[Q] Which kernel gives the best battery life? - EVO 4G Q&A, Help & Troubleshooting

Just a quick question...I'm running 3.70....and I'm currently using kernel 15.
Which kernel gives the best battery life?
Thanks.
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proxcee said:
Just a quick question...I'm running 3.70....and I'm currently using kernel 15.
Which kernel gives the best battery life?
Thanks.
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
It depends on your phone you have to try done out try some of nets.or ziggy
Swyped From My Rom But I Will Always Be A Mynion!

proxcee said:
Just a quick question...I'm running 3.70....and I'm currently using kernel 15.
Which kernel gives the best battery life?
Thanks.
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
like nuggy said, it depends. it seems like everytime i update my rom i need a new kernel to go with it.
i personally recommend netarchy's. i used his 4.1.9.1 kernel with great results for a long time, but recently upgraded to his 4.2.1.
you can check evobenchers for a general rundown on what kernels are running at, but once again, every phone handles things differently and your results may vary.

SpaceMonky said:
like nuggy said, it depends. it seems like everytime i update my rom i need a new kernel to go with it.
i personally recommend netarchy's. i used his 4.1.9.1 kernel with great results for a long time, but recently upgraded to his 4.2.1.
you can check evobenchers for a general rundown on what kernels are running at, but once again, every phone handles things differently and your results may vary.
Click to expand...
Click to collapse
+1 4.1.9 was the best then I got a hwd 004 :-( I gave up my camera got 4.2.1 then 4.3 came out
Swyped From My Rom But I Will Always Be A Mynion!

Thanks for the help...I'll check it out.
Sent from my PC36100 using XDA App

I have an HTC Evo 4G rooted running Myn's rls 5 .
What's the best kernel to get the most out of my battery ?
Sent From One BadAss Rooted Evo 4G On Myn's Warm 2.2 Rls 5 Steroids Via XDA App. ;-)

ima straight flash addict. ive flashed 95% of evo roms and kernels out there, unmatched battery life is SBC kernel #15. it honestly lasts me all day and im a heavy user but apperently it can lead to your phone blowing up ive never had that problem tho so ill keep taking the risk

Others are right. Try a few and see what works best. Try Netarchy's HAVS kernels with SBC for full battery and smartass or conservative governor (SetCPU from the market to set it easily).
SBC got a little harder to find recently, but it's out there, just not on the main netarchy page. Give the devs a little time and they'll work out the right legalese to appease the fear mongers...

I have myn rls5 as well and I use netarchy's 4.3.1 no SBC with cfs and havs (the newest beta) and have been doing okay with it. I typically have about 15%-25% at the end of an average day. It also improves the speed of myn rls5, which I like.
I gave up SBC for all my nandroid backed-up roms when everyone stopped supporting it, but I do still have SBC #15 v7 if you would like it (PM me and I'll upload it to you).
Keep in mind that a few people have claimed that it destroyed their battery, but I didn't overclock and all the data I've read on my phone tells me that everything was fine. So obviously, no one is responsible for your phone blowing up but you, lol.
I used SBC #15 v7 for about 2 and a half weeks and it was the best battery life I had. I ended every day at about 30% battery life and I'm a moderate user. When I flash to mikfroyo, I keep that kernel as the performance of the rom plus the battery life is a combo from awesomeville.

Related

[Q] Battery Kernal?!?!

