[Bug 194727] uaudio device gets disconnected, and hangs usb until everything using /dev/mixer* is closed

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=194727

Greg V <greg at unrelenting.technology> changed:

           What    |Removed                     |Added
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                 CC|                            |greg at unrelenting.technology

--- Comment #17 from Greg V <greg at unrelenting.technology> ---
I'm seeing a similar-but-not-really issue on my aarch64 box (MACCHIATObin).
After watching YouTube for some minutes, with an old ASUS Xonar uaudio0
(recognized as "C-Media Electronics Inc. USB Advanced Audio Device"), suddenly
for a couple seconds the audio starts crackling and muting, and then stops, and
in a few seconds USB input (!) stops working. Specifically USB mouse and
keyboard. USB Ethernet keeps working fine. I can even start playing music over
SSH, headphones are silent but the progress bar keeps going. I can unplug the
audio card and it detaches fine. But USB input is dead, even after `usbconfig
reset` there are no events on libinput, no input on the vt console either.

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