yashsingh1/xdaforums huggingface dataset:
[Galaxy Grand Duos i9082 Android Development] raghavsharmaxda:
though as i realised after test of few minutes (40 or so) , that over clocking isnt making much impact(infact not at all)

but i selected 1.6GHz with performance option and set i/o schedular to ROW!!!!

i realised that in this combination , after antutu benchmark, 3D graphics values were zero.......(screenshots attached)

and so my benchmark was in 8000s ......u can see them below!!

i dont know mch if i m doing smthing wrong (or row are supposed to stop 3D graphics from function :P ) , but this is result!!

hope u notice and give a reply!

Hope I Helped :):)
[Galaxy Grand Duos i9082 Android Development] xenon92:
I selected the same settings - OC -1.6 Ghz and I/O Scheduler - ROW

My 3D graphics value is 2844 and not zero.

Though I am running the next version of the kernel, nebula v1.3.

I read somewhere on XDA, GPU fails if OC is set too high, in games and in 3D benchmark tests. That's why I don't use OC. Clocking higher generates heat and wastes battery for very little performance gain. Try lowering the frequency and running benchmarks again.
[Galaxy Grand Duos i9082 Android Development] xenon92:
nebula v1.3 uploaded. 20140103.

You'll have to use some or the other kernel tweaking app (Performance Control app included) for all the future builds to enable/disable tweaks and features to get the most out of the kernel.

- added UKSM support (enable it in the Performance Control app)

- added Dynamic Sync Control (enable it in the Performance Control app)

- added Frandom

- added BLX - Battery Life Extender

- added Performance control app in the kernel zip (credits to h0rn3t and educk for the amazing app)

Brief info about the features included in the kernel can be found in the 3rd post. For more info, Google!

Kernel is getting better everyday! :)
[Galaxy Grand Duos i9082 Android Development] Alldroidrider:
I had this strange issue while using this kernel...

When I was using the music player (Google play)...the phone reboots randomly and 1times its freezes...

I dint took the log for reboot..but had the catlog app running while freezing...

Not sure if the log will capture those details but anyway attaching the log....

Battery life ifs much improved using this kernel...:good:
[Galaxy Grand Duos i9082 Android Development] RIPPER:
Grrttt work [MENTION=4653589]XeNon.[/MENTION] Fan of u now:thumbup::thumbup::thumbup::thumbup::thumbup:

Using ur kernel for 2 hrs no lagness whatsoever. Battery has improved significantly. Thnxx again. My antutu score has touched 11000 n dats grrt :D:D
[Galaxy Grand Duos i9082 Android Development] alpine111573:
installed this kernel on latest pawitp cm11, and its working great! thanks xenon92!
[Galaxy Grand Duos i9082 Android Development] mukeshpacheria:
your kernel have some bug

when open application it restart the system sometime
[Galaxy Grand Duos i9082 Android Development] androidbaba:
hi xenon

i am also getting random reboots while opening some apps like facebook,xda etc

sorry but cant take logcat
[Galaxy Grand Duos i9082 Android Development] alpine111573:
[KERNEL][LINARO][AOSP] nebula kernel [v1.3] [Update 20140103]

after install I've experienced fc then I did wipe cache and dalvik, everything works out fine....

now it FC while playing pvz2....

revert back to stock kernel.....

re-install xenon92 kernel, wipe cache and dalvik, now its working fine...... wew.......
[Galaxy Grand Duos i9082 Android Development] xenon92:
Saying "some bug" doesn't help. Until you provide some log, there is no way that I or anyone else can tell you what went wrong. I can't guess the error. I cannot fix what I cannot see. If there is a kernel panic, that is - kernel tried to do something that it couldn't - there would be a last_kmsg in /proc/last_kmsg. It is a log of of the previous boot until the soft reboot. You haven't even told what configuration you are using, OC/governor/io-sched/other tweaks etc etc.

Try these:

1) Wipe cache and then wipe dalvik cache

2) Fix permissions - use Performance Control app

3) Try switching to default governor and see if that fixes the issues. That way we can know if the governor is at fault.

