yashsingh1/xdaforums huggingface dataset:
[Galaxy Tab S2 Android Development] M.Miethke:
SM-T815 battery drain

Hi,

would like to give a little feedback.

SM-T815,

clean flash

lineage-17.1-20201102-UNOFFICIAL-gts210ltexx

capacitive buttons are working, but no light

biggest issues is massive battery drain

tried without mobile connection – better but not well

look same issue like #1458 for T810

Any idea how to fix this?

Back to los 16 is a step back.

Can I support with logs or some troubleshooting/testing?

If yes, how?
[Galaxy Tab S2 Android Development] -DIO-:
Tell me what needs to be done to the lighted buttons to work ?
[Galaxy Tab S2 Android Development] Joska2020:
Battery drain

Same here, high battery drain over night, up to 40% in 8 hours. Secound problem is wifi-disconnection very often. No automatically reconnect.

If I try to get information about battery drain using the inside function, no app is listed, I can see a constant drain over the whole period.

Joska
[Galaxy Tab S2 Android Development] sal82:
You misunderstood me. The buttons work. Is the light necessary?
[Galaxy Tab S2 Android Development] -DIO-:
Yes.
[Galaxy Tab S2 Android Development] paul c:
This is not unique to the 17 builds. It has been a constant - at least for me with an 810 - for the 16 builds.

I think it's because of LOS's difficulty with the non standard layout (hardware button in the middle plus soft buttons either side).

For me it's just a minor issue, no big thing.
[Galaxy Tab S2 Android Development] MrBlubke:
not sure what you are saying here, bit about 3 or 4 builds ago, de buttons worked AND lit up in los 17
[Galaxy Tab S2 Android Development] MrBlubke:
oops double post, sorry couldn't find a way to delete it...
[Galaxy Tab S2 Android Development] -DIO-:
Tell me what to do to make the buttons LIT? Please!
[Galaxy Tab S2 Android Development] MrBlubke:
search or request the build from oktober 28 if I remember correctly that's the build where the lights worked.

I might still have it, but it's up to [MENTION=6005084]ripee[/MENTION] to decide whether it's ok to be shared (since it's no longer on his repository)
[Galaxy Tab S2 Android Development] -DIO-:
Why will he be against it, upload it to Google Drive and link here.

The assembly is needed for

- SM-T815 / Y: gts210ltexx
[Galaxy Tab S2 Android Development] MrBlubke:
sorry, I only have the rom for t810 not t815... since my device is t810... maybe someone else can help?
[Galaxy Tab S2 Android Development] mlrs193:
T710 on 17.1 battery is going out very fast even when doing nothing almost from 50 to 0 % at night doing nothing.

Any fixes ?
[Galaxy Tab S2 Android Development] -DIO-:
Please give a link to the assembly from October 28 LOS 17.1

- SM-T815 / Y: gts210ltexx
[Galaxy Tab S2 Android Development] ayoraider07:
I 'fixed' my button backlights by Flashing magisk 19.3, but this was on AOSP (android 9) Maybe flash some similar(older) versions of magisk and it might fix the lights.
[Galaxy Tab S2 Android Development] bowtie81:
got this succesfully installed, but noticed also that the key lights do not function, tried to cycle the setting on and off. Also got a random reboot that never booted past the loading screen. Then rebooted by holding power and volume down and got back to LOS. Hope this will turn to OTA updates and nightly updates.
[Galaxy Tab S2 Android Development] -DIO-:
Thanks, I also installed AOSP, everything works and glows :highfive:
[Galaxy Tab S2 Android Development] dadaa1:
T-810 and 17 version of this rom newest. No deep sleep so battery drain is huge. Very pleased everything else. Restart helps. Now deep sleap is working
[Galaxy Tab S2 Android Development] jfmenard:
I have T-810 and seeing the following issues:

- Huge battery drain, 40% in an hour this morning

- Unstable wifi, keeps disconnecting. Disabling & re-enabling Wifi reconnects succesfully.

- Unable to use/format SD cards. Formating stops at 40%, then SD card shows as corrupted

- Fingerprints reader doesn't work on lock screen, but works fine otherwise.

