Public bug reported:

When connecting the Bose QC35 ii, the bluetooth audio works just fine
initially, but the microphone does not. When I go to the sound settings
and change the mic input to use the QC35 ii bluetooth input, the audio
changes from stereo to mono and sounds terrible and cannot understand
anything. Also the mic picks up some input, but the result output sounds
about the same, completely un-understandable, a stuttering digitized
version of the input.

> lsb_release -rd
Description:    Ubuntu 20.10
Release:        20.10

Linux dan-xps-9700 5.10.5-051005-generic #202101061537 SMP Wed Jan 6
15:43:53 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

3. I expected the microphone input and headset output to both work 
simultaneously via bluetooth.
4. Only the headset output worked well, when enabling microphone both sounded 
terrible (unusable).

ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package: bluez 5.55-0ubuntu1.1
Uname: Linux 5.10.5-051005-generic x86_64
ApportVersion: 2.20.11-0ubuntu50.3
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Wed Jan 27 17:53:00 2021
InstallationDate: Installed on 2021-01-06 (21 days ago)
InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022)
InterestingModules: rfcomm bnep bluetooth
MachineType: Dell Inc. XPS 17 9700
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.10.5-051005-generic 
root=UUID=d87c0f2c-adf4-493f-95dc-e2df02f584b3 ro quiet splash vt.handoff=7
SourcePackage: bluez
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/03/2020
dmi.bios.release: 1.4
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.4.0
dmi.board.name: 03CPGC
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: 
dmi:bvnDellInc.:bvr1.4.0:bd09/03/2020:br1.4:svnDellInc.:pnXPS179700:pvr:rvnDellInc.:rn03CPGC:rvrA00:cvnDellInc.:ct10:cvr:
dmi.product.family: XPS
dmi.product.name: XPS 17 9700
dmi.product.sku: 098F
dmi.sys.vendor: Dell Inc.
hciconfig:
 hci0:  Type: Primary  Bus: UART
        BD Address: 28:C2:1F:87:52:EC  ACL MTU: 1024:8  SCO MTU: 240:4
        UP RUNNING PSCAN 
        RX bytes:1599 acl:0 sco:0 events:91 errors:0
        TX bytes:198368 acl:0 sco:0 commands:849 errors:0
mtime.conffile..etc.bluetooth.main.conf: 2021-01-27T17:24:11.108718

** Affects: bluez (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug groovy

** Summary changed:

- Bluetooth input doesn't work w/ Bose QC36 ii
+ Bluetooth input doesn't work w/ Bose QC35 ii

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to bluez in Ubuntu.
https://bugs.launchpad.net/bugs/1913499

Title:
  Bluetooth input doesn't work w/ Bose QC35 ii

Status in bluez package in Ubuntu:
  New

Bug description:
  When connecting the Bose QC35 ii, the bluetooth audio works just fine
  initially, but the microphone does not. When I go to the sound
  settings and change the mic input to use the QC35 ii bluetooth input,
  the audio changes from stereo to mono and sounds terrible and cannot
  understand anything. Also the mic picks up some input, but the result
  output sounds about the same, completely un-understandable, a
  stuttering digitized version of the input.

  > lsb_release -rd
  Description:  Ubuntu 20.10
  Release:      20.10

  Linux dan-xps-9700 5.10.5-051005-generic #202101061537 SMP Wed Jan 6
  15:43:53 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

  3. I expected the microphone input and headset output to both work 
simultaneously via bluetooth.
  4. Only the headset output worked well, when enabling microphone both sounded 
terrible (unusable).

  ProblemType: Bug
  DistroRelease: Ubuntu 20.10
  Package: bluez 5.55-0ubuntu1.1
  Uname: Linux 5.10.5-051005-generic x86_64
  ApportVersion: 2.20.11-0ubuntu50.3
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Jan 27 17:53:00 2021
  InstallationDate: Installed on 2021-01-06 (21 days ago)
  InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022)
  InterestingModules: rfcomm bnep bluetooth
  MachineType: Dell Inc. XPS 17 9700
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.10.5-051005-generic 
root=UUID=d87c0f2c-adf4-493f-95dc-e2df02f584b3 ro quiet splash vt.handoff=7
  SourcePackage: bluez
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/03/2020
  dmi.bios.release: 1.4
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.4.0
  dmi.board.name: 03CPGC
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 10
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvr1.4.0:bd09/03/2020:br1.4:svnDellInc.:pnXPS179700:pvr:rvnDellInc.:rn03CPGC:rvrA00:cvnDellInc.:ct10:cvr:
  dmi.product.family: XPS
  dmi.product.name: XPS 17 9700
  dmi.product.sku: 098F
  dmi.sys.vendor: Dell Inc.
  hciconfig:
   hci0:        Type: Primary  Bus: UART
        BD Address: 28:C2:1F:87:52:EC  ACL MTU: 1024:8  SCO MTU: 240:4
        UP RUNNING PSCAN 
        RX bytes:1599 acl:0 sco:0 events:91 errors:0
        TX bytes:198368 acl:0 sco:0 commands:849 errors:0
  mtime.conffile..etc.bluetooth.main.conf: 2021-01-27T17:24:11.108718

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