Related
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
Does anyone know of some good apps (preferably free) that I can use to overclock a rooted droid charge, with the latest altered beast ROM and kernel?
There aren't any overclock kernels at this point. Its being worked on. Just be patient.
Fe_Man said:
Does anyone know of some good apps (preferably free) that I can use to overclock a rooted droid charge, with the latest altered beast ROM and kernel?
Click to expand...
Click to collapse
You can try tegrak from the market if you really want oc.
In all honesty, just wait for a kernel to come out that will actually oc. I'd love a kernel that uses voltage control and will wait for that...
Ahh, thanks. This is my first android device so I have no idea what to expect and when
If I can ever get my config straightened out, I was going to look into doing an OC kernel that uses Voltage Control, similar to nemesis2all's kernels for the Fascinate. Still trying to get a working config though.
My opinion though is that OCing the hummingbird processor is useless, and does little for performance on a day-to-day basis and only serves to give you big numbers in benchmarks while reducing battery life.
I mostly used the 1120 step skipping 1000 and scoring serious uv was awesome
For the people that want overclocking, here is your chance. I took my standard voodoo kernel, and put in the stuff needed to overclock it. Thanks to nemesis2all and his OTB kernel from the Fascinate for the code needed to get this to work. Also, use extreme caution when using the higher clock speeds. The stock "max" voltage for the CPU is 1300mv, and 1500MHz and 1600MHz are both at 1500mv, so it's heavily over-volted at the top end. By default, the system will boot to 1000MHz and you need to set the speeds you want in Voltage Control App. I don't personally use this because I think overclocking is useless, so any bug reports need as much information as possible, or they will be dismissed and not looked into at all. If you run into an issue with the system locking up, odds are that you have undervolted to much for a given clock speed. Other than that, you're on your own. Same FAQ applies as the regular PBJ kernel, so look there until I get a chance to post it here as well.
Installation Instructions:
1. Download zip
2. Transfer to SDCard
3. Reboot into recovery, you'll need to have CWM if you don't already
4. Install zip from SDCard and select the zip you downloaded.
5. Reboot and enjoy
0808
Make logcat an option that can be turned on/off
-From root shell, run "logcat-enable" to turn logcat on, "logcat-disable" to turn it off
Make /preinstall partition swap space
Fix problem with rooting phone on boot
Fix fix_permissions in recovery
Update to recovery
0731
Fix mount USB Storage in recovery
0730
Updated CWM binary
Custom boot animation support
0709
Voodoo Sound V10
0615
Overclocking - Use Voltage Control App to adjust clocks and voltages
0602
Voodoo Sound fixed - Thanks supercurio
Removed OnDemand
Added FIFO and BFQ IO Schedulers
Added tun.ko and cifs.ko
0531
Initial release, built from source
Undervolted
Voodoo lagfix available - Thanks supercurio
Updated compiler flags
Linaro Toolchain for cross-compiling
Battery hack to allow for non-OEM Batteries - courtesy of SirGatez
init.d support
SDCard speed tweak (via init.d script)
Upstream EXT4 Patches
VFAT Patch
TCP and CFS Tweaks to help data/performance
V(R) IO Scheduler
Auto-root on boot
Maybe missing some other stuff, check Github for full changes
TODO (somewhat in order of importance):
Smooth out boot animation
NOTES:
If you are experiencing problems, I need detailed info to be able to fix it or help you out. Failure to provide detailed info will mean I'm just going to ignore your problem as user error. Details would be something such as which kernel you are flashing (filename) and steps to reproduce the issue. Also, if you used any other kernels that had the same problem or didn't have the problem.
DISCLAIMER
By downloading and using the kernels, this signifies that you have read this full post and the FAQ before reporting an issue. You also take all responsibility if your phone breaks or your warranty becomes void (which, if you're flashing this, it already is). I offer no guarantees as to anything working, though I try not to release broken stuff, it happens sometimes.
FAQ Placeholder
2k+ on quadrant @ 1.4ghz... Niiiiice
Thanks imnuts
Undervolted and running ok so far.
Sent from my SCH-I510 using XDA App
Could you cuties advise on what sort of settings you're using for this?
I'm using the 'vr' setting with an Interactive governor at 1.1GHz and my phone is slowing to a crawl so it's hardly usable. I'm not looking for any crazy overclocking just something to keep my phone snappy whilst I keep in touch with my prostitutes and be sure they are working the proper street corners.
The weird thing is I'm not sure if Voodoo Lagfix is enabled. Voodoo control says yes, CWM says no and won't let me enable it that way, is there a way to be sure?
Spanks!
