[Bug 1818341] [NEW] bluetooth discovery not working

Public bug reported:

audio quality on my new bluetooth headphones was not ok, so I did the
following

sudo apt install git build-essential dkms
git clone https://github.com/jeremyb31/newbtfix-4.15.git
sudo dkms add ./newbtfix-4.15
sudo dkms install btusb/4.0

as suggested here
https://askubuntu.com/questions/1050304/bluetooth-is-not-working-ubuntu-18-04-lts

then the devise discovery was not working anymore and this is what I
have now

$ dmesg | grep Blue
[ 14.403625] Bluetooth: Core ver 2.22
[ 14.403637] Bluetooth: HCI device and connection manager initialized
[ 14.403638] Bluetooth: HCI socket layer initialized
[ 14.403640] Bluetooth: L2CAP socket layer initialized
[ 14.403644] Bluetooth: SCO socket layer initialized
[ 17.432573] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 17.432573] Bluetooth: BNEP filters: protocol multicast
[ 17.432575] Bluetooth: BNEP socket layer initialized

$ lspci | grep Net; lsusb
02:00.0 Network controller: Intel Corporation Wireless 8265 / 8275 (rev 78)
Bus 002 Device 002: ID 413c:81b6 Dell Computer Corp.
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 007: ID 8087:0a2b Intel Corp.
Bus 001 Device 002: ID 0bda:5650 Realtek Semiconductor Corp.
Bus 001 Device 004: ID 0a5c:5834 Broadcom Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

uname -r
4.15.0-45-generic

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-45-generic 4.15.0-45.48
ProcVersionSignature: Ubuntu 4.15.0-45.48-generic 4.15.18
Uname: Linux 4.15.0-45-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: matteo 2872 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Sat Mar 2 16:10:11 2019
HibernationDevice: RESUME=UUID=ab496a2c-42ac-4236-a1ea-1569b35ffacb
InstallationDate: Installed on 2018-08-21 (192 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
MachineType: Dell Inc. Latitude 7490
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-45-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=1
RelatedPackageVersions:
linux-restricted-modules-4.15.0-45-generic N/A
linux-backports-modules-4.15.0-45-generic N/A
linux-firmware 1.173.3
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/24/2018
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.8.0
dmi.board.name: 0KP0FT
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.8.0:bd12/24/2018:svnDellInc.:pnLatitude7490:pvr:rvnDellInc.:rn0KP0FT:rvrA00:cvnDellInc.:ct10:cvr:
dmi.product.family: Latitude
dmi.product.name: Latitude 7490
dmi.sys.vendor: Dell Inc.

** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed


** Tags: amd64 apport-bug bionic wayland-session

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https://bugs.launchpad.net/bugs/1818341

Title:
bluetooth discovery not working

Status in linux package in Ubuntu:
Confirmed

Bug description:
audio quality on my new bluetooth headphones was not ok, so I did the
following

sudo apt install git build-essential dkms
git clone https://github.com/jeremyb31/newbtfix-4.15.git
sudo dkms add ./newbtfix-4.15
sudo dkms install btusb/4.0

as suggested here
https://askubuntu.com/questions/1050304/bluetooth-is-not-working-ubuntu-18-04-lts

then the devise discovery was not working anymore and this is what I
have now

$ dmesg | grep Blue
[ 14.403625] Bluetooth: Core ver 2.22
[ 14.403637] Bluetooth: HCI device and connection manager initialized
[ 14.403638] Bluetooth: HCI socket layer initialized
[ 14.403640] Bluetooth: L2CAP socket layer initialized
[ 14.403644] Bluetooth: SCO socket layer initialized
[ 17.432573] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 17.432573] Bluetooth: BNEP filters: protocol multicast
[ 17.432575] Bluetooth: BNEP socket layer initialized

$ lspci | grep Net; lsusb
02:00.0 Network controller: Intel Corporation Wireless 8265 / 8275 (rev 78)
Bus 002 Device 002: ID 413c:81b6 Dell Computer Corp.
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 007: ID 8087:0a2b Intel Corp.
Bus 001 Device 002: ID 0bda:5650 Realtek Semiconductor Corp.
Bus 001 Device 004: ID 0a5c:5834 Broadcom Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

uname -r
4.15.0-45-generic

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-45-generic 4.15.0-45.48
ProcVersionSignature: Ubuntu 4.15.0-45.48-generic 4.15.18
Uname: Linux 4.15.0-45-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: matteo 2872 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Sat Mar 2 16:10:11 2019
HibernationDevice: RESUME=UUID=ab496a2c-42ac-4236-a1ea-1569b35ffacb
InstallationDate: Installed on 2018-08-21 (192 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
MachineType: Dell Inc. Latitude 7490
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-45-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=1
RelatedPackageVersions:
linux-restricted-modules-4.15.0-45-generic N/A
linux-backports-modules-4.15.0-45-generic N/A
linux-firmware 1.173.3
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/24/2018
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.8.0
dmi.board.name: 0KP0FT
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.8.0:bd12/24/2018:svnDellInc.:pnLatitude7490:pvr:rvnDellInc.:rn0KP0FT:rvrA00:cvnDellInc.:ct10:cvr:
dmi.product.family: Latitude
dmi.product.name: Latitude 7490
dmi.sys.vendor: Dell Inc.

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