yashsingh1/xdaforums huggingface dataset:
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] ccristal:
Hi!

I posted my solution to this problem here.

I hope it may help some of you...

ccristal
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] :
Re: L2_hsic (latest update 14/02/13)

Hmm...we have not posted about using a canon printer....

Sent from my GT-N7000000000 using Tapastalker 2
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Anne Droid:
One of the people that posted on the above thread concluded that this l2_hsic problem is modem-related. Does this mean that both mobile data and WiFi are affected or just mobile data?

AD
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] ccristal:
Indeed...
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Anne Droid:
Simple Question...

Hi Folks,

How many people experiencing this battery drain/l2_hsic wakelock problem have got back to Samsung about it?

I ask the above question because, in the UK, none of the five people with whom I've had contact at Samsung UK have any knowledge of the problem. I'd have more joy discussing the latest developments in String Theory or J S Bach's interest in counterpoint! This is incredible. Here is a global problem that has been going on for many months and there are people in Samsung UK Customer Support and Technical who don't know what I'm talking about. I should point out that, when submitting an online enquiry to Samsung UK, it is necessary to specify the product that is the subject of the enquiry. So, a question about the GT-P7500 ought not end up with their refrigerator expert!

AD
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] :
Re: L2_hsic (latest update 14/02/13)

Good luck. Samsung barely even recognized the brick bug...

Our best bet would be to fix the software issue
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Anne Droid:
This is worrying. Wish I had never bought a Samsung product in the light of all this. Let me ask this question:

Is it possible for my SGT 10.1 to be repaired by one of Samsung's Approved Service Centres? If the l2_hsic problem is kernel-related, does that not mean a firmware change/update? Would a service centre be in a position to do this? I am asking these questions because Samsung UK are again asking me to return my tablet for repair. Would I be wasting my time doing this?

Thanks.

AD
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] drbuck:
I am using http://www.apkmania.co/2013/01/network-signal-speed-boost-vip-v1030-apk.html to turn the 3G network off and on and sometimes l2_hsic would then be reset without having to reboot the phone.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Molock:
great success!

i too had alot of battery drain without actaully using the phone (S2, no topic in that section so im posting it here) much, was reaching aorund 2 weeks on stock 4.0.3 but the performance wasnt all that, so i installed Supernexus & DorimanX (extreme_battery), great performance but the battery wasnt really what i expected, barely a week with low usage, tried lots of things while i searched a ton of topics about l2_hsic, using gsm-only with FD disabled, turned off play store notifications in the store itself and market updates in TB, WiFi is only on when needed, data usage is disabled, so is gps since i dont use it, baseband/ril is matching, and disabled stuff in TB/gemini/LBE which i dont use, battery got a tiny bit better but far from the 2 weeks i was reaching with stock (had alot of stuff/bloatware frozen though), i was even thinking about flashing stock again but that was gonna be the last option, performance on custom roms was far better

so it got me thinking, saw alot of l2_hsic wakeups with no appearant reason to why or what was triggering those while i had just under 1%/h drain with all that stuff off, then i remembered the last time i opened the play store before flashing Supernexus & dorimanx it didnt work, probably froze too much in TB but didnt want to get to the bottom of it since i was gonna flash a new rom & kernel anyway

so a couple days back i decided to freeze google play store/services and market feedback agent in TB and block them as wel in gemini (had a hunch they could be the culprit triggering all these wakeups since some autorun lines automatically re-enabled themself after turning them off in gemini, one even was called WAKE_UP lol), denied all access in LBE and then used the phone as i normally would (occasional WiFi, couple calls a day and thats it)

rebooted the phone a couple times the last couple days to test if it wasnt a 1-time-wonder but things stuck and im glad to say im now at 0.2%/h of battery drain in deep sleep, up to a max of 0.5%/h when in use, down from around 1%/h in deep sleep, so it will probably last a bit longer than the stock rom/kernel would have before, great success!

before i froze the store/services/agent i had around 1500 wake counts from l2_hsic on a couple of hours while the phone was in deep sleep, now im at a couple wake counts on almost a day while actually using the phone like i usually do

now, in case i need to go in the store i just have to enable the stuff again in TB/gemini/LBE, little effort imo for alot more battery life
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] MadeInSwitzerland:
The App GetRIL from Play Store did help me. It checks the compatibility of the RIL and the modem - and can fix it if needed.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Molock:
in case youre wondering if my post was full of of crap when i said disabling the store doubled my battery life:

notice the l2_hsic wakecounts are now 16 on a week, where i had a couple thousand during a few hours of deep sleep before i disabled the store/services/agent, this is the stock battery with Supernexus + DorimanX (extreme_battery), wi-fi wasnt on this week, and i only make like a couple short calls a day, same as ive always done, yet the store woke my phone up so much i barely reached a week with a full battery before disabling it
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] :
Read your earlier post... will give it a go
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] bigmaxts:
Molock can you write here what else (Google Market related services) have you frozen in TB except the Play Store itself please?

