[Q]Kernel Improvements? - Nexus 7 Q&A, Help & Troubleshooting

Hi there,
Sorry if this is a silly question, but never really delved into kernels until last night.
I flashed the Lean Kernel on the Android Development thread, and wow I'm impressed.
OC'd it to 1.5ghz (dno if its sticking after reboot n dno how to check)
My question is this:
What sort of things does a better kernel improve?
Because im sure scrolling and browsing is much smoother, the app draw is alot smoother etc? Is this down to the Kernel? Or am I blagging myself because I've only just flashed one.
THANKS IN ADVANCED !!
Wilks3y

Kernel improves everything performance/battery wise.
Sent from my Nexus 7 using Tapatalk 2

leelaa said:
Kernel improves everything performance/battery wise.
Sent from my Nexus 7 using Tapatalk 2
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Thanks for the response mate, yeah that was the sort of understanding I had.
Does this include even things such as Browsing speed on the web etc?
Or is device specific such as app loading times and repsonsiveness/smoothness
Thankyou

Related

best rom for nexus 7?

just bought my nexus 7 would like to know what rom is best when it comes to battery life, quickness, and stability?? please help choose rom their are so many
mbrito41712 said:
just bought my nexus 7 would like to know what rom is best when it comes to battery life, quickness, and stability?? please help choose rom their are so many
Click to expand...
Click to collapse
The new team BAMF wrong is sooooo buttery! Running very smooth and stable for me
Ive been using Paul Obriens Jr# ROMs. theyre just tweaked stock ROMs, but I have never had a single issue so far and with every release there are new features without any new bugs. which is always nice.
randroid123 said:
The new team BAMF wrong is sooooo buttery! Running very smooth and stable for me
Click to expand...
Click to collapse
2nd'd
BAMF is my daily driver .. with Nova Launcher .. reeeeal smoove
Running skanky cm10 nightlies. Very stable, very happy
b0n3 said:
2nd'd
BAMF is my daily driver .. with Nova Launcher .. reeeeal smoove
Click to expand...
Click to collapse
How much smoother can it be than stock jb? Seems like people are getting placebo effects from custom roms, only benefit I see is removal of bloat, if there is any really.
Sent from my Nexus 7 using Tapatalk 2
It ships with stock so run stock for a few weeks to establish a baseline for stability and speed before you go experimenting.
I would wait a couple months. Stock nexus 7 runs great. Just unlock and root it. After a couple months Roms will start to mature and you will also see which ones seem to be leading, me personally, I love to flash. But I, very happy with stock and nova launcher. There are some things I would like from full tablet ui. But every ROM is promising the world. Just waiting to see which ones take the lead.
So just wait for now. no rush, do you hate stock that much?
Edit:
Plus people are having some issues booting into recovery without a USB or adb
Sent from my Nexus 7 using Tapatalk 2
Have tried just about all the popular ones out as of yet, favorite so far has to be TeamEOS' nightlies. Very stable, UI works great, launcher rotation, and has the ICS style status bar, which I prefer.
Sent from my Nexus 7 using xda app-developers app
I se quick boot - lets me soft boot into recovery - no messing around with USB cables
sadoway said:
Plus people are having some issues booting into recovery without a USB or adb
Sent from my Nexus 7 using Tapatalk 2
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Sent from my Stayfree maxiPad using Tapatalk HD
I've been using the Pure AOSP rom, I used the stock for a couple of days and then switched, never looked back. There aren't a lot of differences between stock and the Pure AOSP, but the AOSP rom provides a cleaner starting point and the camera works by default.
Sent from Nexus 7 using xda premium
I'm currently running stock, I just rooted and unlocked so I'm set whenever the stable full roms start kicking in. No need to rush it, just stick with stock for now
SoHaunted said:
How much smoother can it be than stock jb? Seems like people are getting placebo effects from custom roms, only benefit I see is removal of bloat, if there is any really.
Sent from my Nexus 7 using Tapatalk 2
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I think you are right about that. Although I flash Roms on my galaxy note, I could not see the need on the nexus 7 because it runs better than any ROM I ever put on the note
Sent from my Nexus 7 using xda premium
I keep trying new ones in hopes that it will somehow get even better, but keep returning to stock.
Nothing is as smooth.
Currently running stock, rooted, deodexed. With the tabletUI mod. Nova launcher. awesome.
I'm running BAMF Paradigm. It's absolutely an amazing blend of custom features that offer visual and performance related options to really make it your tablet, I'm very happy with it, I've run several others also. DEFINITELY recommend Motley's kernel, it's one of the things I love most about the nexus 7. Also Aaronpoweruser's (sp) cookies and cream rom ran really good for me.
Just go for a different kernel rather than ROM, I tried out Trinity today (only got the 7 yesterday) and I find its quite slick..
SoHaunted said:
lindenhurst said:
I think you are right about that. Although I flash Roms on my galaxy note, I could not see the need on the nexus 7 because it runs better than any ROM I ever put on the note
Sent from my Nexus 7 using xda premium
Click to expand...
Click to collapse
How much smoother can it be than stock jb? Seems like people are getting placebo effects from custom roms, only benefit I see is removal of bloat, if there is any really.
Sent from my Nexus 7 using Tapatalk 2
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Click to collapse
Hundred percent agree. I have Paranoid Android on there just for the Tablet UI changes. I have found that Kernel Improvements do help drastically.
plain old pure aosp. its clean and fast, with the trinity kernel at least
Jelly Bean Glazed V1.1.2
mbrito41712 said:
just bought my nexus 7 would like to know what rom is best when it comes to battery life, quickness, and stability?? please help choose rom their are so many
Click to expand...
Click to collapse
I have only tried Jelly Bean Glazed V1.1.2 with motley kernel and I love it! Rock solid stability, amazing speed and great customization.
oscarinexus7 said:
I have only tried Jelly Bean Glazed V1.1.2 with motley kernel and I love it! Rock solid stability, amazing speed and great customization.
Click to expand...
Click to collapse
I've also found that Glazed is the only ROM of the one's that I've tried so far that let's me use Amazon Instant Video from the Amazon web site.

