yashsingh1/xdaforums huggingface dataset:
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] burroughs3000:
You can log out of latitude if you go to

Maps

=> Menu on the top left

=> choose "Latitude" (or something similar)

=> left menu button on your phone

=> settings (only available if you are logged in latitude)

=> log off latitude
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] gaddy888:
I am so tired of fighting off galaxy note wakelocks.

And yes, I've signed out of latitude. It's not helped.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] oscarsalgar:
I have the same issue. Logged off latititude and there's certainly an improvement. However, there is another kernel wakelock preventing my phone from going into deep sleep: multipdp. It seems that it's related to data traffic, so i changed my exchange settings from "diffusion" to "every 5 minutes". That made things even worse because, due to security policies, the screen would turn on every 5 minutes!, so i set it back to diffusion.

the thing is: ¿is it possible to have push exchange email without having a terrible battery life at all? Of course this didn't happen in gb. But i can't revert back because I did a full wipe in stock recovery and any flashing could trigger the infamous emmc bug...
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] frasch42:
As the readers of this thread may know: I was troubled with the wakelocks, too.

I got rid of them.

Here's what I did:

I flashed back to a GB ROM (I guess any will do) and did a squeaky clean wipe-everything install of "Rocket ROM V2", changed the kernel to Franco V3 and the radio to LR1. Changed to Franco V4 when it became available.

I have beed using this configuration for 6 days now. I didn't do a single reboot since upgrading to Franco V4, I did unplug my mobile with screen off many times, I do use Nova launcher, I am signed into latitude --> no wakelocks worth mentioning.

Hope this helps.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] baebeh:
i upgraded my note to ICS via Kies, and i have this l2_hsic issue too... i got my battery life like around 40% before i went to sleep last nite, and when i woke up, the battery has gone totally flat...

how can i solve this wakelock problem? this issue is really annoying.. :(:(:(
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] turshija:
Temporary fix is to disable Wifi, then reboot the phone ...

I've also logged out of Latitude, and havent got any wakelocks in the last 24h ...
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] diamondpillow:
Factory reset didnt help, after 2 days the wakelock came back (l2_hsic)

I always disable my wifi.

I am not logged in in my map.

seriously dunno whats wrong.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] gaddy888:
This screen shot is from an App called os monitor. That long list of the errors is absent when there is no wakelock.

Any idea?
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] diamondpillow:
l2_hsic possible solution

hey guys,

I found out smth else this morning, maybe some others have already found out too. Nevertheless I will share with you first, before confirming my result

1. Go to settings

2. go to Wi-fi

3. press your menu button (lower left capacitive button)

4. press advanced (thats the only choice that pops up)

5. under "Keep Wi-Fi on during sleep" -> choose

never

6. Restart your phone.

as before, it was kept as "

always

" and I am thinking it caused the l2_hsic issue that prevents my phone from sleeping.

As of now, after 30 mins, l2_hsic is only 2m awake. The change might be due to the reboot, I am not sure. I will report back in 2 days.

Previously, I reseted back to factory setting, it didnt appear before the first charge, so I shld see what happens after the first charge

I've also tried using juice defender to narrow down the app (disabling app for connectivity when slp), but it seems to me its not an app, but rather the settings, or the modem or router or possibly hardware issue

It shldnt be an app because i monitor my data usage, i didnt seem that there is an increasing data usage which suggest that with or without the wakelock the data usage is largely based on my own usage.

heres the link where I read further for layer 2 hsic

http://en.wikipedia.org/wiki/LAN_switching

I can be completely off, if l2_hsic don't stands for layer 2 hsic. haha.

all the best ppl
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Doodle:
I do not keep Wifi on during sleep and still have the wakelock. It will have been caused by your reboot I think.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] oliie:
I have the exact same problem of this draining my phone. Some more context to help get a fix

- This occurs even when my phone is in airplane mode... So it can't be anything to do with wifi or any sort of connectivity

- My phone is (and always has been) completely stock

- I am running ICS on a Galaxy Note which was done via Kies (Singapore based)

Hope this helps, especially the part where this occurs even on airplane mode.

