yashsingh1/xdaforums huggingface dataset:
[Galaxy Tab S Original Android Development] NerdFurgison:
Yep having great results on 1.7 as well I am very impressed with the battery life I have been getting on the last few iterations of this kernel. ?
[Galaxy Tab S Original Android Development] Provinomico:
Great to hear it's improving from previous versions, I will flash v1.7 tonight, I think I'm running 1.3 or 1.4.

One question, it's mentioned in the thread, factoring also performance, that the OnDemand governor is best for battery life. How does it fare against Interactive, regarding UI responsiveness? will try to test both on v1.7
[Galaxy Tab S Original Android Development] UpInTheAir:
I personally can feel Interactive to still be snappier, but placebo effect can be quite powerful.

Only way is to try yourself and make up your own mind ;)
[Galaxy Tab S Original Android Development] NerdFurgison:
I'm using ondemand and I agree I think interactive is just a hair snappier, although the extra battery I get from ondemand more than makes it worth switching to ondemand. I think the difference in snappiness is only noticeable if you really have an eye for it. Like upintheair said a lot of it could be placebo, but on demands battery saving definitely is not placebo
[Galaxy Tab S Original Android Development] gggg:
Can you and UIA please give us an idea (percentage) how much longer your battery lasts compared to stock kernel .
[Galaxy Tab S Original Android Development] UpInTheAir:
No idea. It is too subjective and as I've said in Post #3 "BETTER BATTERY LIFE", is mostly down to user habit.

Fairly difficult to comprehensive test and quantify this as each test would have to be exactly the same..........CPU and GPU stress testing won't prove anything either.

Users can tweak the kernel parameters and drivers to suit themselves and or their device capability. :)
[Galaxy Tab S Original Android Development] gggg:
Yes I have read your post, but is the save in standby and during work ??

E.g. when in flightmode and I dont touch it, the loose is about 2% during 12h. What about you guys ?
[Galaxy Tab S Original Android Development] UpInTheAir:
I don't leave it alone that long.............

As I said again, down to user habit. This includes the ROM and apps you use as well as any background processes waking device etc. Not everyone's device and configuration are exactly the same.

As I have also said,

, done by keeping a lot of settings at stock level. I'm not turning this into a battery saving kernel, user can tweak from default and compare themselves

Ondemand is only recommended to try, so please try for yourself, your experience will most undoubtedly be different to another..
[Galaxy Tab S Original Android Development] NerdFurgison:
If I had to put a number on it I would say just by switching to ondemand I save maybe 15% more than interactive. I'm sorry I can't give you a more accurate response but I don't bother with battery or benchmarking apps I even turn the percent off my battery because I tend to obsess over battery life when it's on lol. My guess is just a comparison based on what I've noticed during my personal usage, nothing scientific at all but my battery savings over interactive are noticeable and over pure stock it's definitely a very big difference. Like uia said ymmv depending on usage habits
[Galaxy Tab S Original Android Development] gggg:
[MENTION=1872640]UITA[/MENTION]: Is there an issue with kernel T705XXU1ANH1 or is it just a lack of time to update ?
[Galaxy Tab S Original Android Development] UpInTheAir:
The kernel zImage is built using the latest official NG2 source as a base.

I haven't bothered repacking into a "newer" NH1 ramdisk. If I diff it, maybe there is not any difference at all. If there are issues, I'm sure I would have heard about it by now.

Myself, still not bothered to upgrade my ROM. :)
[Galaxy Tab S Original Android Development] gggg:
tmd3782, autobrightness issue

Issue report: http://xdaforums.com/showpost.php?p=54662268&postcount=16

just beeing too curious I looked into the sources (me doing programming is long long time ago ;) )

https://github.com/UpInTheAir/SM-T700-T705-Kernel/tree/SkyHigh/drivers/sensors

of course I found the driver for my sensor tmd3782.c but where to look for the autobrightness Controller. Any idea ? THX
[Galaxy Tab S Original Android Development] UpInTheAir:
I don't know and would need to do a little digging/searching of the source. Compiling the kernel shows up exactly what drivers are built from the defconfig

As i said in the other thread, I personally don't see an issue with auto-brightness.