Your favorite rom, kernel and settings

Hi guys! Lot's of threads are about "the best rom" or "best kernel and battery life" but there is no best rom or kernel. Everyone has his own taste Please share your favorite rom&kernel + your settings. and offcourse share your experience with performance and battery life
I'm currently trying out a few roms and will get back when I see some good replies here!
I'm on stock 4.1.2 image with stockish custom kernel from _thalamus and it's great compared to 4.1.1. Chrome runs at same speed as stock Browser now and memory management got alot better.
Sent from my Nexus S using Tapatalk 2
madd0g said:
I'm on stock 4.1.2 image with stockish custom kernel from _thalamus and it's great compared to 4.1.1. Chrome runs at same speed as stock Browser now and memory management got alot better.
Sent from my Nexus S using Tapatalk 2
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Click to collapse
One problem with stock ROMs: features limited, otherwise, they are great in terms of stability.
For me, i'm balancing between codenameandroid and MIUI(miui.us versions).
aladin6 said:
One problem with stock ROMs: features limited, otherwise, they are great in terms of stability.
For me, i'm balancing between codenameandroid and MIUI(miui.us versions).
Click to expand...
Click to collapse
Was using CNA before for 2 months, but always thought that stock is more smoother. Don't mind that much for features and got fed up with constant updating.
Sent from my Nexus S using Tapatalk 2
I used stock non rooted for some time and I liked the smoothness. The thing I missed was BLN and some other options. Also the battery life with moderate use is less good then some custom roms. Now flashing strawberry rom =)
I'm rocking CM10 w/ Marmite right now since they merged in 4.1.2 asap.. As soon as AOKP Build #5 is released I'm jumping back on the Unicorn saddle w/ Marmite though.. Love me some unicorns!
Rasbeanjelly + Trinity t11
Smooth, stable & 2 days of battery duration
On the road with my NexusS...
klinkerkp said:
Rasbeanjelly + Trinity t11
Smooth, stable & 2 days of battery duration
On the road with my NexusS...
Click to expand...
Click to collapse
How do you get the 2 days? =)
lowtje said:
Hi guys! Lot's of threads are about "the best rom" or "best kernel and battery life" but there is no best rom or kernel. Everyone has his own taste Please share your favorite rom&kernel + your settings. and offcourse share your experience with performance and battery life
I'm currently trying out a few roms and will get back when I see some good replies here!
Click to expand...
Click to collapse
Not to mention there is dozens of this same thread you started. Infact I found 3 in this 1 section.
lowtje said:
How do you get the 2 days? =)
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Click to collapse
With rascarlos roms (Rascream before & Rasbean now) i always have 2 days. With very hard use...when i do corrections to my theme and flashing 10-20 times a day...have all day of battery.
On the road with my NexusS...
I'm going to try that as i too have rasbean jelly 10/10 build on my ns4g w/ marmite kernel 4.8.7. This combo plays very nice as well. I've had no reboots and the battery life gets me to about 24 - 32 hours of life. Going to see if i can actually beat that with Trinity kernel.
TNS11-JB-ALPHA12 is this the t11 kernel you use?
What are good kernel settings for marmite to get good battery life?
Sent from my Nexus S using xda app-developers app
lowtje said:
What are good kernel settings for marmite to get good battery life?
Sent from my Nexus S using xda app-developers app
Click to expand...
Click to collapse
Well for the 4.8.7 version, the scheduler is CFQ and i use On Demand 200min/ 1000max. I use NS Tools to put the On Demand Sampling rate at 120000 to save battery. This works for me.
rjones9902 said:
Well for the 4.8.7 version, the scheduler is CFQ and i use On Demand 200min/ 1000max. I use NS Tools to put the On Demand Sampling rate at 120000 to save battery. This works for me.
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Ok, will give that a go!
Sent from my Nexus S using xda app-developers app
I'm running cm10 m2 with marmite. So far so good. I'm on smartass max 1200. Very smooth
Sent from my Nexus S 4G using xda app-developers app
klinkerkp said:
Rasbeanjelly + Trinity t11
Smooth, stable & 2 days of battery duration
On the road with my NexusS...
Click to expand...
Click to collapse
How can you use rasbean jelly on the nexus s 3g? I thought it only was for the nexus s 4G version?
Oh one more thing, what does that mean if i change the on demand sampling rate from 40000 to 120000?
jabbeboy said:
How can you use rasbean jelly on the nexus s 3g? I thought it only was for the nexus s 4G version?
Oh one more thing, what does that mean if i change the on demand sampling rate from 40000 to 120000?
Click to expand...
Click to collapse
Actualy rasbean is 3g, but ported to 4g by Rustyjay
On the road with my NexusS...
I'm on The Strawberry rom now. Running very very smooth and I like the battery life aleeady after one day of use. This rom is based on the rasbean source!
CM9.1.0 with default kernel and settings.
It may 'only' be ICS, but it runs better than any JB rom/kernel combo that I've tried on my phone to date.
Sent from my Nexus S using xda app-developers app