So far, i have frozen just the Play Store App (on top of freezing all other useless stuff what i did before) and i can see the lower battery drain in both deep sleep and usage :) Thanks for the hint! BTW i am on 4.1.2 Official Russian ROM.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Molock:
google play store, google play services and market feedback agent

ive disabled lots of other stuff too like gmail, google talk and things like that, i only use the phone to rarely browse and call/text so i dont need all of that, but only after disabling those 3 in bold my battery life more than doubled, and supernexus is based on AOSP so it doesnt have any of the bloatware in it either (saved me alot of time not having to disable all those again :p, there are google docs that show what can be disabled and what not on stock roms here on the forum somewhere)

took me a couple days of searching google and testing to finally find the ones that caused that big drain when my phone was actually sleeping
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] bigmaxts:
Molock thanks for that. Disabled 2 more :)

I have been using the SuperNexus rom and it is fantastic :) but for some reason i have decided to try the stock 4.1.2 (i love touchwiz) :) anyway all **** is now disabled and i am enjoying the ROM, but i still use a couple of IMs and 2 e-mail accounts on top of just calls and browsing internet.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] grzwolf:
To whom it may concern, a presumable fix is posted regarding the l2_hsic issue.

Although it's for another device.

You may check whether it applies to the discussed issue here in this thread.

Get in touch with your maintainers, perhaps it could be useful.

http://xdaforums.com/showpost.php?p=41338478&postcount=1

You should know: It's experimental and under development.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Molock:
http://xdaforums.com/showthread.php?p=41338478#post41338478
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] anirudhgargi:
HSIC is used for communcation from RIL(which handle calls,sms,internet etc) to Modem

HSIC is technology for inter processor comminication. Our phone has two main chipsets AP (here snapdragon, thus the name MSM ) and modem chipset (again by qualcomm). They both are connected via hsic, which is based on our very own USB . The protocol stack is also the same of the standard usb 2.0 !

Everytime the CP (modem ) tries to communicate with AP , say for network notification or small time data sync, you will see a wakelock being hold by the hsic driver in android kernel. Its being hold so long the data transfer is there and wakelock is released after some safe period of no activity

I admit its one of the most holded wake lock often interrupts and wakes up the system, but that whats it does good to us.. it keeps us connected over network.

If you wanna debug something without interruption from msm hsic , do a airplane mode on. This will shut the no. of suspend wake up by over 90%.

Also please refer this post for L2 thing !!! :

http://xdaforums.com/showthread.php?t=1674242&page=2

Hit thanks if i am able to explain.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Harsimran Singh:
Solution for l2_hsic wakelock..

You cannot get rid of it but there's a solution which is kind of permanent.I had this issue with my s4 gt-I9500 running android 4.3

what we can do is just make sure that everything is stock on your handset and then go to

settings then

security then

there's an option called

change security level

select it and then select high.

It will make all kernel wakelocks disappear.

I am using wakelock detector and in kernel wakelocks it shows nothing (blank) and now my battery is back to normal with more than 1 day of deep sleep.

press thanks if i helped you out.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] angelshie:
..hey mate I am V4.3 but that option in security is not available. .can u show a screenshot
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] shubham540:
i am also facing this bull-**** wakelock issue on my Samsung Galaxy S4 (GT-I9500) since last few weeks, it draining my battery very fast over night only... 100% charged at night but when i wake up in early morning and check my device, i found that battery is just 10% charged :(
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] skivnit:
You have a lot going on there. Make a dump and post it in the bbs thread you will get help. I used to get a lot of that wakelock but latest perseus kernel fixed it for me. I also removed some apps
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] TheCarDoctor:
Hey Everyone ;)

I had exactly same issue. The only thing i have done was:

1 put your phone to airplane mode

2 turn it off

3 take out the battery for a few seconds

4 turn it on

5 turn off the airplane mode

Now i have 2min 48s l2_hsic wakelock and phone is unplugged since 4h 52min
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Harsimran Singh:
Sorry for late reply.. Heres the screen shot and once again i am going to tell what to do.

Firstly go to settings

Then more

Then security

And then change security level

And set it to high
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] vaibsch:
I have galaxy note, android 4.1.2, I am note able to find this option in security or otherwise.

---------- Post added at 09:29 AM ---------- Previous post was at 09:16 AM ----------

not* able to, sorry for typo
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] :
Probably because the thread was hijacked by non n7000 users
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] AndroidBorph:
l2_hsic solved

** solved **

I think I got it! My god, I was flashing several versions of CyanogenMod, factory reset, really blank phone without even gapps, flashed new modem, nothing, BBS still showed like 1% deep sleep and l2_hsic has tremendious amount of wake locks.

