I've connected a HDTV with HDMI on my Radeon 4670, using the open source ati driver. However there is "overscan" which cuts off a bit of each edge of the screen, about the size of the gnome-panel. How can I fix this so it displays the full resolution?
Display – How to Fix Overscan on HDMI HDTV
10.10display
Related Solutions
Try installing arandr ,in your system as it gives you gui , which is easy to mange
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In the outputs tab you can easily turnoff your laptop's display (LVDS) and keep your monitor's one (VGA or in your scenario it might be HDMI1) as your primary display and save the layout. Add the following layout script into your startup menu, so when next time you login to your desktop it works without any extra inconvenience.
Best Answer
The issue was with the TV, not Ubuntu.