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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#c83">Comment # 83</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><span class="quote">> Check the runtime PM status of the HDA:
> grep . /sys/bus/pci/devices/0000:01:00.1/power/*</span >
This is the output of grep . /sys/bus/pci/devices/0000:01:00.1/power/*:
/sys/bus/pci/devices/0000:01:00.1/power/async:enabled
/sys/bus/pci/devices/0000:01:00.1/power/control:on
/sys/bus/pci/devices/0000:01:00.1/power/runtime_active_kids:0
/sys/bus/pci/devices/0000:01:00.1/power/runtime_active_time:122453
/sys/bus/pci/devices/0000:01:00.1/power/runtime_enabled:forbidden
/sys/bus/pci/devices/0000:01:00.1/power/runtime_status:active
/sys/bus/pci/devices/0000:01:00.1/power/runtime_suspended_time:4310
/sys/bus/pci/devices/0000:01:00.1/power/runtime_usage:1
/sys/bus/pci/devices/0000:01:00.1/power/wakeup:disabled
<span class="quote">> Check if user space applications have opened the HDA:
> lsof /dev/snd/controlC1</span >
Output of lsof /dev/snd/controlC1 is empty. Normally I'm using pulseaudio and
it grabs the card, but I uninstalled it for testing purposes and it doesn't
make a difference - card stays enabled.
Additionally, if I try to manually turn off dGPU using echo OFF >
/sys/kernel/debug/vgaswitcheroo/switch, it does nothing.</pre>
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