O.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] moikee:
If anyone is still having this problem ( l2_hsic wakelock ) can you report what radio ( Baseband version ) you are using?

I was having this problem constantly, however, after updating to XXLR1 I no longer have any such issues. Has worked for a colleague now also. This was the only change I made.

Regards
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Ast2001:
I'm using XXLPT (the base radio coming with the XXLPY firmware for DBT).

Can i change my radio stack even if I'm not rooted ?
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] ali.almahdi:
I've been facing this issue. It happens whenever I unplug the charger. A reboot is a quick fix for me.

However, I rolled back to GB for time being.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Braxos:
Same radio version
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Ast2001:
Ok, i've just changed my radio to XXLR1. I will report later if it seems to work correctly now :-)

---------- Post added at 04:49 PM ---------- Previous post was at 04:20 PM ----------

So far, so good. h2_lsic wakelock seems to be as low as possible - 10s in my case (i've never noticed this kind of low level of h2_lsic wakelock 30 mn after reboot).
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Ast2001:
A few hours later, I am more and more confident that the XXLR1 radio has solved my battery problem. It seems that the l2_hsic wakelock is no more a big battery drain.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] gaddy888:
I get this wakelock at random times. From the screenshot you can tell that the wakelock kicked in roughly 5 hours after the phone was unplugged.

I have now flashed the xxlr1 modem. So far (5 hours) after unplugging, no problem.

But then, that's not saying much.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] ukxoomer:
It is definitely the radio causing the issue, flashing to XXLR1 radio will completely cure the lr_hsic wakelock issue.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] teraxul:
I have this problem but i solved now. Battlery drain L2_hsic with franco r4. 95.5% taking this **** on one day. I changed r4 to r5. Now i dont have battery drain with l2_hsic.

Wysyłane z mojego GT-N7000 za pomocą Tapatalk 2
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Ast2001:
Ok, one hour ago, i have had a 'resurrection' of the l2_hsic wakelock even with XXLR1 (as usual preventing my phone to go into sleep mode). I'm now a bit cautious and i have to wait a few more hours before deciding if XXLR1 solved or not my battery drain problem...
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] barretp:
I just wanted to chime in and say I have this problem also.

Rom Version - Stunner 1.4.26.1

Baseband Version - I9220ZCLP6

Kernal Version - 3.0.15-I9220ZCLP6-CL343671
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] liutszho:
I tried flashing lr1 modem and tge wakelock came back after a few days.

However after reading it is a modem problem. I tried flashing la4 modem which was prior to ics and this wakelock issue.

Now after a week. I havent seen the wakelock come back.

I am on rr1 rom.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] RomBox:
so gb modem works fine with ics ROM? (I got the l2_hsic issue yesterday and google send me to this thread :) )
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] moikee:
According to this thread, it would seem that is the case.

Regards
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Ast2001:
I will try this option. Why LA4 and not LB1 or LB2 ?
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Ast2001:
I'm sorry but with LPY and the modem LA4, I have exactly the very same problem of l2_hsic preventing my phone to go in deep sleep mode. :-(
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Tomdroid:
I've come across the issue with

Stock LPF

Franco r3, r4, r5

Modem LR1

All WiFi settings

Nothing helped, the battery drainer is always back after a day or two.

Just flashed back to modem LC1. Let's see...
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] liutszho:
Sorry guys.

After a week of xxla4 it came back :(

I wanted to try xxla4 cos it was before ics
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Ast2001:
I think that it's not a modem problem but a more general one. Some users with the last UK firmware are reporting that they haven't the problem.

Envoyé depuis mon GT-N7000 avec Tapatalk
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] greatavi:
Guys, i think it's the mobile data that is causing l2_hsic wakelock in ICS. I get the wakelock for only that duration during which my mobile data is on.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] moikee:
Arrrgh

After 177 hours of perfect operation, today with XXLR1 I got the dreaded l2_hsic wakelock again .... hmmmmmmmm.

