Nope, if anything, it's even worse. On Indri, the PC audio doesn't even get streamed over SCO at all -- the media channel just gets disconnected when Bluez times out in the middle of an AVDTP SET_CONFIGURATION. Here, as before, both headset and Bluez are jockeying for first to connect/setup A2DP and the headset isn't handling this contest well. At the end of the whole thing, the headset just disconnects and the PC audio plays through the internal speakers.
Bluez needs to wait for the designated 2s already in its code, before attempting to connect any profiles it suspects the other side failed to connect. I've attached snoop and syslogs taken during the Indri test. There should be more than enough data here already for someone to check this out, especially with the explanation offered in earlier comments. ** Attachment added: "Syslog taken when the headset initiates the connection on Impish Indri" https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1941977/+attachment/5522606/+files/syslog_HeadsetInitiated_Indri -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1941977 Title: PC streams music over low-quality HFP/SCO connection, instead of A2DP/AVDTP Status in pulseaudio package in Ubuntu: Incomplete Bug description: This issue was first discovered when I got this headset 2 years back: https://www.amazon.co.uk/gp/product/B01C2QCPYI. STEPS * Enable Bluetooth on the PC * Have music or some video playing on the PC * Power on the (already-paired) headset. It automatically connects to the PC. EXPECTED RESULT The PC's audio should now be streamed to the headset, over high-quality A2DP ACTUAL RESULT The PC's audio gets streamed over the low-quality HFP/SCO connection instead. Stopping and resuming the stream changes nothing. I have to manually open Blueman and right-click on the device and select "High-quality A2DP profile", for it to switch to the expected high-quality A2DP transport. HCI snoop logs and verbose bluetoothd-syslogs taken in both headset- initiated and PC-initiated connections are attached. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: bluez 5.53-0ubuntu3.3 [modified: lib/systemd/system/bluetooth.service] ProcVersionSignature: Ubuntu 5.4.0-74.83-generic 5.4.114 Uname: Linux 5.4.0-74-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.18 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Sun Aug 29 03:49:08 2021 InstallationDate: Installed on 2019-06-08 (812 days ago) InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416) InterestingModules: rfcomm bnep btusb bluetooth MachineType: Dell Inc. XPS 13 9380 ProcEnviron: LANGUAGE=en_GB:en PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_GB.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-74-generic root=UUID=93dae559-0f0d-4e36-9318-ee7154840a9f ro resume=UUID=01c18f00-e0eb-4891-9bf1-3110416d9b39 quiet splash mem_sleep_default=deep vt.handoff=7 SourcePackage: bluez UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/14/2020 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.12.1 dmi.board.name: 0KTW76 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.12.1:bd12/14/2020:svnDellInc.:pnXPS139380:pvr:rvnDellInc.:rn0KTW76:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: XPS dmi.product.name: XPS 13 9380 dmi.product.sku: 08AF dmi.sys.vendor: Dell Inc. hciconfig: hci0: Type: Primary Bus: USB BD Address: 9C:B6:D0:99:1D:20 ACL MTU: 1024:8 SCO MTU: 50:8 UP RUNNING PSCAN RX bytes:3313120 acl:776 sco:26275 events:305102 errors:0 TX bytes:255208317 acl:298108 sco:22053 commands:6779 errors:0 mtime.conffile..etc.bluetooth.main.conf: 2020-04-27T23:21:52.866445 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1941977/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
