Bug 107516 - [sound] [snd_emu10k1] - skips, clicks and lag after a day of heavy usage
Summary: [sound] [snd_emu10k1] - skips, clicks and lag after a day of heavy usage
Status: Open
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: Unspecified
Hardware: Any Any
: Normal Affects Only Me
Assignee: freebsd-bugs (Nobody)
Depends on:
Reported: 2007-01-04 12:40 UTC by Jonathan Liu
Modified: 2018-01-03 05:13 UTC (History)
0 users

See Also:


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Description Jonathan Liu 2007-01-04 12:40:12 UTC
After a day or so of heavy usage (KDE with full effects, portupgrade
in background, playing music using XMMS with artsd in background using
virtual channels), audible skips, clicks and lag tend to occur with the
output audio.

I have also had this problem with FreeBSD 6.1.

Some information that might be useful:

hw.snd.maxautovchans: 255
hw.snd.pcm0.vchans: 1

pcm0@pci3:11:0: class=0x040100 card=0x10021102 chip=0x00041102 rev=0x04 hdr=0x00
    vendor   = 'Creative Labs'
    device   = 'SoundBlaster Audigy Audigy Audio Processor'
    class    = multimedia
    subclass = audio
emujoy0@pci3:11:1:      class=0x098000 card=0x00601102 chip=0x70031102 rev=0x04 hdr=0x00
    vendor   = 'Creative Labs'
    device   = 'EMU10K2 Audigy Gameport'
    class    = input device
fwohci1@pci3:11:2:      class=0x0c0010 card=0x00101102 chip=0x40011102 rev=0x04 hdr=0x00
    vendor   = 'Creative Labs'
    device   = 'EMU10K2 Audigy IEEE1394 Firewire Controller'
    class    = serial bus
    subclass = FireWire


A workaround is to restart the computer.

Reloading the sound card module as follows does not fix the problem:
kldunload snd_emu10k1
kldunload sound
kldload snd_emu10k1

I'm thinking it might be kernel related.
Perhaps something to do with scheduling and preemption.

This problem does not ever occur in Windows XP Professional.
How-To-Repeat: This problem is repeatable but I can't give any better instructions on
how to reproduce the problem at the moment except what was provided in
the description.
Comment 1 Remko Lodder freebsd_committer 2007-01-04 12:41:33 UTC
Responsible Changed
From-To: freebsd-bugs->freebsd-multimedia

Assign to the Multimedia team.
Comment 2 Ricardo Nabinger Sanchez 2007-01-04 16:10:42 UTC
It happens for me rarely with OGG/MP3 files with XMMS, and pausing-unpausing
seems to "refresh" the sound buffer with good data.

But when it comes to WAV files, specially short ones and/or with different
samplings (22 kHz, 11 kHz, ...) and/or word type (8/16 bits,
signed/unsigned), I can rarely get a _correct_ playback, often clicking and
truncated (near the end of file) sound, and also happens in a random fashion
(sometimes clip, others distort, others truncate, or any combination).
Anytime, by the way.

Repeatable both with emu10k1 and emu10kx (from ports) drivers, using "play"
command (audio/sox), and either with the 4 KB buffer or larger.

Relevant info:

pcib1@pci0:1:0: class=0x060400 card=0x00000080 chip=0xb1981106 rev=0x00 hdr=0x01
    vendor   = 'VIA Technologies Inc'
    device   = 'ProSavageDDR P4X600 CPU to AGP Bridge'
    class    = bridge
    subclass = PCI-PCI
pcm0@pci0:10:0: class=0x040100 card=0x80611102 chip=0x00021102 rev=0x07 hdr=0x00
    vendor   = 'Creative Labs'
    device   = 'EMU10000 Sound Blaster Live! (Also Live! 5.1) - OEM from DELL - CT4780'
    class    = multimedia
    subclass = audio
emujoy0@pci0:10:1:      class=0x098000 card=0x00201102 chip=0x70021102 rev=0x07 hdr=0x00
    vendor   = 'Creative Labs'
    device   = 'EMU10000 Game Port'
    class    = input device
isab0@pci0:17:0:        class=0x060100 card=0x80ed1043 chip=0x32271106 rev=0x00 hdr=0x00
    vendor   = 'VIA Technologies Inc'
    device   = 'VT8237 PCI-to-ISA Bridge'
    class    = bridge
    subclass = PCI-ISA

# sysctl -a | grep snd
hw.snd.report_soft_formats: 1
hw.snd.targetirqrate: 32
hw.snd.verbose: 1
hw.snd.maxautovchans: 0
hw.snd.unit: 0
hw.snd.pcm0.buffersize: 4096
hw.snd.pcm0.vchans: 0

pcm0: <Creative EMU10K1> port 0xd800-0xd81f at device 10.0 on pci0
pcm0: <SigmaTel STAC9708/11 AC97 Codec>

# vmstat -i
interrupt                          total       rate
irq1: atkbd0                      110012          1
irq6: fdc0                            10          0
irq12: psm0                      1167054         11
irq14: ata0                       882550          8
irq15: ata1                           18          0
irq16: nvidia0+                 14367427        136
irq21: uhci0 uhci*                208925          1
irq23: vr0                        500321          4
cpu0: timer                    210239163       1999
Total                          227475480       2163

# uname -a
FreeBSD sauron.lan.box 6.1-RELEASE FreeBSD 6.1-RELEASE #0: Sun May  7 04:32:43 UTC 2006     root@opus.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386


Ricardo Nabinger Sanchez     <rnsanchez@{gmail.com,wait4.org}>
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Comment 3 Eitan Adler freebsd_committer freebsd_triage 2017-12-31 07:59:38 UTC
For bugs matching the following criteria:

Status: In Progress Changed: (is less than) 2014-06-01

Reset to default assignee and clear in-progress tags.

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