I have read enough threads on diverse topics to gather that flashing a custom kernel carries with it some benefit.
I read about faux123's kernel and found the original thread from February. I was going to flash that, but thought I would ask if that version (in that thread) is the latest.
Currently running CM7.02 (last update, no nightlies right now). So obviously, ny current kernel is whatever CM current kernel.
Also, if anyone has opinions on other kernel's (GB at least) besides the one which faux123 has compiled, and which they had a positive experience using, I'd be interested to hear about it.
Faux is basically the kernel God here lol but which version is it? The latest is 2.5.3 if I remember correctly
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EDIT: I found v. 2.5.2 and flashed 2.4.8 and then 2.5.2.. Using CFS SV. AWESOME... so far!
OK... well this is where I am having difficulty. I found the OC kernel thread but the link in the post is for a RC3 (version is <1). Also, in this thread re the OC kernel, it did not state it would apply to CM7, but since I know faux is using parts of CM7 for his kernel, I can only guess this would be fine. Can someone confirm this?
Another thread re faux's kernel had both the CFS and BFS kernels, and here the version was 2.5.2. And with regard to this non OC kernel, is the speed on the CFS good pretty good with good battery life... provided, I gather, I set the speed to "interactive"???
There are just a lot of different threads re what seems like a lot of different kernels, so I am trying to get just a little better idea at what version (and where the thread for it is) would be best.
I pretty much use my phone 45 minutes out of an hour. But, I have only had it unplugged for 2 hours a day on average since I got it. I expect to be using it off the AC or USB charger for more like 6 hours/day though... I just want to make sure the battery isn't 25% after 3 hours.
I didn't want to start a new thread so I hope someone sees this....
But its been about 12 hours with faux's 2.5.2 kernel, and it is great except its really hot by the battery. Anyone else notice this? I have it set to interactive, and an OC stop at around 1600 MHz...could this nd too high?
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Related
Most of what is below is still accurate, but see this post for links to the kernel download and important infoshttp://forum.xda-developers.com/showpost.php?p=12397646&postcount=580
1-18-11
v.4 - GB’s Impressive Sounding Name Kernel
* As always, many, many thanks to xcaliburinhand.
* Consolidating Steam and Voodoo/CWM kernels into one thread. The two kernels are the same except for recovery, and jfs support in the Steam kernel.
* Started using a proper changelog
* Implemented Impressive Sounding Name Technology AND Dynamic Naming Technology patches; next update to include Dramatic Use of Imagery, with possible Reference to Mythical Creatures patch.
* Cherry-picked some recent commits not included in JPX source. (Will post source this evening, I hadn’t planned on releasing this just yet, but it seems as though it’s already being packaged into a ROM so might as well, right?)
* CONFIG_ARM_THUMBEE=y, enables ThumbEE processor mode, should give some minor JIT performance improvement.
* config_hz=100. With this value, kernel hz = user hz which eliminates HZ <--> USER_HZ conversions. It should also slightly increase battery life without affecting performance.
* Increased default overclock to 1280 MHz. Your may want to revise your undervolt settings, 1280MHz runs at the same voltage as 1200MHz did/does, so you **may** not be able to undervolt as much at 1280. (Yes, I previously said I wouldn’t go past 1200MHz, but, I feel ok going to 1280 since the voltage hasn’t changed and it’s still well below the max vdd_arm.) Use voltage control or setCPU to limit clock speed if you don’t want to use this. Delete your Voltage Control boot settings before booting this kernel. I’m currently using Voltage Control 3.0a.
* Added Voodoo Sound. I hadn’t really planned on it but there were a lot of requests for it.
* Removed i9000 splash screen and replaced with an old familiar one.
* Want lower screen brightness? I know Hardcore did tinkering with the kernel source to do this, but I really like Screen Filter, it even has a Tasker plugin.
* From previous versions: Backlightnotification 2.3, Voodoo color/video fixes re-enabled against my better judgment and even though single-blind testers couldn't tell me which kernels had it and which did not. .
Downloads of v.4 - The file you want is something like rGB-v.4-011811-XXXXX.zip/tar
By clicking any of these links, you agree to flash delete your Dalvik cache and remove any oc/uv boot settings you have before booting. v.4 ClockworkMod zip at the bottom of this post, tar files of Voodoo5/CWM and Steam below for those of you who like to use Odin.
tar of v.4 with Voodoo5 & CWM recovery
tar of v.4 with Steam recovery
Credits
Xcaliburinhand, supercurio, raspdeep, SztupY, sorry if I forgot anyone else.
