Comment 0 for bug 1773635

I have an Atheros mixed WiFi+Bluetooth device which worked nice on a kernels prior to 4.4.0-127
But unfortunately after last upgrade (from 4.4.0-124 to 4.4.0-127) bluetooth is unable to start - no bluetooth indicator appears in notifications tray and no device could be discovered or connected to via bluetooth.

Tailing a syslog provides a following lines, related to bluetooth:
May 27 12:15:16 K43T kernel: [ 228.102799] usbcore: registered new interface driver btusb
May 27 12:15:16 K43T kernel: [ 228.109562] Bluetooth: hci0: don't support firmware rome 0x1020200
May 27 12:15:16 K43T systemd-udevd[4634]: Process '/bin/hciconfig hci0 up' failed with exit code 1.
May 27 12:15:16 K43T kernel: [ 228.112017] Bluetooth: hci0: don't support firmware rome 0x1020200

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-127-generic 4.4.0-127.153
ProcVersionSignature: Ubuntu 4.4.0-127.153-generic 4.4.128
Uname: Linux 4.4.0-127-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.17
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: insanedeveloper 1937 F.... pulseaudio
 /dev/snd/controlC0: insanedeveloper 1937 F.... pulseaudio
CurrentDesktop: Unity
Date: Sun May 27 12:33:42 2018
HibernationDevice: RESUME=UUID=4a7e8ac6-783b-4a23-bfa9-8130cfef7945
InstallationDate: Installed on 2015-11-28 (910 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
MachineType: ASUSTeK Computer Inc. K43TK
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-127-generic.efi.signed root=UUID=7dbd7b42-e67f-4416-8f6d-6c918e744fb7 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-127-generic N/A
 linux-backports-modules-4.4.0-127-generic N/A
 linux-firmware 1.157.18
SourcePackage: linux
UpgradeStatus: Upgraded to xenial on 2017-01-08 (503 days ago)
dmi.bios.date: 03/20/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 206
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: K43TK
dmi.board.vendor: ASUSTeK Computer Inc.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer Inc.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr206:bd03/20/2012:svnASUSTeKComputerInc.:pnK43TK:pvr1.0:rvnASUSTeKComputerInc.:rnK43TK:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0:
dmi.product.name: K43TK
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK Computer Inc.