yashsingh1/xdaforums huggingface dataset:
[Galaxy Tab 10.1 General] marciozh:
No Deep Sleep

Hi HansiHusten (and other friends) ...

I made all possible tests that were mentioned in this thread.

Nothing makes the tab into Deep Sleep!

I even think that the problem was related to the fact I do not use a Sim card (and get all the time that message in the notifications: No Sim Card). Perhaps the system is all the time testing and trying to access the Sim Card (via modem).

I dismissed this possibility for two reasons:

1 - My first test by placing a Sim Card was satisfactory (Deep Sleep came in for most of the time of testing), but my second test was not satisfactory (at 216 MHz was almost all the time the test.)

2 - Users that use the 3G also report the problem.

It seems that a fault (gross and inexcusable) of Samsung's kernel.

It's a shame a multi-billionaire company released a firmware with a bug that size!

The trick is to wait for CM9 stable (with the cameras running), because Samsung has released the Source Code!

But in the meantime, if anyone has suggestions for further testing, post here!

OBS: It's strange how the Samsung has released these firmware ... Without any marketing and an unofficial fan-site ... No OTA, no Kies, no for all regions...

:eek:
[Galaxy Tab 10.1 General] VouSDru:
Try the custom rom from Ganbarou ICS .. its as good as Overcome but its ICS :victory:

I havent encoutered any problem with battery drain since using this Rom after switching from Overcome 2.2 :D

I am using baseband firmware of XXKL3
[Galaxy Tab 10.1 General] garese:
I think, but mostly hope they will release an update, since the ebook system app is now unavailable and says "coming soon". Hopefully they will fix this too...
[Galaxy Tab 10.1 General] mike2nl:
System App Uninstaller is your friend.
[Galaxy Tab 10.1 General] BretonGirl:
Um, not all of us are having battery issues so chill out and stop with the ranting and raving. My battery life is just fine.

---------- Post added at 09:31 PM ---------- Previous post was at 09:30 PM ----------

The ebook app no longer exists. It's been replaced by Reader's Hub.
[Galaxy Tab 10.1 General] Panos_dm:
Actually there is ebook app on Samsung store..

Sent from my amazing 10.1 galaxy tab :)
[Galaxy Tab 10.1 General] marciozh:
My solution

I'll report to you how I solved my problem.

My tab was never going to Deep Sleep. I tested all the options (airplane mode, google+, samsung push, etc..) And ... nothing! Always remained at 216 mhz all the time.

I put a Sim Card with 3G connection and it's over.

Now, the tab keeps in Deep Sleep all the time of testing (89-95-96%).

The battery does not drain anymore and still more economical than before (using HC 3.2).

My Conclusion: With ICS, the tab can not be without a Sim Card. This causes the system to be testing the connection and trying to run some process related to the 3G modem all the time. It's a fail, but it is.

:laugh:
[Galaxy Tab 10.1 General] mrsbelpit:
Yes, the wifi icon remains gray on my husband's GS3, I think it's by design.
[Galaxy Tab 10.1 General] challenger_P:
I almost came to the same conclusion as yours, but the deep sleep is not consistent at my end.

the only thing different probably I'm doing is the sim card im using is deactivated and don't have data plan on it. does your sim have a data plan?

Any way to disable 3g on this tablet?

Thanks
[Galaxy Tab 10.1 General] Faiithless:
Solved

I had solved this problem

My tab going to deep sleep as majority

i just flash and wipe my tab again

Don't know how it works

now ... when I install (suspicious)apps ,I will Observe symptoms with BetterBatteryStatus and CPU Spy for a days

I Think some apps coz this problem

see my apps list(soon)
[Galaxy Tab 10.1 General] marciozh:
For me, it's solved.

Yes ! I made tests using 2 differents Sim Cards.

1. In the first test I used a Sim Card with no data plan. The tab came into Deep Sleep, but the result was not satisfactory. About 35-40% of the time of testing.

2. In the second test, I used the Sim card from my cell phone, with a 3G data plan. Result: 99% in Deep Sleep! Nothing draining the battery.

