Database Users

Using CM7? You must read this! (Correct post)

Ok guys. I have to admit, I was about to give up on CM7 due to battery issues and what seemed to be memory leaks progressively making my phone lag more and more throughout the day. I have found something some of you may not be aware of and I wanted to share this amazingly helpful kernel with you.
Using x99, Scary, and stock kernels regardless of governor I seemed to maybe get 8 hours of battery life with moderate to heavy use. I am proud to say, using bcnice20's kernel I have had my phone on for 9 hours with 60% battery life today. This is incredible, even with lighter use on the other kernels I had NOWHERE near this amount of battery left.
Most of you may not have seen this kernel because it isn't posted. (as far as im aware) Let me help you out. First, go into your Market and download Kernel Manager. There is a lite version in there that is free. If you have an extra buck or two donate to the developer for making a neat app where you can download kernels in a convenient place by downloading the pro version.
What you will be downloading is called bcblend SIO tinyRCU kernel. I have not tried VR tinyRCU kernel yet. Not sure what the differences are, if someone could elaborate that'd be appreciated.
Regardless, I find the sweet spot for this to be at 245MHz min and 1GHz max on Interactive governor to work really well. The phone does not seem to get laggier throughout the day and consistently performs well, snappy, and just way better than the other kernels. (No offense to x99 and Scary, I appreciate all you've done!)
Give it a try and let me know if you all have similar results! I have heard that AOSP gets less battery than Sense ROMs from people on this very forum, and this may be the kernel to put that little debate to rest.
Oh, and be sure you have the latest CM7. I am on 7.0.2.1 trying this out.

Thanks ima try this out
Sent from my PG06100 using Tapatalk

+1
I've been flashing too much to test out battery life but bc's kernel is just like melted garlic butter smooth. At 768mhz max my Shift still hums along like it's OC'd
^ Shift Faced

jesusice said:
+1
I've been flashing too much to test out battery life but bc's kernel is just like melted garlic butter smooth. At 768mhz max my Shift still hums along like it's OC'd
^ Shift Faced
Click to expand...
Click to collapse
I owe it to you for having me download kernel manager.

Well with CM7 and the x99 kernal seems to give me the best battery life with the SMARTASS governor. About 20 hours with medium to heavy use.

Link?
Sent from my EVO Shift 4G powered by CM7

koolkid09 said:
Link?
Sent from my EVO Shift 4G powered by CM7
Click to expand...
Click to collapse
There is no link at this point, you have to do it via kernel manager. I'd upload it but I don't want to without bc's permission.

I haven't use any other "controllers" other than the one built into cm7... can I use that or is there a prefered one to change governers and such. Thanks!
Sent from my PG06100 using XDA Premium App

lilgrass71 said:
I haven't use any other "controllers" other than the one built into cm7... can I use that or is there a prefered one to change governers and such. Thanks!
Sent from my PG06100 using XDA Premium App
Click to expand...
Click to collapse
Since CM7 lets you change governors right in its settings I uninstalled SetCPU for now, in theory I would think it would cause more battery drain but I don't know for sure. But yes I just changed it right in CM7. I changed the governor to interactive and set the max cpu frequency to 1036MHz.

Gonna try this out. I love CM7 but the battery is killing me. I pray this works.

Android system & cell standby seem to be the battery use culprit. I will give this a try though but don't really think its in the kernel. Ill report back...
Sent from my PG06100 using XDA App

This kernel seems to be really good about not sucking the battery while on standby for me, that seems to be the crown jewel of it all. Right Now I am at 14 hours off the charger with 29% left.. remember I was lucky to get 8 hours most days before using this kernel.

This is off-topic, but along the same lines: which kernels gave the best battery life for Sense?

