yashsingh1/xdaforums huggingface dataset:
[Nexus 7 Android Development] o0boiboi0o:
weird.

I tried fastboot again. Ok, running smoothly at first, but in the end, i got this error:

writing 'bootloader'...

FAILED <status read failed <too many links>>

So i closed the cmd (bcoz when i tried fastboot devices, it shows ????? devices. Then when i forced closed my device and reboot into bootloader, it showed 4.18 as the bootloader version but under SIGNING, it is not defined yet.

Is this correct?
[Nexus 7 Android Development] Nico_60:
is it written BOOTLOADER VERSION - 4.18 in bootloader?
[Nexus 7 Android Development] Metallice:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Yes. But i can do some test build for you when i have the time. Start at at a 35.5 build... If no issues than a 35.75... If issues then a 35.625 build... And so on until i find what patch is causing you issues.

Sent from my Galaxy Nexus
[Nexus 7 Android Development] br0adband:
After using a36 for a few days on 4.2.1 and now a37 on 4.2.2 I can say I haven't had a single issue with Wi-Fi at home (11n router) or on the go at several hotspots. I also use my N7 to do a lot of wardriving with Wigle and it's still never had problems or issues in the past few days, so...

Seems Metallice just made an offer to assist, hope it gets resolved in some respect.
[Nexus 7 Android Development] :
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

That's a very generous offer. Thanks. I will be happy to do the testing.

---------- Post added at 10:34 PM ---------- Previous post was at 10:27 PM ----------

From what I can see, problems start when multiple access points are present. Something seems to affect the roaming between APs. If you have a single router at home, my guess is you will not have an issue.

Metallice is amazing, incidentally. His offer is exceedingly nice. :beer:
[Nexus 7 Android Development] br0adband:
I have a single AP here in my apartment, sure, but there are 27 APs around me in my apartment building and the building next door, and 11 of those share my particular channel and are connectable (given the signal strength). Nowadays routers have automatic channel hopping (at least my Cox provided Netgear does) so it doesn't matter what channel I'm on, there are enough APs around me that there's some level of interference even so.

But again, hope your situation gets resolved, you're the only person I've seen that has reported such errors (at least in my short period of time with this Nexus 7 and partcipating in this subforum for it, been around here a while across many different devices).
[Nexus 7 Android Development] sjknight413:
Metallice, do you ever touch anything to do with the speaker at all? Sound seems to get noticeably lower in volume when I flash your kernel.
[Nexus 7 Android Development] xfrancis14:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Use an audio mod if your unhappy then, don't criticize Metallices work cause he doesn't do anything with the speaker, I suggest kingbeatz.
[Nexus 7 Android Development] dems86:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

How did you interpret that as criticism? Sounded like he had a legitimate question about an occurrence he is having flashing as kernel. Slow your roll.
[Nexus 7 Android Development] xfrancis14:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Sorry Idkk just sounded like it to me
[Nexus 7 Android Development] thereal_bigjake:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Didn't sound like he was trying to criticize his work to me. I thought it was a legitimate question...

Maybe I am wrong but your reply seemed kind of harsh for asking a simple question.

And by the way, M-kernel Rocks!! :D

Nexus 7 | PA 3.0 4.2.2 | M-kernel | Nova
[Nexus 7 Android Development] sjknight413:
Please get off your high horse, i love metallice's kernel! It's just something i have come to notice recently.
[Nexus 7 Android Development] xfrancis14:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Okay sorry dude, but yea use kingbeatz best audio mod you'll find
[Nexus 7 Android Development] Metallice:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Ummm yeah I did... Check the change log. I disabled dynamic range compression. End result? Better dynamic range and sound quality, but overall slightly lower volume.

There are tons of ways to boost the volume so I think DRC is worth removing.

(Plus I've had 3 nexus 7s have their speaker blown. 2 RMAs and one I just kept and then dropped and replaced with the one I have now. If i can increase audio quality and prevent my new speaker from blowing out again I'm going to do it.)

