Drain Battery: GPS kernel wakelock
Hello, thanks to "Better Battery Stats" (http://forum.xda-developers.com/show....php?t=1179809
), I've seen that after using the GPS with Google Maps (after using it I turned off the GPS), the phone does'nt enter into deep sleep, remains awake, drying the battery.
BBS shows that the process "GPS" (under "Kernel Awake") never ends, and the only way to end it is to restart the terminal. The drying is especially evident in the night (one night in my deep sleep or battery dropped to 1%, but with the process "GPS kernel awake" the battery loses 25-30%)
I'dont know if this is a problem of some ROMs, Kernels, Google Maps, etc. because I read that also happens in other devices (http://forum.xda-developers.com/show....php?t=1419087
; http://forum.xda -developers.com/sho...p? t = 1442368
I'm using: MiniCM7-2.1.6, Kernel 220.127.116.11-nAa-08, (thanks to @nobodyAtall for this great ROM-kernel), Undervolt, SmartassV2 and min CPU to 19Mhz.
I can add:
1) the problem no depends on the program, simply turn on the GPS on the Widget energy of the status bar and after turn it off, and the "GPS process" start and never ends, draining the battery.
It also happens with other programs besides Google Maps: AlpineQuest, GPS Status
2) If you turn off GPS you must restart the device to no leave running "GPS process"
Another solution is to restart the device with the GPS on and not turn off ever. With this the "GPS process" does'nt stuck and the battery will not dry. You can use Google Maps (or other application), the GPS works well and when you come out of the application does'nt happen that the "GPS process" keep the device awake drying the battery. Also, my experience is that leaving the GPS always on does'nt waste a lot of battery, if you are'nt using an application that uses it.