+1 OP was right I flashed this kernel and so far so good on battery life
Sent from my PG06100 using Tapatalk

c00ller said:
This is off-topic, but along the same lines: which kernels gave the best battery life for Sense?
Click to expand...
Click to collapse
Honestly I didn't get much difference between x99 and bcnice20's 1.5GHz kernel so either of those two. Scarykernel SUV works well on Sense if your phone can boot it too.

fifedogg said:
Android system & cell standby seem to be the battery use culprit. I will give this a try though but don't really think its in the kernel. Ill report back...
Sent from my PG06100 using XDA App
Click to expand...
Click to collapse
It seems to be true. I'm def getting better battery life. I also calibrated my battery but I've done that before without any major change. So far I have 5 hours of quite a bit of use and I'm at 71% I would normally be around 55-60% by now. I wonder what the main difference is with the kernel...

PaulB007 said:
Ok guys. I have to admit, I was about to give up on CM7 due to battery issues and what seemed to be memory leaks progressively making my phone lag more and more throughout the day. I have found something some of you may not be aware of and I wanted to share this amazingly helpful kernel with you.
Using x99, Scary, and stock kernels regardless of governor I seemed to maybe get 8 hours of battery life with moderate to heavy use. I am proud to say, using bcnice20's kernel I have had my phone on for 9 hours with 60% battery life today. This is incredible, even with lighter use on the other kernels I had NOWHERE near this amount of battery left.
Most of you may not have seen this kernel because it isn't posted. (as far as im aware) Let me help you out. First, go into your Market and download Kernel Manager. There is a lite version in there that is free. If you have an extra buck or two donate to the developer for making a neat app where you can download kernels in a convenient place by downloading the pro version.
What you will be downloading is called bcblend SIO tinyRCU kernel. I have not tried VR tinyRCU kernel yet. Not sure what the differences are, if someone could elaborate that'd be appreciated.
Regardless, I find the sweet spot for this to be at 245MHz min and 1GHz max on Interactive governor to work really well. The phone does not seem to get laggier throughout the day and consistently performs well, snappy, and just way better than the other kernels. (No offense to x99 and Scary, I appreciate all you've done!)
Give it a try and let me know if you all have similar results! I have heard that AOSP gets less battery than Sense ROMs from people on this very forum, and this may be the kernel to put that little debate to rest.
Oh, and be sure you have the latest CM7. I am on 7.0.2.1 trying this out.
Click to expand...
Click to collapse
I have been using the x99 kernal and i have about 1 d and 12 hrs with about 45 % left.. I also have the calibrator apk from the market so it wipes the battery stat when im at 100%. and various other apps that deal with the speed of the sd card and what nots. So, me coming from the Hero is very happy with this phone...
Thank you for sharing your findings... THIS IS SO AWESOME !!!!!

CrashV2010 said:
I have been using the x99 kernal and i have about 1 d and 12 hrs with about 45 % left.. I also have the calibrator apk from the market so it wipes the battery stat when im at 100%. and various other apps that deal with the speed of the sd card and what nots. So, me coming from the Hero is very happy with this phone...
Thank you for sharing your findings... THIS IS SO AWESOME !!!!!
Click to expand...
Click to collapse
Holy crap that is good battery, how often are you using the phone?

Thanks PaulB007. Followed your suggestion and my battery life has DRASTICALLY improved!

PaulB007 said:
Holy crap that is good battery, how often are you using the phone?
Click to expand...
Click to collapse
Medium use.
On my Gingerbreaded Evo-Shifted Premium XDA App.

[Q] Which kernel is your favourite?

Trying to gauge what the general consensus is for best kernel for AOSP right now on the shift. For two reasons.
1. I am curious as to which direction I should aim my kernel at(Performance right now...)
2. So we have a general idea for anyone who asks this question(asked on irc more than you'd think).
Also, what things do you guys want/look for in a kernel in a list from most important to least important?
Topics of interest, battery life, performance, features, governors, schedulers, anything.

SCARY SUV duh! Great battery life. Good performance! 1.9 ghz oc (which is highly unnecessary but awesome anyway!)

Scaryghoul said:
Trying to gauge what the general consensus is for best kernel for AOSP right now on the shift. For two reasons.
1. I am curious as to which direction I should aim my kernel at(Performance right now...)
2. So we have a general idea for anyone who asks this question(asked on irc more than you'd think).
Also, what things do you guys want/look for in a kernel in a list from most important to least important?
Topics of interest, battery life, performance, features, governors, schedulers, anything.
Click to expand...
Click to collapse
I've been using your latest kernels lately and they've been great. Battery is pretty good and performance is usually outstanding.
Main thing I look for is 1. Performance 2. Battery Life 3. As long as it has Scary governor (don't what it is but I get the best performance/battery)
I'm sure 1 and 2 are backwards from most people but I'm never too far from a charger and I like to run oc'ed.

1. Performance/optimization/smoothness
2. Battery life
3. Configuration
I'm currently using rockmod asop with smartass/bfq/245-1.116
Sent from my PG06100 using XDA App

jefftet said:
1. Performance/optimization/smoothness
2. Battery life
3. Configuration
I'm currently using rockmod asop with smartass/bfq/245-1.116
Sent from my PG06100 using XDA App
Click to expand...
Click to collapse
Ditto... Exactly the same here...
Sent from my PG06100 using XDA Premium App

I would say the same as the posts above except I would switch battery and performance. Battery life is more important to me

notsointeresting said:
I would say the same as the posts above except I would switch battery and performance. Battery life is more important to me
Click to expand...
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+1
Evo SHIFT

1.performance 2.batterylife 3.features/organization
Easy 1.2.3. I mean battery life is great but if my phone sucks in the process. Well ya know I'll just get an iphone
Sent from my HTC EVO shift 4G running the latest and greatest cyanogen using the XDA app.

[Q] Choosing a ROM, battery life a must

Hi. I'm thinking about flashing my first ROM on the Droid X. I've been using rooted GB for awhile and I'm finally just getting bored and ready to try something different. I really am not looking for much though. My order of prefs are:
Stability > Battery Life > Performance
Mods and tweaks and things of that nature are not really a huge concern for me. I just want everything to work well, and have great battery life. I'd love to hear some suggestions.

Ryzor said:
Hi. I'm thinking about flashing my first ROM on the Droid X. I've been using rooted GB for awhile and I'm finally just getting bored and ready to try something different. I really am not looking for much though. My order of prefs are:
Stability > Battery Life > Performance
Mods and tweaks and things of that nature are not really a huge concern for me. I just want everything to work well, and have great battery life. I'd love to hear some suggestions.
Click to expand...
Click to collapse
i know this is gonna sound funny maybe.
i have a vzw droid-x that i am running the alltel rom on.
i put the phone in airplane mode and enable:
wifi off never
power savings wifi always on
i get at least 24hrs
now the equivalent rom to this would be the vzw 2.2.340
if you do not enable airplane mode and disable everything else i dont see why you would not be able to get the same results.
i get amazing battery life with the rom i said i was using above and dont forget this is with an "always on wifi" never ever disconnects

DSX and Shuji are great candidates for you. DSX is not flashy. It is completely reliable and battery life is stellar. You will not be disappointed. Shuji has great battery life as well and is more customizable. My primary phone always stays on DSX though. Ran 5 straight hours of Netflix and still had 5% left. Not sure too many roms can do that.
Sent from my DROIDX using XDA App

I also run DarkSlideX and can verify what is said above. Battery life is excellent. I probably make 20-30 minutes of call a day along with 2-3 dozen texts and 2-4 hours of web, forums, etc. I'm usually off the charger around 6:30am and back on it around 9-10pm with 20-30% battery remaining.
Stability has been awesome as well. I have had one reboot in 2 months, it happened about an hour after flash and that was it. BBCrackman did an excellent job with this.
If you want to try a theme for it, wulf has made some equally as nice themes, too. There are also a few custom sliders and a crt mod, too.
Everything can be found at MyDroidWorld and each has a dedicated thread complete with instructions. Best part is you're already on the pre-rooted 596, so all you should have to do is flash DSX right on top.
EDIT: also, much of the VZW bloat has been removed and it still has some blur present. HDMI support is working, too.
Sent from my DROIDX using XDA Premium App

Give apex a try. Very stable and fast. I usually got about 18+ hours on stock battery with heavy usage.
Sent from my SCH-I510 using XDA Premium App

I'm not quite sure how to respond to Apex and 18 hours of HEAVY usage. On a stock battery? Up till now I've never questioned someone's post, but this individual seems to have a serious question he'd like some input on. I don't have to be a modder, developer or themer to know no rom gives 18 hours of heavy use unless it's hooked up to a car battery. And even that may be questionable.
Sent from my DROIDX using XDA App

What about vanilla rom?

