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Old 11-01-2009, 05:55 AM   #1
Registered: Mar 2005
Posts: 284

Rep: Reputation: 33
[SOLVED] Monitor blanks out when accessing Display Properties in KDE

Hello Gentoo forum,

I am running Gentoo and KDE 4.3.1 and using the latest Nvidia display driver which was downloaded directly from Nvidia's web site.

Everything boots up fine and KDE starts with no problem with the proper display resolution.

But everytime I click on System Settings - Display Settings - Size and Orientation, my monitor blanks and the monitor gives a message saying the monitor is out of range. I can not kill X so I am forced to give the computer a cold reboot. I can access the Nvidia control panel with no problem. If I enter KDE as a root user, the problem goes away.

Below is a copy of my xorg.conf:

# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:  version 1.0  (buildmeister@builder63)  Tue Oct 20 21:00:15 PDT 2009

Section "ServerLayout"
    Identifier     " Configured"
    Screen      0   "Screen0" 0 0
    InputDevice    "Mouse0" "CorePointer"
    InputDevice    "Keyboard0" "CoreKeyboard"

Section "Files"
    ModulePath      "/usr/lib/xorg/modules"
    FontPath        "/usr/share/fonts/misc/"
    FontPath        "/usr/share/fonts/TTF/"
    FontPath        "/usr/share/fonts/OTF"
    FontPath        "/usr/share/fonts/Type1/"
    FontPath        "/usr/share/fonts/100dpi/"
    FontPath        "/usr/share/fonts/75dpi/"

Section "Module"
    Load           "extmod"
    Load           "dri2"
    Load           "record"
    Load           "dbe"
    Load           "glx"

Section "InputDevice"
    Identifier     "Keyboard0"
    Driver         "kbd"

Section "InputDevice"
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/input/mice"
    Option         "ZAxisMapping" "4 5 6 7"

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Monitor Vendor"
    ModelName      "Monitor Model"
   HorizSync       30.0 - 83.0
   VertRefresh     56.0 - 75.0

Section "Device"

        ### Available Driver options are:-
        ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
        ### <string>: "String", <freq>: "<f> Hz/kHz/MHz"
        ### [arg]: arg optional
        #Option     "SWcursor"           	# [<bool>]
        #Option     "HWcursor"           	# [<bool>]
        #Option     "NoAccel"            	# [<bool>]
        #Option     "ShadowFB"           	# [<bool>]
        #Option     "UseFBDev"           	# [<bool>]
        #Option     "Rotate"             	# [<str>]
        #Option     "VideoKey"           	# <i>
        #Option     "FlatPanel"          	# [<bool>]
        #Option     "FPDither"           	# [<bool>]
        #Option     "CrtcNumber"         	# <i>
        #Option     "FPScale"            	# [<bool>]
        #Option     "FPTweak"            	# <i>
        #Option     "DualHead"           	# [<bool>]
    Identifier     "Card0"
    Driver         "nvidia"
    VendorName     "unknown"
    BoardName      "unknown"

Section "Screen"
    Identifier     "Screen0"
    Device         "Card0"
    Monitor        "Monitor0"
    DefaultDepth    24
    SubSection     "Display"
        Viewport    0 0
        Depth       1
    SubSection     "Display"
        Viewport    0 0
        Depth       4
    SubSection     "Display"
        Viewport    0 0
        Depth       8
    SubSection     "Display"
        Viewport    0 0
        Depth       15
    SubSection     "Display"
        Viewport    0 0
        Depth       16
    SubSection     "Display"
        Viewport    0 0
        Depth       24
I would be greatful if you can help me correct this issue.

All the best,


Last edited by rrrssssss; 11-01-2009 at 12:13 PM.
Old 11-01-2009, 12:19 PM   #2
Registered: Mar 2005
Posts: 284

Original Poster
Rep: Reputation: 33
Hello again Gentoo forum,

I am happy to announce I solved my problem by editing one of the hidden files called .kde4 then I navigated to the the share folder, then the config folder, then the krandrc file. That file had my monitor resolution too low and the refresh rate too high.

I got the correct information by copying the krandrc file while I was booted up in KDE as root since I did not have the problem in root.

I also think the reason the information was wrong was because when I first installed KDE I used a generic vesa driver and the information in the krandrc file was probably from that vesa driver. So when I installed the Nvidia driver, the information remained the same in the krandrc file, causing the problem.


Last edited by rrrssssss; 11-01-2009 at 12:43 PM. Reason: clarity


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