ZeppelinJ0 said:
The weird thing is I'm not sure if Voodoo Lagfix is enabled. Voodoo control says yes, CWM says no and won't let me enable it that way, is there a way to be sure?
Spanks!
Click to expand...
Click to collapse
Go into a Terminal Emulator on the device and type Mount. 3rd or 4th row on the list should show ext4. If it does then lagfix is enabled. If you do not see Ext4 and it says rfs still then it is not enabled.
will2live said:
Go into a Terminal Emulator on the device and type Mount. 3rd or 4th row on the list should show ext4. If it does then lagfix is enabled. If you do not see Ext4 and it says rfs still then it is not enabled.
Click to expand...
Click to collapse
Well it's definitely enabled. I just must have set the CPU settings poorly because this thing is crawling right now, I can't even scroll through the app drawer!
I've been trying to CWM back to the other PBJ kernels however my phone hangs on reboot, I'm guessing because those need to be flashed with Odin.
asenduk said:
2k+ on quadrant @ 1.4ghz... Niiiiice
Thanks imnuts
Click to expand...
Click to collapse
I wish I knew what I was doing wrong.. running at 1.4 and my quadrant scores are exactly the same.... not that it really matters but still...
imnuts said:
. I don't personally use this because I think overclocking is useless.
Click to expand...
Click to collapse
Just curious as to why you think it's useless. I am sure you know some thing that I don't so your opinion matters to me. I love the fact that I can overclock, but if it's not needed then I might not bother. I know it did make a difference for my DX.
das7771 said:
Just curious as to why you think it's useless. I am sure you know some thing that I don't so your opinion matters to me. I love the fact that I can overclock, but if it's not needed then I might not bother. I know it did make a difference for my DX.
Click to expand...
Click to collapse
Use a program like CPUSpy that shows you the clock speed stats of your phone. >75% of the time, it will likely be in 400MHz or less, this probably approaches >90% if you say 800MHz or less, especially if you are not a heavy user. At that point, why overclock your phone? To get the overclocking stable, you need increase voltages across the board, and despite undervolting, you'll never get the same power usage as you can with a non-overclocked kernel as some of the voltage changes you can't revert. My opinion is that while overclocking can smooth some stuff out, for most day-to-day usage, it has no practical benefits and only causes more battery drain than you would otherwise have. Given how precious battery life is these days, why knowing make your battery drain faster?
it's funny you say that becuase i noticed with ludeboy's kernel that when overclocking system panel very rarely showed my phone running over the stock speed. Usually it was as you stated some where around 800mhz..I understand what your saying...Thanks for the quick response.
So what if we run stock clock...but undervolt? Do you think we will see any batt savings?
Backup SD and app data b/c crashing/freezing can corrupt files.
Edit: Also keep Voltage Scheduler Remover on your phone just in case.
1600
1500
1400
1300 -0
1000 -25
800 -50
400 -75
200 -100
100 -150
"interactive" was unstable a couple kernels ago so I haven't tried it.
suzook said:
So what if we run stock clock...but undervolt? Do you think we will see any batt savings?
Click to expand...
Click to collapse
Potentially, yes, but you may lose stability.
Awesomeness
I love it. I can deal with a slightly shortened battery life. I wanted to OC because a lot of the more intense games don't run as smooth as I would like. With OC, its all butter. Thanks!! I have mine set at 1400, and it really didn't improve my quadrant scores, but there's a noticeable decrease in lag going from one app to another.
suzook said:
So what if we run stock clock...but undervolt? Do you think we will see any batt savings?
Click to expand...
Click to collapse
You would see better battery life at stock clock speeds if you just used the standard (ie. not overclocked) kernel I built.
Just wondering if you're going to branch off development of PBJT w/o overclocking separately - or if this is going to be built/rolled into future releases?
I'm on board with not thinking it's necessary - though I can see how the tinkerers and speed demons would love it. (And all the more power to them, literally)
I don't know imnuts, I always noticed when I forced the phone into a higher overclock it always seemed quite a bit snapier.
Keep it on conservative. Interactive is buggy.
ZeppelinJ0 said:
Could you cuties advise on what sort of settings you're using for this?
I'm using the 'vr' setting with an Interactive governor at 1.1GHz and my phone is slowing to a crawl so it's hardly usable. I'm not looking for any crazy overclocking just something to keep my phone snappy whilst I keep in touch with my prostitutes and be sure they are working the proper street corners.
The weird thing is I'm not sure if Voodoo Lagfix is enabled. Voodoo control says yes, CWM says no and won't let me enable it that way, is there a way to be sure?
Spanks!
Click to expand...
Click to collapse
underscored said:
Just wondering if you're going to branch off development of PBJT w/o overclocking separately - or if this is going to be built/rolled into future releases?
