system loses HDMI sound device

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This is up-to-date f32 amd64.

From time to time I find that I do not have sound, and then pavucontrol shows no configuration
is available. Sound is via HDMI to the monitor (TV). The internal sound device is not used.

So far the only way out I found is to log out/in, but this is not ideal. Is there a way to
make the system (I suspect it is X) see the sound device and enable it? Maybe with a udev command?

When all is well, I see this:
$ udevadm trigger -n -v |grep sound
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/hwC0D0
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/hwC0D2
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/input12
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/input12/event12
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/input13
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/input13/event13
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/input14
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/input14/event14
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/input15
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/input15/event15
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/input16
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/input16/event17
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/input17
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/input17/event18
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/input18
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/input18/event19
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/input19
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/input19/event20
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/input20
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/input20/event21
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/input21
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/input21/event22
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/pcmC0D0c
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/pcmC0D0p
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/pcmC0D10p
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/pcmC0D1p
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/pcmC0D2c
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/pcmC0D3p
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/pcmC0D7p
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/pcmC0D8p
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/pcmC0D9p
/sys/devices/pci0000:00/0000:00:1f.3/sound/card0/controlC0
/sys/devices/virtual/sound/seq
/sys/devices/virtual/sound/timer

When I have no sound I am missing the last two devices.

In case it is related, there is also a KVM instance running on this machine.

--
Eyal Lebedinsky (fedora@xxxxxxxxxxxxxx)
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