[pulseaudio-tickets] [PulseAudio] #666: snd-hda-intel ALC888 crackling/popping sound

[PulseAudio]

#666: snd-hda-intel ALC888 crackling/popping sound
--------------------+-------------------------------------------------------
 Reporter:  peol    |       Owner:  lennart
     Type:  defect  |      Status:  new    
Milestone:          |   Component:  daemon 
 Keywords:          |  
--------------------+-------------------------------------------------------
 Hello there.

 For some time (spanning for a few weeks) I've been having problems with my
 sound crackling and popping in a more random than static way. I've tried
 PA 0.9.16 - 0.9.18 (which I'm currently at) along with ALSA 1.0.17 -
 1.0.21 to no avail. I'm running Ubuntu Karmic Alpha, upgraded from a
 Jaunty installation a few weeks back (I actually upgraded to see if that
 would fix my problems).

 '''uname -r'''
 {{{
 2.6.31-11-generic
 }}}

 '''lspci -vvv'''
 {{{
 00:0f.1 Audio device: nVidia Corporation MCP55 High Definition Audio (rev
 a2)
         Subsystem: ASUSTeK Computer Inc. Device 8260
         Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
 ParErr- Stepping- SERR- FastB2B- DisINTx-
         Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort-
 <TAbort- <MAbort- >SERR- <PERR- INTx-
         Latency: 0 (500ns min, 1250ns max)
         Interrupt: pin B routed to IRQ 21
         Region 0: Memory at efff0000 (32-bit, non-prefetchable) [size=16K]
         Capabilities: [44] Power Management version 2
                 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
 PME(D0-,D1-,D2-,D3hot+,D3cold+)
                 Status: D0 PME-Enable- DSel=0 DScale=0 PME-
         Capabilities: [50] Message Signalled Interrupts: Mask+ 64bit+
 Queue=0/0 Enable-
                 Address: 0000000000000000  Data: 0000
                 Masking: 00000000  Pending: 00000000
         Capabilities: [6c] HyperTransport: MSI Mapping Enable- Fixed+
         Kernel driver in use: HDA Intel
         Kernel modules: snd-hda-intel
 }}}

 I also attached a pulseaudio -vvvv output from startup of PulseAudio and a
 small snippet from weird rewinds that is occuring (driver does not allow
 pulseaudio to rewind as much as it wants to?). Could it be that the driver
 doesn't clear the buffer on the card entirely, and it fills up with "old"
 data?

 If I'm missing anything, please let me know.

-- 
Ticket URL: <http://pulseaudio.org/ticket/666>
PulseAudio <http://pulseaudio.org/>
The PulseAudio Sound Server