Develop Bugs

Rom and kernel help!!!

I'm in a dilemma! For the last week I've been hunting around to find the right combination of Kernels and Roms. Natively I'm a CM ASOP man. But I've tried everything from CM to MIUI to Ava to Mym. None of the roms are giving a decent amount of battery life. I've tried several combinations of Kernels also. My battery life has been as terrible as 3 hours. I'm talking about losing a percent every minute!
I didn't buy an extended battery. But I have tried a brand new regular battery to make sure that I didn't have a bad battery. Both batteries have the same results under all combinations of Kernels and Roms.
I've seen members braggin on having 12 to 18th hours of life under heavy use! How is that possible!? Lol! I know it has to do with device, kernel, rom combinations.
Can the awsome members of the GREAT Xda please help me out? Point me in the right direction. fyi: I have a ver 003 device and also I don't overclock much at all but I underclock to try and save a lil juice!
Thanks in advanced!
Sent from my PC36100 using Tapatalk

No matter what rom/kernel combination I run I get really ****ty battery life with the stock red HTC battery. For me personally investing the $70 or so for the Seidio extended battery on Amazon was worthwhile. I also purchased their wall charger as well.
I'm not going to blow smoke up your ass and say that the battery last 2 days with heavy use because thats BS. However, with heavy use (running emulators, gmail sync, occasional bluetooth for wii mote, texting, web browsing, etc) I can get through a 9 hour work day with a lil life to spare.

At least go on amazon and get a1800 mah battery. They are cheap but goood.
Sent from my PC36100 using XDA App

I just bought another stock battery and a wall charger, I keep the spare in my wallet and battery life is a non issue now.
Check out batteryboss.org before buying an aftermarket one though, most of them are rips offs.

I'm not sure about rip offs on amazon but certainly ebay..i bought two batteries w/a charger for $25..and a third one since my oem battery took a bath, fully charged.
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I'm going to research some better batteries. I appreciate the intel. But my thing is I know I can get a few more hours of battery time with a simple kernel modification. Loosing 1% a minute is unheard of lol. Like now: I had 100% when I started this reply and I'm officially at 95% as I press Submit lol! Terrible
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DonSolo said:
I'm going to research some better batteries. I appreciate the intel. But my thing is I know I can get a few more hours of battery time with a simple kernel modification. Loosing 1% a minute is unheard of lol. Like now: I had 100% when I started this reply and I'm officially at 95% as I press Submit lol! Terrible
Sent from my PC36100 using Tapatalk
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You should see if you can get a replacement battery from sprint. I am using CM7 nightly 24, and can easily sustain 24+ hours with the OEM red battery.
Everyone will have different results even with the same rom/kernel, however the drain that your experiencing does sound like your battery might be going bad.

Khilbron said:
You should see if you can get a replacement battery from sprint. I am using CM7 nightly 24, and can easily sustain 24+ hours with the OEM red battery.
Everyone will have different results even with the same rom/kernel, however the drain that your experiencing does sound like your battery might be going bad.
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I see your stats and that sh*t is wicked! I used CM7 and that one drains the quickest lol.... before I cash out on a new extended battery where's an abundant source of Kernels? I've tried three and I wanted to do a little process of elimination before I pull out my visa lol
Sent from my PC36100 using Tapatalk

There aren't very many CM7 kernel's available yet, so few that I can't even begin to tell you where to start looking, for Sense roms though, search for Netarchy those kernels work really well.