Stuff I wrote a while ago and may or may not be accurate any more.
1-6-11
This seems to be stable again. Started over from scratch and added in BLN 2.3. Everyone who was affected by charging problems with the previous kernels has not had a shutdown over the last two days of testing. Hopefully we're good again.
1-4-11
Closed testing on newer kernels until I'm fairly confident the issue is resolved again. I had still been getting intermittent reports of charger instability from the reoriented-balls-1-3-11-ocuv-bln23.zip (#47) kernel. Anyone affected by this please switch back to the 'f' builds below, which is the last known rock solid (I think) version.
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This kernel is fast, and this kernel is stable. It's overclocked by default to 1.2GHz, but if you don't want to overclock at all, just install either setCPU or download xan's app which I have attached to this post and set the max clock speed to 1.0GHz. This kernel supports init.d scripts, so you have save your settings and have them load at boot.
1100-1200+ Quadrant score on RFS at 1GHz. 1500-1700+ on /data, /dbdata, and /cache on ext4. ~14.1 Linpack at 1GHz. Compare that to any other kernel available here at the same speed and I think you'll see this one comes out on top. I'm not doing this for donations, I just want to my experience with the phone as good as possible. Since this is a Voodoo 5 kernel, you can also make /system ext4 as well for an even smoother experience. This kernel has great battery life and is very stable as well. And when I say stable, I mean, you can use the phone however you want to, you don't have to do any workarounds to keep it from freezing. (edit - as long as you're using one of the build f kernels it seems...) Although, as always, if you aren't 100% satisfied with any of my products, I will give you a full refund.
What this kernel is -
Kernel for 2.2.1 ROMs, (may work on 2.2, but I haven't personally tested it), built from JPX source, with Supercurio's Voodoo 5, overclocked by default to 1.2GHz with raspdeep's code, and Neldar's backlight notification enabled, and re-oriented with xcaliburinhand's code. The undervolting code has been fixed to keep your phone from dying while charging. I'll not be supporting anything beyond 1.2GHz. I hardly use 1.2GHz myself, and from what I've read, many users (but obviously not all) have stability issues with anything much beyond that. This post from one of the senior Android engineers at Google also struck a nerve with me, and is also part of the reason I'll not support anything past 1.2GHz. Samsung actually wrote most of the code for 1.2GHz into the kernel source but had it commented out, so I don't have a problem providing software that will allow users to push it to that level.
Again, for voltage control, use xan's app. I've attached an older version of the app as I'm not sure if the newer one is backwards compatible with the 'older' methods of power management.
Also, standard disclaimers about how if this blows up your phone or tells your girlfriend she's getting fat, it's not my fault. I've had this kernel on my phone for a couple days, so none of that should happen.
How to install - Either flash in ClockworkMod, or use Neldar's really awesome kernel flashing app.
gb-reorient-12-23-build-f.zip is a zip tarred zImage. Unzip, then flash the tar with Odin, or extract the zImage and flash it with Heimdall or Neldar's kernel flashing app.
gb-reorient-fixed-ocuv-f-cwm.zip is a ClockworkMod flashable kernel.
Some thoughts on undervolting
The whole point of undervolting is to safely do the same amount of work with your CPU while using less energy (ie more battery life). Your phone is idle most of the time, so you can the most from undervolting lower frequencies more. Undervolting is safe WHEN you find the settings that work for your phone. Generally, -75mV seems to be stable for everyone. If you want to push it further, go ahead, but realize that if you push it too far, you phone will freeze, and you'll have to pull the battery. Relatively harmless, but, be aware it can happen. Personally, my phone is perfectly stable at the following settings (from 100MHz to 1000MHz) -125mV, -100mV, -100mV, -100mV, -75mV. These settings may not work for your phone. You might find that you can get by with undervolting a little more, but your system will freeze randomly, so if that happens, don't undervolt as aggresively. So, for example, I found that I can usually get by with -150, -125, -125, -125, -100, but every once in a while the phone will freeze up. And since I want a stable system, I've backed down from that. I can't tell you what to do though, but keep in mind that undervolting too much may lead to system instability.
- If you still want to try to find a oc/uv kernel which works for you, don't undervolt at all and tell me if it still happens with kernel #7 (12-23 build from my other thread). As far as I know, no one has had an issue with charger instability on that kernel. If it does still happen, I need to know the kernel version # and for good measure, the production code under your battery (can someone tell me what the name for this is again, I don't feel like shutting off my phone to check), it will be a number like 08.10, 10.10, etc.
