White shadow around text on HDTV with HDMI
I have a new Gaba GLV 2403 FullHd Led Television and when I connect my PC to it using the VGA port it works fine. But when I connect my laptop to the television, I see white shadow around the characters. I tried some gamma-light-contrast-acuity combination, but it didn't help.
I checked the HDMI connection to the TV, and it appears to be good.
Here is an image:
In the top image you can see my laptop display, and in the bottom image is the display on the LEDTV.
How can I solve this?
This is clearly caused by the "sharpen" setting on your TV.
Most TVs come with the sharpening turned up too high. I suspect it is because people expect HD to look crisp and they all want to be the most crisp image on the store shelf.
There ought to be a menu on your tv that allows you to reduce the sharpening to a more acceptable level.
In addition, if you are using this for gaming etc, you might want to turn off all post-processing effects (like mpeg artifact reduction, dark enhancement etc.) as these can/will cause frame delay, which is undesirable when paired with real-time input (like gamepads, keyboards etc).
As @technocore mentions in a comment, some TVs will store these settings based on the TV input so you can have a setting for your laptop and one for your TV decoder.
Some TVs have no sharpening adjustments, in which case you may be out of luck.
I took a screen capture of a google image search for the phrase "over sharpening TV":
I finally found the solution on the following link, which worked for me.
The tip is to name the source to "PC" on the screen's source settings. The screen uses different settings depending on what it thinks the source is.