NOTE: I use my Tab only in Wi-Fi mode, but now I'll have to buy a Sim Card with a 3G data plan if I want to continue using this ICS firmware...

No need to keep the 3G data turned ON. Just keep it on the tablet, with its button turned OFF.

;)
[Galaxy Tab 10.1 General] 56789:
I'm getting ridiculous battery life on Task650's ICS (p7510).

-wifi off during sleep

-auto brightness off (adjusted manually, usually at about 60%)

-location services off (unless needed, of course)

-google auto-sync for Chrome, Voice and Google Play Music only (don't really use other G-services regularly enough for auto)

-auto-sync for Exchange email account

-samsung weather widget updates every 3 hours

Current best is a little over 5 days with moderate to heavy use including playing n64oid for a few hours and constant web-browsing/email checking:
[Galaxy Tab 10.1 General] HansiHusten:
Well to make it short:

I had the same experience as you have right now, deep sleep suddenly worked but then, after letting it rest for a couple of hours it came back, the deep sleep bug, well at least for me so I suggest you wait with your sim card exchange, but do as you please. I really hope that this will work out for you, still I have a 3g activated card all the time in the tab without airplane mode and still the bug happens totally random. :sadface:
[Galaxy Tab 10.1 General] Panos_dm:
+1. This happens to me also.

Sent from my amazing 10.1 galaxy tab :)
[Galaxy Tab 10.1 General] BretonGirl:
I'm having fantastic battery life too. I don't know why people are bashing ICS. It's obviously not the problem or everyone would be complaining about battery life.

The SIM card thing is BS. WiFi only tabs don't even have a SIM card slot. If your battery life is bad, it's one of your apps to blame. I believe most of the ones with ads in them for example connect to the ad server regularly to check for new ads. Other apps look for updates and things.
[Galaxy Tab 10.1 General] loco1412:
Ever thought, that the missing sim slot on these tabs is the reason they have there own firmware-image????

Ever thought, that this is the reason that deep-sleep works with that wifi-only firmware on 3g tabs without changing apps?
[Galaxy Tab 10.1 General] marciozh:
For me too...:(

Deep Sleep worked for a while and then returned the issue.

No more ideas.

I am waiting for CM9 stable.
[Galaxy Tab 10.1 General] general1977:
Well, the problem ist a kernel (!!!) wakelock titeled "l2_hsic". This wakelock is not caused by an app but a faulty kernel! Definitely switching the cellular state changes this behavior but it isn't cured.

Regards

Achim
[Galaxy Tab 10.1 General] BretonGirl:
Then how come not all of us are having this problem? More than one posted here that they were having great battery life, but I guess because they weren't complaining they were ignored.
[Galaxy Tab 10.1 General] havrosh:
what about different GSM/3G networks???

I found out that my GSM/3G network have wrong (old) name on this firmware.

HC 3.2: O2-CZ

ICS 4.0.4: EUROTEL-CZ

Maybe, there are some differences in network specification over the world and some of us are affected by this problem and some are not.
[Galaxy Tab 10.1 General] dmok:
I have the same battery drain problem as many of you. However, today I did two things before going to sleep: I stopped all applications (only Chrome was listed) and cleared memory using Samsung Task Manager and then I closed Battery Indicator application. And voila - from 2 AM to 10 AM I only lost 2% of battery. Before I lost 10% - 14% in 8-10 hours. I will keep Battery Indicator closed and won't clear memory or stop tasks any more to try to nail down the real problem on my tab. Are any of you that have/don't have battery consumption problems using Battery Indicator or any other similar application ?

d
[Galaxy Tab 10.1 General] aamaaeg:
Truely it drains faster

I think this is due to the setup of screen brightness and the colour scheme of ics

the tab looks much brighter on all screen brightness grading including the auto mode. I think the only way is to manually setting the screen brightness to a lower value
[Galaxy Tab 10.1 General] blackhawkwww:
I have upgraded my tab to Ganbarou 0.11 version in the hope that it saves my tab some juice while it was HC.

