My phone can't handle non stock kernels? - T-Mobile, Samsung Galaxy SIII

Hello fellow XDA brethren! ​
I am reaching out to whomever may be able to give me an "advanced" type of explanation in regards to
modified kernels being applied to my phone.
T-Mobile Galaxy SIII (32Gb White)
I seem to be having issues with many of the kernels offered by some of the excellent developers in the t999 forum.
Namely, ktoonsez, and the other famous dev who's name escapes me right now.
When I flash kernels like those above, my main symptoms are:
Artifacting / Glitchyness in GUI.
Now... I know that some kernels are geared towards battery life and are undervolted to a point, I've tried everything,
volting back up. I've been flashing every one of them properly as well. I know that people say "all phones aren't created
equal", but i refuse to believe that mine is so whack that I cant even use anything other than stock kernels.
I firmly believe that these symptoms are from GPU overclocks that my phone simply cannot handle, (explains artifacts?).
I can use different roms with their respective kernels such as CM10, and a few of the other popular TW roms that are offered.
Here's what I was wondering:
Is there any application that I can use to control GPU overclock (to see if tweaking with this fixes it, to narrow it down
that my phones GPU is just very sensitive)
Are there any kernels out there for touchwiz that give me some nice benefits that dont have any GPU overclock?
What other methods can I fool around with to see exactly what part of my phone is weak?
Any suggestions are appreciated!
I get LOUSY batterylife / performance on tmo stock kernel.

If it were a PC, the first thing I would suspect of causing the artifacting issue is bad video memory. Combine that with the poor performance on stock, it stands to reason that you may have gotten a bad phone from the factory. I would suggest that you consider simply having it replaced under warranty, if you do have bad RAM in the phone the problems will only get worse.

Related

[Q] (Q) ROMs and Kernels

Hey,
So sorry for what probably seems like a dumb question. I'm usually a Vibrant guy, but I'm helping a buddy out with a G2/looking at the feasibility of getting one myself. I know at least for the Vibrant our normal kernels don't play nice with our version of CyanogenMod 7. I was curious if the same held true here? Or can I flash any kernel? Also, I see that there are different types based on the type of ROM, which is a new thing to a Vibrant owner. So can anyone recommend me a kernel? I'm pretty decent on flashing and all that, and recovering a brick (at least with my Vibrant). Basically I want the best bottom-line performance. I don't need extra bells and whistles, just a nice high clock frequency. Thanks!
-MN_Vibrant
MN_Vibrant said:
Hey,
So sorry for what probably seems like a dumb question. I'm usually a Vibrant guy, but I'm helping a buddy out with a G2/looking at the feasibility of getting one myself. I know at least for the Vibrant our normal kernels don't play nice with our version of CyanogenMod 7. I was curious if the same held true here? Or can I flash any kernel? Also, I see that there are different types based on the type of ROM, which is a new thing to a Vibrant owner. So can anyone recommend me a kernel? I'm pretty decent on flashing and all that, and recovering a brick (at least with my Vibrant). Basically I want the best bottom-line performance. I don't need extra bells and whistles, just a nice high clock frequency. Thanks!
-MN_Vibrant
Click to expand...
Click to collapse
If you're looking for a kernel for CM7, the kernel included is quite snappy though I personally run pershoot's kernel as he undervolts and has some other tweaks which improves responsiveness *and* battery life, at least for me.
Sent from my HTC Vision using XDA App
CM7 already comes with its own custom kernel (which also supports some overclocking), so no need to flash a separate kernel if you don't want to. But as already mentioned, pershoot's works well too.
You can't flash any kernel. Some are Sense specific, and some are for non-Sense ROMs. Flashing the wrong one for your ROM can apparently brick the phone, so read thru the threads for the ROM and kernel you are interested in, to be sure. The ROM developer will usually have kernel recommendations, or you can see what kernels users of that ROM have tried.