Click to expand...
Click to collapse
This will remain separate from the standard kernel most likely. I will see if I can build off of this source without overclocking and have it work, though I don't know if it will. I want to keep them separate for stability and battery life reasons.
Since i installed cm7.1.0.1 my battery drains very fast
I went ahead and downloaded the MATRIX 9.5 CFS Kernal
now my question is what apps are used to modify the voltages and such for this
what are the best settings as well
Im a heavy Txt/Whatsapp/line/tweetnerd
thanks!
Use setcpu...
but for me...Just use custom voltage from matr1x...It is enough UV already...probably you will have hang or reboot if UV more....
If you really want to tinker with the voltages, search for proton voltage control from the Market or check out this thread http://forum.xda-developers.com/showthread.php?t=1091382. Matr1x voltage settings are pretty low as is so I can only suggest using this app if you want to bring them up.
Yeah, make sure to raise em incrementally... maybe +5 each time?
If you need any help feel free to post in the Matr1x thread as well
Please post your Infusion-Z and Zen kernel-related questions here...
Reserved
for future use
Tips, Tweaks, etc...
performance and battery tweak #1 - best antutu score - 4072
in testing the 2nd update of the infusion z kernel i came up with a configuration that consistently performed well on benchmarks (and in real phone use too!). I figured i'd share it here for others to try. (standard disclaimer from kernel thread still applies - you bork it, you bought it - not me). Feel free to post your experiences - any improvements i can confirm will be posted here..
flash coreA-16 kernel
in cwm, enable voodoo lagfix and system conversion
in phone cpu manager (i recommend voltage control) set the following:
- max to 1600 (minimum to 100)
- i/o scheduler - cfq
- governor - ondemand
- voltage - enable 1600 setting
- voltage - set undervolt to -50 across the board
- apply settings, then touch the menu key to save boot configuration
Click to expand...
Click to collapse
install adrenaline shot 14
- run only scripts 00, 01, 03, 04, 05, and 08 (others can be moved from /system/etc/init.d to your sdcard in case you want to try later).
run antutu benchmark...
Click to expand...
Click to collapse
Click to expand...
Click to collapse
.•..•••..••.••••.•••.•••..•......••••..•.••.••••.•••.•.•..•..•••.•••..•..••..•.•..•......••..•...••.••••.••.•..•.••.•••..••..•••..•......••.•..•.•••.•....•......••.••••.••.•••...•......•••.....•••.•.•.•••..•..•••.....••.••••.•••..••.••..•.•..•.•••...•......•..•....••.••••.•••.•••..•......••.•.•..•••.•.•.•••.••..••..•.•.••.•••..••.•..•.••.••...••..•.•..•.•••...•.........••.•....•.•.
Any plans for ICS kernel
Aeonit said:
Any plans for ICS kernel
Click to expand...
Click to collapse
As soon as Samsung releases source for one I'm all over it
I wouldn't hold your breath though...
I know you know this , but for other readers: CM9 / AOKP threads have "ICS on Infuse" options in development. The Infusion-Z kernel is GB, intended for Samsung "stock" based ROMs.
entropy dd charging tweaks!! can't wait!!
Just wondering... its helpful for me and probably not anyone else lol but is there av out functionality?
There is AV out via the MHL to HDMI adapter that plugs into the usb connector. If your target device does not support HDMI there are converters available that should get you what you need.
If you are looking for something else, please reply with more specifics.
Zen Arcade said:
There is AV out via the MHL to HDMI adapter that plugs into the usb connector. If your target device does not support HDMI there are converters available that should get you what you need.
If you are looking for something else, please reply with more specifics.
Click to expand...
Click to collapse
I will look into that thanks... anyway like i mean through the headphone jack, like the original galaxy s phones did. I would provide you a link, but am currently up extremely late doing homework. I think our devices are capable of doing it, its just the addition was never added to the kernel.
Hi Zen
You can also throw us "Zen ROM" fully tweaked with your kernel.
What kernel to use with AEON ROM?
Forgive me for asking, but before I flash, I'd like to know what kernel users would recommend flashing for use with AEON ROM? And for my own edification, why do you recommend it? I'm still trying to get my hands around the difference between a ROM and a kernel.
Thanks,
atk
These kernels can be used on any Gingerbread based Roms for infuse.
please visit this link for further clarifications specially designed for new users. http://forum.xda-developers.com/showthread.php?p=22913686
Aeonit said:
These kernels can be used on any Gingerbread based Roms for infuse.
please visit this link for further clarifications specially designed for new users. http://forum.xda-developers.com/showthread.php?p=22913686
Click to expand...
