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Root Root + OverclockWidget = Insane Battery Life 40+ Hours

Hi, well I just spent an hour reading this thread on my evo. I will root my phone today and try out these suggestion. I have been unplugged since today at 530am and now, 4 house later I'm below 50%... I have task killer and everything is shut off.. I have been using it a lot for web browsing but still. I would like to see how this rooting & set CPU or OC is helping me with getting more working time on the phone because I intend to have it clocked down all the time..
 
evo-owner2 said:
Hi, well I just spent an hour reading this thread on my evo. I will root my phone today and try out these suggestion. I have been unplugged since today at 530am and now, 4 house later I'm below 50%... I have task killer and everything is shut off.. I have been using it a lot for web browsing but still. I would like to see how this rooting & set CPU or OC is helping me with getting more working time on the phone because I intend to have it clocked down all the time..
Click to expand...

Just so you know, there are now a bunch of over/under clockable and under voltage kernels in the xda dev forums. I'm using one that's clocked at 1.19 ghz awake and 120 mhz asleep. It's just about doubled my battery life.
 
pingpongboss said:
Just so you know, there are now a bunch of over/under clockable and under voltage kernels in the xda dev forums. I'm using one that's clocked at 1.19 ghz awake and 120 mhz asleep. It's just about doubled my battery life.
Click to expand...

Amazing.... can you please share the name of those?

So.... I'm supposed to root my phone and then under/over clock it? I read about how you need to get some kind of code that stops the phone from resting the CPU after you clock it....? Or is thst going to happen with those new kernels?
 
evo-owner2 said:
Amazing.... can you please share the name of those?

So.... I'm supposed to root my phone and then under/over clock it? I read about how you need to get some kind of code that stops the phone from resting the CPU after you clock it....? Or is thst going to happen with those new kernels?
Click to expand...

One such kernel is this [WIP] [7/4] Higher framerate on Novatek panels | Kernel inside | Now for Froyo! - xda-developers

More kernels available. All these overclockable kernels break camera FYI.

Root your phone, install setcpu, and set the speeds.

Setcpu now also has an option to "disable perflock" that might allow you to underclock without installing a custom kernel. Never tried it myself though.
 
pingpongboss said:
One such kernel is this [WIP] [7/4] Higher framerate on Novatek panels | Kernel inside | Now for Froyo! - xda-developers

More kernels available. All these overclockable kernels break camera FYI.

Root your phone, install setcpu, and set the speeds.

Setcpu now also has an option to "disable perflock" that might allow you to underclock without installing a custom kernel. Never tried it myself though.
Click to expand...


what do you mean "breaks camera"?

I am still on android 2.1. should I just make the jump to froyo 2.2? When the update from sprint comes it will it be a problem?

BTW- I believe the rooting makes you loose your warranty. so can you unroot your phone?

Sorry for the multiply questions- "measure 10 times cut once"

:D
 
evo-owner2 said:
what do you mean "breaks camera"?

I am still on android 2.1. should I just make the jump to froyo 2.2? When the update from sprint comes it will it be a problem?

BTW- I believe the rooting makes you loose your warranty. so can you unroot your phone?

Sorry for the multiply questions- "measure 10 times cut once"

:D
Click to expand...

You can flash one of the froyo roms ifyou want to. it won't affect any official updates that sprint pushes out. I'm using the EVOlution froyo Rom and it works great. Breaks camera means it doesn't work. Yes I do think you can unroot, look at the xda forums for more info.
 
MDbandit said:
+1
Click to expand...

Just tried it the perflock disabler myself on my girlfriend's Evo running unrevoked root, and it allowed me to underclock her Evo down perfectly. I love seeing a flat line in the battery monitor. The only bad thing is you gotta do the perflock disabler on boot every time.
evo-owner2 said:
Ok. How about using this Simpleroot?
[Program] SimpleRoot .1 ---- 3 Click Root w/ nand unlock!! - xda-developers

I am going to ask a real noob question but I don't have the time to look it up: what is ROM?