Like stated above you will need to read the instructions and notes on the kernel thread. CM7 has special requirements. Other Roms don't need. but be very careful on what you flash!

Help with FPS and scrolling laginess, TIPS?

Hello all. I wanted to see if tips could be posted on how to increase scrolling laginess and increase fps in things like video and games. I bought my wife the shift and Ive noticed its alot better at mobile gaiming and video playback/recording.
Ive rooted and installed myns warm two point two along with netarchy-toastmod 4.3.4 cfs havs more nosbc.
Ive overclocked to 1.2ghz using setcpu and left the governor on smartass. (no profiles)
These seem to have made a visual improvement, but I want/need more.
So my questionis are...
Is there specific kernels that will help get the results Im looking for? (Im more insterested in performace, but would like batterly life is possible)
Are there any hidden tips that can be done via command line etc that will change things to allow for a better fps performance?
ANy help, links, etc will be appreciated. Ive been searching for weeks already just to get myself rooted/romed/kerneled.
The Shift has a better processor and a better GPU. I don't think you're going to be able to match it by overclocking. There are ROMs that tend to be a little smoother than others (MikFroyo 4.6 is nice), but there's only so much that can be done with the hardware. The Evo itself is almost a year old, and the QSD8650 SoC it uses has been available since Q4 2008.
sinnedone said:
Hello all. I wanted to see if tips could be posted on how to increase scrolling laginess and increase fps in things like video and games. I bought my wife the shift and Ive noticed its alot better at mobile gaiming and video playback/recording.
Ive rooted and installed myns warm two point two along with netarchy-toastmod 4.3.4 cfs havs more nosbc.
Ive overclocked to 1.2ghz using setcpu and left the governor on smartass. (no profiles)
These seem to have made a visual improvement, but I want/need more.
So my questionis are...
Is there specific kernels that will help get the results Im looking for? (Im more insterested in performace, but would like batterly life is possible)
Are there any hidden tips that can be done via command line etc that will change things to allow for a better fps performance?
ANy help, links, etc will be appreciated. Ive been searching for weeks already just to get myself rooted/romed/kerneled.
Click to expand...
Click to collapse
As bkrodgers said, the Shift has better hardware than the Evo. My roomate has one, and that thing really is smooth, even on the stock rom. It nailed like 1400 or something like that on quadrant, not even overclocked on a stock rom. The only changes I ever make to my phone that affects the scrolling is the kernel. My phone doesn't like havs, the voltage scaling makes it unstable, and it lags severely, on any havs kernel. I get the smoothest experience out of my device from a kernel that has no havs and isn't undervolted. Of course, you get bettery battery life out of a kernel with havs, if your phone can tolerate it. Every phone acts differently on different kernels, which is why there are so many to choose from. So you can find the one that's 'just right' on your device. It takes a little playing around and kernel swapping to find the right combo. And as far as I know, basically all the kernels that have been available for a good number of months now, have the fps fix already baked in. When the Evo's first came out, FPS was capped at 30fps. Since then, all the custom kernels allow for it to go much higher than that, sometimes up to 60fps. I don't believe there's much more you can do with that.
Also, for what it's worth, you might want to try out an AOSP rom. They have much less crap in them, and they tend to run very very smooth (in my experiences). Not to talk down on any sense rom, as I also love sense, and 99% of the time and more than happy on whatever sense rom I happen to be running at the time. Fortunately, the Evo has quite a few selections on roms and kernels, so there is quite a bit of playing around and tweaking you can do, in search of the perfect setup.
thanks I'll probably try miks rom to see how that goes.
I understand about the hardware and that the shift has a better cpu, but is there anything else other than what I have already done to make everything nice and speedy UI wise? I think the biggest culprit is the app drawer being clunky. (like this on the shift as well) No settings in linux that can help there?
Oh and kernels. Ive tried 2 of netarchy-toastmods kernels and havent really noticed a difference. Both have had havs. Should I stay away from these type of kernels to get better visual performance?
