I have noticed that display of blocky type in analyzer in amarok (default analyzer type) has gone blank for the past few days after some system updates. Not sure after which package update/install this has happened. Though remaining two types of display analyzer i.e. Balls & Disco work fine. Any suggestions as to what would have caused this?
Thanks a ton suskewiet for the super fast & apt response. And yes, your suggestion worked flawlessly. Thats very strange though. Apart from this glitch I did not any other graphics related issue after installing NVidia proprietary drivers.