<div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Mar 9, 2022 at 8:38 PM Ken Mandelberg <<a href="mailto:km@mathcs.emory.edu">km@mathcs.emory.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
  

    
  
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      <div>Yes, I was starting from the GUI. I
        now switched to a CLI boot, and tried to follow the wiki running<br>
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      <div><span style="color:rgb(0,0,0);font-family:monospace,Courier;font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(249,249,249);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">       
          QT_QPA_PLATFORM=eglfs mythfrontend</span></div>
      <div><span style="color:rgb(0,0,0);font-family:monospace,Courier;font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(249,249,249);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><br>
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      <div><span style="color:rgb(0,0,0);font-family:monospace,Courier;font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(249,249,249);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">I get
          "Cannot Find DRM Device"</span></div>
      <div><span style="color:rgb(0,0,0);font-family:monospace,Courier;font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(249,249,249);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><br>
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      <div><span style="color:rgb(0,0,0);font-family:monospace,Courier;font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(249,249,249);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">Any
          suggestions?<br>
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      <div>Peter Bennett wrote on 3/8/22 11:10:<br>
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        On 3/8/22 10:55, Ken Mandelberg wrote: <br>
        <blockquote type="cite">Peter, thanks! <br>
          <br>
          I have an old 3B (not 3B+) that was doing nothing, so I
          thought I would try it. <br>
          <br>
          I loaded Buster and then the Mythtv light. No tweaks no MPG
          license. The GUI ran painfully slowly each screen change
          rendered incrementally. The setup video even in standard was
          very choppy. <br>
          <br>
          Is there anything I can do to make this usable, or is a 3B
          just totally inadequate. <br>
        </blockquote>
        <br>
        It should not be that bad. Did you follow the guide in the wiki?
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        <a href="https://www.mythtv.org/wiki/Raspberry_Pi#Setup_on_Raspbian" target="_blank">https://www.mythtv.org/wiki/Raspberry_Pi#Setup_on_Raspbian</a>
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        and improving performance <br>
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        <a href="https://www.mythtv.org/wiki/Raspberry_Pi#System_Performance" target="_blank">https://www.mythtv.org/wiki/Raspberry_Pi#System_Performance</a>
        <br>
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        This version is run from command line so you should set up the
        system to start in command line mode. <br>
        <br>
        Peter<br></blockquote></div></div></blockquote><div><br></div><div>This was discussed on the mythtv forum (link below). But here is a quick summary.</div><div>use this command:</div><div> QT_QPA_EGLFS_ALWAYS_SET_MODE="1" QT_QPA_PLATFORM=eglfs QT_QPA_EGLFS_KMS_CONFIG=./pi_mythfrontend.json mythfrontend --noupnp --logpath /tmp</div><div><br></div><div>and create ./pi_mythfrontend.json:</div><div><span style="color:rgb(46,139,87);font-family:Monaco,"Andale Mono","Courier New",Courier,monospace;font-size:11.7px;white-space:pre">{
    "device": "/dev/dri/by-path/platform-gpu-card",
    "outputs": [
        { "name": "HDMI1", "mode": "1920x1080@60" }
    ]
}</span><br></div><div><a href="https://forum.mythtv.org/viewtopic.php?f=46&t=4694">https://forum.mythtv.org/viewtopic.php?f=46&t=4694</a><span style="color:rgb(46,139,87);font-family:Monaco,"Andale Mono","Courier New",Courier,monospace;font-size:11.7px;white-space:pre"><br></span></div><div><br></div><div>Jim A</div><div><br></div></div></div>