Sent from my Galaxy Nexus
[Nexus 7 Android Development] Leonhan:
Just flashed a37 yesterday, and after 24 hrs, only 20% drain from full battery with mild browsing and temple run 2. Very nice on battery.:D
[Nexus 7 Android Development] sjknight413:
Saw that and thought that could be what was doing it, but i was under the impression disabling drc would increase the volume if anything. Glad to know it isn't just my nexus being funny! Thanks for the explanation
[Nexus 7 Android Development] Metallice:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Well DRC can be used to lower volume, but the most common use is to boost volume. Most modern music of all genres uses heavy dynamic range compression to boost volume.

Louder music sells better than higher quality music.

Sent from my Galaxy Nexus
[Nexus 7 Android Development] xfrancis14:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Quick question but my nexus 7 used to change normally but now it takes forever like it takes 3h to charge like 30 40 percent do you think it's kernel related?
[Nexus 7 Android Development] thereal_bigjake:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Are you using the stock charger and cord?

The reason I ask is that I tried using the cord from my kindle cause it was longer and it would only charge about 10% per hour.

Nexus 7 | PA 3.0 4.2.2 | M-kernel | Nova
[Nexus 7 Android Development] xfrancis14:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Mines about 10 percent per 45m with stock cable and charger
[Nexus 7 Android Development] ezas:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Sigh. Using compression to boost volume in playback is like the old saying; Make everything louder than everything else.

But M is right. It is (over)used to 'punch' up the sound in today's way over processed (popular) music. The only time I use it (when it is available) is when listening to music at low volumes, like going to sleep volume, to hold down big jumps in volume, and to not lose the quiet sounds completely

Using compression in recording or as an audio effect is a different matter.

I'm glad you took it out. It should only be a selectable feature. Less signal processing is good signal processing.
[Nexus 7 Android Development] XxStechxX:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Battery life seems decent 4 me on a37 uv mpu 75 2 cores running the last pub build. Just came from a clean slate so idk ten hrs down to 57%, 87% screen time. Mostly web browsing

Sent from my Nexus 7 using Xparent BlueTapatalk 2
[Nexus 7 Android Development] Metallice:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Well i would say its more like making everything just as loud as everything else.

Also i wouldn't say it is used to "punch" up music, as it actually does exactly the opposite. It eliminates the punch from music by making everything closer in volume.

Sent from my Galaxy Nexus
[Nexus 7 Android Development] evilgenx:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Really happy with the PA 4.2.2 NIGHTLY and m37. I'm amazed at how smooth yet power friendly this is. I completely rebuild my n7 for the 4.2.2 stuff starting with a install of latest stock. Really awesome job metal, no problems to report!
[Nexus 7 Android Development] xfrancis14:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Metallice.. That charging problem I'm facing must me kernel related.. I just flashed franco kernel and now charging speed is 2m a percent with mkernel it was 5m I'll keep testing

*Edit* nvm they're about the same
[Nexus 7 Android Development] piupiu piu:
Is it important to update your bootloader? I 'm running android 4.2.2 and a 37 kernel works just fine. My current bootloader 4.13.also can i find zip bootloader? And how can i update my?
[Nexus 7 Android Development] NicoGa:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

You can find it in 4.2.2 factory image at this link (is inside the archive):

https://developers.google.com/android/nexus/images

Then use fastboot to flash it

Envoyé depuis mon Nexus 7
[Nexus 7 Android Development] piupiu piu:
So I use bootloader only if i want to return to stock rom?
[Nexus 7 Android Development] thereal_bigjake:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

He meant pull the bootloader from the factory image archive file. And then flash with fastboot.

You don't have to update your bootloader, but you may have problems down the road if you do not.

Nexus 7 | PA 3.0 4.2.2 | M-kernel | Nova
[Nexus 7 Android Development] piupiu piu:
Thank you! Will i loose my data?
[Nexus 7 Android Development] dems86:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

No
[Nexus 7 Android Development] thereal_bigjake:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Flashing the bootloader, no you will not lose any data.

Flash the whole factory image and you will. :D

Nexus 7 | PA 3.0 4.2.2 | M-kernel | Nova
[Nexus 7 Android Development] ezas:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

I used 'louder than everything else' because that is a long running joke among sound engineers.

Agreed that your last sentence is a better description of compression in general.

