Results 1 to 4 of 4

Thread: Restrict LiveCD resolution

  1. #1
    Join Date
    Feb 2007
    Location
    California
    Beans
    77
    Distro
    Ubuntu 7.10 Gutsy Gibbon

    Restrict LiveCD resolution

    Hi

    How can I make my XUbuntu (or Ubuntu) live CD to start by default in 1024x768 mode.

    The reason is I'll be using live CDs to run as a kiosks and I need them all to start in 1024x768 no matter what.

    Thanks
    Ralph
    __________________
    Ralph
    http://www.TheOrangeIT.org

  2. #2
    Join Date
    Nov 2006
    Location
    OE
    Beans
    2,831
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Restrict LiveCD resolution

    Here is a table of video modes I think you want 773
    So if you press F4 from the livecd boot menu you would enter vga=773
    Hope that helps.
    Good site to search for guides & how-tos.

  3. #3
    Join Date
    Feb 2007
    Location
    California
    Beans
    77
    Distro
    Ubuntu 7.10 Gutsy Gibbon

    Re: Restrict LiveCD resolution

    Hi

    That's only during a boot. Then X is taking over and uses something called DDC to query monitor for supported modes. In my case it defaults to 1280×1024 even if I ask it otherwise in my xorg.conf.

    I modified /usr/bin/dexconf script on the Live CD to put my configuration in the xorg.conf that LiveCD's X will use.

    When I start LiveCD my xorg.conf like in attached file.


    But it's still starting in 1280×1024 instead of desired 1024x768.

    I could add: Option "NoDDC" in Screen section but then I run into issues with vertical refresh. LiveCD boots to 1024x768 but the screen is shifted left 1/3 of the way.

    I would appreciate any help.
    Attached Files Attached Files

  4. #4
    Join Date
    Nov 2006
    Location
    OE
    Beans
    2,831
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Restrict LiveCD resolution

    I guess you probably know about this:
    Note: As of Ubuntu 8.04 and Xorg 7.3, the setup and configuration of /etc/X11/xorg.conf has changed. Please see the Xorg in Ubuntu 8.04 for more information.

    For additional troubleshooting resources, please also see the Ubuntu X Team wiki
    Which is from the Community Docs on video configuration here.

    Just including that in case you aren't aware of all the changes.
    Good site to search for guides & how-tos.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •