Dell Precision M4800 please help ! Discrete to UMA

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  • laptopbn
    Senior Member
    • Jul 2016
    • 71
    • Viet Nam

    #1

    Dell Precision M4800 please help ! Discrete to UMA

    as title Dell Precision M4800 please help ! Discrete to UMA (la-9772p) .
    thank you
  • mrwab
    Banned
    • Jan 2014
    • 83
    • morocco

    #2
    Re: Dell Precision M4800 please help ! Discrete to UMA

    try remove dedicated graphics card first

    Comment

    • laptopbn
      Senior Member
      • Jul 2016
      • 71
      • Viet Nam

      #3
      Re: Dell Precision M4800 please help ! Discrete to UMA

      Originally posted by mrwab
      try remove dedicated graphics card first
      thanks
      i have removed the vga without displaying lcd, only capslock signal, at u19 (MAX14885E) pins 1 vs 39 have been put up to 3v3, and the VGA_ID r803 line I can't find. pls help

      Comment

      • thesleepwalker
        Member
        • Jun 2014
        • 12
        • Vietnam

        #4
        Originally posted by laptopbn
        Re: Dell Precision M4800 please help ! Discrete to UMA


        thanks
        i have removed the vga without displaying lcd, only capslock signal, at u19 (MAX14885E) pins 1 vs 39 have been put up to 3v3, and the VGA_ID r803 line I can't find. pls help
        did you solve your problem

        Comment

        • laptopbn
          Senior Member
          • Jul 2016
          • 71
          • Viet Nam

          #5
          not supported

          Comment

          • jokophp
            Member
            • Dec 2017
            • 39
            • indonesia

            #6
            I have succeeded in converting the M4800 from two VGA to just one Intel VGA, with a few tricks,
            Attached Files

            Comment

            • laptopbn
              Senior Member
              • Jul 2016
              • 71
              • Viet Nam

              #7
              Originally posted by jokophp
              I have succeeded in converting the M4800 from two VGA to just one Intel VGA, with a few tricks,
              Thank you, can you please let everyone know the value of the resistors?

              Comment

              • jokophp
                Member
                • Dec 2017
                • 39
                • indonesia

                #8
                10K, I just make the system detect that an MXM card is installed, by activating the signal MXM_present#

                remove QH3, to turn off the GFX_CLK_REQ# signal

                Maybe you can also use one of these two tricks

                Comment

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