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[Q] Question about Kernels

Hi, my Triumph should be arriving in the mail in just a few days and i was wondering which is the best kernel or ROM and Kernel combination that is best for battery life? I've heard that battery life on the Triumph is not so good. Maybe it's false but i would still like to know.

jerenater10 said:
Hi, my Triumph should be arriving in the mail in just a few days and i was wondering which is the best kernel or ROM and Kernel combination that is best for battery life? I've heard that battery life on the Triumph is not so good. Maybe it's false but i would still like to know.
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I would go with CM7

That's what i was planning on. Does your Triumph give you battery problems?

jerenater10 said:
That's what i was planning on. Does your Triumph give you battery problems?
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The battery life is a lot better now with the latest builds of CM7 and MIUI.
I just use CM7 and leave wifi and bluetooth off, no juice defender or anything like that and I can easily go all day with no charge, typically about a day and a half and my battery is getting low but it really depends on what you are doing like games, wifi, videos and whatnot.
Before I think there was a problem with the battery draining while in idle but things have cleared up since then, There are also third party kernels you can OC and everything, but you can use them to undervolt as well to save some battery if you know what you are doing. over on androidforums there is a lot more chatter about this phone, just so you know.

ketjr81 said:
The battery life is a lot better now with the latest builds of CM7 and MIUI.
I just use CM7 and leave wifi and bluetooth off, no juice defender or anything like that and I can easily go all day with no charge, typically about a day and a half and my battery is getting low but it really depends on what you are doing like games, wifi, videos and whatnot.
Before I think there was a problem with the battery draining while in idle but things have cleared up since then, There are also third party kernels you can OC and everything, but you can use them to undervolt as well to save some battery if you know what you are doing. over on androidforums there is a lot more chatter about this phone, just so you know.
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Thanks. I got my phone today and im loving it so far. Do you know which of those third party kernels are good for battery life and that i can install over stock? I'm not quite ready to install a ROM yet but i already did the HTC Thunderbolt Build.prop tweak and obviously im rooted.

It's usually not the kernel but whatever governor you have it set to use. Even the stock can get improved performance if you switch the governor to such--”performance”--but I'm probably not the guy to tell you about which one is best.
I also have the silly feeling a lot of misconceptions abound here...in the form of ”I changed this setting and now my device lasts longer..., oh btw I no longer play with it 24/7.” In other words, use drastically impacts battery performance. JuiceDefender is an amazing tool but it won't do you a bit of good if you're testing out your phone's Adobe Flash capabilities regularly.
Sent from my Wildfire S

The Savagezen and interactive (not sure if interactive is on any of the kernels for this phone.) gov isn't that great. At least not in my experience. I had SmartassV2 on my girlfriends phone and it got ~3600 on Antutu benchmark at 1.5 and when I used Savage at 1.5 she got ~1700. The interactive gov made my friends Dinc2 noticably slower. Just switching home screens it lagged to the point it was hard to get into the app to change the gov.

CM7 + TheOC kernel allows adjusting voltage & overclock or underclock. You really should flash a CM7 ROM. Having it just rooted can be dangerous because you're not using a custom recovery to make a backup image, and if something messes up, you don't have a backup ROM to restore. Going to a different ROM forces you to make a backup, then there's a backup to restore if you mess things up.
Governors just tell the CPU how fast to ramp up to a certain frequency, & how long to stay there. It's hard to balance fast ramp up (less lag), and low battery drain (spend more time in the lower frequencies). I like interactive/x, find that smartassv2 spends too much time in the mid frequencies (~500) even for light work. Using the app CPU Spy helps a lot to see what's going on. Also it tells you whether your phone is sleeping properly when screen is off, which is a big factor for battery drain.

CM 10 performance settings

I just got upgraded from CM 9 stable to CM 10 stable and I love it. Only problem is battery life. I feel about a 10-15% reduction with the new upgrade. I've had CM 10 for about 4 days now. I don't want to touch the performance settings without knowing what I'm doing. Is there a way to change my performance settings to extend the battery life? Also has anybody played with a different kernel with CM 10 stable? Thanks

abehbeh said:
I just got upgraded from CM 9 stable to CM 10 stable and I love it. Only problem is battery life. I feel about a 10-15% reduction with the new upgrade. I've had CM 10 for about 4 days now. I don't want to touch the performance settings without knowing what I'm doing. Is there a way to change my performance settings to extend the battery life? Also has anybody played with a different kernel with CM 10 stable? Thanks
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Don't worry about changing the cpu and governor settings. There is an option to set at boot. Make sure that is disabled, so if you have any problems a reboot will go back to default settings. I use the conservative governor, and have my minimum cpu speed set to 192. I've read that that speed is not entirely stable for many people, but seems to be working fine for me. That has been pretty good for battery life for me. I believe the default governor is interactive now, and the minimum cpu speed is set to 384 by default.

Do you just "feel" a battery difference, or do you have any actual numbers to back up that assertion? Keep a close eye on Settings / Battery and use Better Battery Stats to record solid numbers and identify what's actually eating your battery.

Also turn off google now location settings if ur not using it. They are really hard on the battery.
Sent from my SAMSUNG-SGH-I727 using xda app-developers app

Disable Google now and battery should be back to normal here is some pics. Cm10 default kernel,stock clocks, no UV, on demand governed, and deadline as scheduler
Sent from my SAMSUNG-SGH-I727 using xda app-developers app

Thanks for the replies.
It seems to be my screen that is responsible for eating up my battery. Have had the phone disconnected from the charger for 4 hours now and all I've done is 20 min with screen time doing a little bit of texting and facebook and my charge is at 75. I have the automatic brightness setting off and put my setting at pretty low.
The cell stand-by battery usage is 8% during these 4 hours. Should I maybe try another radio or is this normal? It lost signal for about 10 min today.
Just turned off google now and selected the conservative governor. Let's see if this makes a difference.
I used to be able to go all day with my phone with CM 9 and I even have the nexus battery.
Thank you for all your help

That's most definitely not normal, at least in my experience. Are you using the vanilla CM10 or some variant?
Some things to try:
Install Better Battery Stats (find the free version on XDA via a search) to see if any apps are causing wakelocks. This is a must.
Use CPU Spy or something similar to see if your phone is entering Deep Sleep. This is a must.
Turn off Google Now unless you actually use it
Turn off all unnecessary radios (WiFi, Bluetooth, GPS) unless you're actually using them
Turn off all auto-refresh settings in every app you have -- all social apps and weather are the biggies
For me, turning off the default auto-refresh in Facebook, Google+ and Twitter are massive savings alone, then Settings / Battery & BBS will help you locate the remainder of the headaches quite easily.
You might want to consider swapping kernels too, or at the very least reconsider your CPU governor and scheduler settings.

I would stay away from conservative governor you won't get much performance out of that, stick with what comes stock and use on demand.... even the default interactive sucks my battery down
Sent from my SAMSUNG-SGH-I727 using xda app-developers app

abehbeh said:
Thanks for the replies.
It seems to be my screen that is responsible for eating up my battery. Have had the phone disconnected from the charger for 4 hours now and all I've done is 20 min with screen time doing a little bit of texting and facebook and my charge is at 75. I have the automatic brightness setting off and put my setting at pretty low.
The cell stand-by battery usage is 8% during these 4 hours. Should I maybe try another radio or is this normal? It lost signal for about 10 min today.
Just turned off google now and selected the conservative governor. Let's see if this makes a difference.
I used to be able to go all day with my phone with CM 9 and I even have the nexus battery.
Thank you for all your help
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Don't use conservative, your phone is gonna be very slow and suck
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

I'm currently running the vanilla CM10
Turned off google now location access and set the govern to on demand early this morning and it is performing a little better most def.
I have noticed that my phone lost signal 4 times during the day for periods varying 5-10 min. I am currently on the I727UCLF6 radio. I'm thinking maybe I should try another one. Could that help with that battery maybe?
I have been thinking about switching kernels but I am a little doubtful because I don't want to mess up my phone too much since I so heavily depend on it. I loved the hotcakez kernel that came with AOCP, maybe i'll give it a shot this weekend.
Thanks for all the help people! Def the best forum by far on the web.

