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Old 10-02-2005, 12:33 PM   #1
Registered: Feb 2005
Location: Finland
Distribution: Debian testing
Posts: 38

Rep: Reputation: 15
Problems with Philips 170S LCD Screen

Hello, i recently got a new screen, a Philips 170S LCD, it runs pretty nice but it has some strange "waves" across the screen which makes the text blurry..

I have made a picture to show you what i mean:

Thats about what white text on black background looks like. It's not that bad as in the picture but it's easier to see what i mean.

This only occurs when i'm running X, in textmode it's perfect. So i guess something is wrong in my config-file.
Here are the intresting parts of my xorg.conf
Section "Monitor"

        Identifier      "Philips170S" 
        HorizSync       30-82 # Khz
        VertRefresh     56-76 # Hz

        # 1280x1024 @ 60.00 Hz (GTF) hsync: 63.60 kHz; pclk: 108.88 MHz
        Modeline "1280x1024_60.00"  108.88  1280 1360 1496 1712  1024 1025 1028 1060  -HSync +Vsync

Section "Screen"

        Identifier      "Screen"
        Device          "Geforce2"
        Monitor         "Philips170S"
        DefaultDepth    24
        Subsection "Display"
                Depth       24
                Modes "1280x1024_60.00"
                Virtual 0 0


Anyone got any suggestions?
Old 10-02-2005, 02:02 PM   #2
Registered: May 2005
Posts: 516

Rep: Reputation: 52
I have the identical monitor and those settings are correct. In fact, Ubuntu shows mine as a generic monitor at 60 hz and its fine. I always use 1078/768 though. You can try to turn up the refresh rates manually but not more than Philips suggests.

You should tell us what distro and what video card you use. It could be a video card problem.

BTW. Good choice in a monitor. I've been using mine for a year or more. NO pixel problems.
Old 10-02-2005, 02:57 PM   #3
Registered: Feb 2005
Location: Finland
Distribution: Debian testing
Posts: 38

Original Poster
Rep: Reputation: 15
Okey, im running Slackware 10.0, kernel 2.6.10.
My videocard is a "Nvidia Geforce MX4000 64Mb DDR".
Im using nvidia-drivers version 1.0.7.


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