Develop Bugs

Kernel issues

What would you say is the best battery saving kernel? I need to go a days worth of battery , and I use my phone heavily.
I use jd mod 102310.
I'm currently testing kings cfs#8 but its dying fast why? I just loaded the rom after a full charge.
How long will the battery life start to kick in?
Please help me.
Advice is needed.
Sent From My HTC EVO

Check these threads:
http://forum.xda-developers.com/showthread.php?t=820673
http://forum.xda-developers.com/showthread.php?p=8908771#post8908771

The funny thing about kernels is that it changes from phone to phone, I may get the best battery life with kings#9 and it might drain you're phone faster than there before.... I use calks 1.4 with kk#9 and I'm getting the best battery life I've ever seen with the evo. Else check to see if ur phone is sleeping properly.
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I don't expect to convince anyone to go back to stock, but the newer ota updates and roms have fantastic battery life. I can't say that I have noticed any difference in battery life with the 3.30 but I haven't taken he time to observe. But 3.29 was a big improvement, or so it seemed.
I go about 40 before charging. And I'm a heavy user.
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Pbrussell said:
The funny thing about kernels is that it changes from phone to phone, I may get the best battery life with kings#9 and it might drain you're phone faster than there before.... I use calks 1.4 with kk#9 and I'm getting the best battery life I've ever seen with the evo. Else check to see if ur phone is sleeping properly.
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Click to expand...
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what kind of numbers are you getting??

MYN's 2.2 rls 3

Anyone found out what kernel works best with it for battery life. The kernel it comes with isn't that great on battery life. Sorry if this was already posted.
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Unfortunately, there are no definitives, and if you aren't getting good battery life with the stock kernel with warm2.2, you might want to start looking at some battery tweaks.
There is a thread over in the Evo 4g General forum, the title is "2.2 ultimate kernel review :: Updated 11/6/10" and the OP is skydeaner. His site also has one of the battery "fixes" if its not holding a charge correctly.
Unfortunately, I can't link to it, since I'm still a newbie poster, but, some of the higher rated ones are Kings #11, and the new Net 4.2 kernels.

phajen said:
Unfortunately, there are no definitives, and if you aren't getting good battery life with the stock kernel with warm2.2, you might want to start looking at some battery tweaks.
There is a thread over in the Evo 4g General forum, the title is "2.2 ultimate kernel review :: Updated 11/6/10" and the OP is skydeaner. His site also has one of the battery "fixes" if its not holding a charge correctly.
Unfortunately, I can't link to it, since I'm still a newbie poster, but, some of the higher rated ones are Kings #11, and the new Net 4.2 kernels.
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Thanks I just downloaded kings 11 & net 4.1.9 stable I'll try 4.2 also
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Im having good luck so far with Nets 4.2.1 CFS more aggressive smartass universal.
There were a lot of people complaining about the awake time of the 4.2 build, so Net tried to tweak the 4.2.1 to have the great sleep time of 42 with the great awake time of 4.1.9
I havent had the phone awake alot today but with light use I have gone from 100% at 8 am to..... 75% at 10:30pm This was no browsing or games, just phone for about 5-10 minutes and maybe 5 minutes of texting only 1.25 hrs awake time total so far.... so very light use today. But ive NEVER had the phone stay 75-80% inot the evening.
I REALLY hope the awake performance is as good as the sleep performance. We'll see how it does tomorrow under some stress.

bigd2442 said:
Im having good luck so far with Nets 4.2.1 CFS more aggressive smartass universal.
There were a lot of people complaining about the awake time of the 4.2 build, so Net tried to tweak the 4.2.1 to have the great sleep time of 42 with the great awake time of 4.1.9
I havent had the phone awake alot today but with light use I have gone from 100% at 8 am to..... 75% at 10:30pm This was no browsing or games, just phone for about 5-10 minutes and maybe 5 minutes of texting only 1.25 hrs awake time total so far.... so very light use today. But ive NEVER had the phone stay 75-80% inot the evening.
I REALLY hope the awake performance is as good as the sleep performance. We'll see how it does tomorrow under some stress.
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Thanks a lot
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Just for a baseline, I just put my phone back to root to take it back, I've lost 50% over about 26 hours of moderate texting and usage with just JuiceDefender running.