abehbeh said:
I'm currently running the vanilla CM10
Turned off google now location access and set the govern to on demand early this morning and it is performing a little better most def.
I have noticed that my phone lost signal 4 times during the day for periods varying 5-10 min. I am currently on the I727UCLF6 radio. I'm thinking maybe I should try another one. Could that help with that battery maybe?
I have been thinking about switching kernels but I am a little doubtful because I don't want to mess up my phone too much since I so heavily depend on it. I loved the hotcakez kernel that came with AOCP, maybe i'll give it a shot this weekend.
Thanks for all the help people! Def the best forum by far on the web.
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Just do a nandroid backup of the entire phone first before installing a new kernel and your risk drops to zero. If you install it and it all goes to hell, just boot back into recovery and restore your backup.
As for radio ... if you drop signal that often and your phone is constantly searching for one, I suppose that could impact the battery, sure. Are you certain you're in an area with solid coverage, though?
Learn more about the different governors and schedulers: http://forum.xda-developers.com/showthread.php?t=1950084

Yea I might have to play around with some kernels this weekend. Luckily it is a long weekend so I'll have some time if I mess up
My phone will go from 4 bars and a good signal at -78 dBM in my apartment and then randomly I'll lose signal for abut 5-10 minutes. A restart usually does the trick or I can just wait until it regains the signal which can be frustrating. I never had any problems with my signal at home running CM 10 so that leads me to think that there might be some problems with the radio.
Just want to confirm that these are the 5 radios I can use for AT&T even though I'm running JB.
http://forum.xda-developers.com/showthread.php?t=1754473

I've been using a UCLI3 modem I found on XDA a couple of weeks ago, it has been incredibly stable and strong for me. But as many people far wiser than me have said elsewhere, everyone's mileage with radios varies and it really just takes some testing to see what works best for you.

so I should be able to run the 5 ICS radios I found eventho im running jb right?
thanks for your help

abehbeh said:
so I should be able to run the 5 ICS radios I found eventho im running jb right?
thanks for your help
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Yeah if they are for the skyrocket.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

[Q] Best CPU Governor for Battery Life?

Hi all,
I have been using the ONDEMAND CPU governor for quite a while on my SGS4G running CM9 (Team Acid's version, the final herring one), and I have just gotten used to the 12-14 hour battery life that I have had ever since I switched from GB back in August 2012. However, most of the frequent users here recommend the SMARTASSV2 governor, so I tried to use that yesterday to see if battery life was enhanced.
If anything it seems that my battery life got worse (see attached picture). I am a moderate phone user in general; I use my phone for texting mostly, and sometimes I'll look something up on the Internet, but no music, WiFi and GPS are always turned off, no overclocking/undervolting. I recently purchased a new battery as my old one died about two months ago.
I was wondering, is there any governor for the CM9 ROM that is particularly good with battery but doesn't completely drain performance?
(Also, I tried to use the LZ kernel before, but it seemed to cause many more problems than it fixed.)

You've got some pretty bad wakelocks going on there. See how your phone is awake even though your screen is off? That is an issue. Also how much screen on time did you have on that run? Get Better Battery Stats(free on XDA) then fully charge and look at what wakelocks are occurring. You might also want to consider UVing if you want better battery life.

Also, if you're a fan of ondemand, I highly suggest moving to ondemandX, which actually does deep sleep when the phone is off.
But that will only help if you fix the wakelocks first. So follow hechoen's advice and your phone should be way more awesome.

Downloaded BBS today, we'll see how it goes.
Sent from my SGH-T959V using xda app-developers app

Battery life one Sense vs CM

which one has better battery life?

bstylz911 said:
which one has better battery life?
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Personally I'd say CM has slightly better battery life. My sense experience is only from stock JB rom, so can't really say about sense based cuatom roms. But with stock rom i got about 3:00 to 3:30 hours of screen-on time as with CM i got (and currently get) from 3:15 to 3:45. Depending a little on the usage of course. My use is mainly web browsing and some random gaming.
Sent from my One S

bstylz911 said:
which one has better battery life?
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In my experience, the battery life was a bit worse in JB with Sense 4+, compared to ICS with sense. I believe that CM10 is a bit better than JB with sense and maybe as good as ICS with sense but it is really heard to say without doing controlled comparisions.
One thing I noticed was that in CM10 the phone was held awake for long period of times, mostly by MAPS application. But it looks like it does not have a detrimental effeect on battery life. It is just annoying to see that your phone is held awake.

