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CM7 Killing battery

Discussion in 'Android Devices' started by Flyguy94, Sep 1, 2011.

  1. Flyguy94

    Flyguy94 Well-Known Member
    Thread Starter

    Flashed CM7 2.6.35.14 and only getting 5 hours out of my battery. I've tried looking for rouge apps but haven't been able to find any. On stock Rom I was getting 12-13 hours. I've checked my sync's and love this Rom but gonna have to go to something else if I can't figure it out. Any suggestion? The battery also seems to charge really fast as well, don't know if that helps.
     



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  2. Yeahha

    Yeahha Usually off topic

    It could be the kernel. Try flashing IMO's 3.5.12 lean kernel that was recently released it is nicer to the battery.
     
  3. nateap87

    nateap87 Android Enthusiast

    post link? :eek:
     
  4. Yeahha

    Yeahha Usually off topic

    linkage

    Download link is in the OP I use the "lean" as I don't feel the need to use the 184 slot
     
  5. nateap87

    nateap87 Android Enthusiast

    and it's still pretty quick and makes your battery last longer?
     
  6. Yeahha

    Yeahha Usually off topic

    Yeah, IMO's kernels are the best IMO....yeah I know that statement looks dumb :rolleyes:
     
    trapperjohn likes this.
  7. bjanow

    bjanow Android Expert

    Perhaps, but it's the truth.
     
  8. Yeahha

    Yeahha Usually off topic

    I could have used IMHO or spelled out IMO's name but I didn't.
     
  9. nateap87

    nateap87 Android Enthusiast

    just flashed it then followed the terminal instructions. put it on normal/interactive x. let's hope this helps my battery :)
     
  10. Yeahha

    Yeahha Usually off topic

    It should. I ususally use either normal or extreme never the 1.92 settings and I always use interactive for the governer. You will probably do fine if you use extreme and that should help with battery as well.
     
  11. Flyguy94

    Flyguy94 Well-Known Member
    Thread Starter

    I've never flashed a kernel. Is it just like flashing a Rom? Do I need to reflash the gaaps as well? Sorry for the questions still learning.
     
  12. Yeahha

    Yeahha Usually off topic

    You will flash it like a rom but dont wipe system first. Wipe cache/dalvik cache flash the kernel zip. Reboot. Let the phone fully power up before messing with it (i.e. let the kernel settle). Enjoy!
     
    Flyguy94 likes this.
  13. Flyguy94

    Flyguy94 Well-Known Member
    Thread Starter

    Yeahha, I can't thank you enough you and Scottie have been right there to answer my questions...I really appreciate it
     
  14. Yeahha

    Yeahha Usually off topic

    Glad I could help you!
     
  15. Flyguy94

    Flyguy94 Well-Known Member
    Thread Starter

    Got it done we will see how this works :D
     
  16. nateap87

    nateap87 Android Enthusiast

    2 things: i didn't wipe the dalvik cache and i also was wondering if you leave yours overclocked. something about over clocking it to 1.4 is a bit worrying for both my phones well being and my battery life. can i get by just setting it to 1024 mhz?
     
  17. Yeahha

    Yeahha Usually off topic

    I would suggest wiping dalvik cache and cache then reflashing the kernel.

    I use speedtweak.sh and use option 2 usually, if you don't want to overclock you can use option 5 (I think) for battery, it doesn't overclock but undervolts. IIRC stock the kernel when running at 1.4 uses the same voltage as the stock HTC kernel uses at 1.0. There is nothing wrong with not overclocking, scotty doesn't overclock either, I believe the bolt is very stable running at 1.4. FWIW I had my OG droid running fine at 1.1 and stock it was 550 (600 after an update I didn't wait for)
     
    trapperjohn likes this.
  18. nateap87

    nateap87 Android Enthusiast

    doing both as we speak. from recovery i just wiped the cache partition so hopefully that's what you were referring to. also cleared the dalvik and reflashed :)

    edit: i did the normal, but put it at 1024mhz from setcpu. now, i know i picked the interactivex scaling which is supposed to underclock it while the screen is off so does me having profiles in setcpu interfere with that or should i just disable?
     
  19. Yeahha

    Yeahha Usually off topic

    Yeah, before any flash I recommend wiping cache and dalvik cache. If you were only going to wipe 1 I would suggest dalvik before cache.
     
  20. nateap87

    nateap87 Android Enthusiast

    i did the normal, but put it at 1024mhz from setcpu. now, i know i picked the interactivex scaling which is supposed to underclock it while the screen is off so does me having profiles in setcpu interfere with that or should i just disable?
     
  21. Yeahha

    Yeahha Usually off topic

    I think setCPU profiles will not cause issues but are likely not needed unless you notice in battery useage that you have been out of the lowest slot when your screen is off. I still think you should use the speedtweak.sh script in terminal and use 5 (battsaver mode), 8 (interactive governer), 14 (exit script)
     
  22. Flyguy94

    Flyguy94 Well-Known Member
    Thread Starter

    Ugh even with the new kernel I'm down to 30% after 3 hours. I have to have a bad app somewhere killing my battery. Under usage I'm at 46% on android system. Does that seem kinda high?
     
  23. Yeahha

    Yeahha Usually off topic

    I'm thinking about going back to a different kernel myself I'm down much more than normal
     
  24. Flyguy94

    Flyguy94 Well-Known Member
    Thread Starter

    Let me know which kernel you go with?
     
  25. Yeahha

    Yeahha Usually off topic

    I think I'll be going back to IMO's lean 3.5.8 it seems to be nicer to my battery. I'm down to 25% when I'm usually at 50% around now
     

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