I see... I appreciate that! Imma give Mym a try with a few of them Kernels. Thanks again for the help
And what exactly is the Kernel that you are using!? Lol
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Honestly, I've found that the right kernel makes the biggest difference and setcpu, juicedefender, etc only make it worse. For me (also 003 hw) kings kernel and htc # 15 uv have been best. I've had great success with azrael and vaelpak roms. Currently on vaelpak with kings # 11 with NO battery saving apps. I get 24 hours with my regular use. Yesterday was very light, I went 24 hours with just under 50% left.
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(btw, that is on a stock battery, approx 5 months old)
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ms79723 said:
AOSP Builds
v7
12/25/10 - SBC for BC's Kernel SBC-bcnice-stable-v7.zip (2.62 MB)
This is what I'm currently using at the moment. So this gets all the updates as of right now.
v8-BETA
12/25/10 - SBC for BC's Kernel SBC-bcnice-stable-v8.zip (2.62 MB)
This is what I've been testing for a while. This build contains auto bump charging based on the voltage as opposed to the full charge method. I don't know how it works on extended batteries yet...but works pretty good on stock batteries. With this, you should have a better chance of picking up the phone at higher voltages.
Check out Savaged-Zen![/CENTER]
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Click to collapse
I flashed the ver 8 with CM6. 1.2. so far I've gotten slightly better battery life. 20 minutes and I'm still on 99%. That's a whole lot better than losing 1% a minute lol! I'm still going to do another exhaustive research to pinpoint the best combination!
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I know you guys said that setcpu can make matters worse. Is it alright if I use it to underclock to 245x245 when the screen is off and if the battery ever goes over 110°F automatically? That's the only profiles i use to help with battery maintenance
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DonSolo said:
I know you guys said that setcpu can make matters worse. Is it alright if I use it to underclock to 245x245 when the screen is off and if the battery ever goes over 110°F automatically? That's the only profiles i use to help with battery maintenance
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If your still using CM7, it has its own built in setCPU, I have mine set to ondemand 245min, 768max, and sorry for the delayed response, I went to lunch, however the Kernel I am using for my CM7 flash is just the stock kernel that comes with the initial build if CM7.

Khilbron said:
If your still using CM7, it has its own built in setCPU, I have mine set to ondemand 245min, 768max, and sorry for the delayed response, I went to lunch, however the Kernel I am using for my CM7 flash is just the stock kernel that comes with the initial build if CM7.
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OK I gotcha. One last thing and I'm finished bugging lol. I never knew exactly what the preset governors main jobs were and the differences between them. Which one is best for power saving?
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Underclocking question?

Does anyone have any problems on the evo? I am currently running myn's warm rls 5 w netarchy latest cfs, no havs, no uv, no sbc. So far it has been pretty decent. I am using it as I type. Are there any ways to test benchmark statistics wise what is too low for the evo. My current 1152 cons setting gets me in the 40s hr use wifi at home and a full time job. Whats your experiences w similar?
Sent from my warm EVO

stkiswr said:
Does anyone have any problems on the evo? I am currently running myn's warm rls 5 w netarchy latest cfs, no havs, no uv, no sbc. So far it has been pretty decent. I am using it as I type. Are there any ways to test benchmark statistics wise what is too low for the evo. My current 1152 cons setting gets me in the 40s hr use wifi at home and a full time job. Whats your experiences w similar?
Sent from my warm EVO
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If I read your post right... you are getting 40hrs of use from your phone with a single charge and its overclocked?...
Sorry.. I don't believe you. Not unless you don't use the thing at all. Are you on a 3500mah battery too?.
The only time I have ever gotten my phone even close to 40grs was with 4g and wifi off and barely used it at all... and by "even close" i mean about 29hrs

Well, that's your opinion. I spend 18 to 20 hours away from wifi and the rest around 12m internet. It stayed off the charger and lost 3% in 9 hours last night. 35 to 40 is my avg. I have made it 60 once but I was around my wifi all weekend. I was just asking if anyone has had issues underclocking the snapdragon.
Sent from my warm EVO

Oh, OK, so you barely used it, got it.
And underclocking, never found any advantage at all. I seem to get better battery not using any over or underclocking.

Well, I am using it lol. I am at work now. I have freedom at my job to use it an keep it w me. I have spent a lot of time flashing and dialing these roms and kernels to my liking and have great battery life now. Thanks for letting me know ur experience on underclocking. I didnt start this post to make mine seem amazing lmao I just started it to hear other experiences. I also had to revert to 1.77 nv/pri because I had 100% wake time. Since then it's been nice and stable.
Sent from my warm EVO

Forgot that I am also using siedio 3500 for last 3 months
Sent from my warm EVO

CM7 Kernel suggestions?

Hey all, I was wondering if anybody had any suggestions for a kernel that is good for battery life. I am running the stable release of CM7 and I have the OEM extended battery (came with the phone when I bought it) and I currently can get about 1.5 days of moderate use (wifi turned on whenever available, frequent twitter/facebook/foursquare updates, heavy texting/emailing and moderate web browsing) but I am always open to new options for improved battery life.
The kernel I have now is underclocked by about half and I find that helps a lot (if I remember correctly, it is the stock kernel).

Best kernel in my opinion for AOSP is Tiamat: http://tiamat-aosp.com

I am somewhat new to the non-stock rom/kernel game but have the latest version of incredikernel with CM7 stable and really like the combo so far
The stock CM7 kernel had lower wifi performance for me with Incredikernel it is back where it should be

scook9 said:
I am somewhat new to the non-stock rom/kernel game but have the latest version of incredikernel with CM7 stable and really like the combo so far
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Agreed. Incredikernel FTW.
Flash the lower voltages to get even better battery life. If your phone can take them without rebooting often then you'll get a significant increase in battery life while maintaining the same CPU power.