So far, it meets my target.

But, I hv experienced SOD twice.

Anyone knows the culprit?
[Galaxy Tab 10.1 General] havrosh:
No, because this issue is about drain in idle (sleep, deep sleep) mode.
[Galaxy Tab 10.1 General] j.go:
Fresh flash, re-partitioned with pit, airplane mode on with only cpuspy installed to check if the tab goes into deep sleep. Horrible battery life. All apps restored, airplane mode off, excellent battery life. Clearly, in my PERSONAL experience, airplane mode is causing some problems. It cannot be a rogue app, unless samsung has made it a habit of releasing firmwares with apps that go rogue when in airplane mode.

No one is denying that a lot of people are getting excellent battery life, but do not disregard the complaints of people getting terrible battery life with airplane mode on just because you haven't personally experienced it. Try to keep an open mind.
[Galaxy Tab 10.1 General] sxi200:
Cheers. Will look for it. Hopefully it's for the P7500.
[Galaxy Tab 10.1 General] sxi200:
Tried 4.0.4 again but the l2_hsic wakelock is killing me. On stock rooted. Tried factory reset and re-rooted but it's still there.

Any ideas?

---------- Post added at 02:27 AM ---------- Previous post was at 01:58 AM ----------

Hmmmm. I also have airplane mode on. Might turn it off and see if it fixes my battery issues above.
[Galaxy Tab 10.1 General] rjohmit:
I'm on stock ICS on my 7510.and I've had it off the charger for nearly 8 hours. I have hardly used it today and it's still at 100%
[Galaxy Tab 10.1 General] general1977:
I strongly believe, they haven't looked close enough. The mentioned problem doesn't bother if you are using the tablet a lot. People who have their tablet in standby a lot, will be dropping from 10 days of standby to 3 days. While the tablet is in use, battery consumption has decreased with 4.0.4.

Regards

Achim
[Galaxy Tab 10.1 General] BluesTele:
since i've done the update, my battery life both using and sleeping has improved.

i've lost under 1 % overnight sleeping, and approx. 8 % an hour when in use (vids, music, surfing,etc)....

before the update i was averaging approx 2 % overnight slleeping and 11% hourly in use.

so a nice little improvement for me !
[Galaxy Tab 10.1 General] Ie0nard0:
****EDITED****

just restart and now it works.

I have installed the Cpu Spy and there's a message saying that Deep Sleep is an unused CPU state...

Screenshots for cpu spy and about phone.
[Galaxy Tab 10.1 General] psedir:
Seems my 4.0.4 official is really draining battery. I'm gonna try JB
[Galaxy Tab 10.1 General] deliol:
Eaxct same problem here! P7500 stock 4.0.4 not rooted, with airplane mode ON, the tab drops 20% during the night doing nothing....

l2_hsic won't let the cpu fall to deep sleep.....
[Galaxy Tab 10.1 General] dmok:
I previously posted that Battery Indicator application could be the cause of my battery drain problems and now I found out I was wrong. For a day everything was OK, but in the past 9 hours battery was down 14% without doing anything. Could it be related to unplugging from charger ? Yesterday I unplugged the charger while the tab was locked and the sceen was off, the day before I unplugged it while the Tab was unlocked...

d
[Galaxy Tab 10.1 General] datastar:
Bette battery life

After a year of almost daily use, my battery was nlt lasting 4 hrs. I had to factory reset to connect to Kies because never got OTA update. Now my battery last a full day at work checking emails streaming a missed TV show at lunch and streaming the radio a few hrs.
[Galaxy Tab 10.1 General] @LiEn:
I tried few things and so far if flight mode is off and wifi is on deep sleep works perfectly. Everything else so far not working for deep sleep.
[Galaxy Tab 10.1 General] Mausas:
try to turn off the 2D acceleration or how its called in developers meniu, it really helped me, no more battery drain! 100%
[Galaxy Tab 10.1 General] garese:
Mine is turned off by default...
[Galaxy Tab 10.1 General] HansiHusten:
Its always disabled by default. Just to make sure, I enabled it and had 0minutes deepsleep and 12h @ 2xxMHz

Guess we have to accept it, there is an error in the ITA kernel/build :(
[Galaxy Tab 10.1 General] BobMiles:
Thanks for the airplane mode advice, disabling it made my tab last way longer. But still there is too much battery consumption when in standby. Why is it that I knew Samsung will be able to mess this one up, too...

