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[Bug 816638] Re: Pulseaudio consumes 100% of the cpu when trying to play a sound with natty's linaro LEB and 3.0.0-1402-linaro-lt-omap

To: linaro-release@xxxxxxxxxxxxxxxxxxx
From: Feng Wei <816638@xxxxxxxxxxxxxxxxxx>
Date: Wed, 14 Sep 2011 02:16:03 -0000
Reply-to: Bug 816638 <816638@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Seems to be fixed in 1109 release, see
https://bugs.launchpad.net/ubuntu/+source/alsa-lib/+bug/746023

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https://bugs.launchpad.net/bugs/816638

Title:
  Pulseaudio consumes 100% of the cpu when trying to play a sound with
  natty's linaro LEB and 3.0.0-1402-linaro-lt-omap

Status in Linaro Ubuntu Evaluation Builds:
  Confirmed

Bug description:
  Once gdm starts with the user session, pulseaudio will start and
  consume 100% of the CPU, letting the desktop unusable.

  Linking /bin/true to /usr/bin/pulseaudio makes the system usable
  again.

  Hwpack: hwpack_linaro-lt-panda-x11-base_20110726-1_armel_supported.tar.gz
  Image: linaro-n-ubuntu-desktop-tar-20110726-1.tar.gz
  Kernel: linux-image-3.0.0-1402-linaro-lt-omap 3.0.0-1402.3~ppa~natty

