How to suppress audio device detection popups?

I mainly work on my laptop running Linux Mint 21.3 with XFCE, and if I walk away for a while, the power management shuts down the screens. This is fine.

The issue is when I come back and power everything up, I get [these popups](https://imgur.com/9Y43AW3.png). It's really annoying as I either have to click them all individually to dismiss them, or wait 10-20 seconds for them to disappear, and they show up over anything I might be working on.

Is there a way to disable this notification? I've gone into Settings Manager > Notifications > Applications and tried to remove anything related to audio, but that hasn't worked.

I'm going to try setting "Do Not DIsturb" but I actually do want some notifications like Discord, Slack, and Printer notifications.

I haven't been able to find any help articles on this. I think it's being handled through [XFCE notifyd](https://docs.xfce.org/apps/notifyd/start) but the settings don't match the behavior. I also can't mute a specific application - I have to "forget" it in the application settings, and the notifications log is blank. Not sure what's going on.

Any advice would be appreciated!