That post above is simple but was the key:

http://xdaforums.com/showpost.php?p=48243650&postcount=301

- Airplane mode

- Shutdown

- Remove battery for a while

- Insert and boot.

I'm feeling so stupid, it seems that I never had the power completely off. I wasn't aware that there could be a chip with software that could survive boots and flashing modem etc.!!
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Braxos:
It stays awake just plug it and when the charge complete sound come Don't swype finger to unlock the screen just remove the plug. You will see that the screen will stay on even it should go black after 5 seconds because it wasn't unlocked, but on this situation. So if you press the power button screen goes black ofc but phone stays awake at 200 as it was charging
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] frasch42:
A little OT, but still: CM9 gives me plenty of SODs, so I will have to go back to stock ICS. Better have wakelocks than a completely dead phone without any warning what so ever.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] GDT:
Got this too, very annoying... Any solution yet?
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] frasch42:
I've been running Rocket ROM V1 for about 3 days now. Works great.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] hyperken:
Temporary solutions is to turn on flight mode, restart your phone. Take out battery for 10seconds, then turn on the phone and let it to full load. After that turn off the fight mode. It did went to deep sleep mode.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] eroracing:
I have this issue also but i can perform above step without pulling battery just leave off for about 10 seconds then reboot with success, but i agree with this problem being annoying!
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] frasch42:
Got a 9h50min l2_hsic today on Rocket ROM V1 after 3days. This is so effing annoying.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Pingoin-am-See:
Hello,

i used the rocket v2 and had a high accu draining with L2_hsic wakelocks.

Now i chanced my modem to XXLR1 from here http://xdaforums.com/showthread.php?t=1645202 and i think it works fine.

Only 12 seconds L2_hsic wakelocks in the last 24 h and much better battery life.

Ingo
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Braxos:
Found out that the tuneIn when used it has the same time as the wake locks and the L2_hsic.

Corrected tuneit to tuneIn
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] liutszho:
Will try the XXLR1 radio, thanks.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Doodle:
Following this thread with interest, as I too suffer from this wakelock. Basic question we should ask the community though, is whether anybody knows what L2_hsic actually does do?
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] frasch42:
What exactly is "tuneit"?
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] gaddy888:
Could the wakelocks be related to an App?

I was suspecting nova launcher. Anybody else?
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] octavian90:
I just noticed this problem today, and incidentally I started using nova launcher over apex today. I am leaning towards Nova as the culprit as well!
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] gaddy888:
I uninstalled nova. Will report after a few days, if the wakelock returns.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Doodle:
I do not use Nova, and have this wakelock. So this is at least not a Nova-exclusive.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Ast2001:
I've _never_ installed Nova Laucher and the l2_hsic wakelock is present on my Note.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Braxos:
I think it has something to do with radio signal. As I said above when using tuneIn a online radio app to listen a rock radio the L2_hsic has the same minutes lockout as the app or +- 2min.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] gaddy888:
Then perhaps loading an older gingerbread radio might help.

I'm no longer rooted, has anyone tried this?
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] purple zebra:
I've just woke up to to find my phone has had this problem over night and lost about 60% of the battery in 9 hours.

I've never used Nova Launcher, so can rule that out here.

I'm personally suspecting Chrome as the culprit, though I'm basing that purely on the fact that it was the only process running that was running for roughly the same amount of time as the wake lock. I admit, this is not the most scientific of conclusions, but its the best I have.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] katyarevishal:
Yes, me too dont have Nova launcher but facing same issue. I have chrome but cant say if its a culprit, bt can analyse over it.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Belfia:
I got a 6h wakelock from l2-hsic today and I never installed neither nova or chrome. So I assume they can be ruled out
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Braxos:
Main reason is unplugging the charger without unlocking lockscreen (swipe to unlock) or unplugging when screen is black.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Belfia:
Atleast a quick reboot solved it for me. Now the wakelock is gone again.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] gaddy888:
The problem is, this is not a repeatable experiment. ( Does it happen every time, Or more often, if unplugged that way?)

But a single reboot always makes it go away. None of the fancy maneuvers required.

Should we all list our apps and see which ones are in common. That way eliminate the uncommon ones.

There could be the following scenarios.

A. We all (on this thread) have a bad piece. Unlikely. But can happen.

B. It's the rom or kernel. Unlikely because many more would've noticed this problem. I, for one am on the stock ddlp8 rom. I even had the problem on the lp5 rom.