ANy other tips on which kernels youve tried and noticed better ui results?
ah yes the elections are great. lol I guess I'll have to try a non havs kernel to see how they perform along with the senseless roms.
Thanks all
sinnedone said:
thanks I'll probably try miks rom to see how that goes.
I understand about the hardware and that the shift has a better cpu, but is there anything else other than what I have already done to make everything nice and speedy UI wise? I think the biggest culprit is the app drawer being clunky. (like this on the shift as well) No settings in linux that can help there?
Oh and kernels. Ive tried 2 of netarchy-toastmods kernels and havent really noticed a difference. Both have had havs. Should I stay away from these type of kernels to get better visual performance?
ANy other tips on which kernels youve tried and noticed better ui results?
ah yes the elections are great. lol I guess I'll have to try a non havs kernel to see how they perform along with the senseless roms.
Thanks all
Click to expand...
Click to collapse
You're welcome. Just bear in mind, that if you do try out an AOSP rom, that they have different kernels to use. You must use a kernel that was made for AOSP on an AOSP rom. So don't go trying a netarchy kernel on an AOSP rom
Also, I didn't have as good a luck with net's 4.3.4 kernel's as I did on the 4.2.2 or 4.3.2. Also the 4.1.9 kernel's worked great for me. For some reason, the newest one's don't give me the best performance.
As far as tweaking things using ADB, I don't think there's anything you can do FPS related. I believe there are ways to adjust the undervolting in a kernel, using adb, and things like that. But as far as I know, the FPS is what it is at this point, although it will vary from kernel to kernel.

Looking for a stable/fully featured ROM.

Hi everyone, my Incredible 2 just arrived and I'm about ready to root it and flash a ROM. I first wanted to try the CM7 stable build because they're "official" developers in my opinion, but I read some posts and there seems to be some issues with various small things. I looked at the nightlies and those still seem to have issues as well. Then I looked over here at the CM7Kangs, but something seems to tell me that CM isn't completely stable in itself. Whether it does or doesn't have Sense, etc. I'm just interested in a new ROM that is stable and fully functional (cameras work, GPS works, etc). The main reason for flashing a new ROM is because I don't want all the bloatware that comes with this thing, and even if it isn't cutting edge, I'm sure it can be faster than stock. Any suggestions guys?
EDIT: I hear Skyraider Zeus/MIUI are good. I found Skyraider Zeus 1.3 on the internet, but what versions of MIUI are stable? I hear this ROM has good reviews too
http://roms.miui.us/ 1.12.9 is stable an totally functional works good with areoevans .7 bfs kernel
---------- Post added at 08:49 PM ---------- Previous post was at 08:44 PM ----------
http://www.teambamf.net/f37/[rom][gb]-skyraider-zeus-1-3-inc2-[update-11-22-2011]-2725/
This is skyraiders link which is a top notch sense rom.
Skyraider's roms are top notch. All the current cm7 kangs work without flaws. Miui12.9 is awesome. Also look into condemned sense rom, any of nits work, alot of people are running mikrunny 3.5
Sent from my Incredible 2 using xda premium
Thanks! Just wondering, is Skyraider Zeus overclockable? I looked at the post and the only kernel it mentions is the "HTC OTA update". IIRC, you need a special kernel to OC, don't you?
Also, my question above is the same for the MIUI 1.12.9 ROM. Can it be OC'd? is it fully stable on the non-aeroevan kernel?
Yes you can us dres kernel found in development forum for skyraiders and miui I recommend using areovans kernel due to stock kernel can cause a few issues (low in call volume and for some data is not reliable)
Sent from my Incredible 2 using xda premium
another vote for SkyRaider Zeus. if you want a ROM you can set and forget, this is it. everything works, except for Verizon's wifi tether in the "quick launch", but that's it. it's just as reliable as stock or better, has tons of features and extras built in. a lot of thought, and time went into this, it is truly a complete Sense ROM.
never tried AOSP ROMs so i can't comment.
good luck in your search. at least try Zeus, you won't be disappointed.