Now what ......
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Ast2001:
I have tested LPT, LR1 and LA4. I think that LR1 is the best in terms of battery drain.

Envoyé depuis mon GT-N7000 avec Tapatalk
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] evil-doer:
yeah. its cell data, not wifi, and not usb.

ill be fine for days then ill run talk and/or facebook messenger on CELL data and the wakelock comes back.

i am 100% sure its mobile cell data connections causing this. what programs specifically, i dont know.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] drbuck:
Mine was awake for 10 hours with 3G/Wifi/BT switched off.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Tomdroid:
And fail. LC1 also doesn't cure the problem. :(
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] oliie:
More information which may be of use: this process only uses cpu time when the screen is OFF. As soon as the screen is on it stops using cpu time.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Tomdroid:
Sorry but no, at least not on my phone

E.g. yesterday I had noticed some 5h 45min of L2_hsic after 6h since unplug - and I had been using the phone for over 1.5 hours (screen on time).
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] moikee:
My thoughts exactly, rebooting once per week, is a lot better than once per day. until something more promising comes along anyway.

Regards
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] gaddy888:
I've been rebooting the phone once as soon as I take it off charging.

So far no problem.

Using xxla4 modem.

This way at least the wakelock doesn't catch me unaware.

But I'd really like somebody to help the lot of us get to the bottom of the problem.

Could you (anyone??) at least try to run os monitor from the play store. Especially when the wakelock is on. I get a lot of alarm manager errors.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] naveensakhamuri:
+1 here guys... Facing the same problem... temporarily surviving by restarting the device after every recharge...

Hope someone finds a permanent solution soon...

adding a little extra info, I face the wake lock problem only when I'm connected to wifi or 3g or 2g... if I don't have any of them turned on, my battery seems like lasting forever...
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] joytest:
x_hsic services

Hi all,

I got the annoying l2_hsic and was reading this thread. I'm on DXLP9 with CF 5.6, Nova and Apex and Go launchers installed. I had Go Launcher coz I was testing out Go Locker, which is quite cool.

Anyway, after reading thru this forum, I tried to kill as many open services as possible, but it still remained. I then took a look at the BBS Kernel Wakelocks, and was scrolling thru the list.

I saw that there are other "hsic" locks:

rpm_hsic

tx_hsic

boot_hsic

I believe "x_hsic" is some kind of kernel hook for ICS, because it never appeared in GB roms before.

From the description of HSIC at Anandtech, this seems to be some kernel thing and the way of the future, if at all it is the same thing.

I guess then this needs some kernel gurus to investigate how not to trigger it.

My 2 cents.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] becosemsaida:
Well i have the wake-lock too and after some digging around i found this:

http://www.synopsys.com/dw/ipdir.php?ds=dwc_usb_lpm_hsic

MAybe it's because of the use of the charger?? I only charge at night and it's active then and only then !! I uninstalled several apps, disabled stuff i don't need but still get the wakelock. Since i charge my note at night sometimes with 30% of battery. Just a thought: when the battery reaches 100% it must have a failsafe to shut down the charging process, since the note only works with battery it uses battery untill reaching a percentage and starts charging again (wakelock due to power charging).

So peolple have two things while charging: CPU at 200mHz, and l2_hsic....

200mHz is from the charging process, nothing can be done here. L2_hsic is probably from having the usb used, although the note manages the entry of the power (yes/no).....

Just a thought......

becosemsaida
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] evil-doer:
its nothing to do with usb charging.

i have two batteries and change them EXTERNALLY. i turn off the device and swap the batteries, no usb cable touches the phone. and yet i get this wake lock all the damn time.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] liutszho:
Does switching in and out of airplane mode temporarily fix the wakelock?

Obviously it will come back later.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] hyperken:
It will come back after your next charge...
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] liutszho:
Well I made a tasker task to turn airplane mode on and off if there is any wakelock over 30 mins.