Kernel is running smooth for me and I am happy with it. :)
[Galaxy Grand Duos i9082 Android Development] RIPPER:
Working smooth for me as well. Guys if ur using someone's work pls help them don't complain:cool:
[Galaxy Grand Duos i9082 Android Development] androidbaba:
Sorry my bad I am on cm11 no over clock no mods..i it happened again but I took logcat this time hope it helps as I have read somewhere that after reboot log cat is useless

Also there is no entry @ /process/last_kmsg
[Galaxy Grand Duos i9082 Android Development] xenon92:
Yes, after reboot logcat is useless.

Still in your logcat, I see this:

/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor: open failed: EACCES (Permission denied)

Try this:

1) Flash nebula v1.3 again

2) Wipe cache and wipe dalvik cache

3) "Fix permissions" in the Performance control app (from your app drawer)

I have added this 3rd step in the OP too, in installation instructions. Hopefully it will help you too.

I'll soon add an FAQ in OP about the kernel.
[Galaxy Grand Duos i9082 Android Development] k2wl:
Great work buddy. ....I am on vacation. .... so can't test. .. But I'll .. surely......
[Galaxy Grand Duos i9082 Android Development] Alldroidrider:
log

Hi xenon,

I have flashed the new version and my phone reboots randomly while playing music through google play music app....

My settings is lulzactive/sio/1200mhz max

Fixed permission in the performance control app and still gets the reboot...

Im in carbon rom latest build...:):)
[Galaxy Grand Duos i9082 Android Development] androidbaba:
+1

I did all the steps you recommended but reboot while incoming calls,using some apps

---------- Post added at 09:58 PM ---------- Previous post was at 09:57 PM ----------

---------- Post added at 09:59 PM ---------- Previous post was at 09:58 PM ----------
[Galaxy Grand Duos i9082 Android Development] kawaiiDango:
[MENTION=232693]xenon[/MENTION] quite smooth. Could u start working on porting BLN for our phones? and try implementing USB OTG drivers. It was supported on official 4.1 roms.
[Galaxy Grand Duos i9082 Android Development] k2wl:
otg drivers are there in kernel.but our firmware doesnt hv native support for it.its not kernel; its a firmware at fault.

bln needs to be worked at code level.its not fully understand yet...atleast by me...:victory::D
[Galaxy Grand Duos i9082 Android Development] xenon92:
The BLN functionality can be achieved by an app called Light Flow. Search the i9082 forum and you'll find instructions there.
[Galaxy Grand Duos i9082 Android Development] mukeshpacheria:
xenon

is accidentally reboot fix in Latest 1.4
[Galaxy Grand Duos i9082 Android Development] xenon92:
New build uploaded. v1.4 - 20140106

- added new I/O scheduler - ZEN

- lowered swappiness

- added dynamic read-ahead instead of a constant read-ahead value (it can still be fixed to a higher value using Performance Control app)

- reduced WiFi wake-locks (better battery)

- few more performance improvement tweaks

- few bug fixes

I have made the kernel as I wanted it to be. Now I'll look at the changes that I have made and try to figure out if I missed something during those changes or did something that shouldn't have been done that might be causing issues. In the past 2 days I did find a few things that I missed and I have fixed them. Hopefully I'll find more things to fix. I also need to clean up a few things from the kernel that I added on a testing basis. I have got 1-2 random reboots too in the past 2 days in my testing. I'll try to find the causes. But I can live with that as well, as I have gained much more with this kernel. I feel battery backup to be improved as well.
[Galaxy Grand Duos i9082 Android Development] alpine111573:
downloading new version.....;)

powered by cm11 by pawitp and nebula kernel by xenon92
[Galaxy Grand Duos i9082 Android Development] mukeshpacheria:
latest updated is stable as compare to 1.3,,,,,

xenon. i want to know some thing

i want to set my cpu at 1 ghz but in this kernel and other kernel it goes to direct 800 Mhz or 1.2 Ghz

what i do to set on 1 Ghz
[Galaxy Grand Duos i9082 Android Development] xenon92:
That frequency step is not available in the kernel. I'll add it in the next update.
[Galaxy Grand Duos i9082 Android Development] mukeshpacheria:
Thank Your xenon

