On Wed, 15 Mar 2006, John Hayward wrote:

Dear XFree People,
I recently upgraded my machine - uses NetBSD-3.0 OS, Gateway FPD1930 Display, with I810 built-in video and XFree86 V 4.5.0. X detects various video modes from the monitor which don't seem to be rejected because of timing yet when are specified in the Display subsection of the Monitor section are discarded because it reports ...no mode of this name... I even manually set up a mode with a unique name and yet X still rejects it because of ...no mode of this name...
  It uses a built-in mode of 480x640 (one of the ones it detected).
  How do I get it to use a different mode?
  Below are the XF86Config and XFree86.0.log files
==== XF86Config ===

        [...]

Section "Monitor"
        #DisplaySize      380   300     # mm
        Identifier   "Monitor0"
        VendorName   "GWY"
        Mode "1024x1280JCH"
             ^^^^^^^^^^^^^^

               DotClock 135.0
                HTimings 1280 1328 1440 1688
               VTimings 1024 1025 1028 1066
        EndMode
        ModelName    "FPD1930"
        Option      "DPMS"
EndSection

        [...]

Section "Screen"
       Defaultdepth 16
        Identifier "Screen0"
        Device     "Card0"
        Monitor    "Monitor0"
        SubSection "Display"
                Viewport   0 0
                Depth     1
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     4
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     8
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     15
        EndSubSection
        SubSection "Display"
                Viewport   0 0
               Virtual 1024 780
                 ^^^^^^^^^^^^^^^^

                Depth     16
               Modes "1280x1024" "1024x768" "800x600" "1280x1024JCH"
                                                        ^^^^^^^^^^^^^^

        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     24
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     32
        EndSubSection
EndSection

First, "1024x1280JCH" != "1280x1024JCH".

Secondly, your Virtual specification will limit the physical modes you can end up with.

Marc.

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