I'm not talking about volume when I say punched up, though I could be. But in this case I'm talking about a more forward sound if that makes more sense

I'm familiar with compression in recording, live sound, and as an effect with guitar. It's use is multi-faceted to say the least and we are trying to describe it in a sentence or two.
[Nexus 7 Android Development] nex86:
hm is it normal that the maximum amount of active cores are 2 by default on this kernel but stock kernel has 4 by default?

This gives me really bad benchmark results, worse than at stock kernel, and I always have to set max 4 cores manually.

I'm running a37 btw.
[Nexus 7 Android Development] jacoghi:
Am I the only one who has been having problems with the wifi to the point of having to turn the wifi off and back on again to recover the connection?
[Nexus 7 Android Development] thereal_bigjake:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Without doing a benchmark test can you even tell your running on just two cores?

Nexus 7 | PA 3.0 4.2.2 | M-kernel | Nova
[Nexus 7 Android Development] Nico_60:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

It's normal, did you read the OP before posting here?
[Nexus 7 Android Development] nex86:
Oh I see. but it he didn't tell the reason.

does 4 cores cause instability on other gouvernors beside performance?

What's the default settings that the stock kernel actually use so I can use it on this kernel?
[Nexus 7 Android Development] sjknight413:
It just increases battery life with a minimal impact on performance.
[Nexus 7 Android Development] nex86:
I notice framerate drops on some games, so I assume they use more than 2 cores.
[Nexus 7 Android Development] Cliniclyinsane:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Wifi is fine here

Paranoid 3+ nexus 7 w/m-kernel a37 ;)
[Nexus 7 Android Development] :
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

No, you are not. Look back a few pages. I wrote post about it. However in the meantime I identified other issues apart from the one discussed in that post.

Metallice said he would provide test builds to identify the source of the problems.

In the meantime you can go back to a35. WiFi is perfect and it works fine with 4.2.2 (at least with the latest PA nightly).
[Nexus 7 Android Development] jacoghi:
And how did you find out that the tablet is switching between the different APs? That's interesting because it's exactly the same configuration that I have here, two different APs, with the connection behaving really erratically. Thanks for letting me know that other people are having the same issues.
[Nexus 7 Android Development] Metallice:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Yeah i doubt it. If i never said anything you'd never notice. There is not one game out their that needs more than two cores. Shadowgun, Dead Trigger, NFS:MW, all only use two cores. These games are limited by GPU fill rate. Not the CPU.

Sent from my Galaxy Nexus
[Nexus 7 Android Development] Metallice:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Okay so there are two people with this problem now. Ill get builds out for you two some time this week. a35.5 ish

Sent from my Galaxy Nexus
[Nexus 7 Android Development] Metallice:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Of course he cant. But benchmarks are all that matter right? Who doesnt just spend all day running benchmarks? That's how I use my device.

Sent from my Galaxy Nexus
[Nexus 7 Android Development] davisac:
lol when I first rooted my device I did exactly that. I had to have the best score.

Then I grew up.
[Nexus 7 Android Development] jacoghi:
Thanks for your worries, man, but don't worry about this, it's a minor thing if it's only affecting the two of us. Push the development even further and try to achieve all your goals, that's what matters, and we are here to help you with whatever you need. That's why publishing your work is most of the times (most of them...) a mutually beneficial relationship with the testers, as a lot of people are gonna be able to provide you with the necessary feedback so you can improve your work (which, in the end, should be something that you are the one that's gonna take most advantages out of it) . Anyway, thanks for your efforts, I really appreciate everything that you've been doing for this device.
[Nexus 7 Android Development] :
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

First I noticed that the connection strength changed suddenly and wildly while the device was on my desk, a few feet from an AP, then I saw on the APs' status page that my device was switching among them all the time. I guess you could also use WiFi Analyzer from Google Play. It shows the MAC of the AP being used.

Other times, however, the device does exactly the opposite and does not roam even if it's already out of range from the AP it's trying to use and I'm standing a few feet from another one.

