Bug 509216 - Pulseaudio skips, uses large amount of cpu time with a2dp output
Pulseaudio skips, uses large amount of cpu time with a2dp output
Product: Fedora
Classification: Fedora
Component: pulseaudio (Show other bugs)
x86_64 Linux
low Severity medium
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Assigned To: Lennart Poettering
Fedora Extras Quality Assurance
Depends On:
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Reported: 2009-07-01 15:20 EDT by Jeremy Fitzhardinge
Modified: 2009-07-30 20:16 EDT (History)
3 users (show)

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Doc Type: Bug Fix
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Last Closed: 2009-07-30 20:16:39 EDT
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Description Jeremy Fitzhardinge 2009-07-01 15:20:50 EDT
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):

How reproducible:

Steps to Reproduce:
1. Select a2dp output
2. Start playing music in banshee
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 2009-07-30 20:16:39 EDT
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.

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