Thanks for the feedback guys. DSX and Shuji were a couple that had jumped out at me in my readings. I think I'll give them a shot!
-Ryzor

Dsx was my first flash and haven't gone looking for another. Stable good battery, I'm a heavy user and smooth.
Across the airwaves via DarkslideX in 602 limbo.......

Wow. I went with darkslide and I'm loving it. I fully charged the night before last and I'm still at 50% today. That's with lower than usual usage, but still a huge improvement in battery life.
Sent from my DROIDX using XDA App

Ryzor said:
Stability > Battery Life > Performance
Click to expand...
Click to collapse
Yeah, you and the millions of other X users.

Ryzor said:
Wow. I went with darkslide and I'm loving it. I fully charged the night before last and I'm still at 50% today. That's with lower than usual usage, but still a huge improvement in battery life.
Sent from my DROIDX using XDA App
Click to expand...
Click to collapse
Glad you gave it a try. If you haven't already get battery calibration from Nema on the market and run that as well.
Sent from my DROIDX using XDA App

The latest cm has great battery life, and is buttery, smooth. As far as stability, and I have yet to have a problem, but but there is a slightly higher chance of issues compared to other roms.
Sent from my DROIDX using XDA Premium App

Best rom for battery life?

Does anyone know the best fully functioning rom with the best battery life?
(Sense or AOSP)
Thanks in advance!
Sent from my Huawei U8800-51 using xda premium

CyanogenMod 7 with tiamat kernel gets pretty good battery life. The kernels tend to have mor eaffect on battery life then the roms themselves.

Thanks!
And for some reason my gf's EVO is dying really fast. I mean it drains 1% every 5 mins.
I replaced the battery and still the same thing. It's running CM7.
Sent from my Huawei U8800-51 using xda premium

Decks Tiamat 3.3.7 CoD tweaks vipermod 499 or 537/245 on smartass
Sent from my PC36100 using XDA App

Try MIUI with Tiamat 3.3.7 SBC

Sounds like she might have 4g running all the time. Or maybe she might be updating/refreshing her background data to often. Only use 4g to down load big files or steaming vedio. Check her 4g connection and turn off or her sync rate set it to every 3 hours or more. If one or both are the culprit then she'll see a big improvement.
I run EVO Deck rom with cyanogenmod love it. And every thing works.
Hope this helps

I figured I'd chime in because you said you wanted a fully functioning ROM. CM7 and Deck had always yielded the best battery life for me with the last rev of the Savage Zen Kernel, but if you're like me and are very anal about the phrase "fully functioning" then it should be noted that the AOSP ROMs don't have 720p video recording. If that doesn't bother you than CM7 or Deck all the way.
That said i'm running TommyTomato's Classic ROM with the Freedom Agressive kernel and I'm getting 25+ hours on a charge which puts it on par with any AOSP ROM/kernel combo I've run. Might be able to get a little better on AOSP, but I'd say that's pretty damn good and it's fully functioning as in EVERYTHING works 100%.

pvaldeben said:
Sounds like she might have 4g running all the time. Or maybe she might be updating/refreshing her background data to often. Only use 4g to down load big files or steaming vedio. Check her 4g connection and turn off or her sync rate set it to every 3 hours or more. If one or both are the culprit then she'll see a big improvement.
I run EVO Deck rom with cyanogenmod love it. And every thing works.
Hope this helps
Click to expand...
Click to collapse
4G is never on, Background data is unchecked, Email is set to manual sync, brightness is dimmed, no wifi. I feel as if I've done every battery saving trick in the book.
But I realized yesterday that I had SetCPU at 700mhz to save battery. I uninstalled it and the battery life wasn't dropping so rapidly. I can't say that was the issue. I'll have to run a few more test.

