on my graphics card . I had that issue when I used an HDMI cable with Linux. I went into Additional Drivers
and found ATI Radeon Drivers , downloaded them and re-sized the screen. Hope this helps...Digger
40" Samsung LED TV model LN4042HX/xaa...the picture is too large for the screen. Is there a setting I am over looking and if so where and how do I find it a reset it?