Now waiting for a proper AOKP jb custom build...

Gesendet von meinem GT-P7500 mit Tapatalk 2
[Galaxy Tab 10.1 General] micko83:
battery life

Hi,

I posted some comments, includiong the one that I went back to HC because of the battery drain in stand by mode.

Now, u buddy did the update and he doesn't have the battery problem. He's done following:

1. flashed to official HC 3.2

2. wipe/factory reset all (cache, data factory reset) - in recovery mode holding down power and vol down button

3. using odin flashed official ICS 4.0.4 firmware

4. again wipe/factory reset by holding butttons (not the sw on in android)

after that he had a fresh installation of ICS and it's working perfect....in stand by, the tab is always in deep sleep, battery consumption better than in HC...

So I hope I could help
[Galaxy Tab 10.1 General] mike2nl:
Testing right now the new baltic rom now
[Galaxy Tab 10.1 General] havrosh:
Me too... After 5hrs 1% lost...
[Galaxy Tab 10.1 General] HansiHusten:
Well I installed a new kernel (see signature) and all I can say is: Its gone, finally!

Im usually not the guy who flashes just kernels, usually only a complete rom, but I can tell you, it is worth trying.

Just install the zip via cwm and you are done. even with airplane mode on it works plus you can now overclock :)

no issues so far

--edit--

ok still sometimes deep sleep bug, at least cpu goes down to 150mhz and not 216mhz.
[Galaxy Tab 10.1 General] thehitomi:
Since upgrading to ICS, battery has lasted a lot longer than on HC! Really pleased with my GTab now!
[Galaxy Tab 10.1 General] cesarr4:
Which ICS release should I flash? Italy? Turkey? India? Baltic? :confused:
[Galaxy Tab 10.1 General] challenger_P:
wondering if any of you tried this

http://xdaforums.com/showthread.php?t=1215182

many reporting good results.
[Galaxy Tab 10.1 General] HansiHusten:
that is a complete different problem..
[Galaxy Tab 10.1 General] marciozh:
Nothing.

I've tried several versions of A1 kernel and the problem persists. No Deep Sleep.

I'm going back to the stock HC 3.2.

Definitely I don't have time to be doing tests and noting that the problem has no solution.

I only leave HC 3.2 when CM9 is stable or when Samsung recognize this bug and release a new firmware.

:eek:
[Galaxy Tab 10.1 General] prasoeu168:
I also meet this issue but after i flash A1 kernel 1.5.9 XE, my bettery is going better like HC.
[Galaxy Tab 10.1 General] Kesei:
I make that by accident i tester the Deep sleep mode and bym :) i think i has somhow With the launcher to do.

Apex: 4h 216 MHz 2 h deepslep

Nova: 2h 216 MHz 30 sec deepsleep

Stock: 10 sec 216 MHz 2h deepsleep

I somone try the launchers lukę me post an answer
[Galaxy Tab 10.1 General] zavros:
Hi my dear friends

I had the same battery drain problem and i have done the following:

1. install greek 3.2 version P7500OXXKK4 from samfirmware.com

2. full wipe

3. install 4.0.4 BALTIC P7500OXXLP4 P7500XWLP5_P7500OXXLP4_SEB.zip

4. go to settings->WI-FI->advance "keep active wifi......" select NEVER

i have test it and for 12 hours only 1% battery drain and NO activity of my dual core(216MHZ) as before.

thank you
[Galaxy Tab 10.1 General] general1977:
Sure! You never get that l2_hsic kernel wakelock as long as mobile data is used. As soon as you use wifi, sooner or later that wakelock comes back.

