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Linux - Laptop and Netbook Having a problem installing or configuring Linux on your laptop? Need help running Linux on your netbook? This forum is for you. This forum is for any topics relating to Linux and either traditional laptops or netbooks (such as the Asus EEE PC, Everex CloudBook or MSI Wind).

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Old 09-04-2003, 08:24 AM   #1
stardotstar
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Upgraded RH8 to 9 and Wierd Monitor Effect in text...


I find that the text - especially the black on white with small thin characters is blurred slightly like misregistration on paper with blue, yellow shadows sort of - hard to describe. Only happened after upgrading - the monitor is set as a Dell Laptop and is 1024x768 and the video card is detected and correct Radeon (I think!)

Anyone recognise this - maybe refresh rate or h/v sync or something - what should i try- I changed from millions to thousands of colours and other res's but no good - it either won't allow it or the problem is the same.

TIA
.*
 
Old 09-06-2003, 07:29 AM   #2
finegan
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Is it strictly text? It sounds like a font issue... Might want to change the fonts its using in /etc/X11/XF86Config... offhand I can't remember if RH is using a font server, if so you'll have to monkey with that things config file. I largely avoid that mess and just configure X by hand with X -configure. Try taking out truetype or 100dpi, or whatever, its going to be a guessing game regardless.

Luck,

Finegan
 
Old 09-06-2003, 09:21 PM   #3
Saraev
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I have this happen on my workstation from time to time, but mine's due to my monitor (CRT) being slightly goofy. I think it's convergence goes out of spec from time to time. However, never seen such things happen on a LCD. Is the machine in fact a Dell Laptop? My HP Laptop runs happy with RH9 and "Generic LCD 1024x768"

edit: Just now noticed this was in the Laptop forum. BLAST!

Last edited by Saraev; 09-06-2003 at 09:37 PM.
 
Old 09-07-2003, 08:28 AM   #4
stardotstar
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thanks finegan - yea it might be fonts - looks like a kooky monitor setting cause graphics are fine but sharp lines as in text are wierd - I will have a go at the font situ...

Thanks saraev - I will try Generic LCD! (yes dell laptop Latitude)
 
Old 09-08-2003, 05:25 AM   #5
stardotstar
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OK, I have tried generic 1024x768 LCD and no diff, I have also played iwht the antialiasing function - to no avail. I'm not sure where to configure the font resolution the monitor is 72 I am sure - I have been in Fonts of the ControlCentre nothing there.

Any suggestions where to look and how to approach>

TIA
*.
 
Old 09-09-2003, 11:55 AM   #6
sguercio
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Registered: Sep 2003
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I have the same issue with the following hardware:

Dell Precision 340
1702FP LCD monitor.
Nvidia Quadro 4 AGP
RedHat 9

This worked fine for me wirh 7.3. Now I get the crazy bleeding colors on my text. The rest looks great. I have tried everything I could to fix the problem. My temporary solution was to use the analog connection of the LCD rather than the Digitial. This made the color bleeding go away, but I would rather be using the DVI for all its other benefits. I am still in search of a permanent solution.
 
Old 09-11-2003, 04:42 PM   #7
sguercio
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This was brought to me by a coworker:

add the following to /etc/X11/Xresources

Xft.rgba: none


It worked for me.

~sjg
 
Old 09-12-2003, 01:58 AM   #8
stardotstar
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This is a fix for me!

Thank you - please can you explain what this exactly does?
 
Old 09-12-2003, 09:59 AM   #9
sguercio
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What this does is turns off the rgb subpixel rendering (hinting) option within the X font server itself.

Using subpixel rendering is supposed to make the fonts look sharper on an LCD, but for some reason (at least on my setup), the coloring gets all out of whack. I am not sure if it is because I am using a lower resolution that I notice it more (1280x1024) or what.

Here is an interesting page on subpixel rendering, gives the whole breakdown:

http://grc.com/ctwhat.htm

Hope this helps.

~sjg
 
  


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