[Galaxy Tab 8.9 General] martin707:
Like many of you I've been flashing roms on my 8.9 like hell. And just like any other n00b, we encounter issues most people in the community already solved and some still a mystery.

One particular issue is my clock not syncing whenever I turn on my device. It is like its going into deep sleep and when I turn it on, it gets delayed for about as long i turned it on. To make matters worse, even when the device is fully on, the clock pauses. It's a headache.

I cannot guarantee that this is the definite solution, but it may help someone here someday. First, let's make sure we have the same symptoms:

1) Clock is not sync or gets delayed as you leave it on.

2) You leave the tablet in sleep and turn in on and notice the clock is no longer sync.

3) If you reboot your device, it gets the clock correct without any adjustment needed.

4) Your timezone settings is correct, I live in the Philippines and we don't have daylight savings here so maybe you did something wrong. Double check your settings first.

If all of these 4 symptoms matches the issue in your device, then my solution may help. If not, then it might be hardware.

Moving on...

Just a brief background, I have already encountered this problem TWICE. Both instances involving me flashing a different kernel. I also have a habit of flashing roms and kernels with battery below 50%, which is definitely inadvisable. My first instance of the issue was when I flashed early builds of CyanogenMod 10, the bug was never resolved until I flashed a leaked version of the official Samsung ICS rom was available when I realized that the problem was fixed. The second instance was with my CyanogenMod 10.1 when after I was configuring my Xbox360 controller to my tablet. I was trying out kernels and reflashing my CM10.1 to revert the settings. Then I discovered that the clock was not in sync again.

My temporary solution was installing ClockSync app and Timezone fixer app which are both created by the same developer. I had to do the following settings:

Date & Time settings:

Automatic date & time: unchecked

Automatic time zone: unchecked

Set date: (specify the date)

Set time: (specify the time)

Select time zone: (specify time zone)

(the rest, just leave it as is).

Clock sync app:

Enable Automatic Synchronization: checked

Interval: 30 seconds (debug mode)

Override system setting: checked

UTC offset: (specify offset)

Time zone fixer:

Update your files, it will require a boot.

These settings are the same settings I had in both occasions. Clock sync became a battery hog, so this definitely wasn't the proper fix. However, the time zone fixer may have helped in a way. So I gave up and un-checked the Clock sync automatic synchronization. My clock was still not sync but I really didn't want to waste battery.

After a few days, just yesterday in fact, I encountered a battery calibration bug. I had to do the whole calibration steps. Somehow, draining the battery helped solve the issue. When I say drain, I mean completely drain from CWM until the tablet won't open.

The second instance assured me that the problem is definitely NOT hardware. Whatever it is, my symptoms can be fixed.

Just to be clear, I do not claim that draining your tablet's battery will solve this issue. But if you do have my symptoms, following my steps may help you just like it did with mine. Somewhere along the line, I may have did something right to fix it. My theory is with the Timezone fixer and battery drain.