BTW, that's not the source i use, link is in Post #1 and 2
[Galaxy Tab S Original Android Development] gggg:
I saw that u used SM-T700-kernel-T700OPU1ANG2 as source ... how to you care for the differences to SM-T705 or is it just params that are diff ?
[Galaxy Tab S Original Android Development] UpInTheAir:
Yes, quoted in OP. I'm using same source base for all 8.4 and 10.5" kernels. I'm not going to support all kernels if i can't use the same base. Essentially no difference, drivers are all there to build.
[Galaxy Tab S Original Android Development] NerdFurgison:
Just out of curiosity, and I'm certainly not begging for features, but how hard would it be to add double tap to wake function? Does it need to be compiled in the kernel? Or could I just add like a script or something in init.d? I used the feature on all my other devices, I believe it cuts down on wear and tear to your physical buttons
[Galaxy Tab S Original Android Development] UpInTheAir:
New code would need to be written for drivers to be patched. Whilst I'm certainly capable to adapt allot of things, this makes the difference between a real dev and just a hack. ... something I'm not capable of.
[Galaxy Tab S Original Android Development] NerdFurgison:
Gotcha. That would be out of my realm of know how as well then. Thank you sir
[Galaxy Tab S Original Android Development] UpInTheAir:
Haven't done much with the kernel the last week, but had a play this morning trying to get MTP & PTP modes integrated and working correctly into Synapse.

Just annoyed me having to use the ROM when switching from UMS back to MTP. !

So MTP is working nicely now (quite happy with that), but PTP is still not quite right. Will leave PTP for another time ;)

So I might release a minor update for the MTP this week, but there's not really much that needs "fixing" :)
[Galaxy Tab S Original Android Development] LoVeRice:
Hi upintheair, is it true that you were leaving, and stop supporting these kernels :/
[Galaxy Tab S Original Android Development] UpInTheAir:
Who told you that rubbish ! I've only stopped the CM kernel. Users can't be bothered with feedback, so I can't be bothered wasting anymore time. I just don't have time and motivation for it. I might change my mind in future, but that's where I stand at the moment.

I'm having a play with the TW kernel as I reply now. ;)

Did you see my previous post? There's more coming for the "tweakers" too :)
[Galaxy Tab S Original Android Development] UpInTheAir:
v1.8 released

R3_v1.8 kernel is now released for supported 8.4" models :)

Change-log is in Post #2.

T700

WIFI

R3_v1.8 is untested. Please let me know how it goes........

Ensure you flash the kernel for your device model !!

NOTE: commit credits are in source.

If you have Synapse issue after UPGRADING, please force stop app and delete Synapse data/cache first ;)

Further instructions in Synapse app & Posts #1-3

For better battery life, try ONDEMAND GOVERNOR and recommendations in Post #3

Enjoy :good:

Cheers,

UITA

.
[Galaxy Tab S Original Android Development] slackerz_86:
No UCI supported for v1.8? already clear cache. Still the same. T705
[Galaxy Tab S Original Android Development] UpInTheAir:
Not a kernel issue. Works fine. Just flashed v1.8 again for the 100th time and no Synapse issue.

You can try simple things before posting? uninstall Synapse, wipe cache and dalvik cache in recovery, re-install Synapse from Google Play
[Galaxy Tab S Original Android Development] NerdFurgison:
Wow 1.8 is incredibly smooth for me. No issues to report with it. Another very good kernel ?
[Galaxy Tab S Original Android Development] slackerz_86:
And that simple things i have done countless of times.. but still the same result.
[Galaxy Tab S Original Android Development] UpInTheAir:
BUG

The backup & restore function does not actually save the boot.img in the sdcard/SkyHigh folder.

I must have overwritten a wrong file at some time because it used to work. Have found the problem and will test a fix tomorrow.
[Galaxy Tab S Original Android Development] lysaer:
Does this kernel allow enabling of fast charge via MHL adapters ?
[Galaxy Tab S Original Android Development] UpInTheAir:
You can't be bothered to OP ?
[Galaxy Tab S Original Android Development] lysaer:
Huh?
[Galaxy Tab S Original Android Development] ezas:
He means that the answer was in the Original Post about the kernel, something he took a LOT of time to write. Hopefully you did read the OP and honestly just missed it. Because to not read/search before asking a question is against forum rules. Devs spend a lot of time supporting their work, something they don't have to do. An impossible task if they have to keep answering the same questions over and over.

If you did read/search it helps if you say so. Something like 'i searched but I couldn't find the answer, maybe I just missed it'.

Also a personal note from me. I know it's the texting age and all that. But communicating with just terse sentences to people you don't is somewhere close to rude. Would it have been that hard to write something like 'I'm not sure what you meant by that?'
[Galaxy Tab S Original Android Development] lysaer:
I read through the original post and I couldn't see anything in the battery section that mentioned fast charge, it might be known by a different name, but I've only heard it referred to as fast charge.

