HDMI Overscan / Underscan

[Dygaer]

Currently the screen clips off edges of the console. Is there a way that I can change the over scan setting in the /boot/uEnv.txt file? The Raspberry Pi has something like this with their /boot/config.txt file using the following settings.

These are the one's that I would be interested in using with the uEnv.txt file.

• DISABLE_OVERSCAN
  Set to 1 to disable overscan.
  
• OVERSCAN_LEFT
  Specifies the number of pixels to skip on the left edge of the screen. Increase this value if the text flows off the left edge of the screen; decrease it if there's a black border between the left edge of the screen and the text.
  
• OVERSCAN_RIGHT
  Specifies the number of pixels to skip on the right edge of the screen.
  
• OVERSCAN_TOP
  Specifies the number of pixels to skip on the top edge of the screen.
  
• OVERSCAN_BOTTOM
  Specifies the number of pixels to skip on the bottom edge of the screen.
  
• FRAMEBUFFER_WIDTH
  Specifies the console framebuffer width in pixels. The default is the display width minus the total horizontal overscan.
  

[dhardingham]

It is also possible to change the overscan settings on-the-fly when using a Raspberry PI. There is a small C program that writes directly to the VideoCore GPU, to control the overscan settings - https://github.com/ukscone/set_overscan

This is what we need for the PINE64.