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HDMI out Harmony with L4T Beta Release
  • Vote Up4Vote Down avanderheyden3
    Posts: 4
    Successfully installed the Beta release of L4T, but can only access board via minicom/serial port. I'd like to get it working so that I can use a window manager over the HDMI. From what I gather, displaying to an HDMI monitor should be an included ability in the Beta release. However, whenever I try and start X, I get a single artifacted image of the terminal on the display that doesn't update, and xinit errors out saying:

    (==) Using config file: "/etc/X11/xorg.conf"
    (==) Using system config directory "/usr/share/X11/xorg.conf.d"
    [ 7646.613494] nvhdcp: Error: Ri is 0!
    [ 7646.616990] nvhdcp: Error: link verification failed err -22

    It seems to me that the board is not communicating properly with the monitor, but for the life of me, I can't figure out why. I've not changed the configuration files for xorg; they're exactly what came with the sample rootfs.

    Suggestions?

    Thanks,
    Andy V.
  • 6 Comments sorted by
  • Vote Up0Vote Down lr75021
    Posts: 1
    Is there anyone can provide update for this? I tried both Alpha and Beta, both don't have HDMI output.

    Thanks,

    hal
  • Vote Up0Vote Down tulez
    Posts: 12
    I've posted similar question about output to VGA which is not supported, but HDMI wasn't working either. Andrew Edelsten responded to me previously in this post http://forums.developer.nvidia.com/devforum/discussion/comment/2431#Comment_2431
  • Vote Up0Vote Down avanderheyden3
    Posts: 4
    Am I to assume that you got it working by changing your odm data during the flashing process, tulez? I did attempt that, but it still doesn't work.

    Thanks,
    -Andy V.
  • Vote Up0Vote Down avanderheyden3
    Posts: 4
    Alright, I got it up and running (kind of). You do need to use that odm data string when flashing. After that, if you edit the xorg.conf file with your monitor refresh rates and a resolution of 640x480, you can get it to work. I'm stuck with 640x480, though, since the Harmony board and my monitor aren't playing nicely with each other.

    This fix only works if you're getting weirdly artifacted screens on the HDMI out on startup; otherwise, I don't know how much help it'll be.

    -Andy V.
  • Vote Up0Vote Down tulez
    Posts: 12
    Could you post your xorg.conf file?
    Thanks.
  • Vote Up0Vote Down avanderheyden3
    Posts: 4
    I could, but it's specific to your monitor, so it might not be as useful as you'd think. I will include the bit I appended to the NVIDIA provided xorg, though. Just paste this onto the end of the xorg.conf file, and you should get a workable monitor result (no promises, though). The values for horizontal and vertical refresh are pretty much standard; I don't know of a display that wouldn't support this format.

    Section "Monitor"
    Identifier "LVDS-1"
    VendorName "ASUS"
    ModelName "VW224U"
    HorizSync 65
    VertRefresh 60
    EndSection

    Section "Screen"
    Identifier "Screen0"
    Device "Tegra"
    Monitor "Monitor0"
    DefaultDepth 24
    SubSection "Display"
    Viewport 0 0
    Depth 24
    Modes "640x480"
    EndSubSection
    EndSection

    Also, here's the link to the site I used to come up with my own:

    http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/x-config.html

    Hope it helps.
    -Andy V.
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