<br><br>On Tuesday, 17 September 2013, Martin Bene wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal"><span lang="EN-US">Hi,<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">I’m trying to get surround sound working with myth 0.26 fixes using a pioneer VX 1122k sound receiver; connection myth
</span><span lang="EN-US" style="font-family:Wingdings">è</span><span lang="EN-US"> receiver is via HDMI (myth graphics is NVidia ion on an Acer Aspire Revo 3610).<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Speakers connected to the receiver are a basic 5.1 configuration.
<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Checking the speaker configuration in the receiver setup/diagnostics works OK, i.e. the sound comes from the correct speaker when playing test sounds.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Now I’ve tried two configurations in myth:<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p><u></u><span lang="EN-US"><span>a)<span style="font:7.0pt "Times New Roman"">
</span></span></span><u></u><span lang="EN-US">Digital pass-through: works as expected, sound comes from the correct speakers<u></u><u></u></span></p>
<p><u></u><span lang="EN-US"><span>b)<span style="font:7.0pt "Times New Roman"">
</span></span></span><u></u><span lang="EN-US">Activate software mixer and 5.1 speaker configuration in myth: if I go into the audio test screen, I get mixed up channels:<u></u><u></u></span></p>
<p style="margin-left:108.0pt"><span lang="EN-US">Front Left: OK<u></u><u></u></span></p>
<p style="margin-left:108.0pt"><span lang="EN-US">Front Right: OK<u></u><u></u></span></p>
<p style="margin-left:108.0pt"><span lang="EN-US">Center: Not OK, plays on surround left<u></u><u></u></span></p>
<p style="margin-left:108.0pt"><span lang="EN-US">Surround Left: Not OK, plays on center<u></u><u></u></span></p>
<p style="margin-left:108.0pt"><span lang="EN-US">Surround Right: OK<u></u><u></u></span></p>
<p style="margin-left:108.0pt"><span lang="EN-US">LFE: Not OK, also plays on Surround Right<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Any idea how this can happen? Or even better: is there a way to configure channel mapping in myth so I end up with a working software mixer for 5.1? from a quality POV using pass-through is probably better, but the convenience
of being able to control basic volume using the myth remote isn’t to be sneered at either.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><br></span></p><p class="MsoNormal"><span lang="EN-US"><u></u></span></p></div></div></blockquote><div><br></div><div>There's a hardware bug on ion1/9400 video adapter, the mapping of channels is incorrect. The easiest way to get around it is to force AC3 output (setup -> audio -> advanced -> check stereo PCM). This comes with a slight audio quality loss.</div>
<div>Or you'll have to adjust alsa config and remap channels there, there are examples on how to do so on the alsa web site.</div><div><br></div><div> </div>