https://bugzilla.kernel.org/show_bug.cgi?id=20142


Alex Deucher <alexdeuc...@gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |alexdeuc...@gmail.com




--- Comment #2 from Alex Deucher <alexdeuc...@gmail.com>  2010-10-12 15:10:14 
---
Unfortunately, there's no way for the driver to know whether the TV has
overscan enabled or not or if the TV is in some special scaling mode enabled. 
Lots of TV's have no option to disable overscan.  As such, the driver
underscans the image to compensate for the overscan; this is limited to the
common HD modes.  Unfortunately, there's no good answer.  Before I added
underscan support to the driver, I got bug reports from people with TV's where
the image was cut off on the edges due to the TV overscanning.  You can disable
underscan in the driver with:
xrandr --output <output> --set underscan off

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