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#1 2008-12-01 04:27:23

mntester
Member
Registered: 2007-12-09
Posts: 13

help with configuring xorg.conf to increase resolution

Yesterday I upgraded to a Samsung 23" widescreen monitor (2343 WBX) that says the optimal resolution for it is 2048x1158 @60Hz. I have a EVGA 6200 card that supports the following resolutuions (from the spec in manual)
                          8bit          16 bit      32 bit
...
1600 x 1200       120Hz      120Hz      100Hz
1920 x 1080       100Hz      100Hz      85Hz
1920 x 1200       100Hz      100Hz      85Hz
1920 x 1440       85Hz        85Hz        75Hz
2048 x 1536       75Hz        75Hz        60Hz

I tried to increase the resolution by adding the following to the Screen section

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "TwinView" "0"
    Option         "metamodes" "1920x1440 +0+0"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

But it doesn't work saying unable to validate modes for 1920x1440 and falls back to nvidia-auto-select and the maximum resolution is always 1680 x 1050. Part of the output of Xorg.0.log is attached below. Can someone please help me with how to set up the xorg.conf in this case?

Thanks in advance.

(**) NVIDIA(0): Depth 24, (--) framebuffer bpp 32
(==) NVIDIA(0): RGB weight 888
(==) NVIDIA(0): Default visual is TrueColor
(==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
(**) NVIDIA(0): Option "NoDDC" "true"
(**) NVIDIA(0): Option "TwinView" "0"
(**) NVIDIA(0): Option "MetaModes" "1920x1440 +0+0"
(**) NVIDIA(0): Option "UseEdidDpi" "false"
(**) NVIDIA(0): Option "DPI" "96 x 96"
(**) NVIDIA(0): Enabling RENDER acceleration
(WW) NVIDIA(0): 
(WW) NVIDIA(0): The IgnoreEDID and NoDDC options have been deprecated.  The
(WW) NVIDIA(0):     NVIDIA X driver makes use of a display device's EDID
(WW) NVIDIA(0):     during construction of its modePool.  It is recommended
(WW) NVIDIA(0):     that you allow the X driver to make use of any available
(WW) NVIDIA(0):     EDID.  If, however, you know what you are doing and have
(WW) NVIDIA(0):     good reason to do so, you can disable the X driver's use
(WW) NVIDIA(0):     of EDIDs by setting the "UseEDID" X configuration option
(WW) NVIDIA(0):     to FALSE; e.g.,
(WW) NVIDIA(0): 
(WW) NVIDIA(0):   Option "UseEDID" "FALSE"
(WW) NVIDIA(0): 
(WW) NVIDIA(0): Note that, rather than globally disable all uses of the EDID,
(WW) NVIDIA(0):     you can individually disable each particular use of the
(WW) NVIDIA(0):     EDID; e.g.,
(WW) NVIDIA(0): 
(WW) NVIDIA(0):   Option "UseEDIDFreqs" "FALSE"
(WW) NVIDIA(0):   Option "UseEDIDDpi" "FALSE"
(WW) NVIDIA(0):   Option "ModeValidation" "NoEdidModes"
(WW) NVIDIA(0): 
(WW) NVIDIA(0): See Appendix B: X Config Options in the README for details on
(WW) NVIDIA(0):     each of these options.
(WW) NVIDIA(0): 
(II) NVIDIA(0): Support for GLX with the Damage and Composite X extensions is
(II) NVIDIA(0):     enabled.
(II) NVIDIA(0): NVIDIA GPU GeForce 6200 LE (NV44) at PCI:1:0:0 (GPU-0)
(--) NVIDIA(0): Memory: 524288 kBytes
(--) NVIDIA(0): VideoBIOS: 05.44.02.45.07
(II) NVIDIA(0): Detected PCI Express Link width: 16X
(--) NVIDIA(0): Interlaced video modes are supported on this GPU
(--) NVIDIA(0): Connected display device(s) on GeForce 6200 LE at PCI:1:0:0:
(--) NVIDIA(0):     Samsung SyncMaster (DFP-0)
(--) NVIDIA(0): Samsung SyncMaster (DFP-0): 155.0 MHz maximum pixel clock
(--) NVIDIA(0): Samsung SyncMaster (DFP-0): Internal Single Link TMDS
(II) NVIDIA(0): Assigned Display Device: DFP-0
(WW) NVIDIA(0): No valid modes for "1920x1440+0+0"; removing.
(WW) NVIDIA(0): 
(WW) NVIDIA(0): Unable to validate any modes; falling back to the default mode
(WW) NVIDIA(0):     "nvidia-auto-select".
(WW) NVIDIA(0): 
(II) NVIDIA(0): Validated modes:
(II) NVIDIA(0):     "nvidia-auto-select"
(II) NVIDIA(0): Virtual screen size determined to be 1680 x 1050
(**) NVIDIA(0): DPI set to (96, 96); computed from "DPI" X config option
(==) NVIDIA(0): Enabling 32-bit ARGB GLX visuals.
(--) Depth 24 pixmap format is 32 bpp
(II) do I need RAC?  No, I don't.
(II) resource ranges after preInit:
    [0] -1    0    0x00100000 - 0x3fffffff (0x3ff00000) MX[b]E(B)
    [1] -1    0    0x000f0000 - 0x000fffff (0x10000) MX[b]
    [2] -1    0    0x000c0000 - 0x000effff (0x30000) MX[b]

Last edited by mntester (2008-12-01 19:18:29)

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