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[Raymond <1315212@xxxxxxxxxxxxxxxxxx>]

for unknown reason which pulseaudio did not probe surround40


pulseaudio still using timer base scheduling in your last log

but it was strange tradtional mode was used in your first log


20:25:49 homecomp pulseaudio[11971]: [pulseaudio] sink.c:     alsa.name = "CA0106"
Jan 02 20:25:49 homecomp pulseaudio[11971]: [pulseaudio] sink.c:     alsa.id = "ca0106"
Jan 02 20:25:49 homecomp pulseaudio[11971]: [pulseaudio] sink.c:     alsa.subdevice = "0"
Jan 02 20:25:49 homecomp pulseaudio[11971]: [pulseaudio] sink.c:     alsa.subdevice_name = "subdevice #0"
Jan 02 20:25:49 homecomp pulseaudio[11971]: [pulseaudio] sink.c:     alsa.device = "0"
Jan 02 20:25:49 homecomp pulseaudio[11971]: [pulseaudio] sink.c:     alsa.card = "0"
Jan 02 20:25:49 homecomp pulseaudio[11971]: [pulseaudio] sink.c:     alsa.card_name = "CA0106"
Jan 02 20:25:49 homecomp pulseaudio[11971]: [pulseaudio] sink.c:     alsa.long_card_name = "Live! 7.1 24bit [SB0410] at 0xcf00 irq 19"
Jan 02 20:25:49 homecomp pulseaudio[11971]: [pulseaudio] sink.c:     alsa.driver_name = "snd_ca0106"
Jan 02 20:25:49 homecomp pulseaudio[11971]: [pulseaudio] sink.c:     device.bus_path = "pci-0000:06:00.0"
Jan 02 20:25:49 homecomp pulseaudio[11971]: [pulseaudio] sink.c:     sysfs.path = "/devices/pci0000:00/0000:00:1c.3/0000:05:00.0/0000:06:00.0/sound/card0"
Jan 02 20:25:49 homecomp pulseaudio[11971]: [pulseaudio] sink.c:     device.bus = "pci"
Jan 02 20:25:49 homecomp pulseaudio[11971]: [pulseaudio] sink.c:     device.vendor.id = "1102"
Jan 02 20:25:49 homecomp pulseaudio[11971]: [pulseaudio] sink.c:     device.vendor.name = "Creative Labs"
Jan 02 20:25:49 homecomp pulseaudio[11971]: [pulseaudio] sink.c:     device.product.id = "0007"
Jan 02 20:25:49 homecomp pulseaudio[11971]: [pulseaudio] sink.c:     device.product.name = "CA0106 Soundblaster (SB0410 SBLive! 24-bit)"
Jan 02 20:25:49 homecomp pulseaudio[11971]: [pulseaudio] sink.c:     device.string = "front:0"
Jan 02 20:25:49 homecomp pulseaudio[11971]: [pulseaudio] sink.c:     device.buffering.buffer_size = "65536"
Jan 02 20:25:49 homecomp pulseaudio[11971]: [pulseaudio] sink.c:     device.buffering.fragment_size = "32768"
Jan 02 20:25:49 homecomp pulseaudio[11971]: [pulseaudio] sink.c:     device.access_mode = "mmap+timer"
Jan 02 20:25:49 homecomp pulseaudio[11971]: [pulseaudio] sink.c:     device.profile.name = "analog-stereo"






Dec 25 19:33:27 homecomp pulseaudio[1911]:     module-stream-restore.id = "sink-input-by-application-name:paplay"
Dec 25 19:33:27 homecomp pulseaudio[1911]: Requested tlength=2000.00 ms, minreq=20.00 ms
Dec 25 19:33:27 homecomp pulseaudio[1911]: Traditional mode enabled, modifying sink usec only for compat with minreq.
Dec 25 19:33:27 homecomp pulseaudio[1911]: Requested latency=1960.00 ms, Received latency=341.33 ms
Dec 25 19:33:27 homecomp pulseaudio[1911]: memblockq requested: maxlength=4194304, tlength=192000, base=2, prebuf=190082, minreq=1920 maxrewind=0
Dec 25 19:33:27 homecomp pulseaudio[1911]: memblockq sanitized: maxlength=4194304, tlength=192000, base=2, prebuf=190082, minreq=1920 maxrewind=0
Dec 25 19:33:27 homecomp pulseaudio[1911]: Final latency 2341.33 ms = 1960.00 ms + 2*20.00 ms + 341.33 ms
Dec 25 19:33:27 homecomp pulseaudio[1911]: Latency set to 26.00ms
Dec 25 19:33:27 homecomp pulseaudio[1911]: hwbuf_unused=60544
Dec 25 19:33:27 homecomp pulseaudio[1911]: setting avail_min=15617


the driver need to provide accurate hw_ptr  position in order to set hwbuf_unused to non zero

the actual buffer used = buffer size (65536) - hwbuf_unused (60544) is
5012 bytes

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Packages, which is subscribed to alsa-driver in Ubuntu.
https://bugs.launchpad.net/bugs/1315212

Title:
  [CA0106 - CA0106, playback] Playback problem - Surround dies, no valid
  output

Status in ALSA driver:
  Confirmed
Status in alsa-driver package in Ubuntu:
  Incomplete

Bug description:
  This is tested against a Creative Labs Sounblaster live! (sb0410) card
  and a SoundBlaster Audigy se (sb0570). Both of them behave strangely,
  output coming through some, but not all speakers, etc. This was
  working in 13.10 under the sb0410. the ca0106 driver is the same for
  both cards.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu4
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic i686
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  joshp     30385 F.... pulseaudio
   /dev/snd/controlC0:  joshp     30385 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Thu May  1 21:37:12 2014
  InstallationDate: Installed on 2014-04-28 (3 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140417)
  PackageArchitecture: all
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_AlsaPlaybackTest: ALSA playback test through plughw:CA0106 failed
  Symptom_Card: Built-in Audio - Intel ICH6
  Symptom_Type: None of the above
  Title: [CA0106 - CA0106, playback] Playback problem
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/03/2006
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A08
  dmi.board.name: 0G8310
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 3
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA08:bd03/03/2006:svnDellInc.:pnOptiPlexGX280:pvr:rvnDellInc.:rn0G8310:rvr:cvnDellInc.:ct3:cvr:
  dmi.product.name: OptiPlex GX280
  dmi.sys.vendor: Dell Inc.

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