Modeline for 1024x1024 not accepted - Xwindows

This is a discussion on Modeline for 1024x1024 not accepted - Xwindows ; I'm trying to setup X for a monitor which doesn't have DDC. The monitor has the following parameters: size: 6" x 6" 64 kHz horizontal auto sync video bandwidth 50 MHz resolution 1024 x 1024 non-interlaced For testing I'm using ...

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Thread: Modeline for 1024x1024 not accepted

  1. Modeline for 1024x1024 not accepted

    I'm trying to setup X for a monitor which doesn't have DDC.
    The monitor has the following parameters:

    size: 6" x 6"
    64 kHz horizontal auto sync
    video bandwidth 50 MHz
    resolution 1024 x 1024 non-interlaced

    For testing I'm using another monitor with DDC:

    X Window System Version 6.8.2
    Release Date: 9 February 2005
    ....
    (II) VIA(0): Manufacturer: OEC Model: 706 Serial#: 1
    ....
    (II) VIA(0): Monitor[0]: Using default hsync range of 32.74-69.85 kHz
    (II) VIA(0): Monitor[0]: Using default vrefresh range of 60.00-85.00 Hz
    (II) VIA(0): Clock range: 20.00 to 230.00 MHz
    ....
    (**) VIA(0): *Default mode "1280x1024": 108.0 MHz (scaled from 0.0 MHz), 64.0
    kHz, 60.0 Hz
    (II) VIA(0): Modeline "1280x1024" 108.00 1280 1328 1440 1688 1024 1025 1028
    1066 +hsync +vsync

    As far as I understand this monitor should be able to display
    the lower resolution 1024 x 1024. I have included a new Modeline
    in /etc/X11/xorg.conf:

    Modeline "1024x1024" 61.34 1024 1040 1104 1216 1024 1027 1030 1051

    But X refuses to use this modeline:

    (II) VIA(0): Refreshrate (0.000000Hz) for "1024x1024" too high for available
    memory bandwidth.
    (II) VIA(0): Not using mode "1024x1024" (unknown reason)
    ....
    (II) VIA(0): Not using mode "1024x1024" (no mode of this name)

    The system is SuSE Linux Prof. 9.3 running on an EPIA PD6000 with
    VIA CLE266 UniChrome Graphic.

    Can anybody help me?

    TIA,
    Bernhard

  2. Re: Modeline for 1024x1024 not accepted


    Bernhard Küpper wrote:
    > I'm trying to setup X for a monitor which doesn't have DDC.
    > The monitor has the following parameters:
    >
    > size: 6" x 6"
    > 64 kHz horizontal auto sync
    > video bandwidth 50 MHz
    > resolution 1024 x 1024 non-interlaced
    >
    > For testing I'm using another monitor with DDC:
    >
    > X Window System Version 6.8.2
    > Release Date: 9 February 2005
    > ...
    > (II) VIA(0): Manufacturer: OEC Model: 706 Serial#: 1

    ---8<---
    > (II) VIA(0): Not using mode "1024x1024" (unknown reason)
    > ...
    > (II) VIA(0): Not using mode "1024x1024" (no mode of this name)


    Maybe the X server doesen't know how to set that resolution. Some
    X.org drivers are limited to resolutions provided by the card BIOS. I
    have this problem with an Intel i915 onboard card. :-(

    --- Casantos


  3. Modeline for 1024x1024 not accepted

    Bernhard wrote:

    > (II) VIA(0): Refreshrate (0.000000Hz) for "1024x1024"
    > too high for available memory bandwidth.


    Seems to be pretty straight forward to me.
    Check your frequencies:
    - Pixel-clock (why did you use 61.34MHz instead of the 108 that
    seemed to work?)
    - line sync (by adjusting what is now "1216")
    - frame sync (by adjusting the last number "1051")
    All three need to match the hardware specification of your graphics
    adapter. Line and frame sync pulses (your "1040"-"1104" and
    "1027"-"1030")must also match your monitor specification, otherwise
    your log-file might look o.k. but the monitor will either switch off
    to protect itself or show some funny line and/or frame wrap around
    efects.

    Gerhard.
    BTW: I installed "Ubuntu" on an EPIA-TC1000 some weeks ago and I feel
    to remember that I was pretty surprised by the number of available
    pixel/dot clock frequencies. I ended up with some dummy config files
    just to identify those frequencies. In the good old days I once had
    at least one XServer that listed th available pixel clock frequencies.

  4. Re: Modeline for 1024x1024 not accepted

    =?ISO-8859-15?Q?Bernhard_K=FCpper?= writes:

    > The system is SuSE Linux Prof. 9.3 running on an EPIA PD6000 with
    > VIA CLE266 UniChrome Graphic.
    >
    > Can anybody help me?


    You might wish to join the openchrome mailing list. See
    http://www.openchrome.org
    The helpful regulars there were able to help me set up a 1440x900
    monitor for which there wasn't a standard modeline.

    --
    Atro Tossavainen (Mr.) / The Institute of Biotechnology at
    Systems Analyst, Techno-Amish & / the University of Helsinki, Finland,
    +358-9-19158939 UNIX Dinosaur / employs me, but my opinions are my own.
    < URL : http : / / www . helsinki . fi / %7E atossava / > NO FILE ATTACHMENTS

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