Comment 2 for bug 1816548

Understanding that usbguard is a target for main, I've been running it on my laptop for a little while and can say that there is a real issue with the daemon stopping which causes all USB inserts to fail closed until the daemon is restarted. I've also suspected some external keyboard weirdness after plug/unplug/plug to be because of usbguard. I've not debugged any of this but feel like it has something to do with an udevadm trigger events, perhaps as done by snapd, perhaps by suspend/resume. I highly recommend someone really test this software's usability before we put ourselves on the hook for maintenance (I tried it a year or more ago and it was quite unusable, but seems better now, so I may be biased).