Database Info

[KERNEL] Undervolt driver for the stock HTC kernel for EVO 4G and others (2.6.32.15)

This kernel module allows you to run any stock HTC Froyo kernel with lowered CPU voltages. Reducing voltage decreases power consumption by the CPU, thus lowering heat and increasing battery life.
INSTALL:
You need root or an unrestricted recovery image (e.g ClockworkMod) to install this. The default settings decrease voltage by 75-100 mV which seems stable on my device (HTC Desire) and is reported to be fine on the EVO. Just download the attached file and select it from recovery or ROM Manager.
I've built "update.zip" files for the EVO 4G with Linux kernel versions 2.6.32.15-g746f4f0, 2.6.32.15-ge2fb08e, and 2.6.32.15-g59b9e50. You can check your kernel version in Settings->About phone->Software information.
Other HTC devices running Froyo are supported. If you have a different device, please give me the full version number and I can add an update.zip for it.
Full details and source are in the original thread in the Desire forum:
[KERNEL] Undervolt driver for the stock HTC kernel for Desire and others (2.6.32.15)
Update, 2010-11-22: Added driver for 2.6.32.15-ge2fb08e.
Update, 2010-11-23: Added driver for 2.6.32.15-g59b9e50.

recant: love this idea when trying to keep this stock

Sounds like it would go well with Fresh's new rom.

ericwgarza1 said:
Sounds like it would go well with Fresh's new rom.
Click to expand...
Click to collapse
+ 1 on that I agree

sweet I like. Does it change the kernel version?

Too weak... funny considering there is more work involved in setting this up than most linux guys even do on a pc... let alone a phone.
tatnai said:
what's this here? sounds like an add on for those too weak at heart to flash a modded kernel. will likely find some friends, strong work.
Click to expand...
Click to collapse
Sent from my PC36100 using XDA App

tatnai said:
what's this here? sounds like an add on for those too weak at heart to flash a modded kernel. will likely find some friends, strong work.
Click to expand...
Click to collapse
Maybe not. I run the netarchy kernel but don't OC because it seems to crash at random times. I use it because the battery life is better than stock.
I'll revert to a clean back-up and give this a try just for giggles.

I would like to see some results.
I say that because I have tried a few havs roms and get worse battery life.
I think what a lot of people don't realize unless they are heavily into overocking is that microadjustments just dont have much effect there needs to be some substantial drops to really have any effect on battery and heat.
I realize that this is no desktop or laptop cpu, and that this cpu is based off such low voltages but such minor voltage adjustments, 80-100mv just arent going to have the desired effect unless that equates to a "substantial" voltage drop.
Not to mention the fact that most of you are going to overclock your phone without the faintest idea that doing so, even with a lower cpu voltage, will still cause worse battery life. This is a fact.. to argue it is futile. Its the nature of the beast.. do some reading and find out for yourself.
You can overcome some things by using on demand overclocking but you have to do extensive testing to find the sweet spot.
fr4nk1yn said:
Maybe not. I run the netarchy kernel but don't OC because it seems to crash at random times. I use it because the battery life is better than stock.
I'll revert to a clean back-up and give this a try just for giggles.
Click to expand...
Click to collapse
Sent from my PC36100 using XDA App

Nice work. I'm not interested in oc'ing, nor flashing a custom kernel. I may give this a go after a few others check in w/ results. I just want to know that it's stable.
I went to your other thread and saw the source. Clever solution, nice work. I really do like that you wrote a device to /proc that does a little more than report the frequencies back. This will make it very easy to write some scripts, or even a UI, that lets me tweak the settings. Hopefully I have some time to work on that in the upcoming weekends.

Will take a look at this first chance I get. Trying to finish my battery logger since everything available now doesn't log exactly what I want to know. Kudos.

