Problem with Control-Center

**Suoremacy** · 11-13-2003, 05:50 PM

Hi everyone.

I got a problem to access the Control-Center.....
I want to change my Screen resolution from 640x480 to something like 1240x1024.....

I go to the Controll-Center then Connected Devices -> Screen and Display Devices
and then a loading progress starts but nothing happens then...
i get no configuration GUI for Screen and Display Devices and after a while even the loading progress disapears from the taskbar

can someone help me ???

thank you very much

**arkaine23** · 11-13-2003, 07:37 PM

Press

Ctrl + Alt + the "+" on the number pad

That'll siwtch between 1024x768, 800x600, and 640x480

If you want 1280x1024 when booting from cd, use the cheatcode:

knoppix screen=1280x1024

**Suoremacy** · 11-13-2003, 08:25 PM

i have installed it on my HD
and i created a bootdisk for running it...
can i type the knoppix screen=1280x1024 command when i boot from that disk ?

btw: If i press Ctrl + Alt + the "+" on the number pad its only some strange kind of zoom, and i don't see the whole screen :/

but i gonna try your advice the knoppix screen=1280x1024

and later i gonna report what happens.
thx

**CrashedAgain** · 11-14-2003, 05:44 AM

???My Control Centre doesnt' have 'Connected Devices'. but monitor & screen settings are under peripherals->Xdisplay.

**Suoremacy** · 11-14-2003, 02:59 PM

yeah sorry about that....
i have the german version installed.
can u plz help me changing my resolution....
arkaine23's hint doesn't work for me

**Stephen** · 11-14-2003, 09:45 PM

Originally Posted by Suoremacy

yeah sorry about that....
i have the german version installed.
can u plz help me changing my resolution....
arkaine23's hint doesn't work for me

Have you tried to edit the file /etc/X11/XF86Config-4 by hand you should see a section similar to this:

Code:

Section "Screen"
        Identifier "Screen0"
        Device     "Card0"
        Monitor    "Monitor0"
        DefaultDepth  24
#        SubSection "Display"
#               Depth     1
#       EndSubSection
#       SubSection "Display"
#               Depth     4
#       EndSubSection
#       SubSection "Display"
#               Depth     8
#       EndSubSection
#       SubSection "Display"
#               Depth     15
#       EndSubSection
#       SubSection "Display"
#               Depth     16
#       EndSubSection
        SubSection "Display"
                Depth     24
                Modes     "1152x768" "1024x768" "800x600" "640x480"
#       ViewPort  0 0
        EndSubSection
EndSection

Xfree will you the highest resolution possible in the subsection Display as long as the card and monitor timings will support it the DefaultDepth setting is the one that will be used. In this example it would use the 1152x768 if supported. You should have you monitor correctly set in the Monitor section similar to this:

Code:

# Acer AcerView 54e
Section "Monitor"
        #DisplaySize      270   200     # mm
        Identifier   "Monitor0"
        VendorName   "API"
        ModelName    "4536"
        HorizSync       30-54
        VertRefresh     50-120
        Option      "DPMS"
EndSection

You need the proper settings for the HorizSync and VertRefresh for your monitor to have the X system to get the best possible screen resolution. Before making any changes to the XF86Config-4 file you should back it up first so you have a known working copy you can go back to.