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    微雪电子屏幕无法显示

    Scheduled Pinned Locked Moved Maker
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    • A
      allen
      last edited by allen

      https://www.waveshare.net/wiki/7inch_HDMI_LCD_(H)
      使用的是这款屏幕,插上HDMI后无法显示。
      测试Coolpi插采集卡能显示。
      微雪的屏幕插电脑能显示。
      Coolpi插微雪屏幕就一直显示无信号

      1 Reply Last reply Reply Quote 0
      • G
        george
        last edited by

        内核更新到最新测试,然后打印一份dmesg传上来。

        A 1 Reply Last reply Reply Quote 0
        • A
          allen @george
          last edited by

          @george 看了https://gitee.com/yanyitech/coolpi-kernel,最新一次提交是11月6号,我的也是11月6号的版本,是最新的了。
          dmesg.txt

          G 1 Reply Last reply Reply Quote 0
          • G
            george @allen
            last edited by

            @allen 插入HDMI的情况下敲如下命令:
            cat /sys/class/drm/card0-HDMI-A-1/enabled

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            • A
              allen @george
              last edited by

              @george
              coolpi@coolpi:~$ cat /sys/class/drm/card0-HDMI-A-1/enabled
              disabled

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              • G
                george
                last edited by

                机器没有识别到这个HDMI设备。可能是接口或者分辨率非标准导致。

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