Can not change screen resolution (Fedora 5, gnome)

Kam Leo kam.leo at gmail.com
Sat Jul 29 03:11:18 UTC 2006


On 7/28/06, Haluk Tunali <haluk.fedora at tunali.org> wrote:
> Hi all,
>
> It seems like I am not able to change my x server screen resolution from
> the default to anything higher than that (I want 1280x1024 with (16 or
> 24 bit color depth). I have just freshly installed fedora 5 and running
> gnome window manager. I have tried changing the resolution with
> System->Administration->Display (the resolution and color depth options
> that I want, are listed in the drop-down box), it prompts me to
> logoff-logon, I exit the x server and start x again and see the same
> resolution (same with restart). I also tried editing xorg.conf file
> myself with no luck.
>
> My xorg.conf file content is below. Fedora seems to recognize my monitor
> and graphics card correctly (at least their names are correct in
> xorg.conf).
>
> I will greatly appreciate any help.
>
> Thanks,
>
> # Xorg configuration created by system-config-display
>
> Section "ServerLayout"
>         Identifier     "single head configuration"
>         Screen      0  "Screen0" 0 0
>         InputDevice    "Mouse0" "CorePointer"
>         InputDevice    "Keyboard0" "CoreKeyboard"
> EndSection
>
> Section "Files"
>
> # Multiple FontPath entries are allowed (they are concatenated together)
> # By default, a font server independent of the X server is
> # used to render fonts.
>         FontPath     "unix/:7100"
> EndSection
>
> Section "Module"
>         Load  "dbe"
>         Load  "extmod"
>         Load  "fbdevhw"
>         Load  "glx"
>         Load  "record"
>         Load  "freetype"
>         Load  "type1"
>         Load  "dri"
> EndSection
>
> Section "InputDevice"
>
> # Specify which keyboard LEDs can be user-controlled (eg, with xset(1))
> #       Option  "Xleds"         "1 2 3"
> # To disable the XKEYBOARD extension, uncomment XkbDisable.
> #       Option  "XkbDisable"
> # To customise the XKB settings to suit your keyboard, modify the
> # lines below (which are the defaults).  For example, for a non-U.S.
> # keyboard, you will probably want to use:
> #       Option  "XkbModel"      "pc102"
> # If you have a US Microsoft Natural keyboard, you can use:
> #       Option  "XkbModel"      "microsoft"
> #
> # Then to change the language, change the Layout setting.
> # For example, a german layout can be obtained with:
> #       Option  "XkbLayout"     "de"
> # or:
> #       Option  "XkbLayout"     "de"
> #       Option  "XkbVariant"    "nodeadkeys"
> #
> # If you'd like to switch the positions of your capslock and
> # control keys, use:
> #       Option  "XkbOptions"    "ctrl:swapcaps"
> # Or if you just want both to be control, use:
> #       Option  "XkbOptions"    "ctrl:nocaps"
> #
>         Identifier  "Keyboard0"
>         Driver      "kbd"
>         Option      "XkbModel" "pc105"
>         Option      "XkbLayout" "us"
> EndSection
>
> Section "InputDevice"
>         Identifier  "Mouse0"
>         Driver      "mouse"
>         Option      "Protocol" "IMPS/2"
>         Option      "Device" "/dev/input/mice"
>         Option      "ZAxisMapping" "4 5"
>         Option      "Emulate3Buttons" "yes"
> EndSection
>
> Section "Monitor"
>         Identifier   "Monitor0"
>         VendorName   "Monitor Vendor"
>         ModelName    "Dell 1704FPV (Digital)"
>         DisplaySize  340        270
>  ### Comment all HorizSync and VertSync values to use DDC:
>         HorizSync    30.0 - 81.0
>         VertRefresh  56.0 - 76.0
>         Option      "dpms"
> EndSection
>
> Section "Device"
>         Identifier  "Videocard0"
>         Driver      "radeon"
>         VendorName  "Videocard vendor"
>         BoardName   "ATI Technologies Inc R430 [Radeon X800 XL] (PCIe)"
> EndSection
>
> Section "Screen"
>         Identifier "Screen0"
>         Device     "Videocard0"
>         Monitor    "Monitor0"
>         DefaultDepth     16
>         SubSection "Display"
>                 Viewport   0 0
>                 Depth     16
>                 Modes    "1024x768" "800x600" "640x480"
>         EndSubSection
> EndSection
>
> Section "DRI"
>         Group        0
>         Mode         0666
> EndSection
>
>

1) You're missing a section like the following for my monitor:

Section "Screen"
        Identifier "Screen0"
        Device     "Videocard0"
        Monitor    "Monitor0"
        DefaultDepth     24
        SubSection "Display"
                Viewport   0 0
                Depth     16
                Modes    "800x600" "640x480"
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     24
                Modes    "1024x768" "800x600" "640x480"
        EndSubSection
EndSection

2) Your monitor cannot go higher than 1024x768.

If it is case 1) then use /usr/bin/system-config-display and configure
your monitor for 24-bit color.




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