- If even with the 12/23 build f kernels and not undervolting at all, you're still get shutdowns when charging, you probably want to get a different kernel. If you insist upon using that one anyway, try charging via USB instead of the wall outlet, it seemed to happen less frequently on older kernels, and I haven't had a charge death in weeks now, so, I'm good at least.
- See if your phone is one of the ones being recalled. If your phone is under recall and these don't work for you, I'm not sure what else I can do.
- These fixes work for me and a lot other people who had the same problem with other oc/uv kernels. Like I said, we're running these out of spec, so a few unlucky souls might not have phones that can handle this. Or maybe some of these kernels have been sprinkled with pixie dust and others haven't. If you find a different kernel that works for you by all means use it. It's all about choice people.
Thanks. Going to try it now.
I flashed 'em at 94%, so we'll see.
But FWIW- I think I've had MAYBE 2 charge deaths when I was on perception. But I was using Setiron's kernels, so I dunno...
I'll report back in a bit.. gonna let it over-charge for a bit and see what happens.
Darky 7.0.1 with your kernel and 100% battery power for 2.5 hours plugged in to the wall and no power off yet. Hopefully this is the fix, I am tired of leaving my computer on all night to charge on usb
thank you so much for this...been looking for something exactly like this, and seems sleep death is gone
darky 7.0.1 here also.
I had it charge around an hr and a half past 100% and no death!
So we'll see how it does overnight
I'll try it out and let you know how it goes, i charge by ac overnight so I should have the results of it to you by morning I'm using it with Assonance 5.2 by the way.
Well no charge death for me last night...
Sent from my GT-I9000 using XDA App
Absolutely no problem, left on ac all night with an undervolt and everything. Great job with this, it made oc/uv usable for me.
Doc's 6.1.3 + your kernel = 100% joy
I found your thread last night after a long and happy Christmas day with the family. Followed your instructions to the letter. Charged overnight from 45% and woke up to find the phone operating fine. This might be the answer to all our prayers!! Thank you so much!
Runs great with eugenes ginger clone. Slightly better benchmarks than other rom/kernel combos. I peak out at 1.3ghz so 1.2 seems like a good medium. One request though is to look into changing the divider for the gpu. I know we don't need it but its good for bragging. Unhelpful had this and I could set the gpu down to 166.750 For lower clocks to save battery and up to 222.334 (stable) for benchmarks. I never tried other clocks so I don't know if it would work on other settings. It depends on how his code works. but it seems by my math the gpu is divided off a 2000 or 2001mhz frequency. There is a margin of error I guess. and stock is divided by 10. In unhelpfuls code it is divided by 9 (222.334) default but could be set to 10 or 12. If we bump that up to 15 or 20 we might reduce battery consumtion with a gpu clock at 133 or even 100mhz. Id also like to try the divider at 8 for 250mhz. Im curious as to how that would benchmark if its stable.
Sent from my SAMSUNG-SGH-I897 using Tapatalk
Ive been charging since 2pm yesterday and its still on. I think you got the fix
No problems here charging overnight. For those who care about quadrant scores, mine was about 250 points higher than the other 1.2ghz kernel I was using.
I get better quadrant scores too vs.my setiron 1.47 1200 kernel. I don't know if it's due to this kernel, but for some reason I'm getting much better battery life since flashing it.
opcow said:
I get better quadrant scores too vs.my setiron 1.47 1200 kernel. I don't know if it's due to this kernel, but for some reason I'm getting much better battery life since flashing it.
Click to expand...
Click to collapse
Same here, battery life seems better..I've noticed it not draining so quickly, im at 85% when usually id be at 50-60%
Sent from my Captivate
I've found Darky's 7.01 works best on my phone, could it be true this makes it run faster? Do I need to have full charge or can i flash this at any battery level?
I didn't look at the actual quadrant score. But my fps is on average about 2-3 greater. Similar to running at 1300 on other kernels. Battery life is much improved over the kernel in eugenes ginger clone rom.
Sent from my SAMSUNG-SGH-I897 using Tapatalk
I just flashed it over SetiroN 1.5.6 and can see a speed difference already. 1200 O/C is perfect, I really like the kernel. Working great on Darkys 7.0.1
I too just installed over Darky's 7.0.1, bit more speed is noticable but i mainly did it for the possibility of better battery because right now thats all i am after.
i just installed but i want some more about voltage control
how can i modified that option?
thx a lot!