In short, the roaming behavior is completely unpredictable.
[Nexus 7 Android Development] uberbania:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

6.5 hours screen time playing sudoku, reading pdf's for class, flipping between that and swiping notes, all while playing Pandora and checking Facebook and browsing Google currents. 33% and still rolling!! Will post screens of battery use after I finish this paper.

a37 touchdemand 204/1200 two cores and PA 3.0 nightly
[Nexus 7 Android Development] uberbania:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

This was without turning off device. Next day or two, will test battery longevity while turning off device between uses.

a37 touchdemand 204/1200 with PA3.0 nightly
[Nexus 7 Android Development] Gr€€n:
Why would you turn off your device between uses ?

If everything's alright, the tab won't spend *much* battery while idle, but booting the device is the best way to loose 2 or 3% each time.
[Nexus 7 Android Development] sgt. meow:
@Metallice

How do you compile the boot.img for the kernel? Can I have the exact command please?

Thanks in advance.
[Nexus 7 Android Development] Jolest:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Are you aware that charging rates vary at different battery levels? Example: when battery level is at 5%, it will charge at a much faster rate than when it is at 90%. This doesn't have anything to do with software, it's just battery physics.

My point is, that saying "kernel X charges at Y minutes per percent" is only a good comparison if you're comparing the charging rates at the exact same battery level. If your battery level was lower when you were testing Franco, then it will naturally charge faster...
[Nexus 7 Android Development] icephreaq:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

I believe it is stated in the OP that the kernel defaults to 2 cores for battery efficiency. It is up to the user to tweak it to their desired performance/battery needs. Download Trickster Mod from the market to tweak settings to your liking.
[Nexus 7 Android Development] Metallice:
I'm sorry you will need to better explain. I have not idea where in the process of creating a kernel you're referencing... all the way from the beginning, compiling the source, after creating a zimage, etc.
[Nexus 7 Android Development] Metallice:
Okay here is the test build for the (at the very least) two people with wifi issues. I'm going to have to do this in a process of elimination type test, as I haven't added any specific WiFi patches so it's harder to say what the problem is. I could scour through the patches and logically determine what could be the problem... but this is just easier.

The problem apparantly originated for you two somewhere between a35 and a36 so these will be builds between them. Therefore, they are old, outdated, and generally NOT RECOMMENDED FOR ANYONE OTHER THAN THE 2+ HAVING WIFI ISSUES.

Posting for the tests work as follows -

Test (#) - M-Kernel_a35.(#)_(Number of a35 to a36 commits included)of(Total commits from a35 to a36) - (Download Link)

So here you it is. Let me know how it goes for you two.

Test 1 - M-Kernel_a35.1_46of71 - http://www.mediafire.com/download.php?8ueyp8rv2cm28v3
[Nexus 7 Android Development] jacoghi:
Looks like you got it right on the first try, at least for me. So far, working flawlessly, improved a ton. Thanks for this.
[Nexus 7 Android Development] Metallice:
Argh I knew that was going to happen. "Okay it works! Bye. That must mean you fixed it and know the cause. KTHXBYE!"

No it doesn't.

Having it work really doesn't mean anything yet. That build had about a 36% chance of fixing it based on number of patches reverted. Please read the post to understand what's going on. More test builds incoming.
[Nexus 7 Android Development] narco14:
for me all work very fine with my codefire on my nexus 7,no bug's or fc. Thx for your great work.
[Nexus 7 Android Development] :
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

:)

I download it now. I'll give you feedback tomorrow. My apologies for the delay but we clearly are in different time zones (CET here).

I'll report back...

---------- Post added at 08:08 PM ---------- Previous post was at 07:56 PM ----------

First impression is good. Roaming seems to be working as expected. No instability, at the moment. Tomorrow morning (CET) I can try it in my work environment. All those APs drove a37 crazy within a few minutes of getting to my office. :(
[Nexus 7 Android Development] Metallice:
Well here's the second test anyway... since we haven't hit the problem yet according to the other user, we'll keep moving forward... up to 60 now.

Test 2 - M-Kernel_a35.2_60of71 - http://www.mediafire.com/download.php?y9vd76xxlrxpt8d
[Nexus 7 Android Development] :
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Flashed. Give me a few minutes and I'll report back.