C. It's caused by something we've all installed.

D. It is a fairly common problem but only we are vigilant enough to notice it :-D. Also very unlikely.

EDIT: Somebody on another forum found says that l2_hsic is related to the USB processor.

http://forum.lowyat.net/topic/2357990/+1580

So, MAYBE it IS the unplugging while screen off which is causing it.

What memory cards are you all using. I have a Kingston Class 10 32GB card. Does this come under USB?
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Belfia:
Better battery stats displays it as a kernel wakelock. So i suppose its related to the kernel not some app behaving badly.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] bigmouth66:
Dev Franco says it's related to the modem http://xdaforums.com/showpost.php?p=26695164&postcount=3069
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Braxos:
That's why I have posted tuneIn get it use it for 10 min and see before and after the L2_hsic on bbs it has the same time with the tuneIn. But why it comes on with the charger and locked screen, that I don't know.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] liutszho:
Tried LR1 radio. Doesnt fix it
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] burroughs3000:
I have the same Problem. I found out that the Problem is solved when i kill the Settings Service. The Phone stays ok all the time, no battery draining, no wakelock, till i recall the settings. Then the wakelock is there again.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] jaraya13:
How do you kill the settings service?
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] burroughs3000:
I have a german Phone. Don't know if the english Names of the Items are right. Perhaps someone who has a english GT-N7000 can translate ?:

Kill the Settings (german: Einstellungen) Service:

Go to Settings (german: Einstellungen)

=> Applications (german: Anwendungen)

=> Running (german: Ausführen, Third Tab !)

=> Choose The "Settings" Entry (german: Einstellungen)

=> Hit the "Stopp" Button
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Ast2001:
I've killed the Settings Service one hour ago but i've noticed that the l2_hsic system wakelock has been reactivated a few minutes ago preventing my phone to go in deep sleep mode.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] burroughs3000:
On my Phone the l2_hsic system wakelock is reaktivated when i open the Settings tab again.

=> Perhaps some certain settings on the settingstab trigger the problem. I have the suspicion that it has something to do with the location Services, but I'm not sure.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] moikee:
Solved it for me ... well for over 30 hours now

Well, I've had this problem since upgrading to ICS, it would be ok for a short time after booting, but would return after a few hours.

I flashed the latest LR1 radio and I've not had any problems now for over 30 hours.

Sure I still get a few l2_hsic wakelocks, but no where near the amount I did get.

I'm now achieving a good 75% - 80% deep sleep again, and my battery has returned to how it used to last when I had GB.

Regards
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] liutszho:
I used it for about 2 days. It came back on the 2nd day
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] LOulOo:
i'm also affected by the l2_hsic system wakelock

i'm running Alba v2, and i had no problem. Yesterday i flashed Franco kernel r4 and since i have this problem.

i flashed LR1 radio and will monitor it now, but first reboot and deep sleep a few second after...
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] liutszho:
Trying xxla4 radio right now.

So far it hasn popped up yet. Will report later
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] moikee:
It's now over 2 days for me and still looking extrememely good, It never made it a day with the last radio without the l2_hsic wakelocks coming back in numbers, but XXLR1 is looking more and more as if it's solved the problem for me.

I got to the end of the day yesterday with over 50% battery remaining which considering I had been using my phone throughout the day I think is very good.

Regards
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] burroughs3000:
Solved my wakelock Problem: Logged out of Latitude in Maps (don't know why I was logged in :confused:)

Look at:

http://xdaforums.com/showthread.php?t=1213604

I'm sure you all know that already. I'm such a damn noob !
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] diamondpillow:
I am facing this issue too.

I am using a 5400mAh mugen batt. previously on GB, my usage can last me 24hrs, now it can only last 16hrs or less. I installed lesser apps, and lesser widgets. Disable account sync and google backup. Settings more or less kept the same.

Overnight my batt can reduce by 21%, it never happened before. lol. ICS...

btw I did a search on HSIC, and found out to be High-Speed Inter-Chip, which I do not know if its in anyway related to what we need to know abt L2_HSIC.

below is an article that might shed some light into our understanding of l2_hsic

http://www.anandtech.com/Show/Index...phonestablets-are-limited-to-36mbps-over-wifi

I do not think its any of the launcher. It should be something to do with connecting to internet.

Did a factory reset on my phone just 11hrs back. currently the l2_hsic is not preventing my phone to go into deep sleep. I will report back in 2 days.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] liutszho:
Good find! Will give it a try
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] burroughs3000:
That's really annoying! Every time you get a google maps update you get logged into google latitude again. Google does not even ask you, if you want to.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] turshija:
Same problem with me :(

I had "GPS" wakelock problem, solved it few times by restarting the phone with WiFi turned off, but now I've faced l2_hsic wakelock ... :(

I've killed settings process, and logged out of latitude, I will report back in few days if the problem still occurs ...