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Message #93310
[Bug 1315212]
Interesting. I've converted that file to 44100 Hz and now it reveals a
strange behavior. When I play it with buffer size of 64 it sounds like
the pitch is lower than it should be (even if it doesn't overrun though
it does from time to time). When the size is 128 it sounds fine.
# aplay -D plughw:CARD=CA0106 -v --buffer-size=64 /tmp/kde44100.wav
Playing WAVE '/tmp/kde44100.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
Plug PCM: Rate conversion PCM (48000, sformat=S16_LE)
Converter: libspeex (builtin)
Protocol version: 10002
Its setup is:
stream : PLAYBACK
access : RW_INTERLEAVED
format : S16_LE
subformat : STD
channels : 2
rate : 44100
exact rate : 44100 (44100/1)
msbits : 16
buffer_size : 58
period_size : 14
period_time : 333
tstamp_mode : NONE
period_step : 1
avail_min : 14
period_event : 0
start_threshold : 58
stop_threshold : 58
silence_threshold: 0
silence_size : 0
boundary : 4179340454199820288
Slave: Hardware PCM card 0 'CA0106' device 0 subdevice 0
Its setup is:
stream : PLAYBACK
access : MMAP_INTERLEAVED
format : S16_LE
subformat : STD
channels : 2
rate : 48000
exact rate : 48000 (48000/1)
msbits : 16
buffer_size : 64
period_size : 16
period_time : 333
tstamp_mode : NONE
period_step : 1
avail_min : 16
period_event : 0
start_threshold : 64
stop_threshold : 64
silence_threshold: 0
silence_size : 0
boundary : 4611686018427387904
appl_ptr : 0
hw_ptr : 0
underrun!!! (at least 0.116 ms long)
Status:
state : XRUN
trigger_time: 301642.243139271
tstamp : 301642.243254519
delay : 2
avail : 56
avail_max : 56
# aplay -D plughw:CARD=CA0106 -v --buffer-size=128 /tmp/kde44100.wav
Playing WAVE '/tmp/kde44100.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
Plug PCM: Rate conversion PCM (48000, sformat=S16_LE)
Converter: libspeex (builtin)
Protocol version: 10002
Its setup is:
stream : PLAYBACK
access : RW_INTERLEAVED
format : S16_LE
subformat : STD
channels : 2
rate : 44100
exact rate : 44100 (44100/1)
msbits : 16
buffer_size : 117
period_size : 29
period_time : 666
tstamp_mode : NONE
period_step : 1
avail_min : 29
period_event : 0
start_threshold : 117
stop_threshold : 117
silence_threshold: 0
silence_size : 0
boundary : 4215369251218784256
Slave: Hardware PCM card 0 'CA0106' device 0 subdevice 0
Its setup is:
stream : PLAYBACK
access : MMAP_INTERLEAVED
format : S16_LE
subformat : STD
channels : 2
rate : 48000
exact rate : 48000 (48000/1)
msbits : 16
buffer_size : 128
period_size : 32
period_time : 666
tstamp_mode : NONE
period_step : 1
avail_min : 32
period_event : 0
start_threshold : 128
stop_threshold : 128
silence_threshold: 0
silence_size : 0
boundary : 4611686018427387904
appl_ptr : 0
hw_ptr : 0
This pitch (or maybe speed?) weirdness occurs only on playing stereo
files with rate of 44100. I've tried playing music and it indeed sounds
a bit transposed. Bufsize of 128 frames also seems to produce underruns
after some time, my testing clip was too small to reveal it. So it
required bufsize 512 to be played completely without underruns:
# aplay -D plughw:CARD=CA0106 -v --buffer-size=512 /tmp/ksp44100.wav
Playing WAVE '/tmp/ksp44100.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
Plug PCM: Rate conversion PCM (48000, sformat=S16_LE)
Converter: libspeex (builtin)
Protocol version: 10002
Its setup is:
stream : PLAYBACK
access : RW_INTERLEAVED
format : S16_LE
subformat : STD
channels : 2
rate : 44100
exact rate : 44100 (44100/1)
msbits : 16
buffer_size : 529
period_size : 132
period_time : 3000
tstamp_mode : NONE
period_step : 1
avail_min : 132
period_event : 0
start_threshold : 529
stop_threshold : 529
silence_threshold: 0
silence_size : 0
boundary : 4764808405757984768
Slave: Hardware PCM card 0 'CA0106' device 0 subdevice 0
Its setup is:
stream : PLAYBACK
access : MMAP_INTERLEAVED
format : S16_LE
subformat : STD
channels : 2
rate : 48000
exact rate : 48000 (48000/1)
msbits : 16
buffer_size : 576
period_size : 144
period_time : 3000
tstamp_mode : NONE
period_step : 1
avail_min : 144
period_event : 0
start_threshold : 576
stop_threshold : 576
silence_threshold: 0
silence_size : 0
boundary : 5188146770730811392
appl_ptr : 0
hw_ptr : 0
The same song converted to 48000 Hz plays without underruns with buffer
size of 256 frames:
Playing WAVE '/tmp/ksp48000.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo
Plug PCM: Hardware PCM card 0 'CA0106' device 0 subdevice 0
Its setup is:
stream : PLAYBACK
access : RW_INTERLEAVED
format : S16_LE
subformat : STD
channels : 2
rate : 48000
exact rate : 48000 (48000/1)
msbits : 16
buffer_size : 256
period_size : 64
period_time : 1333
tstamp_mode : NONE
period_step : 1
avail_min : 64
period_event : 0
start_threshold : 256
stop_threshold : 256
silence_threshold: 0
silence_size : 0
boundary : 4611686018427387904
appl_ptr : 0
hw_ptr : 0
--
You received this bug notification because you are a member of Desktop
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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