RPi, TV and Overscan

I have some problems with my TV and the RPi running RISC OS. The problem is that there is a lot of overscan – so I can barely see the icons on the icon bar. What I have tried is editing the config.txt file with no avail. Even though I can get the picture to fit on my screen, it seems that RISC OS knows nothing about this resizing. I have to click the mouse not ON the icon, but where the icon would be if disable_overscan is set to 1. In essence, I have to move the pointer 20 pixels to the bottom left of the position where I expect the click to happen.

I’m using a TV running at 1920×1080 on an HDTV.

Had the same problem with my HDTV using the HDMI output. As a workaround I just changed my TV’s display setting, as changing the display settings in ROS did not give me a result I was happy with.

Great! I found a setting on my TV which effectively switches off overscan, and it works as expected now.

The other problem I’ve found with TVs is that they tend to have picture sharpening turned on. This has the effect of un-antialiasing the fonts, making them look awful :-(

All TVs are thrown out of the factory with far too much blue in the picture, sharpening turned up and who knows what else. It’s a good idea to calibrate your TV’s settings. I used a BluRay disc called HD Basics to guide me. I got a far better picture at the end of the process.