kernel-packages team mailing list archive

[Konrad Zapałowicz <konrad.zapalowicz@xxxxxxxxxxxxx>]

This is reported against an old version of Ubuntu and many things has
changed since then. Because of that we won't fix this issue however if
this behavior repeats on a modern version please fill a bug report
against it and we will take it from there.

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https://bugs.launchpad.net/bugs/1419186

Title:
  bluetooth doesn't recover well from interruption

Status in bluez package in Ubuntu:
  New

Bug description:
  logged in using twm, i used blueman to pair my bose soundlink iii and
  set it as audio sink, and pair my plantronics 8xx and set it as
  headset service.  i'm using mplayer to play radio via alsa
  /etc/asound.conf defined pcm to the bose.  i've opened linphone merely
  to test if it will work.  it's default settings are "ALSA: default
  device".  pulseaudio is installed but not being used iiuc.  i click on
  linphone's "play" button to test the ring sound.  the ring sound does
  arrive onto the plantronics 8xx, albeit with the first fraction of a
  second missing, but so far no complaint.

  immediately thereafter, a series of skips is heard in the bose audio,
  spanning several seconds.

  now i'm no expert regarding bluetooth bandwidth or other bluetooth
  limitations, but what i hear is poor recovery from an interruption.
  the test ring sound was less than two seconds, so it's not like there
  were several seconds of overlapping audio.  even if bluetooth
  bandwidth is so narrow as to not accomodate the two parallel channels,
  should it really take several seconds of numerous dropouts before the
  audio stream settles again?

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: bluez-alsa 4.101-0ubuntu22
  ProcVersionSignature: Ubuntu 3.18.0-11.12-generic 3.18.3
  Uname: Linux 3.18.0-11-generic i686
  ApportVersion: 2.15.1-0ubuntu4
  Architecture: i386
  Date: Fri Feb  6 17:13:08 2015
  InstallationDate: Installed on 2015-01-16 (21 days ago)
  InstallationMedia: Lubuntu 15.04 "Vivid Vervet" - Alpha i386 (20150114)
  InterestingModules: bnep rfcomm btusb bluetooth
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz ro root=UUID=5116dd42-c618-49a4-885e-84c697b53abd panic=30
  SourcePackage: bluez
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/09/2008
  dmi.bios.vendor: Phoenix Technologies, LTD
  dmi.bios.version: 6.00 PG
  dmi.board.name: K8M800-8237
  dmi.chassis.type: 3
  dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr6.00PG:bd01/09/2008:svn:pn:pvr:rvn:rnK8M800-8237:rvr:cvn:ct3:cvr:
  hciconfig:
   hci0:	Type: BR/EDR  Bus: USB
   	BD Address: 00:15:83:6A:58:96  ACL MTU: 310:10  SCO MTU: 64:8
   	UP RUNNING PSCAN 
   	RX bytes:3226118 acl:43 sco:6565 events:405902 errors:0
   	TX bytes:196839358 acl:683492 sco:6529 commands:24015 errors:7
  rfkill:
   0: hci0: Bluetooth
   	Soft blocked: no
   	Hard blocked: no

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