** Changed in: pulseaudio
Status: Confirmed => Unknown
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Title:
periodic audio skips with Intel HDA
Status in
I have the same problem : sound stops after undeterministic time: from several
minutes to more than 12 hours. I'm on a raspberry pi (wheezy raspbian). I tried
many combinations of parameters for daemon .conf and default.pa.
I notice that whenever i change the parameters , most of the time the
Let me add that i'm using the RPi as a thin client with x2go and that
the LAN connexion between the RPi and my PC (Unix Mageia) is on PLC. I
did not configure x2go to transmit the sound. It's only pulseaudio that
does the job (using RTP).
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i meant pacmd list -sinks and not pacmd alsa-sinks in my post number 37
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Title:
periodic audio skips with Intel HDA
Status in
What is even more puzzling is why i can still have sound for hours with
periodic underrun messages and many:
checking for dead streams
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New sound card, same issue. Asus Xonar DX. Shows up in lspci like
'C-Media Electronics Inc CMI8788 [Oxygen HD Audio]'. Uses the
snd_virtuoso driver. The snd_hda_intel module isn't even loaded. The
skips have slightly changed character with the new card, but they still
happen. And still, when
I finally upgraded to 14.04; same exact issue.
One coincidence I noticed and am looking into is that I didn't notice
any stuttering when only 64 bit code was running, but when flash or
steam were running (both of which run some 32 bit code, if I'm not
mistaken), the stuttering began immediately.
ANY reason to set latency to 1ms interval when you are using 44100Hz
since 1ms contain 44.1 samples ?
you need at least 10 ms interval
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After upgrading to 14.04 pulseaudio is basically stable for me (same
hardware). Although sometimes, after a reboot it isn't: pulseaudio
starts stuttering, and I need to move the mouse to get playing to
continue. But after power-down and restart the issue is fixed, and the
stuttering is over. There
Here's my current incantation which seems to work for me:
1. In /etc/modprobe.d/alsa-base.conf have a line:
options snd-hda-intel enable_msi=0
2. In /etc/pulse/default.pa I have:
.ifexists module-udev-detect.so
load-module module-udev-detect tsched=0
.else
### Use the static hardware
After upgrading to 13.04 I've not been able to reproduce this issue.
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Title:
periodic audio skips with Intel HDA
Status in
I have the exact same problem, but only when using my bluetooth
headsett. Using the headset with cable removes the problem entirely.
ubuntu 12.10.
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Also, how come this bug is half a year old and it has not even been
assigned to any of the ubuntu developers yet?
Roughly,
1) There are not enough Ubuntu developers to deal with all bugs.
2) There can be many root causes to why an underrun happens. I e, there
might be ten different reasons
Same problem, both under 12.04 and 12.10 (12.04 used to be worse). Using
Audio device: Intel Corporation 82801JI (ICH10 Family) HD Audio
Controller, the problem seems to occur only with the combination of an
Intel HDA sound card AND pulseaudio. Using a different card works,
turning off pulseaudio
at 44100hz 1ms contain 44.1 samples this mean latency must set at interval of
10 ms
at 48000hz 1ms contain 48 samples
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Title:
Raymond: I do not understand your comment, are you suggesting a
solution?
Also, how come this bug is half a year old and it has not even been
assigned to any of the ubuntu developers yet? This is pretty major
seeing how many people using Intel HDA nowadays, and I'm pretty sure it
affects EVERYONE
I can confirm this is not a bug with pulseaudio. When I route the audio
to my wireless audio card, no stutters at all. It's purely related to
the intel hda driver.
Here my two audio cards:
# aplay -l
List of PLAYBACK Hardware Devices
Home directory /home/berend not ours.
card 0: Intel
Doesn't happen in earlier versions of ubuntu that don't use pulse...
On Thu, Nov 15, 2012 at 3:27 PM, berend ber...@pobox.com wrote:
I can confirm this is not a bug with pulseaudio. When I route the audio
to my wireless audio card, no stutters at all. It's purely related to
the intel hda
And I'll reiterate that when I simply uninstall pulse, but use the same
hardware with alsa, the audio doesn't skip. I don't think it's accurate
to say it's purely the hda driver.
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I'm experiencing the same behavior as berend in post #22. My Bluetooth
headphones work great, but the HDA Intel device in my Lenovo ThinkPad
T420 gives me fits. My solution for right now is to use an external USB
audio device or Bluetooth headphones to work around the problem.
It's interesting
I've tried all of the alsa and pulse config changes as mentioned in this
thread with no luck. I experienced the same issue with 12.04.
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I'm still in 12.04 with this soundcard:
# lspci | grep Audio
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio
Controller (rev 03)
Bit from /var/log/syslog:
Nov 10 10:20:08 quadrio pulseaudio[19484]: [alsa-sink] alsa-sink.c: setting
avail_min=11711
Nov 10 10:20:08 quadrio
I'm also on 12.10 and am experiencing this every couple minutes with:
00:1b.0 Audio device: Intel Corporation 82801JI (ICH10 Family) HD Audio
Controller
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I am on 12.10 with
dan@greyskull:~$ lspci|grep Audio
00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family
High Definition Audio Controller (rev 04)
i have periodic skips aswell.
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but at 44100Hz the latency is no exactly 8 ms * 4 = 32ms
how do pa get these values 31.85ms and 31.93ms ?
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
Results: using options snd-hda-intel position_fix=1 in /etc/modprobe.d
/alsa-base.conf didn't make the problem go away. Using position_fix=2
made the problem actively worse: the audio literally didn't do anything
but skip. Using load-module module-udev-detect tsched=0 in
/etc/pulse/default.pa
Regarding latency, when default-fragment-size-msec was 1, I
noticed a line saying
( 124.922| 0.000) D: [alsa-sink] sink.c: latency = 1339
the buffer size of hda in ubuntu 12.04 seem reduced from 4mb back to
64kb
configured latency: 20.00 ms; range is 1.00 .. 371.52 ms
card:
If it isn't the hardware position, it could be some kernel thread
blocking PulseAudio from running; you can check this using the wakeup_rt
tracer. From there I don't know; because I'm not confident with writing
patches for other subsystems.
Hrm, I think Pulseaudio should try to be a little more
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
Like I said above, mine now skips much less frequently than every 10
minutes, so I'm skeptical about tweaking any pulse configs at this
point. And since all I did to have it skip less frequently was re-
install pulseaudio and update to all the latest precise packages, it
seems like the issue is
I've been trying to reproduce this issue for the last couple weeks, and
I'm somewhat happy to say it happens much, much less frequently now.
Unfortunately, it still happens. It's now on the order of once every
few hours on average instead of once every few minutes, but much less
regularly -- only
I'm assuming the position_fix hack won't do anything, since my audio
is 100% fine under alsa.
This assumption is wrong. PulseAudio relies on hardware positions to be
accurate any time; where as if you use alsa without pulseaudio, you're
very likely only relying on hardware positions to be
Ah, ok. That means I've got even more testing to do. Thanks for your
help; I'll report back with my results.
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Title:
This problem is quite hardware specific, so it's likely more than one root
cause, but one of the first things to try would be this:
https://wiki.ubuntu.com/Audio/PositionReporting
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