[Bug 254458] emulators/virtualbox-ose audio: input: saved states of running FreeBSD or FreeBSD-based guests are almost completely non-responsive after starting; ACPI shutdowns fail

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254458

--- Comment #18 from Graham Perrin <grahamperrin@gmail.com> ---
Finally, the bug seems to be consistently: 

* not reproducible with audio input disabled
*     reproducible with audio input enabled.

Tested, with four new machines, .vhd files extracted from FreeBSD-provided
archives: 

FreeBSD-11.4-RELEASE-amd64.vhd.xz
FreeBSD-12.1-RELEASE-amd64.vhd.xz
FreeBSD-12.2-RELEASE-amd64.vhd.xz
FreeBSD-13.0-RELEASE-amd64.vhd.xz


Host
====

% uname -v
FreeBSD 14.0-CURRENT #95 main-n246689-91f251b2ab3: Sat May 15 12:34:23 BST 2021
    root@mowa219-gjp4-8570p:/usr/obj/usr/src/amd64.amd64/sys/GENERIC-NODEBUG 
% pkg query '%o %v %R' virtualbox-ose virtualbox-ose-kmod
emulators/virtualbox-ose 6.1.22 FreeBSD
emulators/virtualbox-ose-kmod 6.1.22 FreeBSD
% 

----

To anyone with a host running 12.2-RELEASE-p6 or 13.0-RELEASE: 

* can you reproduce the bug with any FreeBSD or FreeBSD-based guest? 

1. Gracefully shut down the guest 
2. enable audio input
3. start the guest
4. close the window
5. save the machine state
6. start the guest
7. attempt keyboard input, or an ACPI shutdown …

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