I personally haven't tried miui so I wont comment on that. There are plenty of great roms out there. I am currently using the latest cm7 nightly as my DD (#134 I think?) with excellent results! I cant remember seeing any issues since i flashed it. I am going on nearly a month with zero issues. Before this rom I tried out New To Root's Incredible 2 HD RLS v1.1 which was also a flawless rom from my experience. I had no luck with the RC releases of cm7 but I know of others who love them.
I like to run sense from time to time but I always go back to aosp for the customization possibilities it offers.
In the end, none of us can tell you what the best rom for you is. I can say that in general if you want a rom that you can flash and forget about it you will probably want to go with a rom that has been around for a while, preferably one that is in RC or Final status.
My advice is to try a few so you can see whether you like miui, aosp, or sence. Once you figure that out then just try a few of that type to find one that suits you.
Sent from my Incredible 2 using XDA App
Well I've never even used a smartphone before other than when occasionally using my brother's iPhone 4, so the interface won't be a big deal. I'll adapt and enjoy whatever I end up using. I just want to use something that's stable (in the sense that it's fully featured and nothing randomly messes up) and fast. Skyraider Zeus and the various CM7 kangs seem to accomplish this. I'll have to think harder on which one i want to use. The CM7 kang i'm looked at is by Condemned Soul. I can't really post in that forum yet, so I'm using this thread as a way to get this type of information.
The CM7 kang that he made is already able to OC I believe because of the CM kernel...so that's a plus because I'd really just want to flash the phone and enjoy using it. I like tinkering with stuff, but I don't want to constantly worry about flashing/unflashing and causing instability. I need this phone to last until the next upgrade. The thing is, "Sense" seems really interesting. People say it looks nice and has lots of features, but I've never really experienced these features anyway, so maybe I should go with CM7.
I always hear people talking about how stable MIUI is, but that has not been my experience with MIUI at all. I have tried MIUI three or four times on a few different android devices each time following the install instructions exactly. Wiped factory reset, dalvik, permissions battery stats etc. all the default ROM install stuff.
Each time MIUI boots up fine and works well for about 3 hours and then randomly reboots and glitches forcing me come back to the stable CM7 version.
I really want to like MIUI, but my experiences seem to be very different than most people.
Interestingly enough, when I googled the word "issues" on Cyanogenmod's stable forum, they mentioned stuff about Skype having problems with audio that was fixed in the non-stable nightly #134. This is why I am wondering if CM7 is truly stable or not. I'm not sure how to track errors/issues, so I don't know what the nightlies have improved upon, and I definitely don't know what the kangs improve on/fix.
If you like tinkering with stuff I'd say you could go the CM or MIUI (AOSP) route. But this phone is not going to be as good as other phones that are running aosp. It was made to run sense.
Fully featured is also going to set you back, do you mean fully featured as in being able to use it as a world phone? GSM Capabilities?
If so you're going to have to run stock or close to stock.
Me personally, I like sense. MikRunny 1.01 here. Fast, stable and everything works. Except for GSM though.
cstone1991 had it right though, you have to run them to see which one you like best. Everyone is going to have their own opinions on which ROM runs best and again each phone is going to run ROMS differently as well.
For ROM's you're going to basically go through different bases like this.
AOSP ROM's like CM7, MIUI
Sense 2.1 ROM's like Andybones stock or skyraider zeus
Sense 3.0 ROM's like Virtuous
Sense 3.5 ROM's like MikRunny
Each base has different features, different feel. You'll also have the ability to theme them differently as well.
Try the ones that interest you the most, run them for a few days each and see which one fits you the best.
jrizk07 said:
If you like tinkering with stuff I'd say you could go the CM or MIUI (AOSP) route. But this phone is not going to be as good as other phones that are running aosp. It was made to run sense.
