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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#c111">Comment # 111</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:prymoo@gmail.com" title="Przemysław Kopa <prymoo@gmail.com>"> <span class="fn">Przemysław Kopa</span></a>
</span></b>
<pre>(In reply to Lukas Wunner from <a href="show_bug.cgi?id=75985#c110">comment #110</a>)
<span class="quote">> What does "cat /sys/bus/pci/devices/0000:01:00.1/hdaudioC1D0/revision_id" say?</span >
It says: 0x100100
<span class="quote">> If you add "codec->link_down_at_suspend = 1;" to patch_nvhdmi() in
> sound/pci/hda/patch_hdmi.c, the issue may go away.
>
> The only question is whether your card's revision_id is listed in
> snd_hda_id_hdmi[] such that patch_nvhdmi() is executed for your card.</span >
I added "HDA_CODEC_ENTRY(0x10de0403, "GPU 0403 HDMI/DP", patch_nvhdmi)" to
snd_hda_id_hdmi[] (PCI ID of my Nvidia HDA wasn't there) and
"codec->link_down_at_suspend = 1;" to patch_nvhdmi(). With those changes dGPU
and HDA suspended normally (after echoing "auto" to HDA control file), so I
think that this is definiteley the right track!</pre>
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