Does this make HAVS obsolete ?

iscaela said:
This kernel module allows you to run any stock HTC Froyo kernel with lowered CPU voltages. Reducing voltage decreases power consumption by the CPU, thus lowering heat and increasing battery life.
INSTALL:
You need root or an unrestricted recovery image (e.g ClockworkMod) to install this. The default settings decrease voltage by 75-100 mV which seems stable on my device (HTC Desire) and is reported to be fine on the EVO. Just download the attached file and select it from recovery or ROM Manager.
I've built "update.zip" file for the EVO with Linux kernel version 2.6.32.15-g746f4f0. You can check your kernel version in Settings->About phone->Software information.
Other HTC devices running Froyo are supported. If you have a different device, please give me the full version number and I can add an update.zip for it.
Full details and source are in the original thread in the Desire forum:
[KERNEL] Undervolt driver for the stock HTC kernel for Desire and others (2.6.32.15)
Click to expand...
Click to collapse
Undervolting meaning only when screens off or on and off ?

I installed and will get the best battery life yet. Better than when I was with King and other kernels....thanks!!!

Anyone have any results from flashing this yet? How is battery life? Any stability issues?

look4wisdom said:
Anyone have any results from flashing this yet? How is battery life? Any stability issues?
Click to expand...
Click to collapse
No stability issues and it seems to help on battery a little bit but I really can't tell a big deference. I was expecting for it to help out more. Thanks anyways OP for the share

i did say those little microvoltages aint gunna make any difference.
plus if you try to overclock you just cancelled any lowered voltages and actually cause higher power draw than stock mhz at stock voltages.
higher mhz equals higher power draw whether you have it undervolted or not.
you have to make a signifigant drop in voltage to make any difference at all. let alone if you try and overclock.
not trying to dog the guy who discovered this i am just sing plain and simple math, heat, and electronic voltages.
Sent from my PC36100 using XDA App

question there a some diference between this kernel and the once from King and Net, talking about battery life and performance

juancaperez2000 said:
question there a some diference between this kernel and the once from King and Net, talking about battery life and performance
Click to expand...
Click to collapse
This isn't a kernel its just a couple of files that go with the kernel. One file for initial boot ect/initd and a .ko file that goes in system/lib/module folder.

I have an Evo, [email protected] #11. I would like to try it. Please build an update.zip to support it.
Cheers.

snovvman said:
I have an Evo, [email protected] #11. I would like to try it. Please build an update.zip to support it.
Cheers.
Click to expand...
Click to collapse
OP
Sent from my EViO + PURE= PURE Baked EViO

[Q] Frequent launcher freezes

I've been having a really annoying problem for a little over a week now and I'm out of guesses...
After running for a while my launcher (either ADW or LP) will lock up and make the phone unresponsive until I pull the battery let it come back up...It'll typically happen once or twice a day, and has happened with the stock .5 RUU rooted (using SenseUI, no LP or ADW), CM6 stable, NFXHero, Fresh, etc, so I'm leaning away from it being a ROM problem, but when it happens I can't unlock the phone from sleep. I booted the phone around 12:30am CST this morning and it just happened at 8:30am CST. When I slide to unlock it freezes, and I can hit end, try to wake it back up, and repeat the process and it continues to be unresponsive until the launcher FC's...the only thing I could figure to start with was ask in the IRC and Decad3nce recommended turning JIT off because over time it would bog down the phone, so I decided I would just flash CM6 and GAPPS and no tweaks, etc since no one else had a similar issue and still having the issue. I also limited what apps I installed to rule out something eating up CPU in the background (didn't install anything that stays running) I've ruled out CM6 being the problem seeing as it happens with any ROM I use and the only thing I can think of being the issue would be memory leak, and the only way I've come to that conclusion is since this is flash memory, I know it has a lifespan of reads/writes, and I'm wondering if I've just wiped and flashed too many different ROMs, etc...Also, I'm not using ANY homescreen widgets or themes, only a custom background. I don't have Autokiller installed or the battery tweak or ATK...just bare ROM.
Has anyone else had this issue? Is there any way I can troubleshoot it or do I just need to RUU the phone and take it to Sprint and try to get a replacement? I'm not due for an upgrade until Feb. so I can't just go swap out, plus I really like this phone and would like to keep it as long as possible...

