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 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. 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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