Public bug reported: By default BT audio works fine on Ubuntu - if there is no WiFi active: Both work on the same frequency range, 2 WiFi channel is about 20 Bluetooth Channels wide and every time a WiFi package is sent bluetooth risks a packet loss.
Creating a file named /etc/modprobe.d/bluetooth-audio.conf with the following content: options ath9k btcoex_enable=1 bt_ant_diversity=1 resolves the problem and drastically increases bluetooth throughput for all other use cases (bluetooth networking that doesn't drop every time the WiFi probes something, lower latency Bluetooth HIDs. We should ship things in a way that they work out-of-the-box => I am all for providing this file with Ubuntu, possibly with Bluez. In the case of my laptop btcoex_enable=1 would already do the trick. Technical background: - https://wireless.wiki.kernel.org/en/users/drivers/ath9k/btcoex - https://wiki.freebsd.org/dev/ath_hal(4)/AntennaDiversity ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: bluez 5.46-0ubuntu4 Uname: Linux 4.15.0-041500rc9-lowlatency x86_64 ApportVersion: 2.20.8-0ubuntu6 Architecture: amd64 CurrentDesktop: GNOME Date: Tue Jan 30 06:40:12 2018 EcryptfsInUse: Yes InterestingModules: rfcomm bnep btusb bluetooth MachineType: Acer Aspire S7-391 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=de_DE.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-4.15.0-041500rc9-lowlatency root=UUID=6d0fd0ad-9048-4fdb-881a-eba6d6d13c3b ro rootflags=subvol=@ acpi_backlight=vendor init=/lib/systemd/systemd intel_pstate=enable nmi_watchdog=0 quiet splash acpi_backlight=vendor init=/lib/systemd/systemd intel_pstate=enable video=vesafb:ywrap,mtrr=3 nmi_watchdog=0 vt.handoff=1 SourcePackage: bluez UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/16/2012 dmi.bios.vendor: Insyde Corp. dmi.bios.version: V2.09 dmi.board.asset.tag: No Asset Tag dmi.board.name: Storm dmi.board.vendor: Acer dmi.board.version: V2.09 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: V2.09 dmi.modalias: dmi:bvnInsydeCorp.:bvrV2.09:bd11/16/2012:svnAcer:pnAspireS7-391:pvrV2.09:rvnAcer:rnStorm:rvrV2.09:cvnAcer:ct10:cvrV2.09: dmi.product.family: ChiefRiver System dmi.product.name: Aspire S7-391 dmi.product.version: V2.09 dmi.sys.vendor: Acer hciconfig: hci0: Type: Primary Bus: USB BD Address: 68:94:23:49:1B:BC ACL MTU: 1022:8 SCO MTU: 183:5 UP RUNNING PSCAN RX bytes:688 acl:0 sco:0 events:49 errors:0 TX bytes:3167 acl:0 sco:0 commands:49 errors:0 ** Affects: bluez (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug bionic wayland-session -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1746164 Title: Enable Bluetooth-Wifi coexistence by default [bluetooth audio and network skip on Wifi activity] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1746164/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