So I decided to root my evo a couple of days ago but I didnt flash any roms so Im still using the stock sense ui. Are there any good battery kernels to use with stock sense ui because Im having a hard time finding any? What do you guys suggest?
knowledge561 said:
So I decided to root my evo a couple of days ago but I didnt flash any roms so Im still using the stock sense ui. Are there any good battery kernels to use with stock sense ui because Im having a hard time finding any? What do you guys suggest?
Click to expand...
Click to collapse
If I were running a sense ROM I would flash Netarchy's kernels...
netarchy or ziggy's are your main choice listed on XDA. else where on the web you can find Baked kernel and kings kernel.
i would just start with Netarchy and see how it goes.
Thanks alot guys. Ill try them out...
I'm kind of slow with this. Which file would I download if I wanted to use a kernal out of this thread? http://forum.xda-developers.com/showthread.php?t=876590
knowledge561 said:
I'm kind of slow with this. Which file would I download if I wanted to use a kernal out of this thread? http://forum.xda-developers.com/showthread.php?t=876590
Click to expand...
Click to collapse
First make sure u read up on SBC so you are aware of any 'possible ' issues. That said I use SBC, and I would use the netarchy 4.2.2 less aggressive HAVS
i dont really suggest using a SBC kernel personally. if you decide yuo want to it depends the more aggresive the undervolt the better the battery. this can impact performance and not all phones like an aggressive undervolt kernel and can reboot more often.
I would jsut find the netarchy kernel thread itself and lookf or the latest and try the aggressive undervolt kernel. if you have performance issues (random reboots) then flash the less aggressive one.
I'm not really digging an SBC Kernal as well. You of any good kernels that aren't SBC?
SBC-HTC15
Best yet
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knowledge561 said:
I'm not really digging an SBC Kernal as well. You of any good kernels that aren't SBC?
Click to expand...
Click to collapse
Just look for netarchys thread... they don't have SBC
Really surprised no one sent you to MYN's warm 2.2 rom thread....great rom....lots of great kernal options....lots of mods...it truly is the king of roms for your evo...give it a try you won't be disappointed...let me know if you have any questions. Mike
Sent from my MYN ENHANCED EVO 4G!!!

(Q) CM7 Battery Kernel. Which one?