Also the post I responded to as "huh" made no sense to me, which I see no more or less rude than the sentence I responded to.
[Galaxy Tab S Original Android Development] UpInTheAir:
By reading/searching Posts #1-3 would answer your question.
[Galaxy Tab S Original Android Development] ezas:
Fair enough. Wasn't try to bash you and I allowed that maybe you did look.

We could have avoided this if you had written exactly that, making my point about short sentences. You could have written something like: I read the OP about charging but I wanted to make sure it applied to MHL as well.

Same goes for Huh. A simple: I don't understand what you wrote would have been better.

No harm no foul as far as I'm concerned. Moving on.

Cheers
[Galaxy Tab S Original Android Development] ZeroPDA:
Have you fix the bug with overwriting boot.img with the wrong file for backup and restore?
[Galaxy Tab S Original Android Development] UpInTheAir:
There is no such bug as you describe

The bug is that it doesn't work because Synapse is directed to a non-existing file, so it just doesn't work at all. I somehow copied a wrong file, that's all. In other words it is not harmful because it does nothing. Too many files on PC !

If you'd read the Change-log, there would be no need to ask. .... you don't see any v1.9 ? ;)
[Galaxy Tab S Original Android Development] fedecape:
I have a Tab S 8.4 .. How's it working? Do you guys recommend it?
[Galaxy Tab S Original Android Development] UpInTheAir:
What do you expect to hear posting a generic question in a development thread?

In default state, it's rock solid. Only user can screw things up with tweaking and failure to read and research ;)

Just read Posts #1-3 fully, especially, disclaimer, requirements and installation instructions. Be sure to flash the correct kernel for your device !
[Galaxy Tab S Original Android Development] fedecape:
An honest opinion :)

I'm ok with experimental stuff, just wanted to confirm it is usable.

Thanks for the tips and for the contribution.

Will let you all know how it goes!
[Galaxy Tab S Original Android Development] UpInTheAir:
We aren't going to "lie" here .......... :)

If there was any major problem, it would be posted in thread or bug report ;)

I just meant that, the question wasn't suited to a Development thread, more suited to Q&A ;)

Happy flashing.
[Galaxy Tab S Original Android Development] UpInTheAir:
v1.9 released

R3_v1.9 kernel is now released for supported 8.4" models :)

Change-log is in Post #2.

T700

WIFI

R3_v1.9 is untested. Please let me know how it goes........

Ensure you flash the kernel for your device model !!

NOTE: commit credits are in source.

If you have Synapse issue after UPGRADING, please force stop app and delete Synapse data/cache first ;)

Further instructions in Synapse app & Posts #1-3

For better battery life, try ONDEMAND GOVERNOR and recommendations in Post #3

Enjoy :good:

Cheers,

UITA

.
[Galaxy Tab S Original Android Development] UpInTheAir:
v1.9.1 released

R3_v1.9.1 kernel is now released for supported TW 8.4" models :)

BUG FIX > Change-log is in Post #2.

T700

WIFI

R3_v1.9.1 is untested. Please let me know how it goes........

Ensure you flash the kernel for your device model !!

NOTE: commit credits are in source.

If you have Synapse issue after UPGRADING, please force stop app and delete Synapse data/cache first ;)

Further instructions in Synapse app & Posts #1-3

For better battery life, try ONDEMAND GOVERNOR and recommendations in Post #3

Enjoy :good:

Cheers,

UITA

.
[Galaxy Tab S Original Android Development] texeros:
I try to flash the V. 1.9.1 but with not success. I have installed the V. 1.9.0. Any idea? Thanks
[Galaxy Tab S Original Android Development] Gilg@mesh:
it's no problem, I got the answer on that in the T800/T805 thread
[Galaxy Tab S Original Android Development] almaftoooon:
Dear all,

Can you please tell me how is the battery life with this Kernel..
[Galaxy Tab S Original Android Development] slackerz_86:
I tried 1.8.0, 1.9.0, 1.9.1, and all i have been getting is No UCI Support Detected in Synapse. I cleared data/cache of Synapse, rebooted my T705, uninstall and reinstall back again but still the same. Anyone else has this problem?
[Galaxy Tab S Original Android Development] UpInTheAir:
Simple things to try, but please yet again in this order:

1. Force stop Synapse

2. Clear data in

3. Uninstall Synapse

4. Delete /sdcard/SkyHigh folder including logs, profiles etc.

5. Delete /res folder

6. Re-Flash kernel in recovery

7. Wipe cache & dalvik

8. Re-Flash kernel

9. Reboot

10. Reboot again after 2 mins

11. Install Synapse fresh from Google Play

12. Run app and ensure SU permission

13. Cross your fingers (edit: and toes)

Maybe a few things uneeded, but let's cover all bases anyway
[Galaxy Tab S Original Android Development] UpInTheAir:
Due to real life commitments, I will be away for quite some time, so I have asked the RC-RT Committee / Senior Moderator to revoke my RC title. I might even move on out of here to a forum without BS. I have been invited elsewhere, and might just take up that offer. Wait and see.

Best of luck to all users and happy tweaking !
[Galaxy Tab S Original Android Development] slackerz_86:
Tried all these step by step, but still got the same result.... i don't know why.......... wargh!!!!!!!! ?
[Galaxy Tab S Original Android Development] UpInTheAir:
1. Maybe try above, but instead flash stock kernel (will lose wifi password etc - so backup it up with Titanium or whatever).

2. Then after everything, flash the kernel

If the above still doesn't work, uninstall your ROM busybox from xbin (or rename it .bak) , and try again.

If still no good, I don't know because works fine me on stock official ROM.
[Galaxy Tab S Original Android Development] slackerz_86:
Can it be because of busybox??
[Galaxy Tab S Original Android Development] UpInTheAir:
The kernel uses it's own /sbin/busybox for synapse functions, maybe the app is using ROM BB ........

Try it, if none of the above work, I can't help and suggest to use the kernel with stock ROM.
[Galaxy Tab S Original Android Development] UpInTheAir:
GOOD NEWS

As I requested, [MENTION=1141664]PG101[/MENTION] has kindly removed my Recognised Contributor status. I can now be treated equally. As some might otherwise think, RC is not an honour, but a handicap, governed by different rules and "higher ethics".

The RC title does nothing for my contributions, an I only ever applied for the title so I could share my work via dev-host (which permitted large single DL size for ROMs). I am now happy to be relieved of those constraints.

As I said, I am heading away for a while, and will think hard whether I'll bother to continue at XDA, otherwise I'll and take my work with me and move in another direction.

Have fun with the kernel, could be the last thing I contribute here, XDA isn't the same place as it once was.......... leedroid was my first custom ROM flashed, he was one of the best :)
[Galaxy Tab S Original Android Development] Gilg@mesh:
sad to hear, best of luck, hope you come back anytime soon, these devices need some love :)

Sent from my GALAXY S5
[Galaxy Tab S Original Android Development] PG101:
Hi,

I am sorry you feel it was more of a handicap than anything else. I wish you would have let the committee know earlier, we wouldn't be discussing this.

Anyway, now my advice to you is that since you wish to take a break, please do - XDA doors are always open..:)

Cheers!

PG
[Galaxy Tab S Original Android Development] NerdFurgison:
Upintheair, best of luck and thanks for everything. If you decide to continue work somewhere else please please please pm me and let me know where I can follow you, I love your kernel. Again best wishes and thank you
[Galaxy Tab S Original Android Development] richyg81:
Thanks for all your work on this kernel, hope you reconsider leaving us.
[Galaxy Tab S Original Android Development] ezas:
Sad news indeed. Do you have a donate link. Would love send a small thanks for your work. Otherwise, best of luck as you move forward.
[Galaxy Tab S Original Android Development] ramyeohy:
Let us know where you are heading. I am using your kernel since Note 3.
[Galaxy Tab S Original Android Development] gggg:
So sad that you will leave ... liked your work !!!
[Galaxy Tab S Original Android Development] jodvova:
So what's happened to XDA ? Interesting to know.
[Galaxy Tab S Original Android Development] mordeith:
Works well,thanks ,8.4 owner btw
[Galaxy Tab S Original Android Development] longus catus:
I'm going to pretend I didn't read the last page in this thread

Can you save the last_kmsg when the device goes into "show the battery" mode, because it gets erased when the system kernel boots?

If sboot boots your kernel and scripts when it shows the battery icon, I suppose this is a matter of safely mounting a filesystem, saving a dated last_kmsg, and then pruning files older than a certain amount of time from the system init.d. last_kmsg may be corrupted since the ram will be off for some time but if I wanted to reliably get the console output, I'd open the tab up and find the serial lines. The only other way of getting a last_msg that isn't of the kernel booting to show the damned battery icons is to hold down the power button as the device freezes and reboots...which requires presence of person and mind to pull off properly.

I just want to have some idea of what happened, and humans are amazing at finding patterns, although sitting on the other side of the table is AFSK-30, which can be decoded at a SNR below humans' detection threshold, or something very similar to what I said.

I suppose the battery mode script would mount a filesystem synchronously, write a dated last_kmsg-YYYY-MM-DD-HH:MM or maybe epoch date if I felt like I wanted to be masochistic and make sure it stops working in 203?, and in the system init.d, prune files older than 30 days. Well, that's what I would do if I was building an imaginary kernel in my head. Permission granted to do it or not do it.
[Galaxy Tab S Original Android Development] gcappa:
Been using the SuperSamsung Rom and Skyhigh kernal since I bought the Tab S. Thanks for your hard work. I could never use stock roms ever. Good luck on whatever you set your sights on.
[Galaxy Tab S Original Android Development] chrispgibbs81:
Leedroid was an awesome ROM on the Leo, and what a fantastic handset was in those days! Will be a shame to lose such an integral part of the community, although it has become so heavily populated it can sometimes feel less like a community!

Take care bud, thanks for all your hard work!
[Galaxy Tab S Original Android Development] chrispgibbs81:
Just a quick question, have installed the latest kernel for the T705, the OP says it should be v1.9.1, in my settings it tells me I have v1.9.0?

Just a query as to the discrepancy?
[Galaxy Tab S Original Android Development] Gilg@mesh:
don't worry, you have latest version.

Tapatalked from my GALAXY S5
[Galaxy Tab S Original Android Development] chrispgibbs81:
And it's awesome. Just wish it didn't have touch 'whizz' stuck on the end of it! Hah well, just getting my debian system out now to try to rectify that little problem! Not that I have a clue what I am doing just yet! ?
[Galaxy Tab S Original Android Development] danny19901:
Sorry to bother you's all but where can I find developers settings on latest firmware T905 LTE I messaged Samsung and they said settings > More > development settings but I have tapped build number several times and says I am now a developer but can't find the settings
[Galaxy Tab S Original Android Development] pibach:
Same here, installed v1.9.1, settings tells v1.9.0.

But it crashes. I.e., runs fine 1min, then freezes, then reboots, without interaction nor any message.

Returned back to v1.6.0

How does the Oloendithas kernel relate to this kernel ?

http://xdaforums.com/galaxy-tab-s/orig-development/kernel-t705-tw-oloendithas-kernel-v1-0-t2911207
[Galaxy Tab S Original Android Development] chrispgibbs81:
I haven't tried the latest version of that kernel as yet, I stuck with this Kernel on Liquid Smooth 3.2 it was running really nicely!

Then found myself needing a flash fix... Currently running Cancdy Kat with the stock kernel... Will try this Kernel on there prob tomorrow to see how they combine!

Regards to v1.9.1 (mislabelled (file name not updated?) as far as I can tell as v1.9.0) crashing, it worked smooth as anything for me, without a single crash or reboot! What ROM are you running and did you try to redownload? Also what did you flash it with? I have the latest Philztouch
[Galaxy Tab S Original Android Development] pibach:
I was on stock ROM. Now switched to Selamba ROM V1.2.1. Gave the SkyHigh Kernel another try. Same again. Freeze and crash. The did a reboot. It seems to work stable now.

Probably the overvolting kicked in?

I do flash with TWRP Manager, allways wiping Cache and Dalvik.

Tried to run Antutu for benchmark comparison. Did not make it through.

Strange.
[Galaxy Tab S Original Android Development] chrispgibbs81:
My initial thought is do you have a kernel mod app like trickster installed? It could be trying to force settings incompatible with the newly installed kernel...

Otherwise, although I know many people have had success installing with TWRP, might be worth giving Phiztouch a try...?

http://xdaforums.com/showthread.php?t=2201860
[Galaxy Tab S Original Android Development] pibach:
After a reboot, it seems to run stable now. Synapse did a fall back to stock clock and voltage levels. Might be the newer kernel is more sensitive to overclocking/undervolting? Does not sound very likely. More likely it is, because I did it at low battery without power supply plugged in?

Tried another Antutu and it went through. Same 36000 Points as with V1.6.0 kernel.

Regarding Oloendithas kernel , I would appreciate some correction of the auto brightness, as that does not work properly.
[Galaxy Tab S Original Android Development] UpInTheAir:
My "skills" are very limited. Maybe, maybe not. I don't have the time to even look at it, let alone research what needs to be done.
[Galaxy Tab S Original Android Development] jball:
Thank you for the reply

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