Your work in awesome:good:
[Galaxy Grand Duos i9082 Android Development] m.arun_kumar:
Hi

Thanks for your gr8 work, (Carbon ROM)

1.3 version hot boot 5-6 times with in 3hrs.

lets see 1.4..

thanks
[Galaxy Grand Duos i9082 Android Development] raghavsharmaxda:
Yeah.. There were many random reboots :(... Please someone confirm it

developers are like gods :P
[Galaxy Grand Duos i9082 Android Development] m.arun_kumar:
Hi,

Kernel version 1.4 had more reboots than 1.3.
[Galaxy Grand Duos i9082 Android Development] xenon92:
Too bad then... I can't help anyone without any logs... Start taking a kmsg log if you know how to make it reboot, ie if you can reproduce the soft reboot.

I think this kernel is just made for my phone as I am happy with it! :D

Anyways, I'll clean up some things in the kernel in a few days when I get some time as college is starting from this week and will keep just the important features. Hopefully then it would be stable for you guys. Let's see. But i'll use v1.4.

11400+ with nebula v1.4
[Galaxy Grand Duos i9082 Android Development] RIPPER:
Noo noo...its working fine here also. :D no reboots here till now. May be heavy apps r doin. Everybody clean cache:thumbup::thumbup:
[Galaxy Grand Duos i9082 Android Development] mukeshpacheria:
xenon can you please Upload default kernel of cm 11 latest build of pawitp
[Galaxy Grand Duos i9082 Android Development] RIPPER:
Dude no need of it..just flash cm11 again:thumbup::thumbup::thumbup:
[Galaxy Grand Duos i9082 Android Development] mukeshpacheria:
i know this bro but i want kernel only

only request ,,,, if possible please provide me
[Galaxy Grand Duos i9082 Android Development] raghavsharmaxda:
You should ask pawitp specifically for providing just kernel alone..:)

developers are like gods :P
[Galaxy Grand Duos i9082 Android Development] naufalhadyan:
You should've made a nandroid backup if you knew you can't reflash the ROM. ;)
[Galaxy Grand Duos i9082 Android Development] Dwama:
hi,can u made kernel one for stock version 4.2.2?
[Galaxy Grand Duos i9082 Android Development] m.arun_kumar:
Hi Xenon,

thank you again for your work,

but with this kernel phone not stable,

It makes continues hotboot, if i clear dalvik and cache partition then it works for 10 mins.

Antutu scored good points to me also,

phone restarts if i touch performance control app.

Ive re flashed flashed your carbon rom to get default kernal.
[Galaxy Grand Duos i9082 Android Development] RIPPER:
An advise for you put logcat with it. If you want any help:good:
[Galaxy Grand Duos i9082 Android Development] m.arun_kumar:
Hi ripper,

sry

It wont let me take, thats why im sharing the problem thru text.

phone reboots with in mins.

if any one of you facing the same issue, kindly help with logcat.

thanks
[Galaxy Grand Duos i9082 Android Development] black87:
use kmsg log as the reboot is random, logcat is difficult as we must take it before the reboot
[Galaxy Grand Duos i9082 Android Development] xenon92:
New build uploaded. v1.5. 20140110

- removed BLX

- reverted dynamic read-ahead to a constant 2048/32 value

- removed experimental code from the kernel (cleanup)

This is update is for [MENTION=4831291]RIPPER[/MENTION] and me as we both are happy with it. :)

To all others facing problems, read FAQ in the 3rd post. Try using the ondemand governor and cfq i/o sched.