Hey guys, I'm just wondering which kernel gets better battery life in CM7. I wanna try SavagedZen but I'm hesitant about the SBC. I know there are non-SBC versions though. How do those stack up?
Also, I'm using the new Destroyer ROM by Magnus, is his stock kernel any good?
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Well i think his kernel is the stock CM kernel, I personally use the Tiamat kernel and get nice battery life.
Thanks I've heard a lot of good things about SavagesZen, so I may try that. I'm still not sure if they were referring to the SBC version or not.
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I use savagedzen cfs sbc. I love it. My phone does not agree with bfs kernels.
I get good performance and battery life
swyped from my cyanogenized and gingerbreaded EVO
gmap516 said:
Thanks I've heard a lot of good things about SavagesZen, so I may try that. I'm still not sure if they were referring to the SBC version or not.
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Click to collapse
Most likely the sbc version cuz that's all they talk about now. Though when I used the kernel I had great battery life on the non-sbc with cfs and bfs versions.
What are bfs and cfs and what's the difference between the two?
I would try the SBC kernel but I'm using a third-party insurance plan, not sprint's thing, so I'm afraid to ruin the phone using SBC kernels.
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Update: OK, so I'm using savagedzen non-SBC CFS and so far my battery life seems great. does battery life vary greatly from one ROM to another if they're using the same kernel?
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well atm i am running an evo 4g with cm7 and i just switched my kernel to savaged zen and it's running great. my phone was rebooting on its own w/ the regular cm7 kernel i think its b/c i was using setcpu and people are saying it messes up cm7.
i was also wondering if anyone knew if i can use setcpu with cm7 and savaged as the kernel or if it's possible to make profiles on the cpu settings on cm7 i saw some1 post somewhere that you can but they never explained how.
Congrats on joining the kernel-flashing world, hope it treats you well.
I run CM7, and have found that SavagedZen tends to be faster than Tiamats... it just depends on your personal opinion, experiment as much as you want (just don't flash a Sense kernel on an AOSP ROM )
If you're using SavagedZen-1.0.1 CFS HAVS noSBC (the most recent SavagedZen kernel) then you don't need to use SetCPU, the HAVS (hybrid adaptive voltage scaling) and SetCPU would work against each other. HAVS works to tone down your CPU as needed and such.
To change your governor (the thing that manages your CPU), go to Settings - CyanogenMod settings - Performance - CPU settings.
Oh, and CFS stands for "Completely Fair Scheduler". It means that it doesn't let one program use up the a huge chunk of the CPU. It is good for an overall system and is supposed to have better battery life. BFS stands for "Brain F*** Scheduler. It gives the priority to foreground tasks. Think about gaming and whatever demanding programs you may use.
I use both, but the most commonly downloaded one is CFS (at least for SavagedZen)
Here's a link to explain kernels, this guy does a great job of explaining: http://forum.xda-developers.com/showthread.php?t=894880
twiz0r said:
I use savagedzen cfs sbc. I love it. My phone does not agree with bfs kernels.
I get good performance and battery life
swyped from my cyanogenized and gingerbreaded EVO
Click to expand...
Click to collapse
SavagedZen, hands down. No competition. My phone hates BFS kernels too....
so right now im running the savage zen bfs kernel. if i want to switch to the cfs kernel do i have to do a full wipe or just a cache and dalvik?
gilbydakid said:
so right now im running the savage zen bfs kernel. if i want to switch to the cfs kernel do i have to do a full wipe or just a cache and dalvik?
Click to expand...
Click to collapse
I would recommend the Tiamat kernel personally.
Also, just make a backup, and just wipe the cache and dalvik, then flash.
teh roxxorz said:
I would recommend the Tiamat kernel personally.
Also, just make a backup, and just wipe the cache and dalvik, then flash.
Click to expand...
Click to collapse
thanx for the info.
ill give the bfs and the tiamat kernel a shot. i feel like im turning into a flash whore. lol
gilbydakid said:
thanx for the info.
ill give the bfs and the tiamat kernel a shot. i feel like im turning into a flash whore. lol
Click to expand...
Click to collapse
Lol naw, you're just experimenting. Trying not to get bored right now cuz I don't have my evo >>.
I've mainly used Tiamat. Running the current version right now...3.3.3 no SBC. It seems responsive and I'm getting pretty good battery life. I will have to try SavagedZen sooner or later to see how it stacks up.
BFS kernels theoretically are supposed to give you better battery life, I used the cfs sbc savage zen and it was pretty good for speed; the bfs sbc savage zen gave me the better battery life. The only thing I can say I definitely noticed about bfs/cfs is that scrolling on bfs seems to be VERY choppy compared to cfs. No matter what profile you use on bfs the scrolling was still super choppy. So to confirm this I got back on cfs and scrolling overall was smooth as butter in cfs. Just to put this out there, I recently switched to the tiamat kernel and I'm seeing about a 15% battery increase (sounds like a little but that's a big deal) lol.
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So I did as suggested...
Backup
Clear cache/data
Flash Savage
But I was under the assumption that it'd only change the kernel, not the rom? So when it booted it was a stock/default flash. I restored to my backedup rom. Did I just negate the kernel flash?
solidwater said:
So I did as suggested...
Backup
Clear cache/data
Flash Savage
But I was under the assumption that it'd only change the kernel, not the rom? So when it booted it was a stock/default flash. I restored to my backedup rom. Did I just negate the kernel flash?
Click to expand...
Click to collapse
Lol yes you did.
twiz0r said:
I use savagedzen cfs sbc. I love it. My phone does not agree with bfs kernels.
I get good performance and battery life
swyped from my cyanogenized and gingerbreaded EVO
Click to expand...
Click to collapse
How did you get Swype to work?
LeonDuhaney said:
How did you get Swype to work?
Click to expand...
Click to collapse
Swype works fine if you have beta access from the actual site. Most of the APK files of swype flying around have expired because they released another beta version not too long ago. I believe 2.29 is the latest. I could be wrong about the number.
Sent from my EVO ;-) XDA Premium App

[Q] Started with Sprint Lovers, now what?