Hope it helps.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] gaddy888:
Switching flight mode has not helped rid an active L2_HSIC wakelock for me. Perhaps an automated reboot is a better idea.

Today my battery died out in 10 hours with about 1 hour of on screen time and 6 min of calls.

So tired.

I am roaming, and I keep getting notified that I've lost data connectivity because I'm roaming, and clicking on it takes me to the

Mobile networks setting Page. Here data while on roaming is already enabled. I don't know why this notification keeps popping up.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] liutszho:
Yea i noticed airplane mode doesnt fix it :(

Dont want to do an automatic reboot tho cos thats a bit scary
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] moikee:
Is everyone on this thread using LPY firmware?

I was wondering if anyone with this issue had tried LQ2 or LQ3 as others are saying the battery life is much better.

Considering taking the step myself, but didn't want to if it's already proven not to cure the fault.

Regards
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] mistertwo:
I'm on LQ2 and have the same problem.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] wombat39:
Well, I'm relieved in a way to find out that this is a recognised issue.

I have a stock Note (UK Orange) with the ICS update coming via the settings update and it's mostly well beheaved but about every week and a half it drops 50% of the battery overnight when it's supposed to be asleep and in airplane mode.

I have llama set to turn airplane mode on every night and off again in the morning. It seems from what I see on this thread the appearance of this wakelock every 10 days or so is pretty good, but the cause is mystifying. I've wondered if Accuweather could be the problem (this morning that, other than android OS, was the prime battery user, but I'm doubtful). OR I've wondered if it could be Lookout - I also have an SGS2 with basically the same apps installed except for Lookout, and it doesn't have this problem.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] gaddy888:
Does anybody else also get a GPS wakelock? I used, to frequently on gingerbread. Thought it had stopped with ICS. But it was back today!

This is such a wakelock prone phone.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] becosemsaida:
Tried to do a test and had some results.......

Did a reset on my note (normal one not factory), plugged in the charger with screen on, disabled all data connections (wi-fi and 3g) and charged it for a night.

Took it off charger unlocked, did not enable any data connection, very hard but i resisted, during all day. Some sms and calls, some music etc. etc. ALWAYS closed the app after using it.

At night did a check: no L2_hsic wakelock, battery at 70% (never happened before with data on) so did the same but this time with data connection on......

Next day: l2_hsic for a period of time. It must be related with the data connection, now i want to check if it occurs with wi-fi or 3g.

I will try some other stuff but i just can't find the time to try it out....

Stock note (no rooting) on LPY and yes i have the "bug".....

Sorry no screens, forgot completly and did a refresh on cpu spy and bbs.

becosemsaida
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] exrm:
I think I found a fix

I had this annoying l2_hsic wakelock problem.

I had to reboot every 3-4 hours to stop the l2_hsic wakelock

I'm running stock.

I disabled fast dormancy (dial *#9900# and disable) and rebooted.

This was my last reboot in 36 hours...

It looks like it fixed the problem, now 16 hours since unplugged and I have only 1 hour of l2_hsic wakelock and the phone keeps deep sleeping.

hope it helps you all
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] gaddy888:
This did nothing for me.

However, I signed out of the Samsung dive account. ( A certain "mobile tracker " App crashed and notified me. After which my battery life was nothing like I've seen before on ICS. I'm assuming this mobile tracker is related to the Samsung dive service)

Testing now. So far it seems to have helped.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Ast2001:
I signed out to my Samsung Dive account three hours ago. So far so good :-)

I will check every hour and report any problem.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Ast2001:
I'm sorry but it's not the solution. Four hours later, I have observed the return of the infamous l2_hsic wakelock. :-(
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] rockky:
Interesting that academia is researching this issue.

www.theregister.co.uk/2012/06/13/fixing_android_no_sleep_bug/
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] gaddy888:
Right you are. I got mine a few hours after the post.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] priyanv:
So is this wakelock raised right from the leaked or AOSP version ICS or from stock alone??