androidfilehost.com is undergoing maintenance. Download counters are all messed up. Please verify the size and md5 of file after download.
[Galaxy Grand Duos i9082 Android Development] RIPPER:
Yeahh Man battery is running like invertor (Just joking) and smooth & buttery interface after nebula. Will report to u after this installation [MENTION=5273865]xenon92[/MENTION]. Thnxxx mate.:laugh:
[Galaxy Grand Duos i9082 Android Development] vinodr5371@xdaroms.co.in:
This is not working on probam rom?
[Galaxy Grand Duos i9082 Android Development] RIPPER:
Hey [MENTION=5273865]xenon92[/MENTION] using Nebula v1.5 for straight 2 Hrs No FC's, no reboots ( there were one or two in previous build but its normal if u customizing). Very happy with the performance :good::good::good:

Keep it up:angel:

---------- Post added at 10:13 PM ---------- Previous post was at 10:12 PM ----------

It should work:cool:
[Galaxy Grand Duos i9082 Android Development] sharath412:
Noticeable performance change, Awesome battery life .. Had some random reboots while playing Deer Hunter 2014, playing videos. .. No issues
[Galaxy Grand Duos i9082 Android Development] vinodr5371@xdaroms.co.in:
Flash this file on probam it's stuck on upgrading Android!
[Galaxy Grand Duos i9082 Android Development] black87:
Its normal proccess if you flash something
[Galaxy Grand Duos i9082 Android Development] donnie.darko:
USB mass storage. Please
[Galaxy Grand Duos i9082 Android Development] k2wl:
it cant be done.

not in our framework. but is in kernel.
[Galaxy Grand Duos i9082 Android Development] Darian71:
Nice Kernel [MENTION=5273865]xenon92[/MENTION] :D
[Galaxy Grand Duos i9082 Android Development] RIPPER:
WOWOW:good::good::good: mine is 11500
[Galaxy Grand Duos i9082 Android Development] Darian71:
Second attempt 20 minutes later after opening a few apps, using Facebook,& texting, I got a 11892. Not sure how battery life is gonna be but stable so far. :thumbup:
[Galaxy Grand Duos i9082 Android Development] BoMbO711:
Continuous random reboot

My phone keeps rebooting randomly after flashing this kernel v1.5 on SlimKAT.

I wiped cache partition and dalvik cache and did "fix permissions" using performance control app.

Any advise?
[Galaxy Grand Duos i9082 Android Development] Darian71:
Mine done that twice at 600/1500 mhz settings with very aggressive memory and KSM enabled. So I went back and unchecked KSM/Clicked on Medium for memory and no issue since running latest Carbon Rom. And actually it only happened while using Facebook. Seems to be the most demanding app I have for any Rom. My SD card read ahead is at 2048

EDIT: Right after replying to you I had a reboot. So dropped my setting from 1500 to 1400. Apparently xenon92 does indeed have these voltages working. I had never really been able to tell on k2wl's kernel.
[Galaxy Grand Duos i9082 Android Development] Darian71:
Well, not sure what the cause or conflicts, but for the first 6 hours straight , testing numerous combinations on this kernel resulting in my highest benchmark yet. After letting it idle for 5-6 hours of sleep running the latest Carbon Rom, I began getting random reboots. Slowly kept adjusting things back towards the original settings to no avail. Reboots became more frequent over the past 6 hours of testing. Back on k2wl 's kernel now. This nebula kernel is definitely superior performance wise, just a bit unstable yet brother. If you decide to change some things and need a tester, don't hesitate to ask. I'm staying with Carbon Rom for life! ?
[Galaxy Grand Duos i9082 Android Development] black87:
Yes, if you flash anything you get that process:D
[Galaxy Grand Duos i9082 Android Development] Darian71:
A little feedback,.. Just because I'm addicted to testing and performance, :sly:, but decided to flash this kernel again, disabled the performance manager you sent with it and just tested using the performance settings built in the Rom.

