Bug 509216

Summary:	Pulseaudio skips, uses large amount of cpu time with a2dp output
Product:	[Fedora] Fedora	Reporter:	Jeremy Fitzhardinge <jeremy>
Component:	pulseaudio	Assignee:	Lennart Poettering <lpoetter>
Status:	CLOSED RAWHIDE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	low
Version:	11	CC:	lkundrak, lpoetter, wtogami
Target Milestone:	---
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2009-07-31 00:16:39 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Jeremy Fitzhardinge 2009-07-01 19:20:50 UTC

Description of problem:
When playing via a2dp bluetooth headphones, the audio output is very choppy and pulseaudio uses ~30-80% of the cpu.

Version-Release number of selected component (if applicable):
pulseaudio-0.9.15-14.fc11.x86_64

How reproducible:
Always

Steps to Reproduce:
1. Select a2dp output
2. Start playing music in banshee
3.
  
Actual results:
Music starts, but soon becomes very choppy.  Pulseaudio uses lots of CPU.

Expected results:
Music playing cleanly.

Additional info:
If I start pulseaudio without --no-cpu-limit it dies quickly with:
Jul  1 11:32:39 abulafia pulseaudio[12365]: cpulimit.c: Received request to terminate due to CPU overload.

With --no-cpu-limit, it keeps going.

Playing lower-bitrate audio, like youtube videos, plays fine, with no dropouts.

I'm using Sony DR-BT22A headphones.

I use a bluetooth mouse with no problems, so I think that rules out any low-level bluetooth problem.

Comment 1 Lennart Poettering 2009-07-31 00:16:39 UTC

Some A2DP headsets have issues with flow control. PA in rawhide should deal with those headsets better. Feel free to reopen if the problem is not fixed in rawhide.