Click to collapse
Fair enough. Thanks.
atk said:
Forgive me for asking, but before I flash, I'd like to know what kernel users would recommend flashing for use with AEON ROM? And for my own edification, why do you recommend it? I'm still trying to get my hands around the difference between a ROM and a kernel.
Thanks,
atk
Click to expand...
Click to collapse
There are kernels based on source code released by Samsung, intended to be run with ROMs based on Samsung source. There are also kernels based on the Android Open Source Project (AOSP) that will work with ROMs developed from AOSP sources. You cannot run an AOSP kernel with a Samsung-based ROM and visa versa.
In general, kernels are what manage the phone hardware and provide a common interface to the ROM and applications running on the phone.
If you are running Aeon you have two kernel groups to choose from: Entropy's daily driver - better on battery and includes fast charging hacks, or Infusion - geared more toward faster performance with overclocking. With updates in the past two months both provide most of the features available in the stock kernels along with being rooted to support custom ROMs.
You can click on the "ISET" link in my signature to get to the "super everything thread" with links to all the options available fo the Infuse.
Or, if you want to keep it simple, just flash Aeon and use the kernel that comes with the ROM.
Aeonit said:
Hi Zen
You can also throw us "Zen ROM" fully tweaked with your kernel.
Click to expand...
Click to collapse
It's #2 on the list
Zen Arcade said:
flash coreA-16 kernel
in cwm, enable voodoo lagfix and system conversion
in phone cpu manager (i recommend voltage control) set the following:
- max to 1600 (minimum to 100)
- i/o scheduler - cfq
- governor - ondemand
- voltage - enable 1600 setting
- voltage - set undervolt to -50 across the board
- apply settings, then touch the menu key to save boot configuration
install adrenaline shot 14
- run only scripts 00, 01, 03, 04, 05, and 08 (others can be moved from /system/etc/init.d to your sdcard in case you want to try later).
run antutu benchmark...
Click to expand...
Click to collapse
I have better values using noop and conservative. But my current high antutu score is 3911.
With cfq and ondemand - 3751
Still- 3911 is pretty great!
EDIT: But 4060 is even better! Still noop and conservative with -50mv down the line.
I use aeon and your newest kernel a oc to 1600 uv -50 all the way down,
when ever I play words with friends after I make a play and the ad pops up I click okay then it usually freezes up and get a black screen and I have to hit back a few times to get out and eventually get a fc screen then it works again.
Same thing if I go open a text message while playing for example and try and go back to words with friends it freezes up again..
What could be causing this?
It doesn't really do it with entropys dd just this one, it also does the same if I don't oc and leave it at 1200
Any ideas? Thanks
Sent from my SAMSUNG-SGH-I997 using XDA
csaint422 said:
I use aeon and your newest kernel a oc to 1600 uv -50 all the way down,
when ever I play words with friends after I make a play and the ad pops up I click okay then it usually freezes up and get a black screen and I have to hit back a few times to get out and eventually get a fc screen then it works again.
Same thing if I go open a text message while playing for example and try and go back to words with friends it freezes up again..
What could be causing this?
It doesn't really do it with entropys dd just this one, it also does the same if I don't oc and leave it at 1200
Any ideas? Thanks
Sent from my SAMSUNG-SGH-I997 using XDA
Click to expand...
Click to collapse
1. dont undervolt.
2. your phone may not be able to hand the oc to 1.6 ..try Zen-B 1.4
My phone has worked fine oc to 1600 before, and if I don't uv my battery life well suck..
Maybe I'll give b a shot..
Just seems multi tasking bogs down some could be a combination of tweaks conflicting, I'll try b or not oc with less uv and play around till something works
Sent from my SAMSUNG-SGH-I997 using XDA
csaint422 said:
My phone has worked fine oc to 1600 before, and if I don't uv my battery life well suck..Maybe I'll give b a shot..
Just seems multi tasking bogs down some could be a combination of tweaks conflicting, I'll try b or not oc with less uv and play around till something works
Sent from my SAMSUNG-SGH-I997 using XDA
Click to expand...
Click to collapse
I have never been a fan of oc...I have so many that love to oc their phones, pc...so on...imho oc degrades your hardware, sure you rocking it while it lasts on 1.6 + oc, and sure the phone can handle it, when it can. but just like any type of hardware i.e. computers, phones and so on, your gonna bring the hardware down. And will wear out....imo.
Not saying you should or shouldn't, just a thought, I can't afford to degrade my phone or computer, so I just run it at speeds that it was designed for, but even flashing custom rom is not safe either...so I understand the need for speed, but if your gonna fly....ensure you have parachute just in case you crash and burn... Ok enough of my old man talk...