Interestingly enough, I had a (probably unrelated) issue where
WPA_Supplicant, plasmashell, and kworker were using 100% CPU, forcing me
to reboot. And now upon reboot my Bluetooth works perfectly fine. I
swear I didn't do anything else. Issue fixed on my end.
- Bug#979729: firmware-realtek: WiFi works fine with Realtek RTL8... Alex Relis
- Bug#979729: Problem magically fixed itself...? Alex Relis