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kendosperling

Member

From: Dresden

Registered: 2007-08-28

Posts: 49

using external crt with notebook -> resolution Problem

Hello,

I tried to setup an unused CRT Monitor to use at home with my laptop, which is a Fujitsu Siemens L7300. But i am not able to select another Resolution, than 1024x768. This one is used to be the standard resolution of my internal Display.

What i want to achiev is to plug in The CRT and use this one instead of the Laptoppanel. May be there is a problem with the openchrome driver i have to use.

I tried to set up things by editting xorg.conf but while setting a Resolution higher than 1024x768 there was only a part viewable on both screens.

Is there any suggestion what to try next?

blelump

Member

Registered: 2007-09-28

Posts: 13

Re: using external crt with notebook -> resolution Problem

tell us what kind of graphic card do you have.

kendosperling

Member

From: Dresden

Registered: 2007-08-28

Posts: 49

Re: using external crt with notebook -> resolution Problem

My Card is an internal Via PN800 there for i am using the openchrome driver.

MAC!EK

Member

Registered: 2005-09-27

Posts: 267

Re: using external crt with notebook -> resolution Problem

Check the xrandr tool (mayby your graphic card module supports it):
xrandr
and it should give you supported resolutions with refresh rates.

If that doesn't work try to input proper Vertical and Horizontal refresh rates into your xorg.conf:

# External LG CRT connected to VGA port
Section "Monitor"
        Identifier      "CRT"
        VendorName      "LG Electronics Inc."
        ModelName       "LG Flatron 775 FT"
# This is important
        HorizSync       30-70
        VertRefresh     50-160
#/ This is important
        DisplaySize     330 250
EndSection

values for your monitor you can find in CRT's manual.

Also be sure to that you have in Section "Screen" in SubSection "Display" that you have your proper CRT resolution:

Section "Screen"
        Identifier      "Samsung Screen"
        Device          "VGA"
        Monitor         "CRT"
        DefaultDepth    24      
        SubSection "Display"
                Depth           24
# This is important
                Modes           "1280x1024" "1024x768" "800x600" "640x480"
#/ This is important
                Virtual         2048 2048
        EndSubSection
EndSection

Then restart Xorg and check the resolution.

Last edited by MAC!EK (2007-11-20 14:53:27)

kendosperling

Member

From: Dresden

Registered: 2007-08-28

Posts: 49

Re: using external crt with notebook -> resolution Problem

thanks,

i already tried xrandr but there was only my internal panel displayed.
I will try to set refresh rates and report back.