I have Kings #11 and my battery blows. I drain 25% in less than an hour with moderate use. This is off topic but when you enable your 4G does it automatically turn off on you. I think my 4G is broken and just want to know. I may need to reflash it.

im runnin it with stock kernal and i have no complaints. I just took a screenshot showing like 43% left off charger for 14 hours and talk time was like 1hour and 23 mins. Plus iv used it to play mabey half hour of games and half dozen text. Il see if i can get the ss posted.

phajen said:
Just for a baseline, I just put my phone back to root to take it back, I've lost 50% over about 26 hours of moderate texting and usage with just JuiceDefender running.
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I'll install juice defender and see how it works
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gqstatus0685 said:
I have Kings #11 and my battery blows. I drain 25% in less than an hour with moderate use. This is off topic but when you enable your 4G does it automatically turn off on you. I think my 4G is broken and just want to know. I may need to reflash it.
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I haven't tried cause Detroit doesn't have 4g yet but I'll check
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erawtik said:
im runnin it with stock kernal and i have no complaints. I just took a screenshot showing like 43% left off charger for 14 hours and talk time was like 1hour and 23 mins. Plus iv used it to play mabey half hour of games and half dozen text. Il see if i can get the ss posted.
Click to expand...
Click to collapse
That's great my battery life was about 4 hours heavy use 6.5 moderate
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gqstatus0685 said:
I have Kings #11 and my battery blows. I drain 25% in less than an hour with moderate use. This is off topic but when you enable your 4G does it automatically turn off on you. I think my 4G is broken and just want to know. I may need to reflash it.
Click to expand...
Click to collapse
No it isn't unless you lose service completely I.e. a tunnel or if your battery goes too low
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hackulous said:
No it isn't unless you lose service completely I.e. a tunnel or if your battery goes too low
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What rom are you using?
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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!
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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.
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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
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Click to collapse
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
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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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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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Best kernel for battery life?

Which .37 kernel gives the best battery life? I flashed Incredikernel last night and then charged the phone. This morning I used it for 10 minutes to check emails and the battery went from full to 79.
Oh, and I'm running CM7 RC2
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I'm also very interested in this. I just recently rooted/flashed CM7 RC2, and the battery life has been quite disappointing so far. Even with the unnecessary services turned off, my battery drains quite quickly.

I am rolling with SkyRaider 3.5, Lou's #8, an 1800mah battery and this morning, I shocked myself!
I left my house w/88% charged. Took my son to the dentist - used the phone for probably 44 minutes during that, just goofing off, reading, tweaking and whatevering ...
When I left the dentist office, 77%. Drove to work (1 hour) ... sitting at 74%.
I am also running the evo radio - which some say helps or doesn't - but I'm as happy as can be.
I turned off all of the memory management stuff and the phone is lasting longer...
I should also add - that I use Juice Defender, however when USING your phone, it is "defenseless". I find it to help me a lot with my "in my pocket" battery life. You still get txt and calls, you just don't get internet traffic.
YMMV

Where did you turn off the memory management features?

I've been using ziggys latest on Incredibly Re-Engineered Z and having great battery life. 14 hrs today off charger and was still at 50%.

Sanders
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trickster2369 said:
I've been using ziggys latest on Incredibly Re-Engineered Z and having great battery life. 14 hrs today off charger and was still at 50%.
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Can you give me the link to it?

Op is looking for best .37 kernel, you guys are recommending .32 kernels which are incompatible with gingerbread.
Sent from my desire z inc port.

what is a kernel and where is there a list of other things you guys are saying so I decipher the lingo.,., sorry for the noob question

Sniperdog said:
what is a kernel and where is there a list of other things you guys are saying so I decipher the lingo.,., sorry for the noob question
Click to expand...
Click to collapse
Troll around in the developer section for a bit, I think they even have a few stickies, you'll figger it out pretty quickly.
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High AOS, cell standby and idle on omfgb?

I have been browsing these forums for a long time since I owned a hero and flashing roms and stuff is not new to me so I understand the basic functions quite well.
My question is, is there anything I can do to lower these usages using aosp roms? So far using the latest omfgb nightly, my battery has been qoing quite well(13 total hours but that's with a mix of heavy use) using tiamat 3.3.7 SBC kernel with no undervolting or overclocking using the smartass scale. But I feel it could be better without such high usage. After a fresh charge, my cell standby and idle are about 50/50. The only other thing I can think of doing is turning off the proximity sensors(but I can't find the zip). Any help would be appreciated.
Edit: I am on HW003 and all the latest radios and pri. I am not sure about the NV but as soon as I find the latest one I will be sure to flash it and update any changes
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If battery isn't draining more then usual your fine u have those #s and no issues
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Don't worry so much. Your battery has to be used some way, and after 13 hours that's just what uses it most. It isn't to say that they are using too much and you need to fix it, because your battery can only last so long without UVing and such. You could put your phone in airplane mode, but that is pointless.
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Now after a few days running this rom battery life seems to be decreasing even though nothing changes with the battery use. Keep in mind I I only got 13 hours with 8 hours of my phone being completely idle(gotta sleep sometime lol). I ran Pandora for an hour then sent texts here and there throughout the day until it died. Never used GPS. For some reason it doesn't matter what rom I use, battery usually drains at the same rate as described. No matter what tweaks I make to try and increase it
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