So I ended up with the Sprint Lovers ROM on my phone via the Autoroot method.
It has been great so far, battery life is tons better, but it isnt perfect. I find it laggy at times.
So, my question is, where should I go from here? What would be a good ROM to transition to? Seems like Fresh, Warm 2.2, and EViO are some of the more recommended ROMs.
I am also liking what I believe is the look of vanilla android. At least, the set-up I see on the Nexus phones. That being said, what does everyone recommend for ROMs of that style?
Gingerbread- CM7 w/ Tiamat kernel
Sense- King's Ultra or Myn's w/ a net-archy kernel
cm7, its lovely
Try every single one. It's like getting a new phone every week or however often you flash.
Cm7 or my new home; salvage mod 1.1
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teh roxxorz said:
Gingerbread- CM7 w/ Tiamat kernel
Sense- King's Ultra or Myn's w/ a net-archy kernel
Click to expand...
Click to collapse
Warning: trying cm7 will cause a visual orgasm. There I said it.
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MIUI. The only thing I wish was that it had 4g. If you can find the version before the most recent, I would go with that.
if u love sense based rom, then u will love sense 2.0 based rom
try Warm Z or recently released MikZ
Yes, Sense 2.0 is much better if you can live without 4g. I would recommend trying Warm RLS5, Warm Z, MikFroyo, Kings Unleashed, VaelPak, Miui and CM7 or variant of.
Myn's Warm Z is to die for.
Koni's new elite 3 is off the chain. Nets 4.3 bfs more haves sbc= all day fun.
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Vaelpak has had me drooling on my screen every night. I love CM7, but the GPS bug kills me.=[ Oh Warm Two Point Two is awesome too but it doesn't float my boat when it comes to gaming. Even with a netarchy kernel. =\
Sent From My E\/o - \/aelpak 3.2
If you like Sense and the way that Sprint Lovers in general operates, I'd say there's no reason to switch out to a completely different ROM. Just get a new kernel, the netarchy kernels are pretty nice in my experience. And then just set up SetCPU for some overclocking fun.
At least that's what I did, but I'm really very particular in how I want my rom to look and work. If you're more open minded, then there's no reason to not go out and try different roms like the ones recommended above.
CM7, just do the REALLY simple GPS fix beforehand. It's beaten like a dead horse in the nightly thread. Then flash it and you'll never want to go back to sense.
Agreed on vaelpak. Flashed 6 roms in 5 days. Have kept vaelpak for 2 weeks since then.
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definitely cm7
How does a ROM help battery life? Mine SUCKS! Won't last an 8 hour shift with mild use. I'm on the SprintLovers ROM from UAR. I bought the Sedio Extended battery and it's only mildly better with more bulk. What gives??
You need to flash a custom kernel till you find the rite fit for your phone. I use nets 4.3 sbc more havs and with the 3500 extended battery I can get a little over 24 hours with heavy use.
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mikel719 said:
I use nets 4.3 sbc more havs and with the 3500 extended battery I can get a little over 24 hours with heavy use.
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Click to collapse
Explain that please. I'll find and figure out flashing the kernal, but what does "more havs" mean? Misspell? Just making sure I'm not missing an acronym. There's no way my battery will last 24. You have the Sedio?
hockeyfreak said:
Explain that please. I'll find and figure out flashing the kernal, but what does "more havs" mean? Misspell? Just making sure I'm not missing an acronym. There's no way my battery will last 24. You have the Sedio?
Click to expand...
Click to collapse
This link will explain everything you need to know about kernels with more havs, less havs, sbc, no sbc, it should help you a lot. I get 24 hours plus with heavy usage. I have the sedio 3500 mah battery.
http://forum.xda-developers.com/showthread.php?t=894880
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hockeyfreak said:
Explain that please. I'll find and figure out flashing the kernal, but what does "more havs" mean? Misspell? Just making sure I'm not missing an acronym. There's no way my battery will last 24. You have the Sedio?
Click to expand...
Click to collapse
I can get over 24 hours on my stock battery...~28hrs.

Kernel help!

