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    <div class="moz-cite-prefix">Jon, yes the file exists on our system
      here.  Contains just a zero.<br>
      -- barry<br>
      <br>
      On 18/08/2013 6:18 p.m., Jon Nettleton wrote:<br>
    </div>
    <blockquote
cite="mid:CALHpu34w24aXf=aNP9or1uXwjDjcQ0JiaVYUN9OfoT2Gda8ZKw@mail.gmail.com"
      type="cite">
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        <div class="gmail_extra"><br>
          <br>
          <div class="gmail_quote">On Sun, Aug 18, 2013 at 7:57 AM,
            Barry Vercoe <span dir="ltr"><<a moz-do-not-send="true"
                href="mailto:barry@laptop.org.au" target="_blank">barry@laptop.org.au</a>></span>
            wrote:<br>
            <blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
              <div bgcolor="#FFFFFF" text="#000000">
                <div><small>Of Course!!  I used to have that problem
                    when I played long Csound demos -- overworking the
                    Flt Pt processor yet untouched by human hands ...  
                    I don't know why I didn't relate the two situations.<br>
                    <br>
                    Turned off power saving, and the problem immediately
                    went away. <br>
                    No, power saving doesn't turn off automatically when
                    hdmi is plugged in.  Perhaps it should ... <br>
                    Or at least we should have a warning distributed
                    with the hdmi cable that the port will turn off
                    after 15 seconds with power saving on.<br>
                    <br>
                  </small></div>
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            </blockquote>
            <div><br>
            </div>
            <div>Could you check something quick for me.  Does the
              status
              file /sys/devices/d420b000.display/pxa168fb_gfx.1/hpd
              exist on your system?</div>
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            <div>
              Thanks</div>
            <div><br>
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            <div> </div>
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0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
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                <div><small> Thanks all.<span class=""><font
                        color="#888888"><br>
                        -- b<br>
                      </font></span></small>
                  <div class="im"><br>
                    On 18/08/2013 5:26 p.m., Tom Parker wrote:<br>
                  </div>
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                <div class="im">
                  <blockquote type="cite">On 18/08/13 17:05, Barry
                    Vercoe wrote: <br>
                    <blockquote type="cite">OK, with tail -f ...
                      messages, I do see a burst of messages and the <br>
                      projector shows the exact screen.  But only for 15
                      seconds, when the <br>
                      projector then goes blank and reverts to _No
                      Signal_ until I touch <br>
                      something on the XO like the screen, track pad or
                      some key.  Apparently <br>
                      the XO has stopped sending hdmi signals, so the
                      projector is reporting <br>
                      exactly that. <br>
                    </blockquote>
                    <br>
                    When the display goes blank, does the power light
                    start flashing to indicate the laptop has gone to
                    sleep? <br>
                    <br>
                    Try turning off power saving in the settings. When I
                    was testing, the power saving automatically turned
                    off when I plugged in an external display and turned
                    on again when I unplugged it, but perhaps this isn't
                    working on your laptop? <br>
                  </blockquote>
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              <br>
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              <br>
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