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<div>System Settings correctly identifies all three channels,
.i.e, Rear stereo, Front stereo, and HDMI/DP 8ch.</div>
<div>When I try any of the 3 Test buttons, it claims:</div>
<div>
<p style="margin:0px;text-indent:0px;white-space:pre-wrap">Error trying to play a test sound. </p>
<p style="margin:0px;text-indent:0px;white-space:pre-wrap">The system said: "No such driver"</p>
<p style="margin:0px;text-indent:0px;white-space:pre-wrap">dmesg shows three pcm devices:</p>
<p style="margin:0px;text-indent:0px;white-space:pre-wrap"><span
style="font-family:monospace"><span
style="color:rgb(0,0,0);background-color:rgb(255,255,255)">dmesg|grep pcm</span>
pcm0: <Realtek ALC671 (Rear Analog)> at nid 20 and 27 on hdaa0
pcm1: <Realtek ALC671 (Analog)> at nid 33 and 24 on hdaa0
pcm2: <Intel Kaby Lake (HDMI/DP 8ch)> at nid 3 on hdaa1
</span></p>
<p style="margin:0px;text-indent:0px;white-space:pre-wrap"><span
style="font-family:monospace">I wrote a sh script and can produce sound at pcm0 and pcm1, but not pcm2.</span></p>
<p style="margin:0px;text-indent:0px;white-space:pre-wrap"><span
style="font-family:monospace">What driver does KDE believe is missing? This is a fresh install, installed software from packages, but switched to ports trying to find audio solutions.</span></p>
<p style="margin:0px;text-indent:0px;white-space:pre-wrap"><span
style="font-family:monospace">I put hw.snd.default_unit=2 in /boot/loader.conf Still no sound from hdmi.
</span></p>
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