2.6.37.6-incredikernel is working phenomenally for me

Incredikernel is the best I've found on any aosp rom. Awesome battery life.
Sent from my Incredible using XDA App

POQbum said:
Agreed. Incredikernel FTW.
Flash the lower voltages to get even better battery life. If your phone can take them without rebooting often then you'll get a significant increase in battery life while maintaining the same CPU power.
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Curious, is there a guide or instructions on how to flash the lower voltages. I've checked out Chad's thread and it confuses me.

Incredikernel FTW
I went with Incredikernel. So far so good, it's been off the charger for about 13-14 hours now and it's at 82% battery. Wifi and GPS both turned on with a decent amount of texting/email checking and a little web browsing. It is underclocked about half way with SetCPU and still very snappy and responsive. Definitely happier with my phone than ever before.

Incredikernel is what my friend uses and he loves it.

Also wanted to add I have heard good things about Tiamat as well, another one you couldnt go wrong with.

Best ROM for battery life

I need opinions, anyone?
I keep flashing different ROMS and the battery has always had bad life
I've done a lot of different methods to fix battery life issues, but no go.

Having good luck with Swagged Out Stock.
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A lot of people say AOSP ROMs are good on battery life cuz the sense is gone.
Try out Xplod RLS (one of my favs) test it out see how it goes for you. It's an AOSP btw.
For sense I recommend Tommytomatoes Classic v0.0.0.4 its awesome!

How long does your battery last? Are you running mobile data all day? GPS?
I can get around 20-24 hours put of my battery with real heavy usage. Around 2 days with normal use.
I keep my 3g and everything off until i need it.
HTC EVO 4G running Mikg 2.58

Don't know who your talkin too but I'll reply lol
On Classic I'm gettin roughly about 1d 19h 43m with pretty decent usage text, call, xda, browsing jus putting it to charge right now

I have always had the best success with AOSP and custom kernel.
Currently running ICSmod7 with latest tiamets. With 4g it drops fast but without I get through a full day no worries medium use. Text, fb, music during workout ect...
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Getting good battery life with MikG 2.61.

mikg rom to me is best for battery life .and very stable rom and clean so try and let us know .im running miui and battery life is pretty good but not as good as my mikg rom

sense-free
I've been experimenting with ROMs and kernels for the last 18 months, always looking for best battery life with regular to heavy use. A good custom kernel will sometimes give you an extra 10-15 %. Using setCPU or another app like systemtuner (my pref) to turn CPU down while screen off can also give you 5-10%. Far and away the best thing for my battery is to use an alternative launcher (ADW for me) and then use Titanium backup pro or systemtuner to freeze sense. you just find the two elements in the process list that start with "HTC sense" and freeze them. Night and day. FYI I run synergy and have always come back to Myn's ROMs cause they are good for battery from the start, but they also take well to pretty much any custom kernel, which isn't true for all ROMs. I like everything to work so I always ditch AOSP ROMs a few days after trying them.

sam9696 said:
I've been experimenting with ROMs and kernels for the last 18 months, always looking for best battery life with regular to heavy use. A good custom kernel will sometimes give you an extra 10-15 %. Using setCPU or another app like systemtuner (my pref) to turn CPU down while screen off can also give you 5-10%. Far and away the best thing for my battery is to use an alternative launcher (ADW for me) and then use Titanium backup pro or systemtuner to freeze sense. you just find the two elements in the process list that start with "HTC sense" and freeze them. Night and day. FYI I run synergy and have always come back to Myn's ROMs cause they are good for battery from the start, but they also take well to pretty much any custom kernel, which isn't true for all ROMs. I like everything to work so I always ditch AOSP ROMs a few days after trying them.
Click to expand...
Click to collapse
Underclocking your CPU typically causes higher battery drain... unless you're overclocking. As long as nothing is really hammering the CPU in the background (which is the problem, not the CPU speed!), then it's better to let the CPU enter higher power states in order to finish the work quicker and return to low power sleep state. Intel calls this HUGI (Hurry Up and Get Idle). Overclocking can have bad effects with HUGI due to the higher voltage required to run at those frequencies. Lol'd at your AOSP comment though. I suppose some people are okay with subpar android, aka sense .
My Evo can last a week on a single charge. CM7.1, 1850 mAh aftermarket battery (slim, stock battery cover), Tiamat 4.1.0 kernel, aggressive undervolting and monitoring of wakelocks combined with 90% wifi usage (3g is the #1 source of battery drain!).
Sent from my Transformer TF101

