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
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https://bugs.launchpad.net/pulseaudio/+bug/996906/+subscriptions
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