Ubuntu 20.04 simply stopped recognizing my Bluetooth adapter

I’ve been running Ubuntu 20.04 for a long time but recently bluetooth has been getting squirrely. I installed blueman and then it worked fine again. Today I rebooted and now it doesn’t appear to recognize I have a bluetooth adapter at all. It is an Inspiron 15 3000 with a built in bluetooth adapter. When I run rfkill all I get is:

rfkill list

0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no

No bluetooth.

When I run bluetoothctl

Waiting to connect to bluetoothd...

And then it just sits there. It’s like the machine just stopped seeing the adapter altogether. Anybody know how to fix this? The hardware is only like 14 months old.

Thanks.