[mythtv-users] Correcting/Adjusting Overscan In X.org/MythTV

[Ben Giddings]

Thanks for the detailed post.  I have one bit to add for nvidia users: 
the nvidia-settings tool:

Aran Cox wrote:
> 3a) Driver Options
> The nVidia corp. binary driver for Linux has an Overscan option called
> TVOverScan.  My understanding is this increases the amount of overscan
> but cannot be used to decrease it.  It also seems only work on
> Composite and S/Video outputs with supported cards, not every nVidia
> based card.  It may also be possible to adjust overscan with the
> nvidia-settings tool included with the binary driver.

The nvidia-settings tool not only allows you to adjust overscan, but the 
range of overscan options is much greater than the xorg.conf setting. 
Changing only the xorg.conf setting I wasn't able to get any true 
overscan, I was only able to reduce the size of the black borders. 
Using the nvidia-settings tool I was able to make the output of Myth 
closely resemble normal TV viewing: the picture went to the edges of the 
screen, no black border at all.

The drawbacks of using the nvidia-settings tool to control overscan is 
that the settings don't always stay.  Many full-screen games (not xmame, 
but say tuxracer) will do something that overrides the settings.  As a 
result, you have to somehow re-apply the nvidia-settings settings.  This 
doesn't always work well, and I haven't found a way to do it without the 
use of a keyboard.

Ben