…when host sound device is undefined.
Boxes 40.2 on Fedora Rawhide, kernels 5.12-5.14 release candidates, up-to-date (?) Windows 10 vm running Remote Desktop to the office. My last dnf upgrade was 19 July.
I connect to my Windows 10 workstation at the office from my local (home) Windows 10 Boxes guest. After a few headaches when I added a Lenovo USB-C dock to the mix, things have mostly gone swimmingly for months.
Yesterday morning, pop-up notifications on the local or remote Windows machine were sufficient to crash Boxes. The result is the modal dialogue stating “Boxes” is not responding. If I choose Wait, Boxes goes away anyway. When I restart Boxes, the local Windows vm is still running so I pick up where I left off.
This crash is minor compared to those I’ve experienced (infrequently) which require the forced shutdown of the guest or the host, occasionally (but not always) involving an already-running Firefox on the host machine.
I disabled sounds as well as all notifications I could find (the CAD application I use makes use of the system Exclamation! sound) and it seems to have stabilized. When I get a chance to restart, I’ll see if I can diagnose the missing sound device issue. The problem when I started using the Lenovo dock was that I needed to open Settings and switch from dock to the internal audio devices. This week instead of too many devices, there aren’t any.