I rooted my 4.0 US and i have noticed a smaller battery life now any ideas on how to make it last longer?
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Well, there are small things like turning off window animations and auto sync that can help. If you want to get more serious you could drop your max CPU clock speed to 800mhz (you'll sacrifice performance), or if you want to get extremely serious you could undervolt using Steve's kernal. I am currently experimenting with undervolting and will post some stable voltages to use once I find them.
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I did that but the performance went down i found an app on the market called easy battery saver and ive been using it and i have seen a huge increase i have it overclocked to 1.2 and it still last long
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use the machine not frequently
The two biggest things I've found are lower your screen brightness and undervolt the processor at the 100mhz (idle) clock speed. I think mine stock was around 950mv and I've gotten it down to around 800mv. That way the device uses even less power when it's sitting idly by.
I'm actually new to root and i dont know much about it
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Related
I'm running Bullet 1.420 Kernal, what's a good setting for setcpu for profiles and such? I've been a vibrant rooter for a long time and never looked into it, thanks!
Sent from my SGH-T959 using XDA App
Are you aiming for battery life or performance? If battery life is your goal, try what's in my signature. If you're going for performance, the simplest approach is to set your screen-on profile to 1420 (or performance governor) and nothing else, and your screen off profile to 800.
kaintfm said:
Are you aiming for battery life or performance? If battery life is your goal, try what's in my signature. If you're going for performance, the simplest approach is to set your screen-on profile to 1420 (or performance governor) and nothing else, and your screen off profile to 800.
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Oh okay, thanks, but what will happen if I put 1420 high and 100 min? Cause I want my Kernal to be free and not suppressed at the standard the phone puts, will that "free" it and will it kill battery faster? I hope you get what I mean, lol
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Shouldn't be a problem setting 1420/100. The biggest problem I've found with overclocking is the "Sleep of Death", which occurs when you don't have the proper settings for screen-off mode. At 1200 OC, it's recommended to set your minimum frequency to 400 to avoid Sleep of Death. I believe at 1420, 800 is a safe bet to avoid Sleep of Death.
kaintfm said:
Shouldn't be a problem setting 1420/100. The biggest problem I've found with overclocking is the "Sleep of Death", which occurs when you don't have the proper settings for screen-off mode. At 1200 OC, it's recommended to set your minimum frequency to 400 to avoid Sleep of Death. I believe at 1420, 800 is a safe bet to avoid Sleep of Death.
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Oh okay, and Overclocking OBVIOUSLY kills battery right? Ans would 1420 high, 800 min kill much battery?
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All depends on how you use your phone. When your phone is on and you're gaming which will ramp your speed up to the maximum, then yeah. You're gonna burn more battery. I'm more battery conscious myself, and find my UI and experience smooth as silk at 1.2 with Bali-X while still getting massive battery savings with the phone spending most of it's time under 800mhz when I'm doing less intensive tasks like SMS.
At this point, your best bet is to simply test it out. Your mileage will vary depending on the ROM and kernel version you use.
kaintfm said:
All depends on how you use your phone. When your phone is on and you're gaming which will ramp your speed up to the maximum, then yeah. You're gonna burn more battery. I'm more battery conscious myself, and find my UI and experience smooth as silk at 1.2 with Bali-X while still getting massive battery savings with the phone spending most of it's time under 800mhz when I'm doing less intensive tasks like SMS.
At this point, your best bet is to simply test it out. Your mileage will vary depending on the ROM and kernel version you use.
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Oh okay, that'll be it then I guess, I appreciate you answering all my questions when we both probably know I could've looked them up, ill be sure to thank you when I'm on a computer!
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Ive been running the "cm7-1.4highpro-test-rev3" kernel and it runs great. I've been bumping up my undervolting slowly, and im at -475 at 216 mhz, which (in theory) should be the undervolt clock speed that will save me most battery becasue i have phone set to go between 216 mhz and 312 mhz when screens off. Ive got both 216 and 312 mhz undervolted extremely heavily and i haven't seen ANY issues. The rest of clock speeds are at -100 or so, and if i push much further than that the phone locks up and does weird stuff. This would lead me to believe that the undervolting IS indeed working. But can the processor really run at -475 @216mhz and [email protected] without any side affects?? I haven't once had it get stuck in sleep mode with screen off or ANYTHING, so im a bit unsure if it is actually undervolting or not.. Myrt undervolt shows that my phone is undervolted to the specific settings i set within SetCpu. I also havent seen much, if any, difference with battery life. With 10 hours of idle time, straight idle screen off whole time, wifi, gps, mobile data, 4g, bluetooth, all that stuff off and after 10 hours my battery is down to 85%.