Battery Life/Temp When Running ICS

Recently rooted my phone and have used a number of different ROMs. The ICS ROMs for this phone seem to heat up my battery and drain it quite quickly. GB ROMs don't seem to do that. Is that the nature of ICS for the Glacier?
I'm just wondering what other users' experiences with ICS are.
Thanks.
Its a known issue with ROMs that have the 3.0 kernel. I know that the devs are looking into a solution AFAIK no eta yet.
wonderbread24 said:
Its a known issue with ROMs that have the 3.0 kernel. I know that the devs are looking into a solution AFAIK no eta yet.
Click to expand...
Click to collapse
He said ICS, we don't have any ICS roms with 3.0 kernel (because we would have to re engineer the rom.)
To answer the OP's question, i haven't been on gingerbread for a long time, i don't have a problem with ICS, check your clock speed, your governor and your battery. What rom are you on? And are you sure its not JB?
I was using Glacier_One_V_1.3. Sorry, I'm a noob at the whole kernel/governor thing so any assistance would be greatly appreciated.
For now, I ended up switching to Skytouch (the i06 port to myTouch) as my ROM.
Sent from my Glacier using xda app-developers app
THEindian said:
He said ICS, we don't have any ICS roms with 3.0 kernel (because we would have to re engineer the rom.)
To answer the OP's question, i haven't been on gingerbread for a long time, i don't have a problem with ICS, check your clock speed, your governor and your battery. What rom are you on? And are you sure its not JB?
Click to expand...
Click to collapse
So, after doing some research, I downloaded System Tuner and changed the Governor to Smartass V2 with a High Threshold of 1.02Ghz and a low of 245Ghz. I'm going to see if that improves my battery life.
Bass_Man25 said:
So, after doing some research, I downloaded System Tuner and changed the Governor to Smartass V2 with a High Threshold of 1.02Ghz and a low of 245Ghz. I'm going to see if that improves my battery life.
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Click to collapse
Make a screen off profile, i don't know if the app you got can do that. I have SETcpu...
Smart ass doesn't need screen off profiles right
Sent from my MyTouch 4G using xda app-developers app
rockstarar said:
Smart ass doesn't need screen off profiles right
Sent from my MyTouch 4G using xda app-developers app
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That's my understanding and experience, yes
Sent from my myTouch 4g using xda app-developers app
Bass_Man25 said:
Recently rooted my phone and have used a number of different ROMs. The ICS ROMs for this phone seem to heat up my battery and drain it quite quickly. GB ROMs don't seem to do that. Is that the nature of ICS for the Glacier?
I'm just wondering what other users' experiences with ICS are.
Thanks.
Click to expand...
Click to collapse
I'm very happy with battery life when I use Synthetic.Nightmare's SyNthetic_aospX 1.0.0-MR1SG. Is it as good as CyanogenMod 7.1? Hard to say, but possibly not. Haven't noticed anything in terms of heating, though. Newb, so not sure about kernels (except as they relate to linear transformations) but I think I have to be using aosp(x) kernel with that ROM...
My two cents
I am using Glacier_One_V_1.3, very happy with it. waiting for a new kernel about to be released.. and I am sure it'll solve a few issues maybe flickering screen/flipping lock screen and maybe the heating problems. Who knows
Battery life is good for me. yet thinking of getting an alternative battery. Maybe it'll get less hotter.

How will a custom kernel benefit me

What will a custom kernel do for me. I have been thinking about rooting but I do not want to flash a ROM. I am really loving stock. How will a kernel benefit me. I heard they have something to do with battery. How is that?
Sent from my Nexus 4 using xda app-developers app
With a custom kernel you can do some really cool tinkering for example