[MENTION=4929371]dadaa1[/MENTION] I have the same model (T-810) and seeing the same huge battery drain. Are you saying just restarting the tablet resolved the issue for you?

Question: What is the status of 16x builds? Are they more stable? Should I use them until 17 stabilize?
[Galaxy Tab S2 Android Development] sal82:
I have the same tablet and I'm on 17. My battery doesn't have huge battery drain, quite the opposite actually. Look at your battery stats. Maybe there's an app that's draining the battery? It might also be a Google app that's draining the battery. I use the nano gapps.
[Galaxy Tab S2 Android Development] robertmc8:
Does anyone have for TS 713 gts28viewifi?

---------- Post added at 10:31 PM ---------- Previous post was at 10:29 PM ----------

Wrong threads
[Galaxy Tab S2 Android Development] freddy_galaxy:
I'm on 16.0-20201111 dirty flashed over 16.0-20200921 w nano gapps. Works great! Stable and snappy. Fingerprint unlock not working after deep sleep so I use a wakelock app to keep it working when wanted. Also buttons don't light up, but I don't mind. Battery usage greatly improved over 17.1-20201028.
[Galaxy Tab S2 Android Development] jfmenard:
Thank you guys for your replies.

Before I switch to 16, I decided to give another chance to 17.2 and re-installed with stock GApps last night, but this time, didn't configure fingerprint reader. Battery drain seemed gone overnight.

I took a chance this morning & enabled fingerprints reader, and don't know if it a coincidence, but battery drain was back. The application that was identified as the cause was Chrome, which is weird since I hardly used it... (Even though I suspect some other apps, like Facebook, are using it underneath)
[Galaxy Tab S2 Android Development] Cydras:
Thank you for the rom! I bought the tablet for my dad and all is working great :)
[Galaxy Tab S2 Android Development] mac231us:
old problem not solved apparently over the years for Samsung tablet phones - something to do with speaker microphone arrangement-thought it would have been solved by now. I was considering getting this device again.
[Galaxy Tab S2 Android Development] BizzaBoy:
Is there a way to disable the fingerprint reader after the initial install ?
[Galaxy Tab S2 Android Development] tripLr:
Are you completely disabling security like fprint or keeping pin/pattern ?
[Galaxy Tab S2 Android Development] MrBlubke:
delete all fingerprints?

hmmz... come to think of it... I think you idd need to set some other kind of security (or disable it all together)
[Galaxy Tab S2 Android Development] M.Miethke:
battery drain issues T815

have tried to debug power drain by my own

installed Gsam Battery Monitor

Power drain source is LineageOS-System

Waklock Details

biggest consumer

deviceidle_maint

kernel wakelocks

vfsspi_wake_lock - runs for hours

I made the following survey:

device turns off

waiting a wile

if I touch on of the capacitive buttons

a haptic feedback happens

look like a issues with the buttons and sleep

is it possible to disable capacitive buttons for testing?
[Galaxy Tab S2 Android Development] freddy_galaxy:
Ok so my device just rebooted randomly and now my buttons are lighting up. T810 on 16.0-20201111. Weird. Anyone else experienced this?
[Galaxy Tab S2 Android Development] MrBlubke:
not really but I'm on los 17... no lights for the buttons here so I'm still waiting for next build for this and the wi-fi disconnects...

same device though t810
[Galaxy Tab S2 Android Development] dzieffczynq:
I am having trouble reinstalling this ROM. After installation, the Lineage OS logo fires up - after about 4 minutes it returns automatically to TWRP :(

I have a very similar problem after installing AOSPExtended, where only colored balls appear.

Anyone had a similar problem?
[Galaxy Tab S2 Android Development] snsnse:
Equalizer/volume boosting

Can someone recommend an equalizer app (mostly for volume boosting) that works as well as VLC's built-in one? I tried many in the past, none of which performed reliably and satisfactorily for me. My tablet is a T815.
[Galaxy Tab S2 Android Development] zed011:
T710, Battery drained in about 40 hours standby with wifi off and no apps running. Seems like I'll have to move off this rom until it's resolved
[Galaxy Tab S2 Android Development] tripLr:
What build?
[Galaxy Tab S2 Android Development] zed011:
17.1 20201102

I just did a factory reset, will see what happens again with wifi off and no login or any google play apps installed. No screen security enabled but last time I didn't either
[Galaxy Tab S2 Android Development] mparmpas122321:
Yes, I experienced the same on T810. Sometimes there is minimal battery drain with WiFi off and idle, other times there is huge drain.
[Galaxy Tab S2 Android Development] ginandtonic123:
Yes, same here with T810, more battery drain than on android 9 ROM
[Galaxy Tab S2 Android Development] KingN96:
hi guys, i just installed this rom on my T815 LTE. Very cool but i have problems with mobile network, always "no services". I tried to switch from lte to 3g but same result. Is it a know problem and is there a fix?

Thanks
[Galaxy Tab S2 Android Development] zed011:
Right interestingly enough I experienced the same. Yesterday I restarted the tablet then unlocked it then let it sleep for 24 hours with wifi off still and it didn't drop 1%. Now I'll turn on wifi and see, google account not added yet though

Was the standby drain a lot less on lineage 16 for you?
[Galaxy Tab S2 Android Development] xT29c:
Bug Report!

Model: SM-T810: gts210wifi

Root: Yes

LineageOS Build: lineage-17.1-20201102-UNOFFICIAL-gts210wifi

When I plug in my MHL hdmi adapter, the device will instantly crash, and reboot.

Does not happen on stock firmware.
[Galaxy Tab S2 Android Development] yoshkapundrick:
How many Chinese components are in your S2?
[Galaxy Tab S2 Android Development] jaysusw:
I have exactly the same issues on a T810
[Galaxy Tab S2 Android Development] zed011:
I switched from 17 to 16, no more battery drain and can idle for almost a month
[Galaxy Tab S2 Android Development] MrBlubke:
can't really say I have battery drain on my t810 though... but I wish wi-fi would recover faster after waking up (from deep sleep orso)
[Galaxy Tab S2 Android Development] aku47_:
I clean installed LOS 16 on my SM-T710 and while the performance was pretty great, the charging for some reason has become extremely slow. I plugged it in at 13% for a whole night and in the morning it was at 43%. My charger is the original samsung charger and I also tried other chargers.

I searched the thread and a few more have reported this too (but unanswered). Hoping for any solutions. :)
[Galaxy Tab S2 Android Development] lpedia:
On my T710 with LOS17, I often have to turn wifi off and back on again just after waking it from overnight sleep. It's stable after that, and speed seems fine. Battery life is OK, although not as stunningly good as it was with LOS 16. Once, a couple of weeks ago, there was a sudden large battery drain for no apparent reason, but it hasn't happened since. Charging speed is normal (similar to before installing LOS).
[Galaxy Tab S2 Android Development] lpedia:
Does it make any difference if you power it off while it's charging?
[Galaxy Tab S2 Android Development] aku47_:
No it's the same situation whether it's switched on or switched off. I also didn't add any fingerprints. I've switched back to stock rom for now and the charging is fine. ¯\_(ツ)_/¯
[Galaxy Tab S2 Android Development] yoshkapundrick:
Just did the 12/16 update on a t810 and now frozen on opening logo.
[Galaxy Tab S2 Android Development] wallace5golf:
That makes at least two! Stuck on logo and can't get to recovery.

Managed to put the tablet in Download Mode and have reflashed TWRP and restored a backup succesfully.
[Galaxy Tab S2 Android Development] Surfer_II:
Latest 12/17 builds (17.1) do not boot on T810 and T815.

After reboot from TWRP, Samsung Logo appears, then tablet shuts down.

Could only be reactivated by starting in download mode, then Vol down and immediate upload mode grip to get back to TWRP recovery (3.4.0.0) and reinstall the previous build.

It´s not related to Open GAPS (pico) package of 12/17. This could be installed with the previous build (11/02) without causing problems.
[Galaxy Tab S2 Android Development] krlTWR:
Same
[Galaxy Tab S2 Android Development] white09:
Installed lineage-17.1-20201217-UNOFFICIAL-gts210wifi.zip with opengapps171220202 pico.

Does not boot, pressing power button does nothing (not even samsung logo appears), but I can enter download mode via button combination. That is all I can do right now.
[Galaxy Tab S2 Android Development] shbayr:
Latest 12/18 builds (1600) do not boot on T-715.(latest full Gapps)

After reboot from TWRP, Samsung Logo appears, then stuck in bloader.

Could only be reactivated by starting in download mode, then Vol down and immediate upload mode grip to get back to TWRP recovery (3.4.0.0) and reinstall other builds.

Can someone point me where can find the previous build(16) 11 November ? was working fine (didn't made a backup)

20201111 build gte28ltexx

Thank you
[Galaxy Tab S2 Android Development] MrBlubke:
just wondering where did you see a 20201217 build of Los 17.1? or did you mean Los 16?

I can only seea new build for los 16 in the repository?
[Galaxy Tab S2 Android Development] jercar:
Same here with the latest 12/16 build of lineage 16 gts210wifi stuck on boot logo. Can boot into recovery and reload the last build I have on file that works for me which was the 20200331 file the 20200512 doesn't work get error message 7 in TWRP.
[Galaxy Tab S2 Android Development] d_brown92:
Installed lineage-17.1-20201102-UNOFFICIAL-gts28wifi.zip after struggling with the official builds that apparently don't support the 2015 model (SM-T710) despite being listed. Thanks for a working ROM.

2 Issues:

Wireless drops regularly. Seems like if it loses signal for a second it doesn't automatically reconnect. I have to pull down the settings pane and either toggle off/on or view networks and select SSID

Fingerprint reader works only occasionally. Setup had "PIN + Fingerprint" option, but settings only shows "Lock Screen -> PIN". Selected "Direct Unlock" option to get it to work at all. Seems to work best right after looking at the settings. Rarely works an hour later.
[Galaxy Tab S2 Android Development] lpedia:
Looks like the LOS 17.1 20201217 builds have been removed - I could see them two days ago, but they aren't there now.
[Galaxy Tab S2 Android Development] lpedia:
@d_brown92 I have much the same issues with lineage-17.1-20201102-UNOFFICIAL-gts28wifi.zip, which I installed several weeks ago. It's quite useable, basically stable apart from the occasional wifi dropouts and very unreliable fingerprint recognition.

In my case,

wifi dropout isn't frequent. If it occurs, it's just after unlocking the device (more common after overnight sleep). Turning wifi off and then back on fixes it. Doesn't usually drop out while it's being actively used.

Fingerprint worked once just after installing this ROM, and once more recently after I deleted /data/system/locksettings.db and /data/system/users/0/settings_fingerprint.xml as described in the 2017 thread https://xdaforums.com/t/guide-delete-fingerprint-profils-via-twrp.3686722/ (there was nothing in /data/system/users/0/fpdata), rebooted, and reset lock settings and fingerprints. FP worked first time after that - but not again. ☹

Before I did that, I was getting a blank screen and Settings hanging whenever I tried to go to Settings > Security > Fingerprint. Now I can still get to the fingerprint settings (but fp unlock isn't working).

I wasn't game to try the 1217 build, given the serious problems OPs were reporting. ☹
[Galaxy Tab S2 Android Development] ripee:
Changelog

Build 1220 for all variants

* Switched to new BSP sources and fixed booting.

* December security patch level.

* Synced with LineageOS sources.

Now that we have updated Pie sources, they will be used to bring up Q.
[Galaxy Tab S2 Android Development] bbortnick:
I tried to install lineage-16.0-20201219-UNOFFICIAL-gts28wifi on my T710 with a full wipe. Boot of the ROM stalled on the initial Samsung splash screen. It was difficult to get back into TWRP, but after many tries, I was able to. As others have reported, this is how: could only recover by starting in download mode, then Vol down and immediate upload mode grip to get back to TWRP recovery and reinstall an alternate ROM

So, I installed lineage-17.1-20201102-UNOFFICIAL-gts28wifi.zip instead. It installed fine, and seems to be generally working ok. Too bad it doesn't seem to be getting updated as often. I used twrp 3.1.0-1.

Bugs:

The know issue of no light on hardware capacitive buttons (buttons work, no light)

Settings app sometimes freezes when attempting update of fingerprint settings (However, I can usually unlock using fingerprint (I don't know if from deep sleep))

High battery drain (maybe?)

GPS not working

Working:

The mic seems to work ok

Rooted with Magisk

wifi ok

netflix ok

camera ok
[Galaxy Tab S2 Android Development] shbayr:
Awesome, Boot Fixed with the latest 16.0 Build(18122020) & Stock Gapps

Thank you for our effort
[Galaxy Tab S2 Android Development] ripee:
Thank you for your feedback about Q but it will not be relevant in the near future, as I am working on Q on top of the current working Pie sources. Once Q is as stable as Pie is now, I will change this thread back to 10.0 and stop releasing Pie builds.

This is also why I just removed the current 1102 Q builds: with Q builds available, too many users would complain about its bugs, when this build is still based on the previous less stable sources.
[Galaxy Tab S2 Android Development] bbortnick:
Thanks for your work Ripee - much apprecieated to keep our electronic devices out of the dump! I was wondering why this thread was still named 9, so I understand that, now.
[Galaxy Tab S2 Android Development] yoshkapundrick:
12/20 update of 9 worked perfectly on my 810. Thank you so much
[Galaxy Tab S2 Android Development] Schaagi:
Booting of my T810 now works, but GPS seems to have a problem. Thank you.
[Galaxy Tab S2 Android Development] retiredtab:
Confirmed that GPS doesn't work on SM-T710 running 16.0 Dec 20 build.

adb logcat says

12-22 22:08:23.749 3689 3703 D libgps : SendGpsExtensionMessage: Waiting for IPC connection - timeout
12-22 22:08:23.749 3689 3703 E libgps : LIBGPS: Cannot communicate (write) with a GPSD
12-22 22:08:23.749 3689 3703 E libgps : IPC Communication Error, ../../../../tmp/15113655_277211/allPartners/os/android/gps_interface/gpsi_client/GpsiClient.cpp:698 SendGpsExtensionMessage
12-22 22:08:23.749 3689 3703 D libgps : gps_set_position_mode: Waiting for IPC connection...
12-22 22:08:25.405 5310 5310 F linker : CANNOT LINK EXECUTABLE "/vendor/bin/gpsd": library "libshim_gpsd.so" not found
12-22 22:08:25.479 3689 3703 D libgps : gps_set_position_mode: Waiting for IPC connection - timeout
12-22 22:08:25.479 3689 3703 E libgps : LIBGPS: Cannot communicate (write) with a GPSD
12-22 22:08:25.479 3689 3703 E libgps : IPC Communication Error, ../../../../tmp/15113655_277211/allPartners/os/android/gps_interface/gpsi_client/GpsiClient.cpp:1567 gps_set_position_mode
12-22 22:08:25.479 3689 3703 E GnssLocationProvider: set_position_mode failed in startNavigating()
12-22 22:08:25.481 3689 3703 I GnssLocationProvider: WakeLock released by handleMessage(SET_REQUEST, 0, com.android.server.location.GnssLocationProvider$GpsRequest@5316d90)
[Galaxy Tab S2 Android Development] retiredtab:
Didn't mean to double post, xenforo glitched out.

12-22 22:08:25.405 5310 5310 F linker : CANNOT LINK EXECUTABLE "/vendor/bin/gpsd": library "libshim_gpsd.so" not found
[Galaxy Tab S2 Android Development] Vinczz:
17.1 rom was available a few weeks ago for T810, apparently it has been removed.

Were there problems with that rom ?

Are there any chances in the future to see OFFICIAL versions for T810 ?
[Galaxy Tab S2 Android Development] MrBlubke:
the answer is already here...
[Galaxy Tab S2 Android Development] ripee:
Thanks very much for this log, it helped identify an inconsistency in the GPS sources. I ran a new set of builds just in time for Christmas with a slight clerical change in the gpsd shim. This should help a little, or a lot, but if it's still unreliable, I will make a few more changes from trelte that ananjaser linked me.

