So on ubuntu precise I have spent a ton of time playing with my
pulseaudio settings and system. I have the skips down to about one
every ten minutes or so, and humorously while I was typing this
sentence.
I have tsched=0 but in regards to Raymond, my
default-fragment-size-msec = 4
default-fragments = 8
and my flash videos in chrome play great. My mind is weak in the
morning before coffee, but I remember that chrome was requesting buffers
of size on the order of 64 - 100 ms , somewhere in there. I might be
incorrect, but I believe I needed my pulse settings to be LESS than
that. So 4 * 8 is 32 ms. Also, you can check ( with pacmd list-sinks
) that with tsched=1, I noticed that the "current latency" starts at
like 2 ms, and as it skips, gets larger, mine would get to around 32 -
64 ms .
in /etc/modules i have
options snd_hda_intel bdl_pos_adj=32 power_save=0 power_save_controller=N
model=6stack-dig
but you'll have to figure out your model if you use that param
here is some of my pulse settings for you to try
cat /etc/pulse/daemon.conf | grep -v -e "^;" -e "^#" | sed '/^$/d'
allow-module-loading = yes
allow-exit = yes
high-priority = yes
nice-level = -20
realtime-scheduling = yes
realtime-priority = 99
exit-idle-time = 1
scache-idle-time = 1
log-target = auto
log-level = error
resample-method = speex-float-8
enable-remixing = yes
flat-volumes = no
rlimit-nofile = -1
rlimit-nice = -1
rlimit-rtprio = -1
rlimit-rttime = -1
default-sample-rate = 44100
default-sample-channels = 2
default-channel-map = front-left,front-right
default-fragments = 8
default-fragment-size-msec = 4
and here is some more output
pacmd list-sinks
* index: 0
name: <alsa_output.pci-0000_00_1b.0.analog-stereo>
driver: <module-alsa-card.c>
flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY
state: RUNNING
suspend cause:
priority: 9959
volume: 0: 100% 1: 100%
0: 0.00 dB 1: 0.00 dB
balance 0.00
base volume: 93%
-2.00 dB
volume steps: 65537
muted: no
current latency: 31.85 ms
max request: 5 KiB
max rewind: 5 KiB
monitor source: 0
sample spec: s16le 2ch 44100Hz
channel map: front-left,front-right
Stereo
used by: 1
linked by: 1
fixed latency: 31.93 ms
card: 0 <alsa_card.pci-0000_00_1b.0>
module: 4
properties:
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "ALC889 Analog"
alsa.id = "ALC889 Analog"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "0"
alsa.card = "0"
alsa.card_name = "HDA Intel"
alsa.long_card_name = "HDA Intel at 0xf3120000 irq 50"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:00:1b.0"
sysfs.path = "/devices/pci0000:00/0000:00:1b.0/sound/card0"
device.bus = "pci"
device.vendor.id = "8086"
device.vendor.name = "Intel Corporation"
device.product.name = "5 Series/3400 Series Chipset High
Definition Audio"
device.form_factor = "internal"
device.string = "front:0"
device.buffering.buffer_size = "5632"
device.buffering.fragment_size = "704"
device.access_mode = "mmap"
device.profile.name = "analog-stereo"
device.profile.description = "Analog Stereo"
device.description = "Built-in Audio Analog Stereo"
alsa.mixer_name = "Realtek ALC889"
alsa.components = "HDA:10ec0889,80860032,00100004"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
ports:
analog-output: Analog Output (priority 9900, available: unknown)
properties:
active port: <analog-output>
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https://bugs.launchpad.net/bugs/996906
Title:
periodic audio skips with Intel HDA
Status in PulseAudio sound server:
Confirmed
Status in “pulseaudio” package in Ubuntu:
Confirmed
Bug description:
When running PulseAudio, if I'm playing music via any source (Exaile, Totem,
Flash in Firefox or Chromium, VLC, etc.) every few minutes the audio will skip
once or twice. top doesn't show any process eating CPU any more when it
happens. dmesg doesn't show anything. Nothing else seems to be affected. It
doesn't seem to happen regularly.
I just installed Ubuntu 12.04 from scratch (with pulseaudio 1:1.1-0ubuntu15),
but the same thing happened in 10.04 on the same hardware. Uninstalling the
PulseAudio packages and going back to ALSA gives me no issues whatsoever,
which
is how I know the issue is with PulseAudio. I'm using my onboard audio
device:
$ lspci | grep Audio
00:14.2 Audio device: Advanced Micro Devices [AMD] nee ATI SBx00 Azalia (Intel
HDA)
Following mailing list instructions, pulseaudio -vvvv --log-time shows during
a
skip:
( 684.030| 5.000) I: [alsa-sink] alsa-sink.c: Underrun!