Matt262 said:
I've been having a really annoying problem for a little over a week now and I'm out of guesses...
After running for a while my launcher (either ADW or LP) will lock up and make the phone unresponsive until I pull the battery let it come back up...It'll typically happen once or twice a day, and has happened with the stock .5 RUU rooted (using SenseUI, no LP or ADW), CM6 stable, NFXHero, Fresh, etc, so I'm leaning away from it being a ROM problem, but when it happens I can't unlock the phone from sleep. I booted the phone around 12:30am CST this morning and it just happened at 8:30am CST. When I slide to unlock it freezes, and I can hit end, try to wake it back up, and repeat the process and it continues to be unresponsive until the launcher FC's...the only thing I could figure to start with was ask in the IRC and Decad3nce recommended turning JIT off because over time it would bog down the phone, so I decided I would just flash CM6 and GAPPS and no tweaks, etc since no one else had a similar issue and still having the issue. I also limited what apps I installed to rule out something eating up CPU in the background (didn't install anything that stays running) I've ruled out CM6 being the problem seeing as it happens with any ROM I use and the only thing I can think of being the issue would be memory leak, and the only way I've come to that conclusion is since this is flash memory, I know it has a lifespan of reads/writes, and I'm wondering if I've just wiped and flashed too many different ROMs, etc...Also, I'm not using ANY homescreen widgets or themes, only a custom background. I don't have Autokiller installed or the battery tweak or ATK...just bare ROM.
Has anyone else had this issue? Is there any way I can troubleshoot it or do I just need to RUU the phone and take it to Sprint and try to get a replacement? I'm not due for an upgrade until Feb. so I can't just go swap out, plus I really like this phone and would like to keep it as long as possible...
Click to expand...
Click to collapse
+1-I am having the exact same issues with same setup although I do have AutoKiller and it is set to Optimum.

If you havent already try the Brainfunct kernal from this forum. I used to have random lockups and such before I used that..

Jason kiDD said:
If you havent already try the Brainfunct kernal from this forum. I used to have random lockups and such before I used that..
Click to expand...
Click to collapse
Sorry, I should've mentioned that I DID try the BFS kernel (9/28 build) and it was after flashing kernels that I noticed it (mostly coincidence I'm sure) which is why I flashed straight CM6 to rule out the kernel

Funny as you mentioned it my phone rebooted once and then was non-responsive a second time after being untouched.. You must remember that these are RC1 roms and not final so there will be issues with each iteration.. Its the drawback of pushing our phones to the limit..

Jason kiDD said:
Funny as you mentioned it my phone rebooted once and then was non-responsive a second time after being untouched.. You must remember that these are RC1 roms and not final so there will be issues with each iteration.. Its the drawback of pushing our phones to the limit..
Click to expand...
Click to collapse
It happened with the stock .5 RUU ROM with the only modification being AndROOT...I RUU'd it back to .5 this morning and am going to ride it out untarnished to see if the problem replicates again. If so, I believe I will have successfully found it's a problem with the phone itself, and at that point take it to Sprint and see about paying the $35 for an exchange. I would do the OTA updates but if this shows its fixed I don't want to lose the ability to root, and I don't want to have to RUU back to .5 in order TO root. I was really hoping a dev who understands these ROM's better than I could chime in with some thoughts, but I guess I'll just have to keep test and tuning...I definitely appreciate these responses, though, and I'm happy I'm not the only one having this issue (though I'm still not happy it's happening lol)

not trying to be mean but your better off actually posting this in the right section and you might get some better answers. Q&A section is there for a reason.

t12icky0 said:
not trying to be mean but your better off actually posting this in the right section and you might get some better answers. Q&A section is there for a reason.
Click to expand...
Click to collapse
Thanks...I figured sticking it in the Dev section would be more fitting since my first inclination was strictly a software problem, and not too sure how often dev's surf the other threads.

Matt262 said:
Thanks...I figured sticking it in the Dev section would be more fitting since my first inclination was strictly a software problem, and not too sure how often dev's surf the other threads.
Click to expand...
Click to collapse
oh...devs go in there quite a bit. If not them then plenty of people who know the answers are in there.

