Kernel regularly logs: Bluetooth: hci0: last event is not cmd complete (0x0f)

Kernel regularly logs: Bluetooth: hci0: last event is not cmd complete (0x0f) also unable to play audio via bluetooth speaker. It connects but there is no audio to bluetooth device.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 4.15.0-32.35-generic 4.15.18
Uname: Linux 4.15.0-32-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: anupam 1763 F.... pulseaudio
 /dev/snd/controlC1: anupam 1763 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Tue Aug 21 21:59:44 2018
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Title: PCI/internal sound card not detected
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/02/2018
dmi.bios.vendor: Insyde
dmi.bios.version: F.49
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: 80DD
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 64.43
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnInsyde:bvrF.49:bd03/02/2018:svnHewlett-Packard:pnHPENVYNotebook:pvrType1ProductConfigId:rvnHewlett-Packard:rn80DD:rvr64.43:cvnHewlett-Packard:ct10:cvrChassisVersion:
dmi.product.family: 103C_5335KV G=N L=CON B=HP S=ENV
dmi.product.name: HP ENVY Notebook
dmi.product.version: Type1ProductConfigId
dmi.sys.vendor: Hewlett-Packard