I limited uv clocks, so there is a low limit. One day ill add more low end clocks but it won't matter because the photon uses a separate clock for suspend. I knew people would try to uv to 500 with it set on boot and screw there phone up. So this way I didn't have thousands of user error related uv issues. Uv does works but its more for high end than low end. Low end uv causes sleep of death.
w0lf215 said:
Ive been running the "cm7-1.4highpro-test-rev3" kernel and it runs great. I've been bumping up my undervolting slowly, and im at -475 at 216 mhz, which (in theory) should be the undervolt clock speed that will save me most battery becasue i have phone set to go between 216 mhz and 312 mhz when screens off. Ive got both 216 and 312 mhz undervolted extremely heavily and i haven't seen ANY issues. The rest of clock speeds are at -100 or so, and if i push much further than that the phone locks up and does weird stuff. This would lead me to believe that the undervolting IS indeed working. But can the processor really run at -475 @216mhz and [email protected] without any side affects?? I haven't once had it get stuck in sleep mode with screen off or ANYTHING, so im a bit unsure if it is actually undervolting or not.. Myrt undervolt shows that my phone is undervolted to the specific settings i set within SetCpu. I also havent seen much, if any, difference with battery life. With 10 hours of idle time, straight idle screen off whole time, wifi, gps, mobile data, 4g, bluetooth, all that stuff off and after 10 hours my battery is down to 85%.
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haha ok I understand, just thought I was going crazy there for a bit, or had the most amazing tegra 2 known to man. is there a way to UV the suspend mode then or no? And is my battery life at idle about average or low considering the UV. do you have any kernels for CM7 that aren't limited for UV? Thanks for reply, and all your hard work on the photon!!
Sent from my MB855 using XDA App
Changing suspend voltage can only be done in source. I havnt played with it yet because i need to test it on a stable kernel that way i know any issues would come from it. As far as extra uv steps its planned after wifi fix. I wont add 500 new steps probably 2 steps at a time(-25 steps). Im also planning on changing my clock table(multiples of 216 only). I might make a half step 1.0 kernel underclocked to 108~192. It will be mem underclocked and gpu/avp underclocked. With lower voltage tables on everything. Default scheduling will be powersave. Which you can check out with cpu master right now. That kernel will also have a tweaked 2 core start/stop.
w0lf215 said:
haha ok I understand, just thought I was going crazy there for a bit, or had the most amazing tegra 2 known to man. is there a way to UV the suspend mode then or no? And is my battery life at idle about average or low considering the UV. do you have any kernels for CM7 that aren't limited for UV? Thanks for reply, and all your hard work on the photon!!
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"That kernel will also have a tweaked 2 core start/stop. "
Holy ****!
That would be the best thing
All new ones this week have tweaked 2nd core
DethMetalz69 said:
"That kernel will also have a tweaked 2 core start/stop. "
Holy ****!
That would be the best thing
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Im building a battery version of top secret now
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I flashed the cm7 1.4 240-325-300 Kernel.
In my settings what should I keep my min and max at for all time usage?
I max them and my quad score is like 5501
don't know if your supposed to keep those certain.
Also does decrease or increase battery life.
I left mine at the default values. Was wondering this myself though. How do you test quad scores?
Download quadrant standard from market
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You want the lowest value to be at the lowest(216 i think) because this allows the processor to idle at that low speed, if you keep the minimum speed at 1ghz your processor will ALWAYS be running 1ghz at the lowest, and that will be an obvious way to kill your battery in no time. So set that to the lowest, and for the maximum i personally run mine at 750 for CM9, think i had it at 800 for CM7 but cannot remember for sure. This is limiting how fast the processor can run so the lower the better as far as battery goes. It comes down to you personally, if you game and do processor heavy tasks often then having the processor underclocked like i run mine will affect your gaming/app/overall experience. Its always like 2 clicks away to bump it up to a higher speed and i have a link on my home screen so if i do decide to do anything processor heavy i can bump it up quickly. But in general it takes more power for your processor to run higher so if your really concerned about battery life try bringing it down. I can still score a solid 1,500+(with a bunch of crap installed on my Photon mind you) on CM9 with my max at 750 and min and 216. Benchmarks are honestly just a number, it comes down to how if performs for you and what you are doing with your phone.