Tommytomatoes The Classic is a solid sense rom with good battery life its fast as hell, has lots of mods and themes and is pretty sick I've been stuck on it for over a month now I've flashed other roms but always come back to the classic after a few hours
Sent from my Classic-EViLizED-ToMAToFiED-EVo4g-

maybe a dumb question. What is the difference between underclocking and undervolting?
Gary13579 said:
Underclocking your CPU typically causes higher battery drain... unless you're overclocking. As long as nothing is really hammering the CPU in the background (which is the problem, not the CPU speed!), then it's better to let the CPU enter higher power states in order to finish the work quicker and return to low power sleep state. Intel calls this HUGI (Hurry Up and Get Idle). Overclocking can have bad effects with HUGI due to the higher voltage required to run at those frequencies. Lol'd at your AOSP comment though. I suppose some people are okay with subpar android, aka sense .
My Evo can last a week on a single charge. CM7.1, 1850 mAh aftermarket battery (slim, stock battery cover), Tiamat 4.1.0 kernel, aggressive undervolting and monitoring of wakelocks combined with 90% wifi usage (3g is the #1 source of battery drain!).
Sent from my Transformer TF101
Click to expand...
Click to collapse

Underclocking is when you set the speed of the processor to a lower setting than the stock clocks where as undervolting is lowering the voltage needed to run it at a certain speed be it stock underclocked or overclocked. Simplest way I understand it.
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Real culprit for batt issues
Has anyone ever bothered to understand that theres a pesty bug no one knew of.. Called CIQ "carrier IQ"
Ya this is one of the main reasons behind bad batt.. Sprint and other carriers allow a company to monitor and chart everything we do and it mirrors off txts and data sent and is designed to pick up on.key words... Basically an Invasive tracking monitor. It's a huge in noticed drain... And its been shown to be removed from system/app in many custom roms. But it never does cause its so strattled throughout the OS.
Sent from my PC36100 using XDA Premium App

IMPuLSe EX said:
I need opinions, anyone?
I keep flashing different ROMS and the battery has always had bad life
I've done a lot of different methods to fix battery life issues, but no go.
Click to expand...
Click to collapse
I have been using evodeck v1.3 with the lee kernel and the rom just sips on my battery and gives me outstanding battery life with amazing speeds

lojak29 said:
Has anyone ever bothered to understand that theres a pesty bug no one knew of.. Called CIQ "carrier IQ"
Ya this is one of the main reasons behind bad batt.. Sprint and other carriers allow a company to monitor and chart everything we do and it mirrors off txts and data sent and is designed to pick up on.key words... Basically an Invasive tracking monitor. It's a huge in noticed drain... And its been shown to be removed from system/app in many custom roms. But it never does cause its so strattled throughout the OS.
Sent from my PC36100 using XDA Premium App
Click to expand...
Click to collapse
"no one knew of" are you kidding me? Carrier IQ has been known about for at least a year now... and no, it's not responsible for any significant amount of battery drain...
Sent from my Transformer TF101

Definantly aosp in my experience. Cm7 gets my vote for battery life

Gary13579 said:
Underclocking your CPU typically causes higher battery drain... unless you're overclocking. As long as nothing is really hammering the CPU in the background (which is the problem, not the CPU speed!), then it's better to let the CPU enter higher power states in order to finish the work quicker and return to low power sleep state. Intel calls this HUGI (Hurry Up and Get Idle). Overclocking can have bad effects with HUGI due to the higher voltage required to run at those frequencies. Lol'd at your AOSP comment though. I suppose some people are okay with subpar android, aka sense .
My Evo can last a week on a single charge. CM7.1, 1850 mAh aftermarket battery (slim, stock battery cover), Tiamat 4.1.0 kernel, aggressive undervolting and monitoring of wakelocks combined with 90% wifi usage (3g is the #1 source of battery drain!).
Sent from my Transformer TF101
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Click to collapse
So you clearly don't talk on the phone at all.
Sent from my PC36100 using XDA App

alaman68 said:
So you clearly don't talk on the phone at all.
Sent from my PC36100 using XDA App
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Ah yes, the people that come in arguing and debating my claims. This happens every time. I use my phone quite often, and still get amazing battery life.
Sent from my Transformer TF101

