Hi fellas.
I?ve been thru the same problem last week. I found a solution at XDA Dev Forum (thanks user wd5gnr).
It really was a problem with the embedded clipboard application from Samsung.
The good news are that you just need to clean the clipboard cache existing at /data/clipboard and the problem disappear.
The bad news (for some people at least) are that you must get your device rooted to get access to /data/clipboard folder.
So that your decision: do a factory reset every time this problem comes up (there?s a workaround using the "Ice Cream Sandwich Keyboard Free", but I didn't tested) or get your device rooted. I've chosen the second one.
Let's get the hands on:
There are several ways to get Galaxy Tab rooted. I've followed this tutorial
Root Samsung Galaxy Tab 2 (10.1 inch display) Model Numbers GT-P5100, GT-P5110 and GT-P5113, it worked like a charm for mine GT-P5100.
Provided that your device is already rooted, you just need open your favorite file manager (I used ES Explorer), mount/get root RW access to your file system, navigate to the folder /data/clipboard, clear the content of this folder (you can perform backup of this data to another location prior deleting if you are afraid of lose some useful information) and reboot your device. Your keyboard should be working once again.
Mr. wd5gnr also suggests that you change the /data/clipboard folder permissions to prevent this problem to happen again.
For doing this download and install on your rooted device the Terminal Emulator (available at Play Store
https://forums.androidcentral.com/e...d=jackpal.androidterm&hl=pt_BR&token=t63Xc7bR) then open it and enter the command lines as bellow:
su
chmod 775 /data/clipboard
chown system.system /data/clipboard
And reboot again.
Finished.
Regards.