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Root Hydra Undervolted Kernel

Discussion in 'Android Devices' started by mickym5, Jul 20, 2010.

  1. mickym5

    mickym5 Well-Known Member
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    I have not really noticed any real improvement in battery life using the undervolted hydra kernel. Am I doing something wrong, or has anybody else noticed this?
     

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  2. iowabowtech

    iowabowtech root@android:/ #
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    I found the same thing. I also had some screen tearing when using it.
     
  3. Dmtalon

    Dmtalon Well-Known Member
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    I have definitely noticed an improvement in battery life. I've only been using it for two "normal" days now (3rd day total). Yesterday was my first back to work, typical usage. My battery display didn't move much until like 4:30pm. At 11pm last night I was at 47% and that was taken off the charger around 6:30am w/o any bump charging.

    Seidio 1750 battery.
     
  4. mickym5

    mickym5 Well-Known Member
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    What do you mean by screen tearing
     
  5. iowabowtech

    iowabowtech root@android:/ #
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    Looks like scrolling, horizontal lines kinda like static looked on an old TV only not nearly as obvious. Especially noticeable on white screens.
     
  6. TheWhiteBandito

    TheWhiteBandito Android Enthusiast
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    I have the overclocked kernel which is also undervolted, and I experience in an increase in battery life... are you sure the kernel is installed correctly?
     
  7. crazydog

    crazydog Well-Known Member
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    Use SetCPU with the kernels to get better battery life! :p
    Ever since installing the undervolt stock clock kernels, and using SetCPU (245MHz max when screen is off, slower clock speed as the phone gets hotter/battery goes down), I get up to 4 hours more battery life than with the stock kernels.
     
  8. iowabowtech

    iowabowtech root@android:/ #
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    IDK, I used the standard undvervolt w/ wireless N. Installed on two separate occasions and had the same thing both times. Never ran SetCPU with it however. I didn't realize I could with that kernel.
     
  9. TheWhiteBandito

    TheWhiteBandito Android Enthusiast
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    I don't suggest using SetCPU with it. The developer only has two guidelines for the kernels, this is rule #2
     
  10. yojoe600

    yojoe600 Android Expert
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    make profiles with set cpu makes it much better for sleeping if you underclock
     
  11. cuban11182

    cuban11182 Android Enthusiast
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    I used the uv for a while now. Just switched to ov 1.15. Hopefully dont have any stability issues.
     
  12. welbinator

    welbinator Android Enthusiast
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    are the kernals specific at all to your software version? can I use the hydra kernal i was using with my 2.1 on my cyanogenmod 2.2?
     
  13. ACD168

    ACD168 Android Expert
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    No, definitely not. 2.1 kernels are 2.6.29 and 2.2 kernels are 2.6.36 or something like that, either way don't do it.

    I can't find it right now, but from what I understand there is a CM6 kernel that was released recently to use for cyanogen
     
  14. tco05

    tco05 Member
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    I had a hydra kernel before I went to 2.2. I noticed a decent positive difference when I had "normal" usage. But heavy usage dragged the power down much faster.
     
  15. mindleak

    mindleak Newbie
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    I could get through an entire day with 2.1 + undervolt kernel... now I'm on 2.2 and my phone dies hours before I go to bed... might go back to 2.1 for now :\
     
  16. welbinator

    welbinator Android Enthusiast
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    the hydra kernels work with CM6 but it disables the camera. possibly other things too I dunno. my hotspot does not work (the one in settings > wireless & networks > tethering & portalbe hotspot) but I don't know if that's the kernel's fault or CM6's fault.

    anyways it's not worth it to me. I'd rather have a camera than a few hundred more MHz.
     
  17. welbinator

    welbinator Android Enthusiast
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    just FYI I restored my phone to CM6 with the stock CM6 kernel and the portable hotspot works now. so it must have been the hydra kernel messing that up.
     

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