Conclusion : You've really hyped this baby up xenon92! If I run my benchmark using 312/1400/SIO, I score consistently at or slightly above 12000! However, should I receive a text, notification, etc while testing, phone will freeze. No reboot. Just freeze. Forcing a manual reboot. Using the max of 1300, I am 90% stable with consistent (Antutu) scores in the 11500+range. The reason for my 90% stability claim is after about an hour, while using Tapatalk, XDA, I got a reboot. So I've dropped to max setting of 1200/312/SIO, And still scoring high 11000's test after test. Now for the part you won't like,.. I had been experimenting wit ART and compatible Gapps, and did all this testing running ART without realizing it. So no Dalvik results for you........ YET. :D:D

EDIT: Using Interactive governor. Which could be an issue, because I've noticed every setting stays the same on reboots EXCEPT my governor. It ALWAYS reverts back to Ondemand. Gonna leave it on Demand for awhile and retest
[Galaxy Grand Duos i9082 Android Development] donnie.darko:
Seriously, I didn't understand.
[Galaxy Grand Duos i9082 Android Development] Darian71:
No [MENTION=5273865]xenon92[/MENTION], well, upon installing the latest update of our Carbon Rom compiled with the Linaro tool chain, this kernel has suddenly become stable thus far with my favorite combo of governor and scheduler. 3D testing scores no longer hitting 16,17 or 18's, but consistent 12-15fps. Think I'll stick with nebula for awhile now and test some more!

:thumbup::D:thumbup:

EDIT: 2 Hours straight and NOT ONE reboot or hiccup. :thumbup:
[Galaxy Grand Duos i9082 Android Development] RIPPER:
Thats good news. I am on Omni as well as on CM11 this kernel suits me on both. with one reboots in a day.

Now I will try it on Carbon:D:D As both is complied by [MENTION=5273865]xenon92[/MENTION] it will certainly be rocking:laugh:
[Galaxy Grand Duos i9082 Android Development] naufalhadyan:
I was using version 1.5 and got massive reboots on CM11 even with the configurations mentioned in OP...

With the latest Carbon it seems more stable.. I'm on it for a few hours now and still no reboots. I'm on 312/1200 with smartassV2 and SIO
[Galaxy Grand Duos i9082 Android Development] Darian71:
Similar settings here. 312/1300/Interactive /SIO. Approaching 12 hour mark and not one reboot. Also using latest Linaro Carbon update. :thumbup::thumbup:
[Galaxy Grand Duos i9082 Android Development] naufalhadyan:
I got a forced reboot and app FC on 2 games just half an hour ago... I will try to run the games again with logcat in the background. I know this is kernel problem because after switching to k2wl's kernel, the FC and reboot is gone.

