http://nixnote.blogspot.co.uk/2012/06/a ... rscan.html
in a Konsole or terminal type
su
(Enter your root password at the prompt)
- Code: Select all
amdconfig --set-pcs-val=MCIL,DigitalHDTVDefaultUnderscan,0
Then press [Control] D or type exit
reboot your machine and underscan should be gone