I was using my bluetooth headphones (Bose QC35II) as usually but this week I had to unpair it and when I paired it again it didn't get recognized as a sound card anymore. The headphone remains with a intermittent light like is trying to connect but the system shows it as connected.
Other bluetooth stuff like a mouse and a keyboard are working and pairing with no problems.
I don't know what happened, maybe a kernel or firmware update?
System Info:
KDE Neon based in 16.04
kernel 4.15.0-32-generic
KDE 5.13.4
Wifi/Bluetooth Intel 8265