Awesome, I'm lowering it now and battery is dropping slow so its good, thanks for the detailed reply.
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do underclocking/overclocking influence battery backup time?
Define battery backup time. Do you mean how long the battery last?
gaijinboricua said:
Define battery backup time. Do you mean how long the battery last?
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If you mean battery life, under clocking will get you better battery life but less performance. Over clocking will get you less better life and better performance.
Sent from my SGH-I777 using xda premium
ariez4u said:
do underclocking/overclocking influence battery backup time?
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Underclocking gains is entirely dependant on how you use the phone. If your phone spends most of its time just sitting around you wont gain anything from underclocking. On the otherhand, if you play a lot of games (CPU intensive) then underclocking will get you a little more game time. For things like texting, checking Facebook, etc, underclocking wont help much as your cpu doesn't spend much time maxed out anyways. On top of that, underclocking means it will take your cpu longer to complete tasks and therefore your cpu will spend more time at higher freqs to accomplish things it could've done faster at a higher clock speed.
Same goes for overclocking, you will only really see a difference if you play a lot of games or do cpu intensive tasks. Another area you might see higher battery consumption is by overclocking the MINIMUM frequency. This will affect battery even while going the little things. How much the effect depends on how high you go.
Neither oc or uc affect your phones stand by time.
Thank you dear for your detailed explanation
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What about undervolting? Seems like a much more delicate operation of all things.
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Skv012a said:
What about undervolting? Seems like a much more delicate operation of all things.
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I haven't ever really experienced much battery life difference when undervolting. Then again I don't undervolt seriously, just lightly. There may be more of an impact when u do it hardcore.
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I underclock 200-800 on demand gov and under volt a decent amt each phone is different how far u can under volt without sod but never set u voltage to set on boot or u mite get stuck but I notice a difference if I forget to apply voltage after a reboot I lose battery much quicker maybe I gain two more hours on my battery but I'm a heavy user with 5 plus hours screen time everyday
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Im taking a poll on the average rezound user cpu frequency for development
bunchies said:
Im taking a poll on the average rezound user cpu frequency for development
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lol... I would always underclock to the 1200Mhz range to save battery, or use the stock 1512 with a more conservative governor like Intellidemand, rarely ever overclocked and when I did it was just to test something or run a quick benchmark, never really saw any real gain to it at all, always thought it was better to lower the bottom end as low as you could get it to 96-192Mhz so that even if something kept it awake, it would barely be running.
Whenever I'm running "Intensive items" I sometimes overclock. Most of the time I try to underclock to save battery as ace said. Although Doesn't really save that much battery. I stay at stock 1.5GHz a lot though...
pball52998 said:
Whenever I'm running "Intensive items" I sometimes overclock. Most of the time I try to underclock to save battery as ace said. Although Doesn't really save that much battery. I stay at stock 1.5GHz a lot though...
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True... Underclocking the top end doesn't do much, although if you can lower the bottom end, and undervolt some, it can make a big difference when sleeping.
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acejavelin said:
True... Underclocking the top end doesn't do much, although if you can lower the bottom end, and undervolt some, it can make a big difference when sleeping.
Sent from my Nexus 4 using Tapatalk
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O you're saying when sleeping. Holy crap YES!! It makes a HUGE difference. I run sense 5 a lot (running that right now) and the battery life on "sleep" is already great, but when I underclock like I did the other day, I forgot to plug my phone in that night, it was at 5% I woke up and it was at 4% 8 hours later only 1% lost. Of course thats on Snuzzo's funky kernel and underclocked, but DANG!!! NEVER seen my battery life that good. The 4% also lasted another 5 hours without use! Don't know how but it did. :laugh::good:
Depends what I'm doing, usually under clocked to save battery throughout the day. I used to record YouTube videos on my rez, I would over clock for recording and benchmarks, finding the perfect i/o scheduler, governor and clock speed to run stable was fun.
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1728. Fastest mine goes without being unstable.
bunchies said:
Im taking a poll on the average rezound user cpu frequency for development
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1728 all the time.
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