ghost fonts/images

[KevinO]

These really are ghosts, in the sense that they are caused in a similar way to 
the ones you see on a TV screen. The signals are 'bouncing' off the wiring in 
your system, instead of nearby buildings. Turning down your refresh rate 
should help to make them less obvious.

The impedance of the transmission line(s) that are carrying the video signal 
from the chipset on the video card to the guts of your monitor do not have a 
constant characteristic impedance. This causes reflections which leads to your 
monitor 'seeing' the same signal more than once. Using a lower sweep rate 
brings these 'ghost' images closer together on the screen. Using better 
monitors, cards and cables helps prevent them in the first place.

The worst examples I've seen were on computers with el-cheapo(tm) on board 
video built into the motherboard.

KevinO

Matt wrote:
> I'm using SuSE Personal 7.3 (I'll explain this to you off list, Kevin) 
> and it has "ghosts" like some local TV channels - a distortion of 
> something that is there that follows immediately after it. Like after 
> that last "t" in the last sentence, there is a faint "t" immediately 
> following it, along with every other last letter of a word, every 
> window, every everything in KDE and Gnome.  I guess the ghosts can be 
> best described as looking like they're carved into the empty space. It's 
> not noticeable from a few feet away, but up close it is very annoying, 
> and looks very horrible. Is this making sense to anyone? If so, can you 
> help me?
> 
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-- 
Kevin O'Connor

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