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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [NVC1] HDMI audio device only visible after rescan"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=75985#c84">Comment # 84</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [NVC1] HDMI audio device only visible after rescan"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=75985">bug 75985</a>
              from <span class="vcard"><a class="email" href="mailto:lukas@wunner.de" title="Lukas Wunner <lukas@wunner.de>"> <span class="fn">Lukas Wunner</span></a>
</span></b>
        <pre>(In reply to Przemysław Kopa from <a href="show_bug.cgi?id=75985#c83">comment #83</a>)
<span class="quote">> This is the output of grep . /sys/bus/pci/devices/0000:01:00.1/power/*:

> /sys/bus/pci/devices/0000:01:00.1/power/control:on</span >

Something has forced the HDA on, hence it doesn't autosuspend.

Does the issue go away if you re-enable runtime suspend? Try:

echo auto > /sys/bus/pci/devices/0000:01:00.1/power/control</pre>
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