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Root Low Voltage Kernal by ejhart

Discussion in 'Android Devices' started by Roadhog, Jun 24, 2010.

  1. Roadhog

    Roadhog Member
    Thread Starter
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    May 5, 2010
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  2. Tony N.

    Tony N. Well-Known Member
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    May 10, 2010
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    Just installed and ran radiant (the game). works great. hoping for better battery life.
     
  3. jasonb1985

    jasonb1985 Well-Known Member
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    Jan 5, 2010
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    Radio Shack
    did a nandroid backup first then installed. never had a problem with heat or battery life, but if it helps i'll take it anyway.

    the phone seems to run just as good and fast as before.
     
  4. bshockme

    bshockme Member
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    May 23, 2010
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    Running this kernal with jagerrom 1.1. Very stable. Too soon to tell on how much battery life improvement there will be. Marginally less heat when using processor intensive apps for long periods. I believe most of the power saving will come when it is at the lower speed steps, so heat probably isn't a good indicator. I will give it a few days, and give my impression of battery improvement.
     
  5. Aaron1017

    Aaron1017 Member
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    Installed as well. Will reply in a couple days.
     
  6. Frenchy180

    Frenchy180 Active Member
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    Can I run this without installing a custom rom? If so, do I still need to wipe the data on my phone first?
     
  7. yojoe600

    yojoe600 Well-Known Member
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    yes u can and no u do not have to wipe
     
    Frenchy180 likes this.
  8. patkicks10

    patkicks10 Well-Known Member
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    I wanted to test this for you guys, so i charged phone fully before i went to bed last nite and put this undervolt kernal on.. seems like its making battery last!
    I also haven't noticed any deference on performance so thats good!

    I will update this throughout the day! :)
    Uptime:12.47
    Awake:2.01
    [​IMG]
     
  9. yojoe600

    yojoe600 Well-Known Member
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  10. iowabowtech

    iowabowtech root@android:/ #
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    May 2, 2010
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    Making the Establishment nervous
    Iowa|USA
  11. yojoe600

    yojoe600 Well-Known Member
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    i have no problems so far... and even overclocked the battery seems better... since my sleep profile is soo low in clock
     
  12. Tony N.

    Tony N. Well-Known Member
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    Are people having trouble tethering with n-draft enabled?
     
  13. jasonb1985

    jasonb1985 Well-Known Member
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    nope. no problems here. i am running the undervolted kernel with N and it's working.
     
  14. yojoe600

    yojoe600 Well-Known Member
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  15. pardonmyfreedom

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    Some people (like me) are having issues with the N driver. Range and dropped connections seems to be issues. I haven't confirmed any tethering options. Use the Non-N undervolted kernel if you have issues with the N driver. Also, there is no overclocked kernel with non-N drivers.
     
  16. answerman

    answerman Well-Known Member
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    Apr 20, 2010
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    Appleton, WI
    Waiting for patkicks10 to update... I'm very interested in seeing how battery life is affected by undervolting. I'm pretty happy with my battery life, but for those who have issues with it and are willing to take a slight performance hit, this sounds like the answer.
     
  17. iowabowtech

    iowabowtech root@android:/ #
    1,493

    May 2, 2010
    12,170
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    Making the Establishment nervous
    Iowa|USA
    Well, I'm gonna find out about any battery savings because I'm running the undervolt now. Strictly undervolt, no wireless N.

    BTW, are there any quality free options out there that compare to SetCPU?
     
  18. yojoe600

    yojoe600 Well-Known Member
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    yes there are some over at XDA but they are in a big thread u jsut need to look for them. i still have one if someone wants it uploaded
     
  19. patkicks10

    patkicks10 Well-Known Member
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    Hey sorry it took me so long to update...
    totally forgot.. :p i still haven't charged..
    [​IMG]
     
  20. answerman

    answerman Well-Known Member
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    Apr 20, 2010
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    Very cool... as a fair comparison, how would your battery status have been after 19 hours on the stock kernel?
     
  21. Pacific

    Pacific Well-Known Member
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    May 23, 2010
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    mekanik
    SoCal
    I'm not seeing a difference compared to my phone. What were you doing? If that's gameboid at 2xfastforward for two hours it would be great.

    Edit: Someone needs a before and after with a system panel monitor active to record the cpu usage.
    Here's me it's actually 49% on the HTC battery widget so...
    [​IMG]
     
  22. CheeseJam

    CheeseJam Well-Known Member
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    What are the downsides to a low voltage kernel? Why don't all phones run on "low voltage"?
     
  23. ejkeebler

    ejkeebler Well-Known Member
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    it's crap like this, that makes me think i have a problem with my incredible, even on my best days i might get 3 hrs of awake time and 24 hours of Up and thats down to 10% range......sigh....i wish i was getting this kind of usage, my goodness....

    **Edit**

    PS. I'm using the seido 1750...
     
  24. patkicks10

    patkicks10 Well-Known Member
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    I have been using phone/texting/some web browsing.. nothing to much
     
  25. Bearly

    Bearly Well-Known Member
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    Sorry if this is a stupid question, but this obviously requires root, right?

    What's the easiest root method? I see a few methods but not sure which one is "non-dev" friendly.

    I'd love to undervolt my CPU and return the extended battery so I can have the phone last greater than a day with moderate use.

    Thanks.
     

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