tablet] feladenfia:
it seems that the wifi is having some trouble. Lots of drop down. Hardly download anything.

Please fix this. Love this rom :D

Nah. Its just my modem problem. Got it fixed. Nice rom :D
[Barnes & Noble Nook Tablet] klanphea:
any issues?

What has been changed/ modified/ and issues yet?
[Barnes & Noble Nook Tablet] miniblue:
10/2 ran well with better wifi than the previous. Didn't shutdown, but also per Cpu Spy didn't deep sleep. Battery drain with display off was less than 2% in about an hour. The system felt sluggish compared to CM7 and Root Explorer crashed trying to open a CWM backup directory.

Corporate Email set up fine and Go Launcher and all apps worked from Titanium batch backup.

I'm back on CM7 now, but I made a backup and will probably play with it some more tomorrow.

Bill
[Barnes & Noble Nook Tablet] :
I'm having trouble getting GAPPS to work on pretty much any of these builds... They worked fine on the "Linaro CM10 SGT7 Port For Nook Tablet' rom by NookTabletsPower. Any ideas?

I wiped cache, data/factory reset, wiped dalvik. Then Installed the rom (10/02 and 09/27... one after the other when I had no gapps... not at the same time.) then flashed gapps. No play store or anything else. IF I grab the play store apk and install it, it immediately closes.

16gb model.
[Barnes & Noble Nook Tablet] Demetris:
Just try the ones posted in OP if they dont work update your recovery and retry.
[Barnes & Noble Nook Tablet] RhinoNelson:
OTA Updater update

I still have issues at some point with this app. At some point it (OTA Updater) will suddenly stop working and after that the Play Store closes immediately when I try and open it. Clearing Cache a d Play Store data doesn't help. I open the zip from Windows and just delete the OTA Updater .apk and installing without it without issue. I haven't seen others with this same issue so it is unique to my installation. Other than the documented battery drain I have great success with it and continue to use it daily.
[Barnes & Noble Nook Tablet] :
Just tried a few more times.

Only way I could get this rom to work was to restore an old GB backup... Wipe cache and dalvik (not factory) then install the rom and the GAPPS. At Least I got it going though.
[Barnes & Noble Nook Tablet] patterone:
recent rom runs great........no crashes....but no deep sleep....arrrggghhh
[Barnes & Noble Nook Tablet] Demetris:
Thanks. Cpu_idle=1 is enabled that's why it never sleeps.
[Barnes & Noble Nook Tablet] thatdude90210:
Deep sleep seems to be working in the lastest ROM. Battery was at 79% last night, and is still at 79% this morning. CPU spy says 14 hrs on deep sleep. 14 mins at 300 Mhz and ~2 mins at 1200 Mhz (I didn't use it much, and governor on "hotplug").
[Barnes & Noble Nook Tablet] Demetris:
L&G

Chris made a breakthrough! 2TU

He Used cpuidle44xx.c from i9100G Galaxy S2 Omap4 derivative ingenious move, no more cpu_idle=1 and hopefully no more battery problems.

Wait for new rom to test soon and be happy we have such superficially skillful and mentally bright developers to our family!

Regards
[Barnes & Noble Nook Tablet] digixmax:
I think you meant "superbly".

From the english Wiktionary:

Adjective

superficial (comparative more superficial, superlative most superficial)

1. Shallow, lacking substance.​
[Barnes & Noble Nook Tablet] Demetris:
No i didn't :)

http://en.wiktionary.org/wiki/clever

Go to Translations section:

Its there, superficially skillful ;)

And next time go Q&A this is development section, thanks.
[Barnes & Noble Nook Tablet] patterone:
how can this be

are you really on the latest rom??
[Barnes & Noble Nook Tablet] thatdude90210:
Build date Oct 2.

I only installed the ROM and basically have not used it. The only app I used was ES file explorer and a screen off app. The ROMs before this one, I had to turn it off instead of letting it sleep, otherwise it would be totally drained in a day.
[Barnes & Noble Nook Tablet] patterone:
Thanks.

i am very confused... the dev just said "Cpu_idle=1 is enabled that's why it never sleeps." about the 10/2 rom
[Barnes & Noble Nook Tablet] chrmhoffmann:
You shouldn't set expectations too high.

Chris
[Barnes & Noble Nook Tablet] Demetris:
New Rom with Chris's changes up for testing.
[Barnes & Noble Nook Tablet] Mechapanda:
Omg, you also fixed the WiFi problem too, that makes me a happy camper

Sent from Outer Space
[Barnes & Noble Nook Tablet] Demetris:
Go try my enchancement pack :)
[Barnes & Noble Nook Tablet] frodo9999:
Best battery

In the las build the battery appear to be much better. CPU Spy shows that the device go to Deep Sleep. 2 hour listening podcast and the battery goes of 52% to 47%.

The best build for me.

Thanks for you awesome work.
[Barnes & Noble Nook Tablet] slgooding:
When posting feedback on the latest build, please provide information regarding use (installed, or not) of the "NT Enhancement Pack" provided in the OP.

Thanks!
[Barnes & Noble Nook Tablet] frodo9999:
Hi,

Clean install of the last build (04/10) without the NT Enhancement Pack. Only the Gapps installed, Beyonpod app and CPU Spy app.

Regards.
[Barnes & Noble Nook Tablet] patterone:
WOW!!! 4/10........... no crashes, deep sleep, good quadrant scores and Firefox finally works!!

great job!

spoke too soon........random crashes now :(
[Barnes & Noble Nook Tablet] joedalton_tpu:
Anybody can post some screenshots? Look awesome, hope it will be updated frequently. I'm using CM7 internal, and will move to CM10 shortly ;)
[Barnes & Noble Nook Tablet] Mechapanda:
Lol screenshots? The only thing that we would be showing off is the about phone screen, or possibly the holo UI. It's no difference from other phones :P

Sent from Outer Space