Click to expand...
Click to collapse
I like tinkering with stuff, but only to a point. I don't like to constantly have to "re-do" things that don't have to do with the tinkering process (IE: Flashing over and over). What makes the phone able to run "Sense" instead of AOSP? I'm not aware of the whole Sense vs AOSP bit. If I could get some solid info on why I should run Sense instead of AOSP, I'll run Skyraider Zeus most likely, etc.
Fully featured is also going to set you back, do you mean fully featured as in being able to use it as a world phone? GSM Capabilities?
If so you're going to have to run stock or close to stock.
Click to expand...
Click to collapse
What I mean is that I don't need "extra" features or anything like that. I just want the phone to work the way it's supposed to....such as GPS and the camera(s) working. I don't want to have to sacrifice something I use often in order to gain speed. World capabilities aren't a big deal to me for sure. I don't know what "tethering" is so that whole bit isn't too important either.
Me personally, I like sense. MikRunny 1.01 here. Fast, stable and everything works. Except for GSM though.
cstone1991 had it right though, you have to run them to see which one you like best. Everyone is going to have their own opinions on which ROM runs best and again each phone is going to run ROMS differently as well.
For ROM's you're going to basically go through different bases like this.
AOSP ROM's like CM7, MIUI
Sense 2.1 ROM's like Andybones stock or skyraider zeus
Sense 3.0 ROM's like Virtuous
Sense 3.5 ROM's like MikRunny
Each base has different features, different feel. You'll also have the ability to theme them differently as well.
Try the ones that interest you the most, run them for a few days each and see which one fits you the best.
Click to expand...
Click to collapse
Thanks for this huge list. What's the difference between Sense 3.5 vs 3.0 vs 2.1? Yes, the obvious answer is that one is newer than the other. I heard Sense 3.5 has issues with the camera being upside down, etc. So I'd probably stick with the Sense that came with this phone (Sense 2.1 probably)
ma70ent said:
I like tinkering with stuff, but only to a point. I don't like to constantly have to "re-do" things that don't have to do with the tinkering process (IE: Flashing over and over). What makes the phone able to run "Sense" instead of AOSP? I'm not aware of the whole Sense vs AOSP bit. If I could get some solid info on why I should run Sense instead of AOSP, I'll run Skyraider Zeus most likely, etc.
The drivers are mostly what's different. Because HTC uses sense originally, Sense is going to be what works the best. It's not that it can't run AOSP but that sense is going to run without problems because that's what it was made to run.
What I mean is that I don't need "extra" features or anything like that. I just want the phone to work the way it's supposed to....such as GPS and the camera(s) working. I don't want to have to sacrifice something I use often in order to gain speed. World capabilities aren't a big deal to me for sure. I don't know what "tethering" is so that whole bit isn't too important either.
All the features work in most ROM's like that. Some ROM's (Mostly AOSP) have issues where the camera is stretched (front facing cam on miui). You're not really losing anything on other ROM's it's just that they work differently.
Thanks for this huge list. What's the difference between Sense 3.5 vs 3.0 vs 2.1? Yes, the obvious answer is that one is newer than the other. I heard Sense 3.5 has issues with the camera being upside down, etc. So I'd probably stick with the Sense that came with this phone (Sense 2.1 probably)
Sense 2.1 has the older stuff, it's probably going to be the fastest out of the rest of them because it has the least amount of stuff in it. This is what comes on the phone stock and what Skyraider runs.
Sense 3.0 incorporated new features like a new lock screen, new weather app, weather animations, sounds, display features, dial pad, messaging. It's running more stuff so in order to run correctly you would have to use a rom that's optimized.
Sense 3.5 is the newest and also has different features but it's very close to 3.0. Just about everything is the same that you can see but there are differences behind the scenes. Also there are no camera issues unless someone puts out a ROM that was quickly thrown together.