Gary13579 said:
Ah yes, the people that come in arguing and debating my claims. This happens every time. I use my phone quite often, and still get amazing battery life.
Sent from my Transformer TF101
Click to expand...
Click to collapse
Dude you have a serious problem I honestly think you need to quit thinking people are attacking you this is the 3rd time I've seen you in a thread that I'm in and not once have I seen you post anything good or helpful I honestly think you should refrain from posting that's my opinion only cause I think your on a kid level and you really can't carry an easy conversation with someone sometimes I wonder if you even have this phone and if your trolling EVO Forum instead of the Transformer Forum.
TrevE Supporter!
If you like being on this site everyday!
I suggest you click this link a fill it out!
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Then HIT THE THANKS!

Need best battery rom. NEED TO KNOW BY 9a.m.

Right. So a friend of my friend made me root his phone a while back and I threw mikg 2.52 on it and all was good. Now the guy contacted me today and said his battery life was in the crapper and wants me to change it to something more battery life favored since he isn't by a charger for a long time throughout the day. And since I have been using the new ics roms and jumping back and forth often I don't really know what to give him now.
So what's your opinions? I need something stable as a rock and best battery possible. I need this to last him a while since I almost never see this guy... Haha
P.s. I know people hate these kind of post. Just bear with me here because I'm meeting this guy tomorrow morning and have to know what I should flash for him. Also no aosp please.
Sent from my PC36100 using xda premium

You could have him try the one in your sig. It gave me great battery life when I used it, but as always, YMMV. You really have to try them out and see which gives the best battery life for you.
Also could try apps like Juice Defender or similar that aim to optimize battery life.

The only rom i can think of that ive used that doesnt drain your battery would be cm7 or decks gb. Ive used it myself & ive seen good battery life even with my cpu overclocked.

Does it work on viper rom? V2 redline? Thanks! Please let me know

I have the latest MIUI by Swiper, and since 2.2.6, my battery life has been phenomenal with Tiamat kernel 4.1.0, Car-O-Dope tweaks and Vipermod -50.
Phenomenal as in comes off the charger at 6AM and when I get home from work at 5, it's still over 80%

HipKat said:
I have the latest MIUI by Swiper, and since 2.2.6, my battery life has been phenomenal with Tiamat kernel 4.1.0, Car-O-Dope tweaks and Vipermod -50.
Phenomenal as in comes off the charger at 6AM and when I get home from work at 5, it's still over 80%
Click to expand...
Click to collapse
I can confirm this.. ALthough I use 2.3.2 b1 and 3.3.7 sbc kernel as I had some reboot issues with 4.1.0 but yeah.. I'm still at 100 percent at 11:00 am (work at 8).. come home and still at 90. go to bed and hit the charger right above 80. It's unreal.. I consider myself a heavy user too... email,sms,phone calls... etc.

I am currently using Swiper's 2.3.2 b1 with 3.3.7 sbc and have not run into any issues. Battery life is great with this combination for me. Also, keep in mind that I do not run many widgets except an calendar agenda widget.

Myn's Warm series rom's always gave me the best battery life.

i use energy sense 3.5 rom with anthrax kernel. iv had decent battery life w it. about 14 hours or so w moderate use and in and out of roam looking for signal. from what iv read CM7 and MIUI roms are much better with battery life than sense roms. they also seem to be more customizable.

xsisbest said:
I can confirm this.. ALthough I use 2.3.2 b1 and 3.3.7 sbc kernel as I had some reboot issues with 4.1.0 but yeah.. I'm still at 100 percent at 11:00 am (work at 8).. come home and still at 90. go to bed and hit the charger right above 80. It's unreal.. I consider myself a heavy user too... email,sms,phone calls... etc.
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Click to collapse
80% at night with heavy use throughout the entire day? I can't believe that. Screenshot? If someone else can validate this, I might try the rom with LEE kernel.
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He did mention no AOSP (although AOSP really does have the best battery life IMHO)
Koni's Elite Series III combined with netarchy-toastmod HAVS-less had decent battery life, only issue is that was a Froyo build.
kluster1999: I agree, pic would be awesome.

I don't mean to sound rude, but different ROM and kernel combinations can only make so much of a difference. I'm skeptical of claims of amazing battery life with heavy usage because in the end, the battery is still the same size and the large screen still draws a lot of power.

Been having great Battery life with "The Exress" using" Lionfish more" kernnal and smurfed out....