Regards

Achim
[Galaxy Tab 10.1 General] HansiHusten:
Yeah well that sounds good, but as I dont want to stress my dataplan (200mb/month) this is no option for me and I guess also for others. My mobile is on the same dataplan and is used daily. *sigh* what a ****ty bug :(

And putting the device in complete offline mode (23h of 24h/day as I use it only about 1h/day) is not really what this device is ment to be IMHO.

But still, thanks for this suggestion. (cant confirm it though, yet)

--edit--

works.. maybe ill stick with it :D

In 10h, nearly 9h55mins DS with Airplane mode off but mobile data usage also off.

lost not even 1% of battery this night.. damn nice, but offline :/

--edit2--

after 3 days I lost about 10% battery, just awesome. will stick with it for now

--edit3--

after a reboot the bug came back, but toggling wifi one did the trick again.. sigh ^^

--edit4--

now after 4 days it doesnt work anymore lol... did a reboot, toggled airplane mode, wlan and some other stuff didnt help.. omg :o

--last edit--

and now it works again with toggling all the stuff... holy moly..
[Galaxy Tab 10.1 General] marciozh:
No solution

No solution for me ...

I tried everything that was possible to stop the battery drain (l2_hsic).

Sometimes it seems that Deep Sleep worked, but soon the problem always comes back.

My conclusion: there is nothing to do.

CM9 and CM10 are the future!
[Galaxy Tab 10.1 General] RedKing:
News ????
[Galaxy Tab 10.1 General] marciozh:
About Stock ICS battery drain... No news, but...

I used this stock ics for a few weeks and almost going crazy to stop l2_hsic wakelocks. I did all the tests and procedures possible. Nothing! ... l2_hsic always comes back.

Today, I am using pershoot's CM9 and I am happy !!

Everything works, no issues, very fast, no battery drain ...

I recommend.

:good:
[Galaxy Tab 10.1 General] sueder:
Pershoot has removed the recent links from his repository ;/
[Galaxy Tab 10.1 General] fred_be9300:
I'm surprised that nobody in the 10.1 forum has talked about the UsbStorageUnmountter wakelock causing minor battery drain in idle mode (1-2% drop / hour)

My gt 7300 (8.9 - very similar to the 10.1) suffers from this on Stock ICS Rom, and I'd be surprised it's not present in the 10.1. The same issue is found on the Galaxy Note, S3, S2, Tab 7.7, ...

Can anybody test this theory?

more info here: http://xdaforums.com/showthread.php?t=1911375
[Galaxy Tab 10.1 General] Phibs:
Modem

Try to let your device with the modem 3G or GSM always on.

At least in the P7500 the problem is identified.

If you put it in Flight Mode it wont deep sleep.
[Galaxy Tab 10.1 General] fred_be9300:
I've read about those issues also leading to increased battery consumption... all I'm saying is that usb storage unmounting also can lead to permanent wakelocks. the same issue is being found, discussed in forums of the S2, S3, Note, nexus s, tab 7.7, ...
[Galaxy Tab 10.1 General] Phibs:
Ics Battery

You are totaly right.

Just found out that the problem that i had was related to maildroid that was checking for Email. I don't understand why, even with Flight mode on, apparently maildroid was creating a wakelock that forced the ics to keep awake looking for network.

After solving that problem i connected a usb storags and bummmm. No deep sleep. Thanks to your post i rebooted the device and ics sleeps again like a baby. Will try next time the alternate method, via settings...

Thanks.
[Galaxy Tab 10.1 General] general1977:
I own a P7500 with a SIM inserted. No matter wether flight mode is on or off I get the l2_hsic wakelock. Both with mobile data on or off.