Click to expand...
Click to collapse
I say you skip 3.0 altogether and run either 2.1 or 3.5. Anything is better than stock with all the bloat so try skyraider or andybonesstock.
If you wanna try 3.5 go with MikRunny 1.01 and in the display turn off the 3d widget features. See how that runs on your phone, It's flawless on mine, I get no lag but again different phones run differently.
Alright I've decided to go with Skyraider Zeus thanks to reading all of this. Thanks for all of the help. I don't plan on flashing a new kernel onto Skyraider Zeus, so whether the stock SZ kernel can OC or not doesn't matter to me.
ma70ent said:
Alright I've decided to go with Skyraider Zeus thanks to reading all of this. Thanks for all of the help. I don't plan on flashing a new kernel onto Skyraider Zeus, so whether the stock SZ kernel can OC or not doesn't matter to me.
Click to expand...
Click to collapse
I don't think you will need to over clock. I haven't needed to on this phone. I have tested it and all it did for me was reduce battery life and improve benchmark scores. I haven't been able to tell a difference in actual usage whether I run at 1ghz or 1.8ghz so I opt for better battery life. The only rom that I benefitted from overclocking on was one of the really early ICS builds.
Sent from my Incredible 2 using XDA App
To all you who responded and to the OP - thanks!
This thread has been very helpful, I just got my Inc 2 last week and looking forward to trying out some new ROMS.
I've read that the stock kernel changed with the OTA updates (I'm on 2.3.4)
Does that limit which of the ROMs I can run?
Are there better ROM managers than others when it comes to this phone and the ROMs available for it?
Thanks.
Sent from my ADR6350 using xda premium
Rickinsav said:
To all you who responded and to the OP - thanks!
This thread has been very helpful, I just got my Inc 2 last week and looking forward to trying out some new ROMS.
I've read that the stock kernel changed with the OTA updates (I'm on 2.3.4)
Does that limit which of the ROMs I can run?
Are there better ROM managers than others when it comes to this phone and the ROMs available for it?
Thanks.
Sent from my ADR6350 using xda premium
Click to expand...
Click to collapse
The fact that you're on 2.3.4 means you need to use a downgrade tool and go down to 2.3.3. Then you'll use software called "Revolutionary" to get root, etc. If you search for "nat3mills" on youtube, and look under his videos for incredible 2 stuff, he has step by step tutorials on how to do all of this. That's what I'm going to do. Hopefully XDA doesn't penalize me for referencing this youtube user. Good luck!
EDIT: Also I'd like to ask everyone, since you feel there is no point in overclocking, is there a way to undervolt with any of these ROMs? Specifically SkyRaider Zeus/CM7 (asking because these seem to be the two common choices for people, and I figured this thread could now be used as a good reference) My logic behind undervolting is that if you can overclock it drastically on stock voltage (which is what I assume SRZ and CM7 are on) then you can probably keep it at stock clocks and undervolt it for better battery life/temperatures.
EDIT #2: Ok I was just looking in CondemnedSoul's CM7Kang thread. Apparently there is an app called Incredicontrol that let's you mess with voltages. Just to make sure, CM7 in itself only has the ability to control clock speeds (under/overclock) and not voltages, right? This means that Incredicontrol is necessary to mess with voltages?
from my understanding; if you OC and UV you gain nothing, if you UC and UV you conserve battery, if you OC and OV you make your device faster but perhaps introduce instability.
i've been reading tons of threads, clock speeds and volting included, and i have made the decision to not O/UC nor O/UV because my phone works great as it is and i do not care about benchmarks and my battery life is acceptable as it is.
if you really want to know more, set aside some time (hours) to search and read thread after thread on these topics and make your own educated decision based on the debates other members have participated in.