AW: Battery life one Sense vs CM
I tried different Roms as Blackbeen or Liquidsmooth which both had pretty good battery lifes. Actially I am running Viper One S 2.2.0 and its battery Life is just awesome even with stock Kernel and minimum CPU of 384 MHz. It feels like its way longer than the others. Will try it with a custom Kernel and have a look if it gets even better...
Sent from my HTC One S using xda app-developers app

I think with the various answers here, it's clear to see the difference is pretty small.
Having used both, I am struggling to actually remember which is better! Either one, if everything is behaving, will be good for 24+ hours of moderate use which is very acceptable by smartphone standards.

Best rom for battery life

Hello guys,
as for me the most annoying part of a smartphone is running out of battery when there is no chance to recharge, I want to collect your experieces with different roms concerning battery life.
WHich rom gave you the longest battery?
Cheers

There are many factors not only the ROM.
It's the kernel you flashed, it's the settings you have chosen... and at least it's your daily behavior with your phone....
Usually you have a better battery life with custom kernels...
HTC One S (4) | RootBox 4.2.2 | S-OFF

puep.puep said:
Hello guys,
as for me the most annoying part of a smartphone is running out of battery when there is no chance to recharge, I want to collect your experieces with different roms concerning battery life.
WHich rom gave you the longest battery?
Cheers
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Click to collapse
as it was answered
custom kernel with feature as ability to set minimum CPU frequency and probablly voltage control
and U'll have to try some of them in order to find out the wright one

Longest battery life i get with stock rom so far (around 20h with moderate usage)
for custom roms:
Best battery life gave me PAC-Man rom with bubbav4 kernel - which was almost like stock.
ViperOneS had the worst battery life for me.
just try some roms and kernels, it also depends on how you use your phone of course.

in my experience, 4.2.2 roms have the lowest battery life ~3.5 hours screen on + wifi on (active Web surfing) with auto brightness.
Viper rom 2.1 ~4 hours
aosp 4.1.2 (cm10) and viper 1.2.1 ~4.5
very rough numbers obviously so no one roast me. remember I'm talking about total screen on time as reported by the battery app.
The newer jb 4.2 roms are very popular and have a lot of great features, but if battery is your thing, try out some of the older android and sense roms.

unbenannt said:
Longest battery life i get with stock rom so far (around 20h with moderate usage)
for custom roms:
Best battery life gave me PAC-Man rom with bubbav4 kernel - which was almost like stock.
ViperOneS had the worst battery life for me.
just try some roms and kernels, it also depends on how you use your phone of course.
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For me it was pretty much a tie between Liquid Smooth with Bubba Kernel(OC to 1890 for heavy periods, 1134 for light usage, and complete collapse of the CPU when the screen is off) And Viper One S with the Stock Kernel. Like everyone said though you'll experience wildly different numbers depending on what settings you use and how much

Viper has always had phenomenal battery life.

IntelligentAj said:
For me it was pretty much a tie between Liquid Smooth with Bubba Kernel(OC to 1890 for heavy periods, 1134 for light usage, and complete collapse of the CPU when the screen is off) And Viper One S with the Stock Kernel. Like everyone said though you'll experience wildly different numbers depending on what settings you use and how much
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Complete collapse of Cpu when screen off? Is that pm sleep mode 1 or 0?

Thank you very much. Unfortunately my phone jack is broken so I cannot test your configs, will report after repair though.
Cheers

c19932 said:
Complete collapse of Cpu when screen off? Is that pm sleep mode 1 or 0?
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There's a setting on through Android Tweaker that gives you the option to control how the phone deep sleeps basically
Sent from my HTC One S using xda app-developers app