(sorry..)
Click to expand...
Yea simple root should work, though I've never personally tested it. ROM is a custom version of the operating system. imagine if someone took Windows and made a custom version with theory own enhancements and theme.
 
pingpongboss said:
Just so you know, there are now a bunch of over/under clockable and under voltage kernels in the xda dev forums. I'm using one that's clocked at 1.19 ghz awake and 120 mhz asleep. It's just about doubled my battery life.
Click to expand...

Perflock disabler is working on the Damageless rom. Would you mind posting all of your SetCPU settings so I can copy them please?
 
xxkinetikxx said:
Perflock disabler is working on the Damageless rom. Would you mind posting all of your SetCPU settings so I can copy them please?
Click to expand...

Main screen: Max:1190400, Min: 128000, Scaling: ondemand, Set on Boot: Checked

Profiles:
CAP201007051858.jpg

The last item that you can't see is Battery < 100%, which is set to the same as the Main screen.
The Priority # are not important. It's just important that they are decreasing.

With the screen off, 2-hour view on System Panel's battery monitor is almost horizontal.
 
Can someone confirm whether or not the perflock disable function works on the latest version of Fresh? Not sure how to check...
 
stevo746 said:
Can someone confirm whether or not the perflock disable function works on the latest version of Fresh? Not sure how to check...
Click to expand...

Confirm it yourself - without using perflock disable, drag the MAX slide all the way to the left, then go to Info tab and do a Long Bench.

Then do the same with the perflock disabler. You should get much slower benchmarks. Let us know how it goes.

Edit: with the disabler at 245 mhz I get 5000 ms. at normal speed (998 mhz) I get 1000 ms.
 
I get the same on Fresh .5.3... This means it is actually working, but does this mean that it will no doubt affect battery life? I have nothing to compare it to, as I just rooted yesterday.
 
stevo746 said:
I get the same on Fresh .5.3... This means it is actually working, but does this mean that it will no doubt affect battery life? I have nothing to compare it to, as I just rooted yesterday.
Click to expand...

Grab juice plotter or system panel and see for yourself. Maybe go for a day without perflock disabler and then another day with it. I can say its saving me serious battery life in my personal tests.
 
pingpongboss said:
Grab juice plotter or system panel and see for yourself. Maybe go for a day without perflock disabler and then another day with it. I can say its saving me serious battery life in my personal tests.
Click to expand...
Would be cool if you can start a new thread about your finding of SetCpu. A full on review would benefit a lot of us. Thanks.

Oh btw, how much battery life did you save by using SetCpu?
 
htc.EVOlution said:
so from your graph, your only using 25% after a day of usage? GPS on with wifi on. no bluetooth form what I can tell.
Click to expand...

Mm, I guess so. Can't say for sure since I've never gone through a day without doing something incredibly battery destroying like playing games or reading my RSS feeds with screen brightness jacked up. In fact I've been switching ROMs and making nandroid backup/restores every day.. can't be good for the battery life lol

Wifi on, Bluetooth off, GPS on, Mobile network Data off (ATT dumbphone contract not up yet), Brightness Auto for most of the time, Task killer set to autokill when screen is off.
 
pingpongboss said:
Mm, I guess so. Can't say for sure since I've never gone through a day without doing something incredibly battery destroying like playing games or reading my RSS feeds with screen brightness jacked up. In fact I've been switching ROMs and making nandroid backup/restores every day.. can't be good for the battery life lol

Wifi on, Bluetooth off, GPS on, Mobile network Data off (ATT dumbphone contract not up yet), Brightness Auto for most of the time, Task killer set to autokill when screen is off.
Click to expand...
looks like it's time for me to purchase SetCpu and test for myself
 
Somewhat related... I just used Galaxy S' SetCPU to underclock at 400MHz, it's lagfixed and usually gets 2100ish on a quadrant test, I got 958, so there's little debate that these underclockers do do something - and coming out of sleep the phone seems a bit sluggish for a few seconds. In my mind there's no doubt these work to underclock and therefore should save battery
 
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