Number R09 said:
from my understanding; if you OC and UV you gain nothing, if you UC and UV you conserve battery, if you OC and OV you make your device faster but perhaps introduce instability.
i've been reading tons of threads, clock speeds and volting included, and i have made the decision to not O/UC nor O/UV because my phone works great as it is and i do not care about benchmarks and my battery life is acceptable as it is.
if you really want to know more, set aside some time (hours) to search and read thread after thread on these topics and make your own educated decision based on the debates other members have participated in.
Click to expand...
Click to collapse
Uhhh, you're looking at things the wrong way completely. Having less voltage whether something is overclocked or underclocked is ALWAYS better. If you increase the clock speed and have the voltage less than stock, it's a complete WIN WIN situation unless it introduces instability, but this is something you test for. Some people Overvolt to Overclock even further, but increasing voltage is not ALWAYS necessary. Keeping speeds at stock, but UNDERVOLTING helps battery life. Finally, overclocking but keeping stock voltage is the best combination for actual speed. Increasing voltage reduces battery life much more than simply increasing clockspeed.
This is how things work for desktops, and I'm sure it applies to everything else, including phones.
ma70ent said:
Uhhh, you're looking at things the wrong way completely. Having less voltage whether something is overclocked or underclocked is ALWAYS better. If you increase the clock speed and have the voltage less than stock, it's a complete WIN WIN situation unless it introduces instability, but this is something you test for. Some people Overvolt to Overclock even further, but increasing voltage is not ALWAYS necessary. Keeping speeds at stock, but UNDERVOLTING helps battery life. Finally, overclocking but keeping stock voltage is the best combination for actual speed. Increasing voltage reduces battery life much more than simply increasing clockspeed.
This is how things work for desktops, and I'm sure it applies to everything else, including phones.
Click to expand...
Click to collapse
Not necessarily...desktops and laptops and phones (hardware in particular) is built to run within certain voltage limits. Undervolting CAN help but not in all situations, and especially when running at max-min frequency can cause major instability in a speed-step cycle.
It is usually safe to undervolt a little bit with most hardware - but radios in general can be affected by voltage. Test all hardware with stress testing to ensure it is safe FOR YOUR PARTICULAR PHONE.
Background : MS in Computer Science (Heavy Unix Background)
To keep the thread on track - this phone was meant to run with Sense 2.1 - if you sync multiple email accounts or run many apps (buggy or not) you should probably stick with Sense 2.1. If you arent a demanding mobile phone user try anything else. I wish the AOSP builds were more compatible with HTC - and if AOSP isnt integrated into any HTC phones in the future I may switch to another manufacturer.

[Q] Custom kernel queries

Faux123 recently posted a thread releasing his custom kernel for the N1, but for a not-so mobile/linux savvy person like myself I don't have a great deal of knowledge on kernels, or what it adds/does.
What are the advantages or even disadvantages of using a custom kernel, like Faux? Does it save battery, or does it allow for overclocking? Like, what are the capabilities of using custom kernels over stock?
I'm currently on CM11 nightlies.
Any information is appreciated, and thanks in advance!
First I would read the changelog linked in the thread. Then after reading through, you should Google what each item means if you aren't familiar with it (A lot of them are noted as to what they do).
I would not suggest flashing a custom kernel if you aren't sure about how it can help your phone, and what risks you might be facing.
Always research before flashing something new, especially a kernel. :highfive:
Harfainx said:
First I would read the changelog linked in the thread. Then after reading through, you should Google what each item means if you aren't familiar with it (A lot of them are noted as to what they do).
I would not suggest flashing a custom kernel if you aren't sure about how it can help your phone, and what risks you might be facing.
Always research before flashing something new, especially a kernel. :highfive:
Click to expand...
Click to collapse
Yeah I wouldn't flash something unless I know what it did. On my previous phone (HTC Sensation) I had a few custom kernels flashed with the ROMs i used but other than that I have no experience with kernels.
I have read the changelog, and I can see what most of the items do, but specifically I have no idea. Reading through there are options to overclock/change voltage and increase or decrease battery life depending on profiles and governors used.
