| Summary: |
BlueZ5 module fails to clean out card after headset disconnects |
| Product: |
PulseAudio
|
Reporter: |
juha.kuikka |
| Component: |
modules | Assignee: |
pulseaudio-bugs |
| Status: |
RESOLVED
FIXED
|
QA Contact: |
pulseaudio-bugs |
| Severity: |
normal
|
|
|
| Priority: |
medium
|
CC: |
lennart
|
| Version: |
unspecified | |
|
| Hardware: |
All | |
|
| OS: |
Linux (All) | |
|
| Whiteboard: |
|
|
i915 platform:
|
|
i915 features:
|
|
|---|
| Attachments: |
Patch to fix the issue
|
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Created attachment 122981 [details] Patch to fix the issue SW: Pulseaudio 8.0 / BlueZ 5.39 Symptoms: While disconnecting/reconnecting a paired bluetooth headset (LG HBS750) audio fails roughly on every other connection. On a failed connection "pactl list cards" shows the bluetooth device's card but "Active Profile: off". Issuing "pacmd set-card-profile X a2dp_sink" makes audio work immediately. I realized that when this happened, the previous disconnection did not remove the card, instead it was only configured for "Active Profile: off" but otherwise left in place. Upon looking at PA debug logs I saw that the transport for the a2dp_sink was first set into disconnected state and then into idle state. In "device_connection_changed_cb()" this causes the "pa_bluetooth_device_any_transport_connected()" return true and the module-bluez5-device is not unloaded. Further investigation shows that this is caused by a race of module-bluez5-device.c:thread_func() and MediaPoint1::ClearConfiguration(): When the FD in thread_func() is closed (POLLHUP) an BLUETOOTH_MESSAGE_STREAM_FD_HUP message is sent into the main thread. The handler of this message unconditionally sets the transport into IDLE state. This is a problem if it has already been set into DISCONNECTED state. See attached patch for a fix.