• Recent
    • Docs
    • Github
    • 百度网盘
    • Onedrive
    • Official
    • Shop
    • Register
    • Login

    HDMI display 綠屏

    Scheduled Pinned Locked Moved Peripheral
    6 Posts 2 Posters 535 Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • T
      tonyone0902
      last edited by tonyone0902

      請教個問題,我有一個屏走 HDMI ,插入後發現像這樣:

      alt text

      有建議的修改方向嗎?謝謝

      T G 3 Replies Last reply Reply Quote 0
      • T
        tonyone0902 @tonyone0902
        last edited by

        這問題我自己 update 一下
        我手上有幾個屏我有試過有用下面的方式:

        1. 把 wayland False 打開
        sudo vim /etc/gdm3/custom.conf 
        WaylandEnable=false
        
        1. cvt 1680 1050 60 => 會顯示相關的參數如下
        # 1680x1050 59.95 Hz (CVT 1.76MA) hsync: 65.29 kHz; pclk: 146.25 MHz
        Modeline "1680x1050_60.00"  146.25  1680 1784 1960 2240  1050 1053 1059 1089 -hsync +vsync
        
        1. xrandr --newmode "1680x1050_60.00" 146.25 1680 1784 1960 2240 1050 1053 1059 1089 -hsync +vsync
        2. xrandr --addmode HDMI-1 "1680x1050_60.00"
        3. xrandr --output HDMI-1 --mode "1680x1050_60.00"

        以上,通常如果有對應到 PCLK/ HCLK ,就可以解。

        但是也有少數的屏依然綠屏,這是屏廠商的 fw 問題,通常遇到屏的驅動是 for windows ,請廠商燒錄 for mac or android 版本就能解。

        T G 2 Replies Last reply Reply Quote 2
        • T
          tonyone0902 @tonyone0902
          last edited by tonyone0902

          上面講到的 cvt ,他是針對 CVT 標準去計算出的值,但是有些時候屏對應的 PCLK HCLK 會差一點點導致畫面有些微不同,可以用這個計算機去產生你要的參數:

          https://tomverbeure.github.io/video_timings_calculator截圖 2023-03-29 下午5.41.01.png

          1 Reply Last reply Reply Quote 1
          • G
            george @tonyone0902
            last edited by

            This post is deleted!
            1 Reply Last reply Reply Quote 0
            • G
              george @tonyone0902
              last edited by

              @tonyone0902 数据格式的问题可能性比较大。

              1 Reply Last reply Reply Quote 1
              • G
                george @tonyone0902
                last edited by george

                @tonyone0902 显示异常的时候,打印一下下面两个命令,结果发上来:
                sudo cat /sys/kernel/debug/dri/0/summary
                sudo cat /sys/kernel/debug/dw-hdmi0/status

                1 Reply Last reply Reply Quote 0
                • J jack_admin moved this topic from Ubuntu on
                • 1 / 1
                • First post
                  Last post