Overall I was wondering if it is worth flashing for a medium user. I'm not a developer, but i'm also not an avid mobile gamer. I mainly use internet, social apps and SMS, but don't like slowing of devices. Would the custom kernel be able to prolong battery life (or give other great advantages) while still maintaining the extremely fast response that N1 has already?
IAmOmicron said:
Overall I was wondering if it is worth flashing for a medium user. I'm not a developer, but i'm also not an avid mobile gamer. I mainly use internet, social apps and SMS, but don't like slowing of devices. Would the custom kernel be able to prolong battery life (or give other great advantages) while still maintaining the extremely fast response that N1 has already?
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You might get some battery life improvements by changing some voltages to decrease the power used. It shouldn't impact the performance if it's a mild change.

ROM with best battery life!

*If a good thread already exists about this, please link it.*
Hey Peeps!
I have probably tried all ROM's (Sense & Stock) on my aging M8, and the only ROM that comes with good battery life is ARHD. But, as we all know, it has its weaknesses.
Waiting for responses from you guys!
We do not compare ROM's that has the greatest etc. The best way to find it out is to try each ROM which fits you.
Sent from my HTC One_M8 using Tapatalk
There is no such thing as a ROM with "best battery life" that applies to everyone, in every situation. There are simply too many variable on how different folks use their phones (what apps, screen on time, etc.) your local reception, whether on LTE or 3g, WiFi, Bluetooth in use, etc. etc. etc.
Folks have very different experiences for each ROM. Seriously, I've seen some ROMs where I can get 2 days of light usage, where others on the same ROM will say battery life sucks and only lasts a few hours.
You need to use trial and error, and use what ROM works best for you. There are no shortcuts to that process.
XDA changed their rules some time ago to allow comparison threads as long as they dont turn into a flame war. Please keep this thread civil and respect everyone opinion.
Thanks
Wolf
redpoint73 said:
There is no such thing as a ROM with "best battery life" that applies to everyone, in every situation. There are simply too many variable on how different folks use their phones (what apps, screen on time, etc.) your local reception, whether on LTE or 3g, WiFi, Bluetooth in use, etc. etc. etc.
Folks have very different experiences for each ROM. Seriously, I've seen some ROMs where I can get 2 days of light usage, where others on the same ROM will say battery life sucks and only lasts a few hours.
You need to use trial and error, and use what ROM works best for you. There are no shortcuts to that process.
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what type of effect does it exist on kernel with battery life?
what are the good & bad things of custom kernel? and also can kernel affect on radio?
umesh.lk said:
what type of effect does it exist on kernel with battery life?
what are the good & bad things of custom kernel? and also can kernel affect on radio?
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I'm not that knowledgeable about kernels, and in particular don't mess much with custom kernels.
But what I would say, is that those questions aren't any more answerable then the previous points about custom ROM vs. battery life. Overclocking and undervolting allowed by custom kernels, as well as the choice of governors (which provide various balances of performance versus power usage) will all have some affect on battery life. But the experience is going to vary greatly from one user to another.
Similar to trying custom ROMs, just make a TWRP backup before flashing anything; try some custom kernels, or tweaking kernel settings; and see if the results are desirable to you.
The only real "bad" thing about custom kernels, is that some settings may result in instability, boot loops or no boot. But as long as you make a TWRP backup (before flashing kernels or changing kernel settings), you can easily recover from any such problems.
You also may or may not get the performance or battery life you are looking for, from custom kernels. Which is the main reason I've not been one to personally mess with custom kernels too much. With what kernel tweaking I did on other devices, I never saw a significant performance difference. And certainly not enough to warrant the hassles of system crashes and no boots I was getting.
But others will swear by custom kernels, different governors, etc. Again, your results can and will vary. So that is why its best to try for yourself; and not take another's advice as gospel.
Viper rom is quite good.

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