Thanks Kai-Heng, 
I installed the latest firmware as you described and bluetooth works. 
Please note I didn't uninstall the custom kernel from before. I don't know if 
this matters.

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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gnome-shell in Ubuntu.
https://bugs.launchpad.net/bugs/1832988

Title:
  Intel 8260 Bluetooth not working

Status in gnome-bluetooth package in Ubuntu:
  Invalid
Status in gnome-shell package in Ubuntu:
  Invalid
Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Expected behaviour:
  I can enable bluetooth in the system settings, and pair with my other devices.

  Actual behaviour:
  Always displays as 'off' in the settings dialog, and won't turn on. 

  Bluetooth worked on the same machine with previous Ubuntu releases
  (18.10) & no hardware changes.

  "dmesg | grep -i bluetooth" reports the following:
  ```
  [   14.445902] Bluetooth: Core ver 2.22
  [   14.445918] Bluetooth: HCI device and connection manager initialized
  [   14.445921] Bluetooth: HCI socket layer initialized
  [   14.445923] Bluetooth: L2CAP socket layer initialized
  [   14.445929] Bluetooth: SCO socket layer initialized
  [   14.494345] Bluetooth: hci0: Bootloader revision 0.0 build 2 week 52 2014
  [   14.499050] Bluetooth: hci0: Device revision is 5
  [   14.499052] Bluetooth: hci0: Secure boot is enabled
  [   14.499053] Bluetooth: hci0: OTP lock is enabled
  [   14.499053] Bluetooth: hci0: API lock is enabled
  [   14.499054] Bluetooth: hci0: Debug lock is disabled
  [   14.499055] Bluetooth: hci0: Minimum firmware build 1 week 10 2014
  [   14.503899] Bluetooth: hci0: Found device firmware: intel/ibt-11-5.sfi
  [   14.558347] Bluetooth: hci0: Failed to send firmware data (-38)
  [   15.497805] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
  [   15.497806] Bluetooth: BNEP filters: protocol multicast
  [   15.497810] Bluetooth: BNEP socket layer initialized
  ```

  "lsb_release -rd" reports the following:
  ```
  Description:  Ubuntu 19.04
  Release:      19.04
  ```
  "cat /proc/version_signature" reports the following:
  ```
  Ubuntu 5.0.0-16.17-generic 5.0.8
  ```

  "apt-cache policy linux-firmware" reports the following:
  ```
  linux-firmware:
    Installed: 1.178.1
    Candidate: 1.178.1
    Version table:
   *** 1.178.1 500
          500 http://gb.archive.ubuntu.com/ubuntu disco-updates/main amd64 
Packages
          500 http://gb.archive.ubuntu.com/ubuntu disco-updates/main i386 
Packages
          500 http://security.ubuntu.com/ubuntu disco-security/main amd64 
Packages
          500 http://security.ubuntu.com/ubuntu disco-security/main i386 
Packages
          100 /var/lib/dpkg/status
       1.178 500
          500 http://gb.archive.ubuntu.com/ubuntu disco/main amd64 Packages
          500 http://gb.archive.ubuntu.com/ubuntu disco/main i386 Packages
  ```

  ProblemType: Bug
  DistroRelease: Ubuntu 19.04
  Package: linux-image-5.0.0-16-generic 5.0.0-16.17
  ProcVersionSignature: Ubuntu 5.0.0-16.17-generic 5.0.8
  Uname: Linux 5.0.0-16-generic x86_64
  ApportVersion: 2.20.10-0ubuntu27
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  martin     2314 F.... pulseaudio
  CurrentDesktop: ubuntu:GNOME
  Date: Sun Jun 16 12:31:07 2019
  InstallationDate: Installed on 2019-06-02 (13 days ago)
  InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 004: ID 1c7a:0603 LighTuning Technology Inc. 
   Bus 001 Device 003: ID 5986:066d Acer, Inc 
   Bus 001 Device 002: ID 8087:0a2b Intel Corp. 
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: PC Specialist Limited N15_17RD
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.0.0-16-generic 
root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=1
  RelatedPackageVersions:
   linux-restricted-modules-5.0.0-16-generic N/A
   linux-backports-modules-5.0.0-16-generic  N/A
   linux-firmware                            1.178.1
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 12/25/2015
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1.05.11
  dmi.board.asset.tag: Tag 12345
  dmi.board.name: N15_17RD
  dmi.board.vendor: CLEVO
  dmi.board.version: Not Applicable
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: No Enclosure
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr1.05.11:bd12/25/2015:svnPCSpecialistLimited:pnN15_17RD:pvrNotApplicable:rvnCLEVO:rnN15_17RD:rvrNotApplicable:cvnNoEnclosure:ct10:cvrN/A:
  dmi.product.family: Not Applicable
  dmi.product.name: N15_17RD
  dmi.product.sku: Not Applicable
  dmi.product.version: Not Applicable
  dmi.sys.vendor: PC Specialist Limited

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