I have the same issue I've used stock roms cm6 roms and tons of different kernels. I've noticed it moreso when its been asleep for a while it will wake up fine and then a couple minute later it will freeze up and force me to do a battery pull.

t12icky0 said:
oh...devs go in there quite a bit. If not them then plenty of people who know the answers are in there.
Click to expand...
Click to collapse
Gotcha...if you check out my post count I'm a n00b to these boards, but I appreciate you not blasting me like I've seen others have that happen to them (for not searching ,etc)...maybe a mod could move this for me so I don't clutter the boards?
Dono74 said:
I have the same issue I've used stock roms cm6 roms and tons of different kernels. I've noticed it moreso when its been asleep for a while it will wake up fine and then a couple minute later it will freeze up and force me to do a battery pull.
Click to expand...
Click to collapse
Exactly! Now if a resolution can be found...since I posted this in the wrong section, maybe there is a resolution and I just wasn't in the right spot to see it...

Matt262 said:
I've been having a really annoying problem for a little over a week now and I'm out of guesses...
After running for a while my launcher (either ADW or LP) will lock up and make the phone unresponsive until I pull the battery let it come back up...It'll typically happen once or twice a day, and has happened with the stock .5 RUU rooted (using SenseUI, no LP or ADW), CM6 stable, NFXHero, Fresh, etc, so I'm leaning away from it being a ROM problem, but when it happens I can't unlock the phone from sleep. I booted the phone around 12:30am CST this morning and it just happened at 8:30am CST. When I slide to unlock it freezes, and I can hit end, try to wake it back up, and repeat the process and it continues to be unresponsive until the launcher FC's...the only thing I could figure to start with was ask in the IRC and Decad3nce recommended turning JIT off because over time it would bog down the phone, so I decided I would just flash CM6 and GAPPS and no tweaks, etc since no one else had a similar issue and still having the issue. I also limited what apps I installed to rule out something eating up CPU in the background (didn't install anything that stays running) I've ruled out CM6 being the problem seeing as it happens with any ROM I use and the only thing I can think of being the issue would be memory leak, and the only way I've come to that conclusion is since this is flash memory, I know it has a lifespan of reads/writes, and I'm wondering if I've just wiped and flashed too many different ROMs, etc...Also, I'm not using ANY homescreen widgets or themes, only a custom background. I don't have Autokiller installed or the battery tweak or ATK...just bare ROM.
Has anyone else had this issue? Is there any way I can troubleshoot it or do I just need to RUU the phone and take it to Sprint and try to get a replacement? I'm not due for an upgrade until Feb. so I can't just go swap out, plus I really like this phone and would like to keep it as long as possible...
Click to expand...
Click to collapse
Sounds like a garbage collection fail when coming from sleep, try using ondemand cpu governor for the time being.
Otherwise.. don't set your max freq too high, that's usually where lockups stem from.

Decad3nce said:
Sounds like a garbage collection fail when coming from sleep, try using ondemand cpu governor for the time being.
Otherwise.. don't set your max freq too high, that's usually where lockups stem from.
Click to expand...
Click to collapse
Actually when I flashed CM6 last night with no tweaks I didn't even install SetCPU or any kernels...just the one that came with it capped at 691.2...no battery tweak or anything

I think there is a problem in the latest iteration of CM6 but again its not a promised fully stable build.. All I did since then was to flash the battery tweak over stock CM6 and poof problems were gone.. With the 9/22/10 it was the opposite and i had to flash the Brainfunct kernal instead of the battery tweak one..

Jason kiDD said:
I think there is a problem in the latest iteration of CM6 but again its not a promised fully stable build.. All I did since then was to flash the battery tweak over stock CM6 and poof problems were gone.. With the 9/22/10 it was the opposite and i had to flash the Brainfunct kernal instead of the battery tweak one..
Click to expand...
Click to collapse
Still a mystery to me as to why it's happening with more ROM's than just CM6 though...oh well, I'll see how stock .5 unrooted treats me this weekend, and if I have the same problem happen again, I know it's phone related and not to be blamed on a ROM (which I'd like to make clear -- I do NOT blame CM6, Fresh, or NFXHero for my issues. I know the dev's spent a TON of time building everything for us to have something we would otherwise NOT have, and my sole reason for this post is really to find out exactly what is wrong with my phone, not necessarily with a ROM, and most importantly to find out if I'm the only one experiencing these issues)...I do appreciate all the help and responses, and I'm thoroughly impressed with XDA and the responsiveness of everyone