Regards

Achim
[Galaxy Tab 10.1 General] fred_be9300:
I'd love to hear if that alternate method works for you (as it does for me). Thx.
[Galaxy Tab 10.1 General] Phibs:
The problem persists and it is not related (only) to the usb storage! I'm not sure if the alternate method solves the usb problem. Sorry!
[Fascinate Q&A, Help & Troubleshooting] oblivioncth:
Hello,

My phone was previously running an unofficial version of MIUI and AOSP voodoo kernal. My phone became very buggy and what I was running on was old so I wanted to update to newer things out there today. So I knew I had to disable the voodoo kernel before installing the new ROM but getting into CWM via "Volume up and down and power" didn't seem to be working so I got into CWM using MIUI's reboot option. Unfortunately, this took me to a normal blue CWM so I though huh i guess I don't have voodoo installed then. So I wiped data and cache and attempted to flash the new ROM. about 10% in it rebooted my phone and now it gets stuck at the SAMSUNG logo. I actually can now get into the red voodoo CWM for some reason, but I can't disable it because my phone won't boot. Even though I can set it to disable since it won't boot im guessing it wont actually disable.

How can I get my phone back to stock so I can start over?

Thanks.
[Fascinate Q&A, Help & Troubleshooting] shelby04861:
You need to see droidstyle's guide on flashing rooms and going back to stock. You should not have three fingered into recovery. There us a section there for your particular situation.
[Fascinate Q&A, Help & Troubleshooting] vrahn:
You should have put it into download mode and re-flashed your radio choice with atlas pit 2.2
[Fascinate Q&A, Help & Troubleshooting] oblivioncth:
Sorry, I resolved this by flashing a DI01 Image over Odin.
[Barnes & Noble Nook Tablet] arcane76:
Hi,

is anyone working on CM10 for nook tablet 8gb? I only see development for 16gb currently. :(
[Barnes & Noble Nook Tablet] Cubanluke88:
Read through the cm10 thread and the 3.x kernel development thread. You will find you are mistaken.
[Barnes & Noble Nook Tablet] arcane76:
I will check through the forum. So we can expect a release for CM10 for 8gb soon?
[Barnes & Noble Nook Tablet] TheForceUnleashed:
We will have to see. I have a 16gigger but my cousin got herself a 8gb and now she wants JB also. Remember, when the forum is quiet, progress, is underway.
[Barnes & Noble Nook Tablet] hinxman:
Development is moving decently, considering the 3.0 kernel is somewhat temperamental with the 8gb version... I've got an 8gb myself, and am just starting to learn how to build from source etc.. just remember to be patient, and keep an eye on the development threads, they'res usually several posts a day with some type of progress being made.

If you're really itching, CM10 works for some users with 8gb tablets, but honestly, until the 3.0 issues are worked out, you'll see a lot of kernel crashes and random reboots.
[Barnes & Noble Nook Tablet] jznbrwn:
I am currently working on 8gb development using chrshoffmans cm10 and kuzmas 3x kernel. Its about as stable as the 16gb but far from ready. I've been working on cm9 but I'm abandoning that and consolidating my work singularly on cm10. I'll try to keep this thread updated.
[Barnes & Noble Nook Tablet] arcane76:
thanks alot mate!! Will love to see CM10 on my nook soon!
[Barnes & Noble Nook Tablet] arcane76:
SGT7 by meghd00t

Hi Guys,

Does SGT7 rom work well with 8gigger? any issues?

Thank you.
[Sprint Samsung Galaxy S III] bso44:
Just got my S3. Should I take the initial OTA or will that make it harder for me to root?

I've done my initial homework by searching but I'm still a little unclear. I'm so accustomed to HTC with their OTAs changing Hboot and preventing s-off, etc. I found the guide on how to root but does the bootloader need to be unlocked?

This is my first Samsung device so please be gentle to this noob.
[Sprint Samsung Galaxy S III] billard412:
Your safe to take it, initial root process will be the same regardless. You'll most likely root flashing cwm recovery or a insecure kernel in odin so the system wont matter.only the vzw model has a locked bootloader. doesnt apply to us

If you are at n00b status i personally reccomend mskips toolkit found here:http://xdaforums.com/showthread.php?t=1746680 ---guys a genius, has everything you need.
[Sprint Samsung Galaxy S III] poit:
you can't OTA update a phone that's rooted or has CWM on it, so definitely update before you root.