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[Q] Exynos KitKat Battery Drain - gpsd & l2_hsic

27th June 2014, 08:54 AM |#1  
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Hi Guys,

I upgraded my Exynos Note 3 to Kitkat about 1 month ago, and everything was fine till about 3 days ago when I started experiencing some really bad battery drain. For the last three nights, my phone does not go into deep sleep mode at all. I first noticed this because I usually switch off data and wifi at night. Normally, I'd loose 3% battery overnight, which is good. About two nights ago, I woke up in the morning and I had lost 40% battery (90% down to 50%) overnight! When I checked out the battery stats, "gpsd" had used 80% of the battery.

Since we no longer have batterystats access in Kitkat, I installed the desktop version of WakeLock Detector, enabled USB debugging mode and connected my phone. Phone had basically been awake 97% of the time. Under kernel wakelocks, "l2_hsic" was shown as being the culprit. Now I have searched through various forums online (including xda) to try and find a solution to this. Suggestions vary from home screen replacements (nova launcher) to mobile tracking software (cerberus/findmymobile etc) to generally anything that uses location services. Some even suggest clearing application caches, disabling location services etc. I have tried every suggestion with no change. I uninstalled all mobile tracking apps, turned off location reporting, location history, and eventually location services. I've removed all battery stats apps. I uninstalled all my apps and re-installed them one by one, all with no change. Finally, I backed up my phone and did a factory reset. That seemed to work at first, but after about 3 minutes, "gpsd" was back again, and my phone would not go into deep sleep.

I've done 3 factory resets, and with no google account or samsung account configured, I still get "gpsd" rearing it's ugly head, preventing the phone from going to deep sleep and draining my battery. I'm at wits end.

Anyone know how to fix this? Would appreciate any help!
 
 
27th June 2014, 12:26 PM |#2  
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Anyone!?
27th June 2014, 11:04 PM |#3  
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OK, so I decided to take out my SIM card, just to see it'd make a difference, and what do you know! "gpsd" no longer takes up CPU time! So this is somehow related to my SIM card? Funny though, coz I'd even tried putting the phone in Airplane mode, but "gpsd" was still taking up CPU time. Does that give anyone an idea as to how this can be fixed?
1st July 2014, 08:15 AM |#4  
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bump
1st February 2015, 05:35 AM |#5  
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I'm having exact same issue with my exynos Galaxy S5, shame Samsung.
1st February 2015, 06:25 AM |#6  
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For the record, my issue fixed itself. Didn't do anything at all. It just went away and never recurred. I'm on the Russian lollipop ROM now, loving it!
7th April 2015, 10:45 PM |#7  
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Almost a year after the issue fixed "itself"... I have the same problem with my SM-N900 running offical lollipop, Im afraid I cannot wait a year to let the issue fixes itself... and cannot find a solution either.

Anyone that have managed to solve this?

THANKS IN ADVANCE!!
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