How many .35 kernels are available? I'm only aware of Umaro's and the stock CM kernel. I'm trying to achieve better battery life, so what kernel are you guys using?
So far, using Umaro's, I'm getting regular battery life, nothing special. Haven't tried the stock CM kernel.
Are they any other undervolted kernels available?
durps said:
How many .35 kernels are available? I'm only aware of Umaro's and the stock CM kernel. I'm trying to achieve better battery life, so what kernel are you guys using?
So far, using Umaro's, I'm getting regular battery life, nothing special. Haven't tried the stock CM kernel.
Are they any other undervolted kernels available?
Click to expand...
Click to collapse
There aren't any others so far. Umaro's kernel is really good for battery life, however it's not up to date with the latest kanged nightly from yesterday.
Ahh, I see. Thanks for the info.
What cpu settings are you running?
durps said:
Ahh, I see. Thanks for the info.
What cpu settings are you running?
Click to expand...
Click to collapse
Right now I'm using a kanged nightly with the "stock" cpu settings of 245MHz min and 1024MHz max, but with the interactive governor. With Umaro's kernel I had at 245 min, 1017 max and the Smartass governor. The smartass is pretty good on battery.
u made all the right moves all i would do is dim screen and keep runnimg apps low.
pimped out g2
btw pyromod 2.0 345 ghz min 1405ghz max on smartass. i fully charge bout 1 a day
pimped out g2
Pershoot released his kernel the other day pretty nice and smooth
Sent from my HTC Vision using XDA App
Alright I'm sleepy so this will be in rambling form but...
I've tried Umaro's and I'm not sure if it was the undervolting (which I haven't looked into tweaking) but my phone kept stuttering no matter which governor I used. I was using Htcclay's Super CM7 1.8 with cpu set to 245/1113
I also used the stock kernel that's been on CM7 with no problems and average to good battery life (10-15 hours of active use: texting, browsing, few calls, and playing the occasional game)
Most recently I've used Pershoots which I had heard worked great. I myself love it. Almost same battery life as stock kernel but everything felt just a little bit smoother performance wise.
Here's a link to Pershoot's thread:http://forum.xda-developers.com/showthread.php?t=847672
The stock cm kernel in my opinion is finally good enough that it doesn't need changed. I have always flashed pershoots and occassionally others, but it truly does not need supplemented IMHO.
Sent from my HTC Vision using XDA Premium App
I'm using savaged zen, and I get around two days of battery on a charge, with normal use.
Min: 368 max: 768
Sent from my HTC Vision using XDA App
Using Pershoots latest kernel, have nothing but good things to say about his kernels. Always my go to kernel.
fedtemis said:
I'm using savaged zen, and I get around two days of battery on a charge, with normal use.
Min: 368 max: 768
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
You're running that on Vision? I can't seem to find it for our device.
Stock CM7 kernel here. I run 245/806 Interactive with automatic brightness. I've found that when wifi is on, keeping the cell radio @ 2G only works wonders. Wifi is set to sleep on screen off, but not when plugged in. 1 day 7 hours on this charge so far with 23% left. I would consider my use light to moderate.
HTC Vision (G2) - CM7 B95 w/AUS radio
Your is not short for you are, but you're is.|It's means it is and never ever anything else.|Pluralization by way of an apostrophe is always wrong!
durps said:
How many .35 kernels are available? I'm only aware of Umaro's and the stock CM kernel. I'm trying to achieve better battery life, so what kernel are you guys using?
So far, using Umaro's, I'm getting regular battery life, nothing special. Haven't tried the stock CM kernel.
Are they any other undervolted kernels available?
Click to expand...
Click to collapse
I'm wondering where can I download the Umaro's kernel. I check out his github (https://github.com/umaro/htc-kernel-msm7x30) only to find out that the source is available.
Hello, first of all this is my first post and thread. I have read the rules and searched for a similar thread. I am not stupid and I know how forums work. Now my question is: Which is the most performant kernel for the MT4G?
Know to be more specific, I am looking for a kernel which a very high OC and UV rate. I want something that can easily manage clock speed when it needs it the most. I am interested in genereal boosts of speed, higher I/O managing speeds, better gaming experiences and a longer battery life. I know that the kernel doesnt do all of that but it has a major impact those aspects. I am running CM7 nightly 144. Im hesitating between Faux123 Cm7/AOSP 2.6.35.13 kernel (http://forum.xda-developers.com/showthread.php?t=1113697) and thederekjay 2.6.35.13::demonSPEED INSANITY kernel (http://forum.xda-developers.com/showthread.php?t=1113554). I appreciate anykind of constructive feed back
I personally use demonspeed-insanity. It'll clock up to 1.8 atm. Couple that with the SMARTASS governor and you get a pretty decent balance of battery life to performance.
can't go wrong with either kernel, i've used both and their both outstanding in performance and battery life.