Just in case anyone was interested at all, my phone completely bricked today (stock .5 running all weekend no issues) and the culprit is the touchscreen and all buttons but power stopped working...sprint's overnighting me a replacement so evidently something got too hot at some point or the like...thanks to all for the responses, and to those who had similar issues (not related to the ROM you're running) then keep an eye out for imminent failure lol

[Q] ROM ICS 4.0.4 Battery Issue

Hi there,
So I just flashed this ROM : http://forum.xda-developers.com/showthread.php?t=1474878
It was last night, I hopped that battery issue drain by Cell stanby~Android System would be fix, but it didn't worked for me..
I flashed the ROM correctly, everything was OK. Wiped data/cache/dalvik and even formatted /system.
I don't understand why, my battery is really strange, sometimes I lose only 2 or 3% during many hours, other times I lose 20% per hour (with inactiv use).
I never had battery issue before ICS.
I got a Nexus S i9023, I hope some of you gonna be able to help me, I really want to fix that battery !
Best regards,
SpawN-

flash a rom that doesn't suck your battery! Or try some kernels that helps you to save battery

Yea sure, but this ROM was just here for the problem with battery, so it had to fix the problem, but didn't work for me, that's why I don't understand =/

SpawN- said:
Yea sure, but this ROM was just here for the problem with battery, so it had to fix the problem, but didn't work for me, that's why I don't understand =/
Click to expand...
Click to collapse
sounds like it could be gremlins, or an app app wreaking havoc. also, apps that need to check for notifications drain battery quickly. i usually turn off all notifications(except gtalk/gmail).

I don't have any apps making annoying notifications, my Wifi and 3G are OFF and I often use Task Killer to kill useless processus.

I read that the porting of 4.0.4 for ns gsm was really smooth and battery save

This ROM wasn't even intended for your phone. All bets are off for stability...forget about battery life.
Seriously, though the behaviour you're seeing may not be the ROM. It could be programs keeping the phone awake during standby. To confirm, there's an app called Better Battery Stats on market (and in the Android Development and Hacking section on these forums) that may be able to help you figure things out.
- chris

Hello,
Have you tried to change your RADIO ?

try this kernel *Matr1x* with BLN and voodoo v16.0
http://forum.xda-developers.com/showthread.php?t=1361477
I think it would be help.

For what i've seen the 4.0.4 version was just a leak so there could be some issue/bug. Maybe is better to stay with a custom Rom+kernel and wait for the update or for a custom kernel based on oficial realease 4.0.4 version.
cheers.

The only battery fix in 4.04 was the android os stats being logged incorrectly, i.e. too high.
That has been fixed in 4.04.
I don't think there ever was a cell standby/android system logging bug.
You may be mistaken.

[Q] Flashing, roms, radio, etc?

I Rooted my Phone some time ago, i have installed some roms, some run good, some freezes my phone up, have remove my battery.
so what I need more info on, is should i do like I read about the Radio?, Kernel?, and then ROM?
What I show,
Kernel Version
2.6.35.14-RCMIX3D-V12-CRD-gec898d5-dirty
Baseband Ver: ( Radio)
12.29.60.19U_26.06.04.06_M
ROM
RunnyDroid v3.0
I have StraightTALK Sims, all DATA, SMS all working,
My Battery dose not last so long, 3 to 4 hrs, mostly not in use.
I seen a lot of post talking about this rom, and that rom works the best. or the battery last for 7+ hours.
My phone is not running a lot of apps, I even uninstalled my Anti-Virus.
I have to keep my phone on the Charger a lot. I even bought a New battery and same thing.
Thanks

Have you tried recalibrating the battery? Also, how much "screen -on" time during your 3-4 hours use?
Sent from a payphone!

Sorry, just noticed you said mostly not in use.
There's a apps you can download from the market- Battery Recalibration and Current Widget...with these 2 tools and a little knowledge of what running app/services are doing, you can track what's going on.
Or, you could just simply have a bad battery or a gooned-up flash (it happens).
Hope this helps.
Sent from a payphone!

Dinman said:
Sorry, just noticed you said mostly not in use.
There's a apps you can download from the market- Battery Recalibration and Current Widget...with these 2 tools and a little knowledge of what running app/services are doing, you can track what's going on.
Or, you could just simply have a bad battery or a gooned-up flash (it happens).
Hope this helps.
Sent from a payphone!
Click to expand...
Click to collapse
On the contrary, battery calibration has been proved to be nothing more then just a peace of mind type of procedure and really not a huge benefit. My advice would be to get Current Widget and fully charge your phone. Unplug it and let it sleep for about 6-8 hours with current widget logging the mA drain (the log is an option in the app itself, you just need to enable it). After the 6-8 hours ( I normally do this when I sleep so I know the phone is not in use) check the log and see if there is any weird mA drain. weird would look something like
1ma
3ma
180ma
230ma
1ma
2ma
Normal would be:
1ma
1ma
4ma
5ma
1ma
You get the picture hopefully haha. If you have weird drain then best bet would be to full wipe and reinstall the rom and individually install your apps one at a time and monitoring the mA usage to see what apps cause the drain and what doesn't. You can also try new radios with their matching RILs and see if that helps. There are also apps like Juice Defender and Green Power that have been said to improve battery life up to 2x. Hope that helps.

I have tested apps, done the ( Let the battery die, and then charge wait off to give a more of it charge.

buggme said:
I have tested apps, done the ( Let the battery die, and then charge wait off to give a more of it charge.
Click to expand...
Click to collapse
let your phone die and then recharging it fully does nothing for abnormal battery drain. So in that regard the only thing you proved to yourself was that your phone can charge properly. Are you 100% sure you are running the proper radio for the ROM or have the matching RIL for your radio? I still think its an app running in the background that is causing your problem. Are you sure that you full wiped and reinstalled the rom. Then with each app you want, install one. wait for 30 minutes and allow current widget to log the mA activity. Check the log to be sure there are no crazy spikes in mA and proceed to the next app repeating the same process. I know its annoying but that's the only way to be sure that your apps aren't causing the drain.
Also consider turning off sync, which I've heard can be a battery drainer. Turn off wifi as well when need in range since the scanning for wifi causes battery drain as well.

I really don't know, when I first got the phone, I Rooted it and unlocked it.
I Do have straight talk Sim I have been using.
all I did was change the ROM( I Think).
with all the little problems I'm having, I was think I have a lot wrong with it!
So I was going to download a need ROM, I seen talk about Radios, or RIL, and ROMS.
so No I don't know If I have everthing right.
I wasl looking atRCMixHD 4G V3.4 ROM, and if I used it, what Radio and RIL would I need.
having Stright Talk Service, witch runs on ATT, with difference APN settings.
what Would I need?
Thanks. Terrell

Usually, the ROM has all the correct radios, RILs, kernels etc inside the ROM itself and you would only need to change if you had some need for a different radio, like if you got poor service where you live. Kernels are dictated by the ROM.

jimcasey1768 said:
Usually, the ROM has all the correct radios, RILs, kernels etc inside the ROM itself and you would only need to change if you had some need for a different radio, like if you got poor service where you live. Kernels are dictated by the ROM.
Click to expand...
Click to collapse
And where did you get your info? Custom ROMs do not include radios.

Agoattamer said:
And where did you get your info? Custom ROMs do not include radios.
Click to expand...
Click to collapse
And that's why I asked. I need to set down one day and search, read, test,
On a different note.
All I can say is wow. 2,000,000 Roms and I still not know LOL. Thanks for all the info so far.

When you install a custom ROM it will include ROM, a certain RIL, and the kernel that the DEV has used with the ROM all in one package. The DEV will USUALLY let you know what the recommended radio should be to match the included RIL. You could flash it before or after you flash the ROM.
If you are having battery issues I would first start with a new battery. If you have already done that then flash a simple ROM for testing purposes. Stay away from highly tweaked and modified ROMs with a kernel set up for overclocking. I recommend juicy ROM from my sig. Install the 2.52 (R2) version which is still sense 2.5 and gingerbread 2.3.3. The ROM is flawless and you will get the best battery life than from anyother ROM. SEE how your battery lasts with it.
If you have your brightness set high, have many apps running in the background, are in an area where your signal is poor and is constantly lost, are syncing many accounts constantly, and you can't seem to put your phone down, then your battery will not last that long.

aospX rom problem
I installed the asopX rom and when my phone rebooted its stuck at a colorful animation screen. it's been doing it for a few hours... not sure if its still installing or stuck. Anyone ever experience this or know whats going on?

danielminter85 said:
I installed the asopX rom and when my phone rebooted its stuck at a colorful animation screen. it's been doing it for a few hours... not sure if its still installing or stuck. Anyone ever experience this or know whats going on?
Click to expand...
Click to collapse
Its bootlooping (not good) ...I would suggest to boot back into recovery and wipe and check your md5 sum & reflash or redownload file if needed.
Sent from a payphone!

dang!! that sucks! How do you do that?

danielminter85 said:
dang!! that sucks! How do you do that?
Click to expand...
Click to collapse
bootlooping isn't the end of the world. It only becomes an issue if you can't boot into HBOOT. You can boot into HBOOT by turning off the device and then holding the volume up and power button at the same time. You will then boot into HBOOT. From here your device will scan for a "PD98IMG.zip". I'm guessing since you don't know how to get into HBOOT then you've probably haven't flashed a radio so you shouldn't have a stray PD98IMG.zip on your sdcard. After it scans and doesn't find a a PD98IMG.zip you will be given a few options. One of which will be to boot into recovery. Do that. From there you can check the md5 (if you're using EXT4 recovery). If you want you can re-download another ROM and from recovery you can mount your SDcard so you can put the new ROM on your sdcard and flash per usual.

[Q] updated kernel to use with Slim ICS ?

I am running [ROM][4.0.4] Slim ICS(T959V)-UNOFFICIAL posted by beastmode, Question is there a more updated kernel I could use with it ?
I am thinking either [KERNEL]Proton Kernel build2[ICS][TFQ] or [Kernel]ICS/CM9 LZ Kernel from Team Fah-Q (Updated 20OCT12)
I am very happy with this ROM and GPS is working great (after a few hacks from other threads) but battery life is the worst !!! I lose 5% when using Waze/GPS plugged into the car charger and about 20% overnight just sitting there, I have tried all sorts of battery apps as well as turning off wifi at night with no luck. So I am thinking that a new kernal would help.
I only use the phone for GPS and Web browsing.
Has anyone used these kernels and with what ROMS ?
Interesting in upgrading not bricking my phone and installing everything from scratch
yes i am a newbie so apologies in advance ! Thanks.

Neither of those kernels (nor, really, anything else) is going to make Waze or any other GPS app stop using as much power as they do. If you wanted to change your scheduler and governor, those might make a difference... but anything with working GPS is a Herring kernels using the same paths to talk to the GPS.

Theraze said:
Neither of those kernels (nor, really, anything else) is going to make Waze or any other GPS app stop using as much power as they do. If you wanted to change your scheduler and governor, those might make a difference... but anything with working GPS is a Herring kernels using the same paths to talk to the GPS.
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Thanks for taking the time to answer. Even if GPS is a battery sucker what can I do about the fact that leaving the phone on takes so much battery ?
Could you suggest other stable kernel/ROMS for the SGH-T959V that support GPS and have decent battery life ? I like the simplicity of ICS and since all I do with this phone is browse the web and use GPS I really don't need any bells and whistles.
Thanks.

The two best ICS at the moment are probably Ultragen 1.01 (be sure NOT to use 1.00) or HebMIUI, which is the only ICS that still gets irregular updates.
The big thing to do with Waze is, if you don't NEED to stare at the screen, turn it off and just listen to the audio directions. Sucks down a LOT less battery that way, though it's still a bit painful.
Regarding general ways of improving battery life... look into Greenify if you haven't yet. Can tell apps to stop running in the background if you don't actually want them to. Just remember NOT to Greenify Waze if you don't want it to shut down with the screen off, or your music app, or anything else you actually want to use while you're not actively looking at it. Oh, and avoid Greenifying your email too. Though it's funny, it's not a good way to find out about new messages.

More options coming soon. Stay tuned...

bhundven said:
More options coming soon. Stay tuned...
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About how soon ?

eramm said:
About how soon ?
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please don't ask for eta's as it is considered being rude. updates will come when they come.
sent from within the white knight

GFX.myst. said:
please don't ask for eta's as it is considered being rude. updates will come when they come.
sent from within the white knight
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Jah, watch for an updated cm9 build. It will take some time.
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