For now, try build 1225 and have a Merry Christmas or whichever holiday you celebrate at the end of the year, if it hasn't passed already.
[Galaxy Tab S2 Android Development] Schaagi:
Hello Ripee

Thank you for the newest image for my T810. I have installed the 20201225 image, but unfortunately, the GPS does not work: This is an extract from Logcat:

>>CANNOT LINK EXECUTABLE "/vendor/bin/gpsd" : library "libshim_gpsd.so" not found

Regards and Happy Christmas :)

Schaagi
[Galaxy Tab S2 Android Development] retiredtab:
I'm quite certain you won't remember me back from July 2020 with this

https://review.msm8916.com/c/Galaxy-MSM8916/android_device_samsung_gt58wifi/+/1942

but, I have learned a lot on the last 6 months.

With the Dec 25 build, GPS is still not working.

#Let's look for libshim_gpsd.so
$adb root
$adb shell
cd /system

gts28wifi:/system # find | grep libshim

1|gts28wifi:/system #

# Nothing found above

# adb logcat

--------- beginning of system
12-25 11:27:11.319 I [3690/4274] ActivityManager START u0 {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.android.gpstest.osmdroid/com.android.gpstest.GpsTestActivity bnds=[1242,464][1480,756]} from uid 10023
12-25 11:27:11.393 I [3690/3707] ActivityManager Start proc 5335:com.android.gpstest.osmdroid/u0a77 for activity com.android.gpstest.osmdroid/com.android.gpstest.GpsTestActivity
12-25 11:27:11.756 D [5335/5335] GpsTestActivity Creating new GpsStatusFragment
12-25 11:27:11.903 I [3690/3953] GnssLocationProvider WakeLock acquired by sendMessage(SET_REQUEST, 0, com.android.server.location.GnssLocationProvider$GpsRequest@641fac8)
12-25 11:27:11.904 D [3690/3704] libgps SendGpsExtensionMessage: Waiting for IPC connection...
12-25 11:27:11.913 D [3401/3755] [MAGNETIC]Magnetic_Enable IN
12-25 11:27:11.931 D [3401/3755] Magnetic_Set_Delay IN [16000000]
12-25 11:27:11.945 D [3401/3755] Magnetic_Set_Delay IN [16000000]
12-25 11:27:11.957 D [3401/3755] SensorHAL RotationVector: set sampling frequency to 62.5Hz.
12-25 11:27:11.957 D [3401/3755] SensorHAL RotationVector: power-on.
12-25 11:27:13.614 D [3690/3704] libgps SendGpsExtensionMessage: Waiting for IPC connection - timeout
12-25 11:27:13.614 E [3690/3704] libgps LIBGPS: Cannot communicate (write) with a GPSD
12-25 11:27:13.614 E [3690/3704] libgps IPC Communication Error, ../../../../tmp/15113655_277211/allPartners/os/android/gps_interface/gpsi_client/GpsiClient.cpp:698 SendGpsExtensionMessage
12-25 11:27:13.614 D [3690/3704] libgps gps_set_position_mode: Waiting for IPC connection...
12-25 11:27:13.765 W [5372/5372] init type=1400 audit(0.0:823): avc: denied { execute_no_trans } for path="/system/vendor/bin/gpsd" dev="mmcblk0p19" ino=2512 scontext=u:r:init:s0 tcontext=u:object_r:vendor_file:s0 tclass=file
12-25 11:27:13.781 F [5372/5372] linker CANNOT LINK EXECUTABLE "/vendor/bin/gpsd": library "libshim_gpsd.so" not found
12-25 11:27:15.403 D [3690/3704] libgps gps_set_position_mode: Waiting for IPC connection - timeout
12-25 11:27:15.403 E [3690/3704] libgps LIBGPS: Cannot communicate (write) with a GPSD
12-25 11:27:15.403 E [3690/3704] libgps IPC Communication Error, ../../../../tmp/15113655_277211/allPartners/os/android/gps_interface/gpsi_client/GpsiClient.cpp:1567 gps_set_position_mode
12-25 11:27:15.403 E [3690/3704] GnssLocationProvider set_position_mode failed in startNavigating()
12-25 11:27:15.404 I [3690/3704] GnssLocationProvider WakeLock released by handleMessage(SET_REQUEST, 0, com.android.server.location.GnssLocationProvider$GpsRequest@641fac8)
[Galaxy Tab S2 Android Development] zeuzsvb:
Thanks for the hard work you put in.

Has anyone got stadia working om this rom?

I tried the 16 and 17 version, when i start a game it tries to connet but goes back to the games menu