edit: even with these reboots and FC it is still stable on Carbon than CM11... On CM virtually every app I open generate a forced reboot in 1-2 minutes.
[Galaxy Grand Duos i9082 Android Development] RIPPER:
Have u played videos on it. I mean through browser ot from memory card.
[Galaxy Grand Duos i9082 Android Development] Darian71:
Update : After my last post of nearly 12 hours of no reboots, FC's or any other problems, I suddenly got a phone freeze. Powered off and about a minute after booting, my phone rebooted. Over the course of the next 15 minutes, I got 3 more random reboots. Decided to flash k2wl's kernel, wiped cache/dalvik and phone stuck on Carbon logo screen. Tried rebooting but same thing. Flashed entire Carbon latest update formatting system without Gapps, and still stuck on logo screen even after cache/dalvik wipe upon flash. Ended up wiping entire system, restoring the 07 Carbon backup and booted normally. Then flashed latest Linaro 1/13 update, then flashed latest Banks standard Gapps 1/10 release and phones been stable all day with much use. Approximately 10 hours now. Not sure what went wrong. :what:
[Galaxy Grand Duos i9082 Android Development] Darian71:
Switched to the updated Performance apk listed in iceyhotguy's thread on tweaks and flashed this kernel once again with the recommended settings in that thread, with the exception of the "dirty" ratios. I left them as is. Still scoring above 12000 in Antutu, however I just got another random reboot. As long as I got options, I'm testing! :thumbup::cool::thumbup:
[Galaxy Grand Duos i9082 Android Development] Darian71:
For the life of me I can't figure this baby out. Lol. On a fresh install, tweaks or no tweaks, it makes my phone very smooth, very responsive, and loads Web pages, social apps or whatever lightening fast! At first I thought it was only freezing /rebooting my device while using the Web, but now I'm more inclined to believe that I actually am on the Web more than off. Either way, it will perform without lag or issue for up to a few hours if constant use, but once the first random reboot occurs, you can pretty much bet the reboots will start becoming more frequent, at first every 30 minutes, then every 10,and suddenly every few minutes no matter what I try. Almost like a virus that once it's activated, begins growing rapidly ending in bootloop if you let it continue without entering recovery and flashing stock or k2wl's over it. I do believe however, that knowing this, I can probably flash it again and run catlog when it starts acting up. Would that be something you'd be interested in seeing [MENTION=5273865]xenon92[/MENTION]?
[Galaxy Grand Duos i9082 Android Development] xenon92:
Well, try to take and post logcat as well as kmsg here, just before the reboot. It may or may not show the reason. Anyways, I haven't looked into the kernel in the past week as college has started. I use v1.5 on a daily basis and on an average I do get one reboot once a day but not the 'virus' way that you described. lol. I can live with that. It suits me. Kernels aren't something that attract my attention and interest as much as ROMs do.
[Galaxy Grand Duos i9082 Android Development] Darian71:
Completely understand. My college starts back next week and have an outpatient procedure done today but I'll try to get it logged and check back in. Have a GREAT semester brother! (my last one was rough!) lol:thumbup:
[Galaxy Grand Duos i9082 Android Development] Darian71:
Would you believe (after coffee), got my phone out, uploaded some pics and got 3 reboots within 5 minutes! So in the Performance Control apk, it has the option to run dmesg dump and locat and store to emulated /0/ where I can upload to Google drive . But since starting both I've not had one reboot in an hour now, lol. And I know it's working because I checked a 5 minutes log of each and even exploded them. But doesn't do much good when I can't replicate the reboot.. Will keep trying and let you know.

---------- Post added at 06:33 AM ---------- Previous post was at 06:06 AM ----------

Well, no dmesg logs were recorded. But got a logcat. Not sure how accurate as the time shows differently than when the reboot occurred. Here's my Google Drive link. https://docs.google.com/file/d/0BzqRyOUmJsSebzdFaDVNY1Z4dzg/edit?usp=docslist_api
[Galaxy Grand Duos i9082 Android Development] Darian71:
Can't seem to find a dmesg log that'll upload. But I did read 2 lines in the log that said "shutdown" suppose I could screenshot those if you want. Here's the last log in managed to save. Hopefully it caught it for you if not just let me know how or what I need to do brother

https://docs.google.com/file/d/0BzqRyOUmJsSebzdFaDVNY1Z4dzg/edit?usp=docslist_api:thumbup:
[Galaxy Grand Duos i9082 Android Development] raghavsharmaxda:
Hey [MENTION=5273865]xenon92[/MENTION] :D..just a polite request am here to make..

I m not asking u to develop it now.or anytime..do whenever You Wish and if You Want :)..no force.. Bt bro..many say otg is not possible on our device...some say kernel limitations...some says hardware limitations too...so m not asking for that obvious ..

But Dual boot is something AFAIK not a hardware limitation right(correct me bro if I m wrong! I m a noob in comparison to u after all :P )...is dual boot even possible for the device.. :!

Even galaxy s has dual boot ..and so does the s2 and even few weaker devices then ours..

Am just politely asking if its in consideration list (as obvious from our other posts u are busy in making RR ROMs for other devices with linaro compilations, and it is obvious too that personnel life is something more imp then all this)..hoping for a reply..(asked under kernel section..sorry for that )..
[Galaxy Grand Duos i9082 Android Development] Resonance28295:
You should ask this in general section as you tell others.