I built a package with the bluetooth firmware files from the bug updated
from the tip of linux-firmware. Can you please give this a try and
confirm it fixes your issue? Thanks!

http://people.canonical.com/~sforshee/lp1756824/linux-
firmware_1.173.3+lp1756824v201902081042_all.deb

** Changed in: linux-firmware (Ubuntu)
   Importance: Undecided => Medium

** Changed in: linux-firmware (Ubuntu)
       Status: Confirmed => Incomplete

** Changed in: linux-firmware (Ubuntu)
     Assignee: (unassigned) => Seth Forshee (sforshee)

** Also affects: linux-firmware (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Changed in: linux-firmware (Ubuntu Bionic)
   Importance: Undecided => Medium

** Changed in: linux-firmware (Ubuntu Bionic)
       Status: New => Incomplete

** Changed in: linux-firmware (Ubuntu Bionic)
     Assignee: (unassigned) => Seth Forshee (sforshee)

** Changed in: linux-firmware (Ubuntu)
       Status: Incomplete => Fix Released

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-firmware in Ubuntu.
https://bugs.launchpad.net/bugs/1756824

Title:
  Intel wifi bluetooth coexistence issue in 18.04

Status in linux-firmware package in Ubuntu:
  Fix Released
Status in linux-firmware source package in Bionic:
  Incomplete

Bug description:
  (Intel wifi/bluetooth 8260 and 8265)

  Bluetooth does not work (bluetooth keyboard and mouse do not connect)
  when wifi enabled.

  Upstream bug seems to be fixing this, copying intel firmware from this bug 
fixes the issue:
  https://bugzilla.kernel.org/show_bug.cgi?id=197147

  Ubuntu firmware package update from last couple of days still comes
  with broken intel firmware.

  Other way to get bluetooth working with intel firmware from ubuntu
  package is to add following parameter in modprobe:

  options iwlwifi bt_coex_active=0
  to /etc/modprobe-d/iwlwifi.conf
  --- 
  ApportVersion: 2.20.8-0ubuntu10
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Dependencies:
   
  DistroRelease: Ubuntu 18.04
  InstallationDate: Installed on 2014-10-24 (1241 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  NonfreeKernelModules: wl
  Package: linux-firmware 1.173 [modified: lib/firmware/intel/ibt-12-16.ddc 
lib/firmware/intel/ibt-12-16.sfi]
  PackageArchitecture: all
  ProcVersionSignature: Ubuntu 4.15.0-12.13-generic 4.15.7
  Tags:  bionic wayland-session
  Uname: Linux 4.15.0-12-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip kvm libvirt lpadmin lxd netdev plugdev sambashare 
sudo vboxusers
  _MarkForUpload: True

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