CTTKDKing said:
I figured I'd chime in because you said you wanted a fully functioning ROM. CM7 and Deck had always yielded the best battery life for me with the last rev of the Savage Zen Kernel, but if you're like me and are very anal about the phrase "fully functioning" then it should be noted that the AOSP ROMs don't have 720p video recording. If that doesn't bother you than CM7 or Deck all the way.
That said i'm running TommyTomato's Classic ROM with the Freedom Agressive kernel and I'm getting 25+ hours on a charge which puts it on par with any AOSP ROM/kernel combo I've run. Might be able to get a little better on AOSP, but I'd say that's pretty damn good and it's fully functioning as in EVERYTHING works 100%.
Click to expand...
Click to collapse
I will definitely try that combo and see what happens. I always flash roms but never kernels, to scared haha.

I get better battery on drews ICS ROM Than any from I've run in a year. I use it as a daily, it isn't completely fully functioning though, as 4g doesn't work and video is iffy.
That said, after I updated to latest radio, my battery is dying much faster........did you do the radio update ?
Sent from my PC36100 using xda premium

KayxGee1 said:
I will definitely try that combo and see what happens. I always flash roms but never kernels, to scared haha.
Click to expand...
Click to collapse
If you're flashing ROMs, you're already flashing kernels. Don't fear the kernel flash. Tiamat Lee on CM7 or Deck's is where it's at.

scottspa74 said:
I get better battery on drews ICS ROM Than any from I've run in a year. I use it as a daily, it isn't completely fully functioning though, as 4g doesn't work and video is iffy.
That said, after I updated to latest radio, my battery is dying much faster........did you do the radio update ?
Sent from my PC36100 using xda premium
Click to expand...
Click to collapse
Nope, no radio update. Im going to see how the battery life is at the end of the day without SetCPU.

MIUI or salvagemod 1.4 with Tiamat 3.3.7 SBC

smelkus said:
If you're flashing ROMs, you're already flashing kernels. Don't fear the kernel flash. Tiamat Lee on CM7 or Deck's is where it's at.
Click to expand...
Click to collapse
I meant interchanging kernels with custom roms.
A lot of people are saying the same thing so I guess I'll try those recommendations.

If you want sense go with team nocturnals shooter ROM it has been my daily for a good while and I really love the battery life
Sent from my PC36100 using XDA App

Dude Tommy's classic rom with the standard kernel gets some of the best battery life I seen!
Sent from my PC36100 using Tapatalk

gainiacster said:
Dude Tommy's classic rom with the standard kernel gets some of the best battery life I seen!
Sent from my PC36100 using Tapatalk
Click to expand...
Click to collapse
+20
This is Sense based ROM with the best battery life for evo 4G

KayxGee1 said:
4G is never on, Background data is unchecked, Email is set to manual sync, brightness is dimmed, no wifi. I feel as if I've done every battery saving trick in the book.
But I realized yesterday that I had SetCPU at 700mhz to save battery. I uninstalled it and the battery life wasn't dropping so rapidly. I can't say that was the issue. I'll have to run a few more test.
Click to expand...
Click to collapse
Any wake lock?
Sent from my PC36100 using xda premium

KayxGee1 said:
Does anyone know the best fully functioning rom with the best battery life?
(Sense or AOSP)
Thanks in advance!
Sent from my Huawei U8800-51 using xda premium
Click to expand...
Click to collapse
I'm on Tommys Classic Supermagic,running the Hard to kill battery calibration script from Zepplins thread and i'm getting the best battery life i've had on any other rom and i've used this script with about 10 different roms,from AOSP to Sense 3.0,wont run 3.5 because of bugs and no 4G,after a full charge with alot of phone calls,texts and surfing,i held a charge for 4 days,it was 67% on the second day and actually died on the forth AM.

I'd definitely do a comparison between screen-on and awake time.
If you don't know this, you can access it through Settings > About Phone > Battery Use/History/Etc. See if the bar graphs of screen-on match awake. If you see a long bar under awake, but not a matching one under screen-on, you probably have a process or app that is stuck and needs to be removed/re-installed or have it's data cleared.
Note: it's normal to have some awake time that doesn't match screen on as apps/processes still have to perform there activities even with the screen-off, however, it shouldn't be a ton.
The best app out there to study this IMO is betterbatterstats. Hope this helps! Cheers!

