> On Feb 2, 2018, at 10:05 AM, Daniel van Vugt <daniel.van.v...@canonical.com> > wrote: > > It sounds like maybe @peterpall isn't doing what @kaihengfeng asked: > > btcoex_enable=0 bt_ant_diversity=1 > > But at the same time it also sounds like @kaihengfeng is trying to solve > the wrong problem, judging by comment #20. Actually it sounds like the > fix @peterpall needs is just:
Judging from the comment, bt_ant_diversity is what we want, to let WiFi use two antennas when BT is off. > > btcoex_enable=1 IIUC, this will let WiFi uses single antenna all the time. Not something user really want. > > Which is what the title of the bug says too :) > > -- > You received this bug notification because you are subscribed to linux > in Ubuntu. > https://bugs.launchpad.net/bugs/1746164 > > Title: > [ath9k] Enable Bluetooth-Wifi coexistence by default (bluetooth audio > and network skip on Wifi activity) > > Status in linux package in Ubuntu: > Confirmed > > Bug description: > 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 > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1746164/+subscriptions -- 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: [ath9k] 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/linux/+bug/1746164/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