Sent from my HTC Glacier using XDA Premium App
Thanks for the feedback guys . I'll probably try both of them. I'll post some quadrant benchmarks and battery life results.
Faux 123 1.0.7 is the best IMO, great uv and quadrant scores, got 2600+ on stock and battery life is great.
I have used both kernels and got great battery life from each one. I prefer Faux's kernel for AOSP roms, and thederekjay's kernel for MIUI roms. Faux updated his kernel to OC @ 2.03ghz and its blazing fast
Faux's all day!!!!
He has put in the most work and has the best performance by a wide margin.
I'm currently running turl1's v8 with the kernel that comes with it. I've read about people having this issue with faux'd kernel and that they fixed it by using the one is turl's build. I've attached a pic of the Time in State screen from SetCPU.
Sent from my MB860 using XDA
I am using jokersax 0.3.1. Same issue.
do you guys have profiles set?
Only based on temperature. Do you?
I have profiles set when the screen turns off and such.
I still have idle problems, but its masked a little if you underclock to 912. and with hardware acceleration you can hardly notice it.
I I did have the idling problem with previous builds so I switched to turls1's. When the new 0.3.1 came out I switched back. I also changed from setcpu to antutu cpu master pro, and now it idles correctly.
I'm using turl1's V8 Kang with faux123 025 beta kernel (1.0Ghz), and here is my CPU freq for something like a week.
I use a profile for screen off- 216-608.
Now mine looks a lot better. But I didn't change anything..??
I'm not using a profile on mine either. I think I'm going to try faux's kernel and see if it improves any. I think I would get fairly great battery life if I could resolve this issue. I got down to only 84% after moderate screen time and video and music playback today with over 8 hours off of the charger. Most time was spent in 312Mhz with 608Mhz being the next highest and 216Mhz as the third.
Sent from my MB860 using XDA
My cpu seems to be working great on turl's v8 with the default kernel. I was getting pretty poor battery life on joker's ROM, but on Turls v8 I'm getting the best I've ever had; stock or not.
Sent from my MB860 using XDA
Running Jocker's latest with the latest Faux 1.3GHz kernel.
Idles mostly at 456MHz.
Something wrong there.
After flashing faux's 1Ghz kernel and setting a profile for screen off @216Mhz it has greatly improved. Although it seems any time the screen is on it never hits 216. My battery life didn't seem to get any better either which I find odd.
Sent from my MB860 using XDA
another vote for turl fixing batt life.
No idea why some people are so good on faux's but a large proportion have these massive problems.
I switched to turls v8 with the kernel it comes with and now my battery life and cpu usages are great!
told ya, mine looks around the same
tried to feed it back in jokersax forum, not sure if he's picked up on it or not, theres plenty of people saying 'great batt life' but theres enough of us out there who aren't getting that (and whom get decent results with turl). Maybe there are subtle hw differences in certain batches or revisions of the SoC or something like that.
rmkilc said:
I switched to turls v8 with the kernel it comes with and now my battery life and cpu usages are great!
View attachment 936522
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I've never seen my atrix idle like that.
are you sure? Mine idled similar to that in CM7, now CM9 turl build.
In jokersax build (stock kernel) 0.2 I never got below 456Mhz consequently heat and battery died in ~10% an hour increments even if I didn't touch it
I have installed RR v2.6 and when choosing customized installation there are FLUXI / CM9/ siyah kernel option.
Since I am new to the ROM world my question is which kernel is to preferred when it comes to stability and battery drain for this ROM ...
I have Samsung S2
I've been using siyah kernel for the last few weeks on different versions of resurrection, however for this one I'm using the fluxi kernel to see how it goes. Remember that you can't accurately judge how good the battery life is until a few charging cycles have passed.
I'm using cm9 and not had any problems so far. Not quite as smooth and lag free as siyah or fluxi but battery a bit better, plus music on power amp seems to sound a lot better/bassier. Might be placebo but I like it lol
Sent from my GT-I9100 using xda premium
First off questions go in Q&A but this thread should not exist see this. Locked
Cheers