I just rooted my phone. And I was wondering if anyone knew of the best sense romd abs kernels for battery life on my Evo. If so could you post a link. Thank you so much
I would recommend that you stick with the default kernel that comes with a custom rom for at least 2 days. Oftentimes, you will find that the speed and battery life is very good. Having said that, I recommend Myn's Warm TwoPointTwo RLS5 with either the default kernel #15 or one of Netarchy kernels, specifically the one listed in my signature.
UPDATE: The link to RLS5 is http://goo.gl/9Mjn and for the Netarchy kernels, it's http://goo.gl/wXQt
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Personally, I recommend CM7 Final, with the Tiamat kernel.
teh roxxorz said:
Personally, I recommend CM7 Final, with the Tiamat kernel.
Click to expand...
Click to collapse
Good choice, but remember, he asked for recommendations regarding Sense-based roms and kernels....
posting & replying via the XDA Premium app
Best is relative. If you're new, try at least Miui, CM7, VaelPak, WarmZ and some sense ROMs (Warm, MikFroyo, Unleashed, EViO, etc).
Kernels take a couple days to settle in and vary from phone to phone as far as how well they work, so try out a few for a couple days each and see what works best.
jstalford said:
Best is relative. If you're new, try at least Miui, CM7, VaelPak, WarmZ and some sense ROMs (Warm, MikFroyo, Unleashed, EViO, etc)...
Click to expand...
Click to collapse
+1.....Outstanding suggestions.
posting & replying via the XDA Premium app
I rooted my phone for about a week, and the battery life is getting worst from when I first rooted it.i like sense because it's simple and i just need a rom or kernel that would allow my phone to work for a day and half with moderate use.
oehwarieme said:
I rooted my phone for about a week, and the battery life is getting worst from when I first rooted it.i like sense because it's simple and i just need a rom or kernel that would allow my phone to work for a day and half with moderate use.
Click to expand...
Click to collapse
Are you certain you don't have a wakelock issue? If you haven't tried it, flash radio 09.01 and PRI 1.77. Battery life is very good with that combination.
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dougjamal said:
Good choice, but remember, he asked for recommendations regarding Sense-based roms and kernels....
posting & replying via the XDA Premium app
Click to expand...
Click to collapse
I'ma have to reset my browser cuz words are missing on the page, but only on xda...awkward.