  Another thing is that the serial gets flooded by like:
  [   37.145355]  SDP4430 Media: scan for new SDP4430 Media playback streams
  [   37.154266] aess aess: check playback path from MM_DL_LP to PDM_DL1
  [   37.161010] aess aess:  1:try source MM_DL_LP path (null) to MM_DL VMixer len 0 connect 1
  [   37.170166] aess aess:  1:try source MM_DL_LP path (null) to MM_DL VMixer len 0 connect 1
  [   37.179229] aess aess:  1:try source MM_DL_LP path (null) to MM_DL VMixer len 0 connect 1
  [   37.188415] aess aess:  1:try source MM_DL_LP path (null) to MM_DL VMixer len 0 connect 1
  [   37.197265]  SDP4430 Media:  scanned playback paths BE PDM_DL1 for stream HS Playback num 0
  [   37.205993] aess aess: check playback path from MM_DL_LP to PDM_DL2
  [   37.212829] aess aess:  1:try source MM_DL_LP path (null) to MM_DL VMixer len 0 connect 1
  [   37.221618] aess aess:  1:try source MM_DL_LP path (null) to MM_DL VMixer len 0 connect 1
  [   37.227081] aess aess:  1:try source MM_DL_LP path (null) to MM_DL VMixer len 0 connect 1
  [   37.239715] aess aess:  1:try source MM_DL_LP path (null) to MM_DL VMixer len 0 connect 1
  [   37.248565]  SDP4430 Media:  scanned playback paths BE PDM_DL2 for stream HF Playback num 0
  [   37.257324] aess aess: check playback path from MM_DL_LP to BT_VX_DL
  [   37.264343] aess aess:  1:try source MM_DL_LP path (null) to MM_DL VMixer len 0 connect 1
  [   37.272979] aess aess:  1:try source MM_DL_LP path (null) to MM_DL VMixer len 0 connect 1
  [   37.282073] aess aess:  1:try source MM_DL_LP path (null) to MM_DL VMixer len 0 connect 1
  [   37.290802] aess aess:  1:try source MM_DL_LP path (null) to MM_DL VMixer len 0 connect 1
  [   37.299530]  SDP4430 Media:  scanned playback paths BE BT_VX_DL for stream BT num 0
  [   37.303649] aess aess: check playback path from MM_DL_LP to MM_EXT_DL
  [   37.314636] aess aess:  1:try source MM_DL_LP path (null) to MM_DL VMixer len 0 connect 1
  [   37.320831] aess aess:  1:try source MM_DL_LP path (null) to MM_DL VMixer len 0 connect 1
  [   37.332031] aess aess:  1:try source MM_DL_LP path (null) to MM_DL VMixer len 0 connect 1
  [   37.340667] aess aess:  1:try source MM_DL_LP path (null) to MM_DL VMixer len 0 connect 1
  [   37.349456]  SDP4430 Media:  scanned playback paths BE MM_EXT_DL for stream FM num 0
  [   37.357635]  SDP4430 Media: asoc: SDP4430 Media no valid playback route from source to sink
  [   37.366760]  SDP4430 Media: dsp: open FE SDP4430 Media
  [   37.372528] omap-abe-dai omap-abe-dai: omap_abe_dai_startup: MultiMedia1
  [   37.379730]  SDP4430 Media: dsp: hw_params FE SDP4430 Media
  [   37.379730] omap-abe-dai omap-abe-dai: omap_abe_dai_hw_params: MultiMedia1
  [   37.393615]  SDP4430 Media: dsp: prepare FE SDP4430 Media
  [   37.399505]  SDP4430 Media: dsp: no backend DAIs enabled for SDP4430 Media
  [   37.406860]  SDP4430 Media: dsp: hw_free FE SDP4430 Media
  [   37.412780] omap-abe-dai omap-abe-dai: omap_abe_dai_hw_free: MultiMedia1
  [   37.419860]  SDP4430 Media: dsp: hw_params FE SDP4430 Media
  [   37.425872] omap-abe-dai omap-abe-dai: omap_abe_dai_hw_params: MultiMedia1
  [   37.433410]  SDP4430 Media: dsp: prepare FE SDP4430 Media
  [   37.439117]  SDP4430 Media: dsp: no backend DAIs enabled for SDP4430 Media
  [   37.446533]  SDP4430 Media: dsp: hw_free FE SDP4430 Media
  [   37.452362] omap-abe-dai omap-abe-dai: omap_abe_dai_hw_free: MultiMedia1
  [   37.459594]  SDP4430 Media: dsp: hw_params FE SDP4430 Media
  [   37.465942] omap-abe-dai omap-abe-dai: omap_abe_dai_hw_params: MultiMedia1
  [   37.473266]  SDP4430 Media: dsp: prepare FE SDP4430 Media
  [   37.477142]  SDP4430 Media: dsp: no backend DAIs enabled for SDP4430 Media
  [   37.486694]  SDP4430 Media: dsp: hw_free FE SDP4430 Media
  [   37.488739] omap-abe-dai omap-abe-dai: omap_abe_dai_hw_free: MultiMedia1
  [   37.499694]  SDP4430 Media: dsp: hw_params FE SDP4430 Media
  [   37.505706] omap-abe-dai omap-abe-dai: omap_abe_dai_hw_params: MultiMedia1
  [   37.513031]  SDP4430 Media: dsp: prepare FE SDP4430 Media
  [   37.518859]  SDP4430 Media: dsp: no backend DAIs enabled for SDP4430 Media
  [   37.526245]  SDP4430 Media: dsp: hw_free FE SDP4430 Media
  [   37.532257] omap-abe-dai omap-abe-dai: omap_abe_dai_hw_free: MultiMedia1
  [   37.532257]  SDP4430 Media: dsp: hw_params FE SDP4430 Media
  [   37.545440] omap-abe-dai omap-abe-dai: omap_abe_dai_hw_params: MultiMedia1
  [   37.552795]  SDP4430 Media: dsp: prepare FE SDP4430 Media
  [   37.558868]  SDP4430 Media: dsp: no backend DAIs enabled for SDP4430 Media
  [   37.566253]  SDP4430 Media: dsp: hw_free FE SDP4430 Media
  [   37.567260] omap-abe-dai omap-abe-dai: omap_abe_dai_hw_free: MultiMedia1
  [   37.579315]  SDP4430 Media: dsp: hw_free FE SDP4430 Media
  [   37.581817] omap-abe-dai omap-abe-dai: omap_abe_dai_hw_free: MultiMedia1
  [   37.592803]  SDP4430 Media: dsp: close FE SDP4430 Media
  [   37.598419] omap-abe-dai omap-abe-dai: omap_abe_dai_shutdown: MultiMedia1
  [   37.606414]  SDP4430 Media: scan for new SDP4430 Media playback streams
  [   37.613616] aess aess: check playback path from MM_DL_LP to PDM_DL1
  [   37.620391] aess aess:  1:try source MM_DL_LP path (null) to MM_DL VMixer len 0 connect 1
  [   37.629211] aess aess:  1:try source MM_DL_LP path (null) to MM_DL VMixer len 0 connect 1
  [   37.637908] aess aess:  1:try source MM_DL_LP path (null) to MM_DL VMixer len 0 connect 1
  [   37.646697] aess aess:  1:try source MM_DL_LP path (null) to MM_DL VMixer len 0 connect 1
  [   37.655700]  SDP4430 Media:  scanned playback paths BE PDM_DL1 for stream HS Playback num 0

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