EDID and HOWTO build one

Discussion in 'Linux Hardware' started by roo4, Oct 21, 2013.

  1. roo4

    roo4 New Member

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    Hello;
    I read the Post here https://www.osadl.org/Single-View.111 M591850c02b5.0.html ; and i tried to make do with what i understood from the post but here are some questions:
    1. where is the /lib/firmware located ;in for example /usr/src/linux/lib/firmware or /usr/lib/firmware or elsewhere?
    2.Could i use a pre-build EDID in that address the post gave and tweak it with an editor like Gvim and pass it to kernel using the info bellow; the resolution i am trying is 1600x900@60
    Code:
      1: [H PIXELS RND]  :  1600.000000
      2: [V LINES RND]  :  450.000000
      3: [V FIELD RATE RQD]  :  120.000000
      4: [TOP MARGIN (LINES)]  :  8.000000
      5: [BOT MARGIN (LINES)]  :  8.000000
      6: [INTERLACE]  :  0.500000
      7: [H PERIOD EST]  :  16.648841
      8: [V SYNC+BP]  :  33.000000
      9: [V BACK PORCH]  :  30.000000
      10: [TOTAL V LINES]  :  500.500000
      11: [V FIELD RATE EST]  :  120.008471
      12: [H PERIOD]  :  16.650017
      13: [V FIELD RATE]  :  120.000000
      14: [V FRAME RATE]  :  60.000000
      15: [LEFT MARGIN (PIXELS)]  :  32.000000
      16: [RIGHT MARGIN (PIXELS)]  :  32.000000
      17: [TOTAL ACTIVE PIXELS]  :  1664.000000
      18: [IDEAL DUTY CYCLE]  :  25.004995
      19: [H BLANK (PIXELS)]  :  560.000000
      20: [TOTAL PIXELS]  :  2224.000000
      21: [PIXEL FREQ]  :  133.573440
      22: [H FREQ]  :  60.060000
      17: [H SYNC (PIXELS)]  :  176.000000
      18: [H FRONT PORCH (PIXELS)]  :  104.000000
      36: [V ODD FRONT PORCH(LINES)]  :  1.500000
    if yes where could i get and edid.bin file?
    3.Or should i build an edid file from scratch; if yes how could i make edid file.
    Thanks

    Last edited: Oct 21, 2013
    DevynCJohnson likes this.

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