Kernel Suggestion - EVO 4G Q&A, Help & Troubleshooting

Hi everyone, as the title states, I'm trying to determine which kernel would be best for me. I'm currently using salvage mod 1.4 rom, and I love it, but my battery drains a little faster than I would like. Any suggestions would be great. Thanks!
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Try a Tiamat or Savage-Zen kernel because they can both work with vipermod and V6 Supercharger.
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Tiamat 3.3.7
and dont forget when flashing a new rom to recalibrate your battery.

tiamat 4.0.8

Thanks for the tips! I think ill give the Tiamat 3.37 a shot later. Noob question, but what is entailed in calibrating the battery. And do I flash kernels the same way as roms? Thanks for the help!
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You calibrate it by following some steps with a series of plugging and unplugging the phone to get it to true 100%. You can use an external charger to avoid all the crazy steps.
Once it's 100%, go to recovery and wipe battery stats and that's it.
World peace with no regard for human life.

Related

Helpp! Terrible battery life...

So I've had my evo a couple months and just realized how bad my battery is compared to people on here. Some people I've seen can go more then 24hrs without charging, id like to know how?
Basically I charge my phone all night wake up at 7 go to school (don't get great service if that matters) I might have the screen on and texting/internet about only 25% of the day. Then by the time I get home at 3 im around 20-30 percent? I'm running miui rom i also have my email refresh to never, have setcpu to the lowest when screen off and screen brightness usually 50%. Also I'm using the stock battery but going to buy the gallios 2000mah or whatever from ebay.
Sorry for writing a book i just need better battery. I've seen threads everywhere about this but I just want to hear everyone's tips. Thanks
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yours just like me, my phone is on 8 hours (while inm at school duh ) and i say i use it for about 2 hours while im at school. i use a sense rom (AOSP roms give me horrible signal) and when i leave school im about 90%-96% . i use SBC kernel and give it 3 days to settle in you wont see the battery life instantly. try it out
Thanks. Will an sbc kernal work on miui? I've never used a kernal...do u just installed them like roms? If so what data do I wiped? Sorry for all thames questions.
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I reccomend the savaged zen HAVS CFS kernel...I'm on stock battery on CM7 nightlies / with WiMax, and I have had my phone unplugged since 8am, and still have 48% left...I'm able to go about a whole day.
http://mirror.munkibizness.com/
I also have a question on kernels while we are talking about them. Is there a certain way to install them or do i just install the zip through the boot screen? I installed the newest ziggy kernal, dated nov 24th but didnt notice a change in battery life. Any help?
teh roxxorz said:
I reccomend the savaged zen HAVS CFS kernel...I'm on stock battery on CM7 nightlies / with WiMax, and I have had my phone unplugged since 8am, and still have 48% left...I'm able to go about a whole day.
http://mirror.munkibizness.com/
Click to expand...
Click to collapse
Thanks. That kernal will work with miui correct? And I just wipe cache and davkic or whatever right not battery stats? Then installed it like a rom?
Edit: I went to that site but I don't understand which one I download? Sorry I'm a new to this
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jc8081 said:
Thanks. That kernal will work with miui correct? And I just wipe cache and davkic or whatever right not battery stats? Then installed it like a rom?
Edit: I went to that site but I don't understand which one I download? Sorry I'm a new to this
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Click to expand...
Click to collapse
Download the 8th one from the bottom
its named :
Savaged-Zen-V0.0.5-CFS-HAVS-SBC-WiMAX-Froyo-Signed.zip
and yes it works on miui clear cache and dalvik cache and flash the bad boy. you might see bad battery life for hours or day but kernel has to get use to the ROM it will start to work out. and once your phone gets to 100% on battery it is still charging
Is that the same for all kernels? They take time to adjust to the rom? Or just the kernel you are recommending right now?
All kernels take a couple days for the to "set in."
Ya that's the reason I want it I let my phone charge overnight to 100. So with this rom it will keep charging all night? If so ur saying it won't work in the morning if i install it tonight?
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yea im with the guy who said somethin about sbc i use my phone through out school facebook angry birds lil zenonia here and there texting use the nike boom app when i go to 24 after practice and i come home at 6:30 ish with still 46% battery and unplugged at about 5 am
Thank you very much, I guess I'll give this rom a week or two see if it works out. Thanx for the help guys.
But u cant get sbc on miui right? Bc im in love with miui lol
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jc8081 said:
But u cant get sbc on miui right? Bc im in love with miui lol
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Click to expand...
Click to collapse
You can use SBC on MIUI, I'm using the one posted in this thread already, works great.
Can someone link me to the sbc kernal I would use on miui? I'm new and don't really understand which one to choose
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jc8081 said:
Can someone link me to the sbc kernal I would use on miui? I'm new and don't really understand which one to choose
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Click to expand...
Click to collapse
1. Boot into recovery
2. Wipe cache and dalvik cache
3. Flash your current MIUI rom (I've had the best results flashing kernels this way)
4. Flash the kernel.
5. Boot
6. Drain your battery low and boot into recovery and wipe batt stats.
7. Boot back up and let it die.
8. Charge to full.
Savaged-Zen CFS SBC Froyo
http://mirror.munkibizness.com/dl.php?id=26
What hardware do you have? If you have an 003 or 004 you may have issues with the screen waking up with this kernel. If so, flash the Savage 1.6 CFS SBC http://dl.dropbox.com/u/18860340/Savage-Kernel-v1.6-CFS-HAVS-WiMAX_SBC.zip.
Set your setcpu profile to conservative. You'll get the best battery life that way.
I'd recommend downloading Battery Monitor from the Market and putting the widget on your homescreen. When the mAh drops into the teens, your battery is full.
eventer289 said:
1. Boot into recovery
2. Wipe cache and dalvik cache
3. Flash your current MIUI rom (I've had the best results flashing kernels this way)
4. Flash the kernel.
5. Boot
6. Drain your battery low and boot into recovery and wipe batt stats.
7. Boot back up and let it die.
8. Charge to full.
Savaged-Zen CFS SBC Froyo
http://mirror.munkibizness.com/dl.php?id=26
What hardware do you have? If you have an 003 or 004 you may have issues with the screen waking up with this kernel. If so, flash the Savage 1.6 CFS SBC http://dl.dropbox.com/u/18860340/Savage-Kernel-v1.6-CFS-HAVS-WiMAX_SBC.zip.
Set your setcpu profile to conservative. You'll get the best battery life that way.
I'd recommend downloading Battery Monitor from the Market and putting the widget on your homescreen. When the mAh drops into the teens, your battery is full.
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Click to collapse
Thanks but how do I know what hardware I have sorry I'm a noob lol
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jc8081 said:
Thanks but how do I know what hardware I have sorry I'm a noob lol
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Click to expand...
Click to collapse
It's under hardware info of about phone. You can only see it on a sense rom.
teh roxxorz said:
I reccomend the savaged zen HAVS CFS kernel...I'm on stock battery on CM7 nightlies / with WiMax, and I have had my phone unplugged since 8am, and still have 48% left...I'm able to go about a whole day.
http://mirror.munkibizness.com/
Click to expand...
Click to collapse
Im planning to go back to http://forum.xda-developers.com/showthread.php?t=935275 CM7-GX4(EX+4G), is that the same one you are using, if so, are you using another kernel then the one suggested? If so which, because I also only get about 10 hours on cm7, I want to use this on my main evo. Miui 1-14 is the one i use for my ipod evo it last 45-50 hours on avg.
Just to jump in real quick, I am using Myn warm 2.2 and the battery life is amazing and I don't even use a different kernel than stock. I'm talking twelve hours easily with heavy use
Sent via HTC EVO 4G

Phone charges to fast and dies fast?

Well my phone charges fast but it also dies fast.. any help?
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can you provide details? like how long it takes to charge/discharge? if you're using a custom kernel or what rom you're using? can't help if you just give a vague description of the problem
SBC stock HTC #15 kernel, fresh ROM, it charges 10% in like 10 minutes, and dies under 6 hours and all u do is text nothing else!
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If you leave 4g on it will eat your battery in 6 hours easy
Swyped from a galaxy far far away......
hmm have you tried calibrating the battery? or try a different kernel? sometimes problems like these are kernel related. I know that certain kernels have drained my battery faster than others.
Nope don't use 4g, & when phone is idle it dies 10% in 8hrs of idle but after that .. man under 30 minutes it goes down another 10% or less
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well honestly that's pretty normal especially for a sense rom but maybe if you try calibrating the battery and erasing battery stats, that could help you out. Also try not to have GPS on unless it's necessary. That also drains your battery. Or try a different kernel like netarchy's kernel and if it's a non-havs kernel then combine it with setcpu.
What are you using?
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well I'm not on a sense rom so I'm running a savaged-zen kernel but when I WAS on a sense rom I used this one http://qap.la/~netarchy/netarchy-toastmod-4.3.2-cfs-nohavs-nosbc-noUV-universal-signed.zip
y/netarchy-toastmod-4.3.2-cfs-nohavs-nosbc-noUV-universal-signed.zip It's cfs, has no havs so I could use it with setcpu and wasn't SBC because I don't like to mess with my battery that way.
What rom are you on?
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I'm on cm 6.1.2, I use the stable .0.4 savaged-zen kernel without SBC and with Wimax. and I average about 20-22 hours every day with moderate-heavy usage.
Why not use cm7 wimax?
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If it's charging too fast and dropping to fast, I would guess you need to calibrate it.
davidc23 said:
Why not use cm7 wimax?
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For some reason I just prefer cm 6.1.2 but I'm fine with waiting for the stable cm7 to come out. I use a kernel with Wimax because all of the savaged-zen kernels are Wimax capable.
Honestly though, try calibrating the battery and then either use the kernel you have now or a different one but always remember to wipe cache/dalvik-cache
I'm about to flash cm7 wimax, and what can I have my brightness set to?
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you can use auto brightness. I usually keep it on the lowest because I find the others to be too bright for me personally and when I'm in bright places I set it to auto. By the way if you use the savaged-zen kernels, set the wifi sleep policy to never to avoid random reboots.

