Re: nVIDIA and SuSE 9.3 - Resolution Problem

From: Joost van der Waa (Joost.vander.waa_at_whipethishccnet.nl)
Date: 08/09/05 

Date: Tue, 09 Aug 2005 22:27:00 +0200

udo wrote:
>>Why bother about higher frequencies for your LCD-monitor? The reason why
>>conventional CRT-monitors need higher frequencies is the fact that the
>>image is redrawn every time, depending on the Vertical frequency (in
>>your case 60 Hz (not kHz). Our eyes will see that refresh rate as a
>>flickering. If you increase the refresh rate to 70Hz, you won't see the
>>flickering because our eyes are not fast enough.
>>For TFT/LCD screens this refresh rate is not important, because the
>>pixels usually don't really dim in between the refresh-rate. That is
>>typically the reaon why you don't need higher refresh rates on these
>>monitors. This also explains why a lot of LCD-monitors don't support
>>higher refresh-rates: you just don't need them. Btw, those higher
>>refresh-rates are also more expensive.
>>The only real interesting value which might be important is the reaction
>>time of the screen, but only if you are playing games. If you have a
>>screen with let's say a reaction time of 25 ms (milliseconds), you might
>>see some ghosting effects in fast movements. But, if you only use it for
>>internet, wordprocessing and graphical editing, it is of no real importance.
>
>
> The raction time is 8ms but when you are a programmer and look more
> than about 4-5 h on a flickering monitor....for me its not
> satisfactory. This is my first experience with lcd monitors and I
> thougt why I can'r change this values. If so..no problem. But what
> about the flickering and the diffuse letters ? maybe I don't know if
> this is subjective to me..
>
>
>
>>So, be glad with your screen, just accept the values as given by Yast
>>etc. and enjoy Linux!
>
> Yes but YAST has not my monitor only the 'vesa - 1024x768@60 Hz' I try
> to change to 70 Hz and I get 'out of range' an nothing works..;-
>
> Udo
>
Hi Udo,

I'm working on a 60Hz LCD monitor too, and it just doesn't flicker at
all. Technically speaking it's virtually impossible that you would be
seeing flickering on a LCD-monitor (as I explained above)
The out of range message you get is just your monitor saying to you:
"Hey, I don't support higher frequencies!" This has nothing to do with
Yast, Linux or any other OS you will be using (yes, XP too). It's a
physical limitation of your monitor. Btw, a reaction time of 8 ms is
very good, so you probably have a very good monitor.

Joost