[Q] Anyone can explain ? :)

So I have had my Nexus 4 for 7 exact days, was suffering from a terrible battery life of 1:30 hrs MAX screen-on. Until I flashed CM10.1+Franco's latest kernel and my phone has a 3:30 hrs of screen time on ! - I tried AOKP with Faux and some other rom combinations...Any one can explain why?
And clearly the battery life on WIFI surpasses the one on 3g.

It probably has a lot to do with the "msm_hsic_host" kernel wakelock that is present on the stock kernel. Flashing to either franco or faux kernel is supposed to be a great way to fix it and increase battery life

Because Franco Kernel is like magic?
Edit: oh hey! you're the same guy from yesterday I suggested Franco Kernel to and pm'd me for additional tips

Ensifolk said:
So I have had my Nexus 4 for 7 exact days, was suffering from a terrible battery life of 1:30 hrs MAX screen-on. Until I flashed CM10.1+Franco's latest kernel and my phone has a 3:30 hrs of screen time on ! - I tried AOKP with Faux and some other rom combinations...Any one can explain why?
And clearly the battery life on WIFI surpasses the one on 3g.
Click to expand...
Click to collapse
1:30 screen time Max? Damn.... Do you use your phone as a satellite? And WiFi IS ALWAYS better on the battery than 3g, that goes for any phones.
Sent from my Mako Nexus quattro using Tapatalk 2!

barondebxl said:
1:30 screen time Max? Damn.... Do you use your phone as a satellite? And WiFi IS ALWAYS better on the battery than 3g, that goes for any phones.
Sent from my Mako Nexus quattro using Tapatalk 2!
Click to expand...
Click to collapse
Wasn't even using my phone for anything but Browsing/Facebook/Whatsapp! LOL - And thanks guys for the reply, and yes Im the guy who pmd you man! Thanks a lot! Will give Faux a go right now And check how things will work....

Ensifolk said:
Wasn't even using my phone for anything but Browsing/Facebook/Whatsapp! LOL - And thanks guys for the reply, and yes Im the guy who pmd you man! Thanks a lot! Will give Faux a go right now And check how things will work....
Click to expand...
Click to collapse
I suggest using https://play.google.com/store/apps/...yLDEsImNvbS5iaWdleWVzMHgwLnRyaWNrc3Rlcm1vZCJd with those kernels. I use Franco's paid app but Trickster is a good free alternative!

zephiK said:
I suggest using https://play.google.com/store/apps/...yLDEsImNvbS5iaWdleWVzMHgwLnRyaWNrc3Rlcm1vZCJd with those kernels. I use Franco's paid app but Trickster is a good free alternative!
Click to expand...
Click to collapse
Thanks for the suggestion. Tinkering with phone settings is not in my priority list, but knowing what the kernel is doing with my phone is definitely useful if I decide to tinker later.
And free phone state knowledge is priceless (as in it has no list price :cyclops

KyraOfFire said:
Thanks for the suggestion. Tinkering with phone settings is not in my priority list, but knowing what the kernel is doing with my phone is definitely useful if I decide to tinker later.
And free phone state knowledge is priceless (as in it has no list price :cyclops
Click to expand...
Click to collapse
Not sure if it has the ability to disable logging and events (i think it does). You can disable those two features for better battery life (very insignificant but every bit helps, right?) and you can disable fsync if you choose to (more IO speed, less stability mainly if your phone was to randomly reboot).
Plus the free color changing is always nice to have.

3 to 4 hours with screen on is normal battery life for a stock Nexus 4.
It sounds like you were running something that was draining the battery.
When you updated the phone, the new ROM turned off the culprit.
The battery drain is not necessarily caused by an app, it could be one
of the Google services or bad reception. Even changing the phone's default
settings can result in much better battery life.

This might be a stupid question, but could switching from stock kernel/ROM fix my antenna radio reception bull**** issues?
Sent from my Nexus 4 using xda app-developers app