[Q] Best Kernel for EVO running CM7

I flashed CM 7 a while back and love it, but as always I feel as though I'm not getting the best battery life. With moderate use I'm lucky not to have to plug it in halfway through the day.
Any good kernel recommendations for good battery life? I'm testing SavagedZen's kernel and using it's governor currently. I find it to have excellent life while the phones asleep, but it's a battery hog when I'm using the phone.
GoDm0dE has done wonders for my battery life! Your mileage may vary as all EVO's seem to be slightly different.
Im having a great exp with SZ 2.1.0. Try using the BFS version of the latest savagezen; As to me it seems the savagezen governor works best with their rom versus cm7(if that's what ur using). I personally run conservative or ondemand with a max of 1113 and 245 min. You could also try the new toast godmode kernel! Here's some general info I think you might find helpful.
http://forum.xda-developers.com/showthread.php?t=894880
I've tried a million different kernals and personally I think CM7 just still has some battery issues to work out.
What has become a frustration of mine is that I continually get different results with the same items. In other words. Some days I'll be using the same kernal and ROM release and even the same programs and my battery will disolve right before my eyes while sudden then I'll get great battery life for a day or two.
Personaly I think it has something to do with 3g and wifi issues, because I seem to have random issues with those as well . . . but I don't know enough about all this to back that up with anything more than anecdotal observation.
CM7 + Timat Kernel = EPIC WIN.
If you flash, only use version 3.3.7 or 3.3.8 as 4.0.0 is breaking some cameras.
Toastcfh's GoDm0dE Kernel gets my vote, and that's coming from Tiamat 3.3.8 with the -100mv script from Viperboy. The Godmode kernel is by FAR much smoother and has gotten me better battery life. Toastcfh works on Cyanogenmod so you know it'll run well with CM7
teh roxxorz said:
CM7 + Timat Kernel = EPIC WIN.
If you flash, only use version 3.3.7 or 3.3.8 as 4.0.0 is breaking some cameras.
Click to expand...
Click to collapse
I'm getting the best battery life from this combo, using 3.3.8
I just started using CM7 last week and also love it.
Image give God mode a shot n see how that works out....if not ill go back to tiamat until they fix the issue's wit the 4.0
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dirkyd3rk said:
Im having a great exp with SZ 2.1.0. Try using the BFS version of the latest savagezen; As to me it seems the savagezen governor works best with their rom versus cm7(if that's what ur using). I personally run conservative or ondemand with a max of 1113 and 245 min. You could also try the new toast godmode kernel! Here's some general info I think you might find helpful.
http://forum.xda-developers.com/showthread.php?t=894880
Click to expand...
Click to collapse
Cool link bro
cm7 -gOdMoDe-245/1113
X2
Tiamat 3.3.7sbc w viperboy...what kind of battery do you have?
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Not sure if this helps anyone, but running godmode at 245/1113 vs tiamat at 245/1267, performance governor on both, I benchmark much better on godmode. I know there's a lot more to consider than that but with a lower clock it surprised me how well godmode did. IIRC I got 1333 on quadrant.
Can anyone point me in the direction where I can find the original CM7 kernel to have on hand to switch back to should I so desire? I want to play with some other kernels, but I always like to have the original sitting by just in case, ya know? Currently running CM nightlys with 2.6.37.6-cyanogenmod-01504-gdc28eac [email protected] #1
Any input would be welcomed (ok, any constructive input hah)
lc3necro said:
Can anyone point me in the direction where I can find the original CM7 kernel to have on hand to switch back to should I so desire? I want to play with some other kernels, but I always like to have the original sitting by just in case, ya know? Currently running CM nightlys with 2.6.37.6-cyanogenmod-01504-gdc28eac [email protected] #1
Any input would be welcomed (ok, any constructive input hah)
Click to expand...
Click to collapse
Kernel manager app
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Tiamat has a nice kernel with the sbc added to it. I get around 16-20hrs on moderate use with it.
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I tried kernel manager, but whenever I try to DL a kernel it pauses then drops me back at the kernel selection screen. All I really want is the current CM / CM nightly kernel(s) so that I can try Tiamat or some of the others but still have a fail safe to drop back to without flashing a whole ROM...sighs
lc3necro said:
I tried kernel manager, but whenever I try to DL a kernel it pauses then drops me back at the kernel selection screen. All I really want is the current CM / CM nightly kernel(s) so that I can try Tiamat or some of the others but still have a fail safe to drop back to without flashing a whole ROM...sighs
Click to expand...
Click to collapse
Then go to tiamat website
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bootny said:
Then go to tiamat website
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Click to expand...
Click to collapse
Yeah, I have the tiamat kernel...what I cannot seem to find anywhere, XDA, CM forums, way too much google digging, is the CM kernel to fall back to if I do not like the results I get with tiamat.
To sum it up...
What I have:
Tiamat, Savage, godmode, and every other custom kernel...but CM
What I am seeking:
CM kernel in flashable form, and if kernel manager is the magical answer, can someone PM me and you can email it to me since the manager fails to work for me?
lc3necro said:
Yeah, I have the tiamat kernel...what I cannot seem to find anywhere, XDA, CM forums, way too much google digging, is the CM kernel to fall back to if I do not like the results I get with tiamat.
To sum it up...
What I have:
Tiamat, Savage, godmode, and every other custom kernel...but CM
What I am seeking:
CM kernel in flashable form, and if kernel manager is the magical answer, can someone PM me and you can email it to me since the manager fails to work for me?
Click to expand...
Click to collapse
Just reflash the rom.
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