- underclock (save battery)
-undervolt ( MAY save battery , but will def help with heat)
- change governor ( may help battery)
- change screen properties . I.e colours
- GPU over clock / under clock ( obvious)
Other cool performance tweaks as well
Sent from my Nexus 4 using Tapatalk 2
italia0101 said:
With a custom kernel you can do some really cool tinkering for example
- underclock (save battery)
-undervolt ( MAY save battery , but will def help with heat)
- change governor ( may help battery)
- change screen properties . I.e colours
- GPU over clock / under clock ( obvious)
Other cool performance tweaks as well
Sent from my Nexus 4 using Tapatalk 2
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Click to collapse
Thank you. Sounds pretty helpful for battery. Do you recommend any kernels?
Ballastatuz said:
Thank you. Sounds pretty helpful for battery. Do you recommend any kernels?
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I'd go with franco's kernel for now.
All of them are new and may have bugs, but franco is a longtime kernel developer and he's the least likely to do stupid stuff or claim features that actually hurt performance or are just placebos.
Franco's kernels seem good. I use it on my N7, but I just wouldn't use it yet as he's working blind. Faux has some amazing battery saving kernels. Mathkid's kernels pretty well as well, I used to use his on the Nexus S back in the day.
Sent from my Nexus 4 using xda app-developers app
Ranguvar said:
I'd go with franco's kernel for now.
All of them are new and may have bugs, but franco is a longtime kernel developer and he's the least likely to do stupid stuff or claim features that actually hurt performance or are just placebos.
Click to expand...
Click to collapse
I'd be careful about recommending a kernel where the developer is doing so blindly. Honestly its very irresponsible. Unless he's got a device that's 99.9% identical, i cant recommended it.
Sent from my Nexus 4 using xda app-developers app
italia0101 said:
With a custom kernel you can do some really cool tinkering for example
- underclock (save battery)
-undervolt ( MAY save battery , but will def help with heat)
- change governor ( may help battery)
- change screen properties . I.e colours
- GPU over clock / under clock ( obvious)
Other cool performance tweaks as well
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
Under clock can be done on a stock kernel just needs root. Custom kernel allows over clock doubt its needed though CPU is fast enough.
Different governors can be used on stock too but custom kernels may offer extra ones like smartass etc.
They may also add things like NTFS cifs run etc not available in stock.
Using Motleys kernel just now too soon to comment on improvements.
Sent from my Nexus 4 using Tapatalk 2
If stock is working for you, there's no reason to flash another, unless you have the itch.
The stock kernel is great, and undervolting is more trouble than it's worth if you're starting from scratch, unless tinkering with voltages is your thing, and there's zero need to overclock the N4 CPU or GPU IMO. There aren't a ton of options, yet, either. 3.4 is pretty young yet.
eep2378 said:
I'd be careful about recommending a kernel where the developer is doing so blindly. Honestly its very irresponsible. Unless he's got a device that's 99.9% identical, i cant recommended it.
Sent from my Nexus 4 using xda app-developers app
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As someone who is using Franco's kernel at the moment, I can recommend it strongly. It's running very well :good:
Ngo93 said:
As someone who is using Franco's kernel at the moment, I can recommend it strongly. It's running very well :good:
Click to expand...
Click to collapse
Agree. Franco is amazing and once he actually has the device he will only improve.
Yeah -- that was my other experience, I'm using franco's kernel and have been since day one.
Quite stable at least so far, no crazy changes.