It seems thread started only after official release..
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] jbeef86:
Stock LPY on mine has it. I get l2_hsic and tons of deleted_wake_locks on stock. Its an issue.

EDIT...and then just like that l2_hsic gets a wakelock for the past 2 hours after doing nothing else with my phone other than locking it. Phone hasnt been in deep sleep since then. Nothing but issues with this phone and its bad if you are not paying attention because the battery can drain quickly at 200mhz.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Ast2001:
Ok. I have chosen another approach. I was on LPY and I've just changed my firmware to LQ3. I will keep you informed to the status of l2_hsic wakelock now.

Envoyé depuis mon GT-N7000 avec Tapatalk
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] frasch42:
This is strange. My device was l2_hsic-free for days after I went to RocketROM V5. Yesterday I used a friends charger (for Motorola Defy) and I got the wakelock.

This is reproducable. As soon as I use this charger and take off the phone in locked state, l2_hsic kicks in and stays until reboot. When I use the SammyCharger everything is fine.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Ast2001:
18 hours after the migration to LQ3 and only a fair amount of h2_lsic for the moment. I don't know if the problem will be resolved by this firmware but I can assure that LQ3 is a far better ROM than LPY in terms of battery drain...
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] ragazacio:
keep testing pls
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] shaftenberg:
I am on LQ3 and had the l2_hsic issue for the last 6 hours, sorry guys :)

I tested LPT, LR1 and LB2 modems, no solution.

Now I'll try with fast dormancy disabled.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Ast2001:
24 hours later and still no big l2_hsic 'flood' in my case :-) I still have deep sleep.... I have never experienced this kind of result on ICQ

For your information, I have fast dormancy disabled for weeks and it never help to avoid l2_hsic :-(
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] shaftenberg:
So, if disabling fast dormancy doesn't help either (which I'm still testing), then we can sort out these things which do not affect the l2_hsic wakelock:

- equal which modem we are using (GB or ICS)

- all available kernels are affected

- all ICS-ROMs are affected

- disable fast dormancy doesn't help(?)

- Wifi settings aren't responsible

- AC charger is equal (maybe a random thing for this user)

- turning airplane mode or data on/off does not help to kill the service

One guy said, killing the settings service helped to kill the wakelock, ok, fine.

I saw one time, that l2_hsic started just in that moment going wild, when I activated airplane mode(!).

One time it went wild when I changed from HSPA to Wifi.

One member of a german forum discovered, that l2_hsic is bound to a data transmission change of the RIL, i.e. changing cells, changing airplane mode, changing HSPA to Wifi or such things.

So, to sum everything up: which setting could be the culprit? Location service over data? Background data? USB debug? GSM or HSPA? Maybe we should seek in this direction...

[edit]

To add: l2_hsic is not bad in itself when it shows up in BBS, but under some conditions it starts to hang and doesn't shutdown itself. Let's watch out for the conditions :)
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Braxos:
Can a rooted guy please somehow disable the stock watchdog aka data volume tracker app and check how l2_hsic is going.

Thanks
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] shaftenberg:
How? :)

This is bound to settings dialog/system. There's no apk I found to freeze.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] liutszho:
Fast dormancy off does not fix it. Tested.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Ast2001:
36 hours after installation and still NO l2_hsic problem with LQ3 !!!!!

My Note has been unplugged 7 h 20 ago and I only have 7 m 13 of l2_hsic.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] kufel:
I was extatic too

After I put LQ2 I was extatic for 3 days...

Someone mentioned non-Sammsung charger - hmmm, wakelocks came back to my phone after I used Blackberry charger at work as I was doing lots of BT tethering for a tablet. So maybe it really is related to smart charging??
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] shaftenberg:
No. This is random :)

Charger/charging has absolutely no influence to l2_hsic, but it can trigger the fuel_alerted wakelock on some kernels.

To some others: I had two l2_hsic issues in almost 2 weeks, so don't rely on counting hours, that doesn't make sense.

It may be that the lock occurs fast for sure, but it doesn't need to necessarily.