Bug 509216

Summary: Pulseaudio skips, uses large amount of cpu time with a2dp output
Product: [Fedora] Fedora Reporter: Jeremy Fitzhardinge <jeremy>
Component: pulseaudioAssignee: Lennart Poettering <lpoetter>
Status: CLOSED RAWHIDE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: 11CC: lkundrak, lpoetter, wtogami
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Hardware: x86_64   
OS: Linux   
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Last Closed: 2009-07-31 00:16:39 UTC Type: ---
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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.