Public bug reported:
The audio system has a regression since previous releases in Karmic 9.10
beta.
Whenever a sound is played, there is a full volume pop. I suspect this
has to do with new systems that put the sound card to sleep. The first
pop happens during boot in the splash screen. Then every sound event
triggers another pop.
This is on an HP dv2610us laptop. I am not using, and have never needed
any special sound flags from the boot prompt.The sound card is reported
as "Nvidia HDA" from alsamixer. Lspci reports the following information.
00:07.0 Audio device: nVidia Corporation MCP67 High Definition Audio (rev a1)
Subsystem: Hewlett-Packard Company Device 30d6
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 19
Memory at fc480000 (32-bit, non-prefetchable) [size=16K]
Capabilities: [44] Power Management version 2
Capabilities: [50] Message Signalled Interrupts: Mask+ 64bit+ Queue=0/0
Enable-
Capabilities: [6c] HyperTransport: MSI Mapping Enable- Fixed+
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-intel
ProblemType: Bug
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: NVidia [HDA NVidia], device 0: CONEXANT Analog [CONEXANT Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: pete 1817 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'NVidia'/'HDA NVidia at 0xfc480000 irq 19'
Mixer name : 'Conexant CX20549 (Venice)'
Components : 'HDA:14f15045,103c30d6,00100100'
Controls : 18
Simple ctrls : 8
Date: Mon Oct 19 21:25:35 2009
DistroRelease: Ubuntu 9.10
NonfreeKernelModules: nvidia
Package: alsa-base 1.0.20+dfsg-1ubuntu5
PackageArchitecture: all
ProcEnviron:
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: alsa-driver
Uname: Linux 2.6.31-14-generic x86_64
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug
--
Pop from audio on every sound
https://bugs.launchpad.net/bugs/456022
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