Update: I saw the signal fluctuate randomly a few times. I'm not 100% sure about this build. I'll keep an eye on it. However no network disconnects, yet.

If you want to upload other builds, I will download and try them at the office. There I am sure I can quickly get clear results, if past experience is anything to go by.
[Nexus 7 Android Development] oomek:
This sucks!

[ PROBLEM SOLVED. I was to lazy to check properly that all the 4 cores are running ]

Well, after reading all the hype about this kernel I've decided to give it a try and here is what i've recieved.

STOCK KERNEL

M-KERNEL

I've set every option as advised in the first post.

Is this how this rom boosts the battery? By lowering the performance?

Not funy..i'm going back to stock, I've just waisted my time.
[Nexus 7 Android Development] NicoGa:
You just need to activate the 4 cores with a free app called trickster mod. Both performance and battery will increase compare to stock.

Anyway without benchmark it would have been hard for you to see any differences.

Also, do not forget that you get several new cool features when using M-Kernel compare to stock ...
[Nexus 7 Android Development] denzel09:
R: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

LOL

Your nexus has big big problems.. I with m-ker have 16000 points with OC with antutu and 12500 with no OC and stock ker ;)
[Nexus 7 Android Development] :
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Clearly you are too clever to waste your time and read a few pages of posts to understand what you are doing or even to care about spelling. It must be wonderful to have a superior intellect. I envy you. I really do.

Seriously, man, you should do some research before gratuitously insulting people. Nobody will miss you here.
[Nexus 7 Android Development] Gr€€n:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Did you actually try the kernel? Or you've just done a benchmark and that's all?

I didn't notice any performance difference between the current version of the kernel and the previous, even though we turned off two cores.
[Nexus 7 Android Development] oomek:
Trickster was installed, as I mentioned everything set as described in the first post. Still the same result.
[Nexus 7 Android Development] Metallice:
Obviously you have trouble with reading comprehension as his post said you need to set the maximum number of cores to 4 using trickstermod, not just "install" trickstermod.

If you had actually read the OP, or any of the posts following yours, you would know that I have the maximum number of cores set to 2 for testing.

You could also just use the performance governor for benchmarking.

Or even better, try actually running the kernel to asses, rather than making yourself look like a fool by making sweeping judgements based on worthless benchmarks.
[Nexus 7 Android Development] NicoGa:
What do you mean by "everything set as described in the first post" ?

Just leave everything as default and activate the 4 cores. This should be enough to please your benchmark results (where we can see that it is only the cpu tests that are lower ... because 2 core may be missing ...)
[Nexus 7 Android Development] invd:
Then your device has a terrible taste when it comes to kernels. I get totally different results. Besides: I don't use benchmarks on a regualr base...my daily driver kernel has to run my games smooth and give me some features like USB OTG-Support...
[Nexus 7 Android Development] Cliniclyinsane:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

I always laugh the hardest at people who haven't a clue to what there doing so they blame it on someone else. Seriously bro?

Paranoid 3+ nexus 7 w/m-kernel a37 ;)
[Nexus 7 Android Development] ezas:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

I'm personally sorry for the inconvenience that this has caused you. I'm sure that the 10 minutes that flashing and testing this kernel took cut into your humanitarian charity work.
[Nexus 7 Android Development] davisac:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Did you actually notice the "performance" difference besides the semi-pointless benchmark score?

Sent from my Nexus 7
[Nexus 7 Android Development] oomek:
Shame on me

You guys are right, everyone of you, I set the cores to 4 but didn't bother to reboot the device.

Now the Benchmark shows 14473.

I deserved a public humiliation.
[Nexus 7 Android Development] waz675:
Re: [KERNEL][3G+WIFI][4.2.2] M-Kernel - a37

Yeah as I said when it first happened I was gaming for about 7 hrs and didn't notice any difference, also didn't see about the 2 cores thing until first recharge. It would be very hard for most people to actually notice much if any difference. Placebo obviously will be it for most.

---------- Post added at 08:07 AM ---------- Previous post was at 08:05 AM ----------

Good to see you bothered to reply. A few peeps would scamper off with their tail between their legs once they realised they were wrong. Good work! :thumbup: