[Galaxy Tab 10.1 Android Development] maximal2019user:
tried it without rooting file, still kills the tablet in sleep mode.

so , I think I am going to have to go back to the 2017 build, even without installing root, just the aosp-8.1-p4wifi-20181011.zip and open_gapps-arm-8.1-pico-20181222 .zip build , I noticed today when I think I had it in sleep mode , it would not power on by itself without first pluging in the usb to the computer port, in charging mode it was able to power on again, again I didn't have this bug or problem with the [ROM][Unofficial][AOSP] Android 7.1.2 Nougat build, that one worked without this problem, it doesn't die in sleep mode , or hard power off to the point, it wouldn't again power on without first getting the battery in charing mode, with the 8.1 build, I don't no why or whats causeing this problem with my Samsung galaxy 10.1 tab, model GT-P7510_XAB, again this tablet is only stable for me using the 7.1.2 build and older ones, this 8.1 build for some reason in sleep mode , hard powers off , and it will not turn the device back on with the button, unless its in charging mode, otherwise this old tablet acks like an paperweight without being able to turn it back on again etc.. only fix for this problem has been to put it into charging mode, in order to reboot it up again, otherwise without the usb cable it acks died in sleep of death mode or sleep mode with this build, aosp-8.1-p4wifi-20181011.zip , the other thing is I did turn on the encrypting android feature, but that also worked before without problems under aosp 7.1, I going to have to downgrade the OS system on it again, until this bug is fixed. on this tablet model model GT-P7510_XAB, wifi only Samsung galaxy tab 10.1 p4wifi device.

one thing I would like to say about twrp311-20180416-BIGSYS.zip is either I had used twrp version twrp3000-20160207-p4wifi.tar.md5 to update it to bigsys.zip but I also have the twrp311-20180416-BIGSYS.tar.md5, I noticed some problems install aosp 7.1 from twrp311-20171009-p4wifi.zip once it was downgraded to that one it seemed to freeze on installing aosp 7.1 2017 build, I had redo twrp3000-20160207-p4wifi.tar.md5 with Odin3_v3.13.1 , and then reformat the partitions before aosp 7.1 2017 builds would install fully it seemed like for some reason when using the zip version of twrp311-20171009 that the base system would lock up on installing like process bar with no progress pass the installing point, its an error that I noticed if its not installed from the md5 with odin for that one version that I seem to have installing problems, I don't no if any of this helps fix or explain what I may of done that caused aosp 8.1 to go into sleep of death on my device, I hope me trying to explain it more, helps get this process fixed for me, or updated installs again I don't no if the main problem with it has to do with aosp effecting the sleep mode of my device or if the problem is just related to 8.1 only, any help on this matter would be great :)

also installing open_gapps-arm-7.1-pico-20181222 crashes the set as new or copy your data, on the screen where is says Welcome to your GT-P7510 after reinstalling aosp-7.1-p4wifi-20171005, going to have to use P7500-open_gapps-arm-7.1-pico-20170416, and then upgrade the apps themselves afterwards, since with build 20181222 , it seems to crash the aosp 7.1 20171005 build on my device using any newer gapps for it from twrp installing process, that another problem that I have been having when doing an fresh clean install