Hi eliagp: I tried, it didn't work for me Nonetheless, I have an 'interesting' observation and (interim) solution. As long as I open up the virtual keyboard, the screen stops jittering. So for now, I have the matchbox-keyboard installed from the extras repository, wrote a one-row mini keyboard, and keep it opened on the bottom of the screen. Not very pretty and a little obstructive, but it works! My screen is at least stable now. Funny huh? I wonder what the keyboard got to do with jittering???