Best battery saving kernel?

Any one have ideas for battery saving kernels?
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Well... everyone is different, and all phones take each kernel different. It all depends in your usage and what things you're running. You have to try out different kernels and see. You can try SBC type kernels they work great on my phone. Give that a try. Search and look for kernels in the search box. Hope this helps
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kernel
might want to try netarchys kernels they are great....hes the best
Savaged Savaged Savaged!!
Savaged-zen is an amazing kernel, plus it has SBC which I love. Great battery life, quick. What more could you want?
I personally have good battery with the Tiamat kernel; sbc available if you want it.
OK...first post so here we go. Been using the destroyer rom and the latest sav-zen kernal (v.0.2.0 cfs) for the last two days. My phone responds pretty smooth even being underclocked. The battery life is great compared to stock...yesterday with light-moderate use I was at 17 hours with 30% left. Today over 12 hours of light use but jumping in and out of roaming for about four hours and I'm at 64%. Great job to all the devs
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Sorry, forgot to mention its the SBC, gingerbread version of that kernal
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My setup in sig works well for me. Screenshots can be seen on my Facebook page linked in sig
Sent from my Evo. Powered by MikFroyo, netarchy, XDA, and the tears of iPhone owners

Evo battery life....

Ok, I have an evo, running fresh gingerbread rom, and.....the battery still blows, i have tried most if the popular roms and was not impressed, i have set cpu as well, i dont see any change, im not really that good at this stuff so can somebody PLEASE hook me up with a method to make my phone last a day, roms, kernals, set cpu profiles, anything.....thank you all greatly
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If you are on 4g, wireless tether, playing roms, texting, and making calls, then don't expect the phone to last more than 5 hours.
First thing you need to do is start off with a fresh rom... pick your favorite so far.
Reboot
Install kernal (I like tiamat for AOSP or Netarchy for Sense but I suggest you try your own)
Reboot
Install undervolting script
Reboot
Open Google Talk>Settings>uncheck automatically log on then log off google talk
Install SetCpu
If you don't really game or anything then lower your voltages to 125 min 700ish max (you can be more aggressive if you want, but I wouldn't)
Charge phone to a 100%
reboot into recovery
wipe battery stats
Use your phone till it dies
Recharge
I think you will now have a strong phone that can last a good day depending on how you use it
If you still want to increase your battery life after all that
Lower brightness
lower the updating frequency of stocks, accounts, etc
make it a habit of turning off radios when not in use or install Juice defender
Create profile in SetCPU to lower CPU when screen off
All really good suggestions above...
but sometimes it could be just the battery it self... if all else doesn't work try another battery. The previous stock battery was horrible for me even after trying all the settings and etc. Once I got a new battery and did all the setting changes this thing is ready for anything.
What rom are you using? For the best battery life with a rom like cm7 I recommend using an SBC kernel from tiamat 4.0.2 SBC+ and give it a few days to settle in...then when your battery is low around 20% or less charge it for at least 4-6 hours while phone is sleeping..then turn off your phone while plugged in and charge for another hour..then unplug til green light goes off then plug in again til light goes green REPEAT 10 TIMES! then turn on phone while plugged in wait 2 minutes then unplug and battery is improved...do it every time you charge it from low %... this is for SBC kernels...also follow what the others said above me... I use an extended battery on conservative running it at 245 and 768 its been 12 hrs and I'm at 71% with moderate to heavy use...hope this helped
midget tossing is habit...2010 midwest regional champion... hw 001
Click the link in my signature for a good battery conditioning technique and if you want a quick way to reduce battery drain, turn DATA off, unless you need it.
Get tiamat sbc kernel with viperboys scripts
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wow, seems pretty involved, ill give this a shot, im running Fresh 4.0.0.4 rom now, is there another rom i should be using otherwise? i dont use the tether, i just do the youtube thing, facebook,email text and call, nothin to extensive
Try Evodecks 1.0 or 1.2c... Very nice and everything works on it... I'm using Tiamat 4.0.2 w/ sbc, its been 23 hrs and still at 59% thats moderate use though! But just search around and eventually you'll find something that suites your taste... MIUI is also a good rom! Just my 2 cents...
scottgalit61 said:
Try Evodecks 1.0 or 1.2c... Very nice and everything works on it... I'm using Tiamat 4.0.2 w/ sbc, its been 23 hrs and still at 59% thats moderate use though! But just search around and eventually you'll find something that suites your taste... MIUI is also a good rom! Just my 2 cents...
Click to expand...
Click to collapse
Thank you sir, im gonna start checkin them out now
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It's not the ROM, you HAVE TO CONDITON YOUR BATTERY!!!
And get rid of SetCPU
HipKat said:
It's not the ROM, you HAVE TO CONDITON YOUR BATTERY!!!
And get rid of SetCPU
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Really, why should i dumo it? And how do i condition the battery
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frankie253 said:
Really, why should i dumo it? And how do i condition the battery
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Click to expand...
Click to collapse
Dump*
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KINGEVO R5
Netarchy 4.3.4 SBC havs more universal kernel
Juice defender ultimate (custom settings)
Turn off wifi limit
Unchecked auto brightness and set it to anything less than 50%
Turn off 4g
Use wifi if available
That's it. I would get a full day out of my battery with little phone lot of wifi usage. Text. Aim. Words with friends. FB.
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frankie253 said:
Really, why should i dumo it? And how do i condition the battery
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Click to collapse
Dumo???????
Click the link in my signature
HipKat said:
Dumo???????
Click the link in my signature
Click to expand...
Click to collapse
Dump......my bad
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im using cm nightly 80 tiamat 4.0.3 sbc kernal viperboy v1 -75 underclocked @ 537..runs smooth..battery life is great. im a heavy user,zynga,facebook,XDA,flash everything i can get my hands on lol..battery life doubled stock battery btw
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mfknboss said:
im using cm nightly 80 tiamat 4.0.3 sbc kernal viperboy v1 -75 underclocked @ 537..runs smooth..battery life is great. im a heavy user,zynga,facebook,XDA,flash everything i can get my hands on lol..battery life doubled stock battery btw
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Thank you, I'm probably gonna give cyanogen a go, I hear great things
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frankie253 said:
Thank you, I'm probably gonna give cyanogen a go, I hear great things
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I agree. On CM7, and I have 18hrs 29 and at 73%. Mild gaming...texts...some music.
teh roxxorz said:
I agree. On CM7, and I have 18hrs 29 and at 73%. Mild gaming...texts...some music.
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Wow!! That's impressive, I haven't gotten there yet but I def see I huge change, I just need to figure out this kernal thing, I'm using a savage zen kernal now and it seems pretty fast and the battery is alot better
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Your opinion needed

I cannot run a undervolted kernel on my evo for some reason, it doesn't play nice. I liked tiamat on my previous evo, was the only one I ran. while I have tiamat running i have about a minute before it reboots. My question is can I use vipermod to restore voltages to stock/stable. If so what voltage should I enable. I'm useing an extended battery 3500, if that makes a difference. Also if that's not possible what kernel do u recommended I flash to get better battery life?
Edit: trying savage 221
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What ROM/kernel combo do you have? how are you flashing them? Are you making sure to pair sense kernels with sense ROMs and AOSP kernels with AOSP ROMs?
I've been sticking with stock Wich is cyan, On miui. I did some home work and it looks like salvage has stock volts by default. Lol yes I'm keeping aosp kernels on aosp roms
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stinky_pinky said:
I've been sticking with stock Wich is cyan, On miui. I did some home work and it looks like salvage has stock volts by default. Lol yes I'm keeping aosp kernels on aosp roms
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Click to collapse
Sorry, it may sound like a retarded question for me to ask. But you'd be surprised at how many people are running sense and flash an AOSP kernel, or vice versa. It's always nice to get the obvious issues out of the way in order to focus on what the real cause is.
MIUI is one of the ROMs I've never really used. Make sure your battery is calibrated. That should help a bit with battery life. I'm using Savaged Zen on mine with CM7 and it works amazingly well. As far as the undervolting issue.....I am not too sure as to what is causing that.
What method do you use to calibrate. I've never done that. All I've ever done is wipe battery stats
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Charge battery to 100%, enter recovery, wipe battery stats, let phone COMPLETELY discharge (till it turns off), then recharge to 100% again and use normally.
Cool thanks
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