yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] K9100ii:
You're welcome. :) It's not really adding safety, we just want to bypass Safetynet which was put in place by Google to detect rooted devices which checks for a valid device fingerprint as well as root access. Changing the fingerprint will work as long as the fingerprint is from an Android version older than Oreo, such as nougat, without changing the security patch level, [and the architecture of the firmware for which the fingerprint is for is also 64-bit].

EDIT: in a previous post, I've noticed I put 'magisk safetynet'. It is actually Google safetynet.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] RichyE:
Normally you can do a dirty flash with the same Rom when the update comes out.

You just flash it without wiping anything, some times it's recommended to wipe davilek/cache after the flash and then reboot it.

Your settings and apps will be still there.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Casper Young:
If you know how to root your phone, then you surely know how to find an APK somewhere other than the Play Store. And yes, Netflix still operates on devices that it’s installed on, it’s only the Play Store download that’s prevented. There is some odd reasoning behind Googles intentions that I don't fully understand. Basically, in preventing the Play Store download of popular apps, Google is just, intentionally or not, directing rooted users to third-party sources in search of unauthorized APKs. And if that’s an attempt to increase device security, then it seems like a misguided one.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Joe James:
Deleted...
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] starbright_:
Is this still an issue? Did I understand you right, after sleep it operates just with the 4 little ARMs?

Isn't sleep a status that device will have most of the time - if it is not used and screen is off?

That would mean - it always works only with the 4 little ARMs?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] K9100ii:
In my experience, yes, this is still an issue, and yes, you have interpreted it right. In sleep (yes, when the device has its display off and is unused), something seems to be setting the 4 big cores to not go online completely using hotplugging, but when it's woken up, the 4 big cores remain completely offline and it's not possible to get them to go online anymore along with those kernel logs I posted, and only 4 little cores are usable.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] starbright_:
How can I check this? If I run htop in terminal I can see up to 8 cores ....
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] K9100ii:
To test, put your tablet to sleep for a few minutes (turn your display off and leave it). Then, wake it up, and see if only 4 cores are online, and run dmesg to see if you get the same kernel logs as me.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] starbright_:
No problems here.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] K9100ii:
Thats very interesting. What could be causing issues on my device?

Are you on the latest release? There have been kernel updates with some releases.

Edit: attached are 4 screenshots. The screenshots showing 4 cores are after sleep, the screenshots showing all 8 cores are after a reboot and I expect to have all 8 cores after sleep as shown in those screenshots.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
It is normal for the four small cores to be on and the big ones off. The design of the BIG/little SoC is to use the slower little cores for normal usage to save battery drain and only turn on the BIG cores when needed. To tell if the BIG ones are working, run the Antutu benchmark app and then look at the info page. If it says the CPUs are clocked at 1.6ghz, then that shows the BIG cores were used.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] K9100ii:
Both the big and little cluster run at the same 1.6GHz as evident by my 8 core kernel adiutor screenshot and also the exynos7870 DTB in the kernel sources (which is here: https://github.com/Valera1978/andro...eage-16.0/arch/arm64/boot/dts/exynos7870.dtsi look for the "cpufreq {" block) . Antutu says that it runs at 1.69GHz, but detects only 4 cores after deep sleeping. The big cores never come online after sleep, even when doing CPU intensive tasks.

Finally, all of the cores worked on the stock firmware even after sleep like I'd expect them to.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
I could be wrong but I still think all of the cores are still working. I ran Antutu and got a result of just over 85,000. Much the same as I get using the Bliss ROM. Then put the tablet to sleep for 45 minutes. Woke it up and ran Antutu again and got a result of 84,270. Not enough of a difference to suggest something isn't working.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] K9100ii:
I have run 2 benchmarks with Antutu. The 4 cores offline benchmark is probably slightly inaccurate as I forgot to quit out of a few running apps.

4 cores offline after sleep:

81876 total score:

30707 CPU, 7664 GPU, 26436 MEM[ORY], 17169 UX

8 cores online straight after reboot making sure the tablet doesn't go to sleep:

89175 total score:

37580 CPU, 7715 GPU, 26378 MEM[ORY], 17502 UX

Like I say, the 4 cores offline test is probably slightly inaccurate. There is certainly a difference here for me. Antutu doesn't seem to use all 8 cores effectively.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Kevin36:
How can i improve speaker audio?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Jcth1:
I just sold my tab a6. Many thanks for the work to get this running los16. Was really happy with it.

Will still subscribe incase I acquire another one in the future.

Thank you for the work that was put into this.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ShonkaiDJ:
Hey there. I'm wondering. Does the sm-t580 actually have a compass on board?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Casper Young:
That would depend on which model you have. It breaks down as such. The T580 16Gb version does not have a magnetometer/compass. It also doesn't have a gyroscope but it does have a proximity sensor. The T580 32Gb version has a digital compass, and a gyroscope along with everything else.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] K9100ii:
Hi,

Where did you get this information? I have a 32GB white SM-T580 and I only have an accelerometer, light sensor and "grip sensor for WiFi". The Samsung's stock v3.18.14 kernel for the T580 is for both the 16GB and 32GB, and I looked at the defconfig. This is an example of a fully working kernel that should have minimal issues. The enabled sensors drivers there are the same as our kernel here, so even in stock, these sensors I have mentioned are the only sensors that would be detected. The only difference between the 16 and 32 GB variants as far as I know are internal flash storage sizes. Samsung doesn't list any sensors other than an accelerometer on the product page for the 16 and 32 GB variants of this tablet.

Also, for everyone, I have found a workaround to the bug I have been experiencing. It is a bad workaround, which is simply disabling hotplugging, but it works and all 8 cores are online and usable even after putting it to sleep. To disable hotplugging, run this command:

echo 0 > /sys/power/cpuhotplug/enable

I run it right after rebooting.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] K9100ii:
I simply took a look at init scripts in the ramdisk to start with (https://github.com/Valera1978/android_device_samsung_gtaxlwifi/tree/lineage-16.0/ramdisk). The init.power.rc script contains commands involving that path, which I thought was relevant. Let me break down the path I write 0 to:

/sys - this is sysfs, containing files to which parameters can be written or read to get information for drivers.

/sys/power - sysfs directory for power-related stuff.

/sys/power/cpuhotplug - directory created by Samsung's exynos CPU hotplugging driver to control some parameters.

/sys/power/cpuhotplug/enable - file created by the driver, allowing it to be enabled or disabled.

Not sure why there could possibly be any huge issues...

As for looking for enabled sensors drivers in Samsung's stock kernel, I download the sources from the Samsung open source release centre, look for enabled sensors in the defconfig in arch/arm64/configs and compare enabled sensors drivers to the defconfig in the kernel that we're using. They're the exact same. In the end, I'm not sure how you find anything hilarious, I should be laughing at your apparent stupidity and 'I know everything' type of attitude you appear to be expressing.

In case you don't understand, the second half of my post was intended for everyone here, so I'm not tossing commands around for just you.

The site for the 32 GB version is extremely inaccurate. Not only does it specify non-existent sensors (which I can confirm don't exist), it also specifies other things that it definitely doesn't have, like a fingerprint sensor. Samsungs official specification list on Samsungs own site lists nothing more than an accelerometer, and any other sites with at least some accuracy don't really either. Finally, notice how I mentioned official Samsung specification list, even in my previous post. I DID search up the specifications, and I used a FIRST PARTY SOURCE. I don't see whatever garbage site you linked in my search results, unless maybe if I go 200 pages into the search results, or I'm in your region (I'm assuming India since the currency on that site is rupees), and I trust other sources that are more reputable even if I get these garbage sites. The argument you make about not being able to search specifications up is completely invalid.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ShonkaiDJ:
Hey Jackson. Is that near Tuolomne? I think I drove through Jackson a couple of times. Don't they have an annual lumberjack competition of some kind? I think I visited that too and remember it well. Thanks for answering man. Though either Movertix trying to sell the stuff is lying a bit or my sm-t580 32*GB is broken. I couldn't get the compass to work nor find specs for the tablet in a reliable place on the internet. That's why I was asking here. Where the ones that know and understand code make my preferred ROMs. I'm not good at that either but I don't think that makes anyone more smart or more dumb. It just tells you something about what anyone in the community pays more attention to and spends more energy on. We all have only 24 hours a day and have to sleep every once in a while.

Not everyone is your enemy. Don't let them mess around with your head. I understood the second part wasn't meant as a reply to either you or me. And it's ok that you look at sources like Movertix. It's even better you were the first one to reply to my question. It seems to me you're being a great addition to XDA. What I do; I check the terminal command to learn from it, I check the code to learn and I hope one day I will even be able to share useful knowledge concerning code. Thanks for being willing to join and share. Enjoy XDA for what it is. (Not your enemy)

---------- Post added at 11:06 PM ---------- Previous post was at 10:51 PM ----------

Thanks for your thorough and specialist reply. It seems like the best and most logical answer. I learned a long time ago that it is usually cheaper to make the same board then it is to make an extra board with such a small difference. Working for a broadcast company that makes custom build environments for television productions in the complete production line, we even build in elements our clients don't pay for. Yet, because we know they are going to ask for it once everything is up and running, it's a lot cheaper to be able to turn it on than to add it to that environment.

Great lessons when you're tech-savvy.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] fonix232:
It's highly unlikely that Samsung would introduce such a glaring feature difference in variations of the same model that, on paper, only differ by the storage size.

I'd sooner find it more likely that third party websites report this imprecisely, to boost sales (or by simply copying data from another third party that made an incorrect assumption).

I can confirm that the 16GB T585 has two sensors that actually respond: a K2HH accelerometer (used for the screen rotation, mainly), and a CM3323E light sensor (used for automatic screen brightness). The tablet also reports an SX9306 grip sensor, but I firmly believe this is because of the vendor image I'm using currently - which is from the SM-A600N.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] K9100ii:
Yes, precisely, that's what I'm thinking. It's not viable for Samsung to have 2 variants with such changes, either. It is easier, cheaper and more viable for them to just have 2 variants in production with the only difference between the 2 being just having different flash memory chips of different sizes that are interchangeable. Its definitely indeed either very incorrect assumptions, copying from another inaccurate source or incorrect information for the sake of sales boosts. Those sensors you have are also the only sensors detected on my 32 GB, WiFi only T580, and the grip sensor also doesn't appear to really do much here.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] dizzymon:
Flashed TWRP 3.1.1 on recovery. Then got the encryption didn't finish error. So I went into TWRP and did a repair on the /data/ partition. Then I flashed the Rom, Gapps, and Magistk20 and now I'm stuck on the Lineage splash screen. Any advice? I have tried clearing the cache and factory reset in TWRP but no dice. I've also tried flashing it using Rom, gapps, SuperSU and waiting to see if it will get out of the splash screen.

-Update-

Flashed it multiple times failed with all files so I proceeded to just flashing the ROM itself and did that twice which seemed to work. Then I proceeded to flash google apps. Now I think I'm back to the same boot loop. Again so I think it might be either the version of gapps or the Magisk that caused the problem. I'm stuck in the Lineage boot screen again.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] antoine62:
You need to wipe system, data, cache and dalvik
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] dizzymon:
Really strange, I ended up just wiping everything and flashing the ROM first then booted it up, then proceeded with flashing gapps pico and it worked fine. Most of the time I could flash everything on tablet/phone then boot up without problems. First time having to take it one step at a time. The problem I have is repeatable as I've spent a day messing with it to see if it was just a bad flash or file issue.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] LordOdin61:
I installed the latest twerp and what i thought was the latest Lineage and everything seemed fine. I was on my PC looking at some e-mails and one said a new device had tried to access my google account and it was a Xiomi or however it's spelt and if i don't recognise this i should change my password, well you know the kind of warning, anyway it turns out it was me on my Samsung 585, i followed the video to the letter and can't understand why my Samsung is now a Xiomi.

Any help or advice appreciated. Thanks
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] dizzymon:
Samething happened to me. If you look at the "About Tablet" you will see Xiaomi.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] LordOdin61:
[MENTION=8235805]dizzymon[/MENTION], did you find a way of sorting it and making it show up as a Samsung ?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] RichyE:
I think what you see it the fingerprint.

As Xiaomi is to bypass safety net checks with magisk, stock Samsung fingerprint does not bypass safety net checks.

You can always change it if you don't like it.

I think it will be here:

Check in /system/build.prop:

ro.build.fingerprint=Xiaomi/sagit/sagit:7.1.1/NMF26X/V8.2.17.0.NCACNEC:user/release-keys
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Casper Young:
Do not talk down to people!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] LordOdin61:
I have no idea whats going on here, at the end of the day i would like my Samsung to be a Samsung and not a Xioami, i am new to all this upgrading etc and don't have a clue what i am doing unless it is explained or shown to me,I have TWRP recovery installed on my tablet and what i would like is a Pie rom or even Oreo and a latest no-verity and a g/apps that i can install with Odin (which is the only way i know). I have looked for links but have no idea where to look and tbh what to download, any help with said Links would be greatly appreciated.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Casper Young:
What's going on currently?

I have no idea what's going on with all of you but I'm definately going to pay some attention. My build number identifies as a Google Pixel Device is yours any different? PQ3A.190801.002
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] K9100ii:
I'd have to question how old you are myself, and if the age you say you are on your profile really is your age (Just took a look at it, I don't really look at profiles), but I'm not really going to because age doesn't give much away for what a person maybe like as there's other things to consider besides age. The awful remarks you make (I don't even see how you supposedly gave any form of credit to me), pointless ranting, attitude of "I know it all" again when you really don't seem to, pulling in politics when there is nothing to do with politics (I personally am not political whatsoever, and by the way, good to know you're not in India. I really don't care, though, and many people lie about where they are anyway which is fine for hiding identities. I see you've said you're in California on your profile, but I really don't read profiles, again, and when I do, I barely ever see people put any type of location. You take it so extremely seriously when it's an assumption based on the currency on that site) and so on has all given me a bad impression on you. You got what you wanted: explanations for my findings, as well as my thoughts on your response. Your rant that's exceptionally bad and in incorrect formatting of quotes was an eyesore to read, thanks.

Last thing: you might want to read one of your previous replies to me. The one I replied to. You might regret having written that when reading it again, and if you do regret writing it, you can then think about it and hopefully realise with at least some rationality why you're getting such an opinion and somewhat harsh reply, though I tried to not go too far, from me.

The device fingerprint is not the build number, and that is a generic build number for Android 9.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Casper Young:
The last thing I want to do is have some stupid argument with someone. Over what exactly? On one hand I give you a lot of credit for knowing what you know about Androids. On the other hand I wonder just how smart you are by how I seemed to have noticed you were talking down to me like I was someone beneath you. I find it funny that you think you know how I am in any way shape or form. You may notice in my initial comment to you was not rude so where is this attitude that YOU are expressing towards me coming from. For what reason is it? Check this out kid. I will not have this kind of discussion here on XDA. Whatever your issue is. Do not argue here! That would violate their policy.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] K9100ii:
Hi,

The first part of your post is exactly what I'm thinking, but I don't see how you're giving much credit. Notice the tone of my reply before my latest reply. I stated that you appeared to be expressing stupidity, not directly saying you are stupid in anyway. I'm saying what I think based purely on what you replied, and did not make any assumptions on what you're like in real life, only the impression you're giving me. I fail to see how your reply wasn't rude, as you were replying and demanding answers (for what I assume you thought was just for you, but it was actually for everyone even though I didn't say so.) in a condescending manner where you manage to find something hilarious. Assuming I am a "kid" just to make some type of point is an extremely bad thing to be doing for reasons of integrity on a place like this forum.

Finally, I really hope we don't have to take this further, but out of respect for the OP of this thread [MENTION=2047373]Valera1978[/MENTION] who did great work getting LineageOS to work on this tablet, you can PM me if you really need to take this further, but it's of course, not ideal to do so. The forum rules don't really disallow arguing, as long as it doesn't get too over the top, political, and other things. Have a nice day.

Edit: in reply to your latest reply, I accept and will try to communicate better. I'm glad we've reached a conclusion. In your latest replies, yes, you have been saying so, but I myself am still learning lots of things about both Android and the Linux kernel, I think I still have a lot to learn and I don't think I am anywhere near writing code for blobs, but sure. I share knowledge with people who may need it and report findings on issues I report if I can find anything. I would've preferred a PM, but what's done is already done and everything is fine.

Note to self: In many cultures, including and mostly 'Murrican culture, politics is an addiction that causes the urge to bring in politics where it doesn't really belong (such as unrelated social media comments and even work causing conflict) for a considerable amount of people. Many other people (that are apolitical or just able to spot such people and know why it's somewhat annoying) point out people that bring politics into places where it doesn't belong, but it doesn't really end well with continuing arguments. It's not really something that can be stopped for as long as politics continues to be significant. Nothing against these types of people, though, I'm just going to move on.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Casper Young:
My apologies if we seem to be taking each other as somehow rude. I am not trying to be. I have stated many times that you seem to be quite knowledgable of things Android. Actually I'm kind of impressed. I would never think that post here are specifically for me unless someone is giving a direct response. I wish I knew close to what you do and maybe this would be a lot easier for me. I'm working on it. Maybe if you have time you can learn me a few things considering I was trying to tell you what I know of programing is ancient compared to writing data blobs for Androids. But that's what this place is for on some levels. I wasn't trying to be political by saying where I live seems to bread stupid Democrats. If you're not from this Country It's difficult to explain. Most of the time my attitude is jovial. So we misunderstand each other at first. I'd hope for better communication between us henceforth, fair enough?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] starbright_:
Do have a technical questions, maybe someone can help.

I am running version 580 with LOS 16/Builddate Dec/11/2019 - thanks ahead for this! I love it.

Nevertheless I do have some trouble with the flip cover. The TabA seems to be very sensitive. So if I open the Cover it wakes up - fine. But if I flap it for 360° (so to the back) it goes off again. It seems the magnet field is there to strong or the sensitivity of software to high.

I couldn't find the switch to disable the flip cover handling? Can someone help me?

As a maybe even better alternative - is it possible to adjust the sensitivity/threshold of the sensors?

Thanks for any hint.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] PK5ive:
When will the next update come? Is this project dead?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] dizzymon:
Nope I have not touched it. I really don't mind what shows up on the about as long as there is no security risk to my tablet.