[Galaxy Tab S Q&A, Help & Troubleshooting] dgmorland:
I think my tablet is suffering from a hardware fault. It is often freezing for a few seconds and sometimes up to a few minutes, many different applications including Google Play Services stop responding and sometimes it reboots itself. I have tried full wipes and reinstalling ROM (both stock and various custom ROMs) but it doesn't fix the problem. For a period of a couple of weeks it seemed to be ok but now it is constantly freezing again and then various different apps crash. Since it happens on multiple ROMs and many different apps crash I suspect its a hardware fault (maybe RAM failing). Has anyone else had a problem like this?

This is typical of what I see in logs

--------- beginning of crash
E/AndroidRuntime(21391): FATAL EXCEPTION: AsyncTask #3
E/AndroidRuntime(21391): Process: com.android.connectivity.metrics, PID: 21391
E/AndroidRuntime(21391): java.lang.RuntimeException: An error occurred while executing doInBackground()
E/AndroidRuntime(21391): at android.os.AsyncTask$3.done(AsyncTask.java:325)
E/AndroidRuntime(21391): at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354)
E/AndroidRuntime(21391): at java.util.concurrent.FutureTask.setException(FutureTask.java:223)
E/AndroidRuntime(21391): at java.util.concurrent.FutureTask.run(FutureTask.java:242)
E/AndroidRuntime(21391): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:243)
E/AndroidRuntime(21391): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
E/AndroidRuntime(21391): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
E/AndroidRuntime(21391): at java.lang.Thread.run(Thread.java:761)
E/AndroidRuntime(21391): Caused by: java.lang.IllegalArgumentException: bad base-64
E/AndroidRuntime(21391): at android.util.Base64.decode(Base64.java:161)
E/AndroidRuntime(21391): at android.util.Base64.decode(Base64.java:136)
E/AndroidRuntime(21391): at android.util.Base64.decode(Base64.java:118)
E/AndroidRuntime(21391): at com.android.connectivity.metrics.WiFiJobService.takeSnapshot(WiFiJobService.java:52)
E/AndroidRuntime(21391): at com.android.connectivity.metrics.SnapshotJobService$Task.doInBackground(SnapshotJobService.java:80)
E/AndroidRuntime(21391): at com.android.connectivity.metrics.SnapshotJobService$Task.doInBackground(SnapshotJobService.java:63)
E/AndroidRuntime(21391): at android.os.AsyncTask$2.call(AsyncTask.java:305)
E/AndroidRuntime(21391): at java.util.concurrent.FutureTask.run(FutureTask.java:237)
E/AndroidRuntime(21391): ... 4 more
F/libc ( 2469): Fatal signal 6 (SIGABRT), code -6 in tid 27367 (gpsd)
F/libc ( 2469): failed to resend signal during crash: Operation not permitted
F/libc (27988): Fatal signal 6 (SIGABRT), code -6 in tid 19155 (gpsd)
F/libc (27988): failed to resend signal during crash: Operation not permitted
F/libc (19608): Fatal signal 6 (SIGABRT), code -6 in tid 26538 (gpsd)
F/libc (19608): failed to resend signal during crash: Operation not permitted
F/libc (27078): Fatal signal 6 (SIGABRT), code -6 in tid 28166 (gpsd)
F/libc (27078): failed to resend signal during crash: Operation not permitted
F/libc (31413): Fatal signal 6 (SIGABRT), code -6 in tid 13581 (gpsd)
F/libc (31413): failed to resend signal during crash: Operation not permitted
F/libc (15291): Fatal signal 6 (SIGABRT), code -6 in tid 18678 (gpsd)
F/libc (15291): failed to resend signal during crash: Operation not permitted
F/libc (20977): Fatal signal 6 (SIGABRT), code -6 in tid 6160 (gpsd)
F/libc (20977): failed to resend signal during crash: Operation not permitted
E/AndroidRuntime( 7359): FATAL EXCEPTION: main
E/AndroidRuntime( 7359): Process: com.google.android.apps.magazines, PID: 7359
E/AndroidRuntime( 7359): DeadSystemException: The system died; earlier logs will point to the root cause
E/AndroidRuntime( 9762): FATAL EXCEPTION: main
E/AndroidRuntime( 9762): Process: com.google.android.gms.persistent, PID: 9762
E/AndroidRuntime( 9762): DeadSystemException: The system died; earlier logs will point to the root cause
E/AndroidRuntime( 5006): FATAL EXCEPTION: AsyncTask #277
E/AndroidRuntime( 5006): Process: me.twrp.twrpapp, PID: 5006
E/AndroidRuntime( 5006): DeadSystemException: The system died; earlier logs will point to the root cause
E/AndroidRuntime( 3717): FATAL EXCEPTION: main
E/AndroidRuntime( 3717): Process: com.android.vending, PID: 3717
E/AndroidRuntime( 3717): DeadSystemException: The system died; earlier logs will point to the root cause
E/AndroidRuntime(28431): FATAL EXCEPTION: main
E/AndroidRuntime(28431): Process: com.google.android.keep, PID: 28431
E/AndroidRuntime(28431): DeadSystemException: The system died; earlier logs will point to the root cause
E/AndroidRuntime(23932): FATAL EXCEPTION: main
E/AndroidRuntime(23932): Process: com.google.android.apps.maps, PID: 23932
E/AndroidRuntime(23932): DeadSystemException: The system died; earlier logs will point to the root cause
E/AndroidRuntime( 3681): FATAL EXCEPTION: [bwl] processing com.google.android.gms.herrevad.services.BackgroundObservationIntentOperation for action com.google.android.gms.herrevad.services.BACKGROUND_OBSERVATION
E/AndroidRuntime( 3681): Process: com.google.android.gms, PID: 3681
E/AndroidRuntime( 3681): DeadSystemException: The system died; earlier logs will point to the root cause
F/libc ( 9857): Fatal signal 6 (SIGABRT), code -6 in tid 19574 (gpsd)
F/libc ( 9857): failed to resend signal during crash: Operation not permitted