( 684.030| 0.000) I: [alsa-sink] alsa-sink.c: Increasing minimal latency to
26.00 ms
( 684.030| 0.000) D: [alsa-sink] alsa-sink.c: Latency set to 26.00ms
( 684.030| 0.000) D: [alsa-sink] alsa-sink.c: hwbuf_unused=60952
( 684.030| 0.000) D: [alsa-sink] alsa-sink.c: setting avail_min=15944
( 684.030| 0.000) D: [alsa-sink] alsa-sink.c: Latency set to 26.00ms
( 684.030| 0.000) D: [alsa-sink] alsa-sink.c: hwbuf_unused=60952
( 684.030| 0.000) D: [alsa-sink] alsa-sink.c: setting avail_min=15944
( 684.031| 0.000) D: [alsa-sink] protocol-native.c: Underrun on 'ALSA
Playback', 0 bytes in queue.
( 684.036| 0.004) D: [alsa-sink] protocol-native.c: Requesting rewind due to
end of underrun.
( 684.036| 0.000) D: [alsa-sink] alsa-sink.c: Requested to rewind 10940
bytes.
( 684.036| 0.000) D: [alsa-sink] alsa-sink.c: Limited to 3320 bytes.
( 684.036| 0.000) D: [alsa-sink] alsa-sink.c: before: 830
( 684.036| 0.000) D: [alsa-sink] alsa-sink.c: after: 830
( 684.036| 0.000) D: [alsa-sink] alsa-sink.c: Rewound 3320 bytes.
( 684.036| 0.000) D: [alsa-sink] sink.c: Processing rewind...
( 684.036| 0.000) D: [alsa-sink] sink.c: latency = 1337
( 684.036| 0.000) D: [alsa-sink] sink-input.c: Have to rewind 3320 bytes on
render memblockq.
( 684.036| 0.000) D: [alsa-sink] source.c: Processing rewind...
( 696.234| 12.197) I: [alsa-sink] alsa-sink.c: Underrun!
( 696.234| 0.000) I: [alsa-sink] alsa-sink.c: Increasing wakeup watermark to
15.99 ms
( 702.033| 5.799) I: [alsa-sink] alsa-sink.c: Underrun!
( 702.033| 0.000) I: [alsa-sink] alsa-sink.c: Increasing minimal latency to
36.00 ms
( 702.033| 0.000) D: [alsa-sink] alsa-sink.c: Latency set to 36.00ms
( 702.033| 0.000) D: [alsa-sink] alsa-sink.c: hwbuf_unused=59188
( 702.033| 0.000) D: [alsa-sink] alsa-sink.c: setting avail_min=15680
( 702.033| 0.000) D: [alsa-sink] alsa-sink.c: Latency set to 36.00ms
( 702.034| 0.000) D: [alsa-sink] alsa-sink.c: hwbuf_unused=59188
( 702.034| 0.000) D: [alsa-sink] alsa-sink.c: setting avail_min=15680
( 702.034| 0.000) D: [alsa-sink] protocol-native.c: Underrun on 'ALSA
Playback', 0 bytes in queue.
...and it goes on.
The "Underrun!" messages alone happened a few times before, but it
didn't skip.
I'd like to use PulseAudio, but it's pretty annoying having audio skip all the
time.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: pulseaudio 1:1.1-0ubuntu15
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic x86_64
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: toxite 2136 F.... pulseaudio
/dev/snd/pcmC0D0p: toxite 2136 F...m pulseaudio
Card0.Amixer.info:
Card hw:0 'SB'/'HDA ATI SB at 0xfe024000 irq 16'
Mixer name : 'Realtek ALC889'
Components : 'HDA:10ec0889,1458a102,00100004'
Controls : 48
Simple ctrls : 22
Date: Tue May 8 21:45:17 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120425)
ProcEnviron:
TERM=xterm
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: pulseaudio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/03/2009
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F2
dmi.board.name: GA-790FXTA-UD5
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias:
dmi:bvnAwardSoftwareInternational,Inc.:bvrF2:bd12/03/2009:svnGigabyteTechnologyCo.,Ltd.:pnGA-790FXTA-UD5:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-790FXTA-UD5:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: GA-790FXTA-UD5
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
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