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
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.