[Q] Which is the best kernel?

What is the best kernel overall?
The best kernel for battery improvement?
Best kernel for performance?
and the best kernel for gaming?
.....and GO!
Stock.
Sent from my Nexus 7 using xda premium
Based on my experience. For overall excellent gaming performance with good enough battery performance, I suggest M-Kernel a25 or a27. And to over clock your device after installing the kernel, use Trickster Mod from play store.
Sent from my Nexus 7 using xda app-developers app
I'd like to recommend u to see the following thread.
[GUIDE] *NEW* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tests)
http://forum.xda-developers.com/showthread.php?p=31620793
theres no best kernel, they are all good. theres only whats best for your and your devices needs. evrybody is going to say that the best kernel is the one that they use, no one is going to say that they use the worst.
simms22 said:
theres no best kernel, they are all good. theres only whats best for your and your devices needs. evrybody is going to say that the best kernel is the one that they use, no one is going to say that they use the worst.
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Click to collapse
Well I base it on most popular. If its popular it means its good and works most of the time. Maybe I should've used better wording?
Sent from my Nexus 7 using Tapatalk HD
jesus359 said:
Well I base it on most popular. If its popular it means its good and works most of the time. Maybe I should've used better wording?
Sent from my Nexus 7 using Tapatalk HD
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Click to collapse
popular doesnt mean good. try out a few, find what your device likes. every device is different and reacts differently with each kernel.
k1silver said:
I'd like to recommend u to see the following thread.
[GUIDE] *NEW* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tests)
http://forum.xda-developers.com/showthread.php?p=31620793
Click to expand...
Click to collapse
Yes you can read there, OP just updated the score. If you want to try, try trinity for best performance, m kernel for best overall. I'm using Mkernel now, really good kernel. No problem so far.
Sent from my Nexus 7 using xda premium
I get about 10-11ish hours "screen on" with light use on franco kernel #38
Motley kernel
i tried
Motley kernel,
Franco kernel
Trinity Kernel
Trinity is the fastest if you tweak it good..
but on the downside the most glitch..
but Morfic just released two updates in two days...
so theyre fixing it.
So im back with Trinity Kernel.
Its good..
and the only Kernel i find that you can change GPU speed, ofcourse Using
the glitchy Trinity Toolbox
I love Franco.Kernel R31. Battery life is great and performance is good as well. R38 is the newest and great, but I feel performance is a bit lacking on 38.
Sent from my Nexus 7 using Tapatalk HD
Jomari29 said:
i tried
Motley kernel,
Franco kernel
Trinity Kernel
Trinity is the fastest if you tweak it good..
but on the downside the most glitch..
but Morfic just released two updates in two days...
so theyre fixing it.
So im back with Trinity Kernel.
Its good..
and the only Kernel i find that you can change GPU speed, ofcourse Using
the glitchy Trinity Toolbox
Click to expand...
Click to collapse
Did he fix unplug usb otg reboot issue yet?
Sent from my LT18i using xda premium
Closed, try them and see

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