[pulseaudio-discuss] cracks and pops with intelHDA

[Ritesh Kumar]

On Jan 2, 2008 11:21 AM, Ritesh Kumar <ritesh at cs.unc.edu> wrote:

> Hi Guys,
>      Happy New Year!
>
> I was wondering if anybody was experiencing random cracks and pops (loud
> ones actually :( ) while using pulseaudio with intelHDA? I have the
> following configuration for my inbuilt intelHDA card and will be thankful if
> somebody helped me out here. I haven't observed cracks and pops on my other
> card (Griffin iMic). I am using pulseaudio 0.9.8 which is able to acquire
> realtime scheduling priority and a nice level of -11.
>
> ALSA (asound.conf):
> pcm.!default {
>         type pulse
> }
> ctl.!default {
>         type pulse
> }
> pcm.intelHDA {
>         type softvol
>         slave.pcm "hw:0,0"
>         control.name "Master"
>         control.card 0
> }
> ctl.intelHDA {
>         type hw
>         card 0
> }
> pcm.iMic {
>         type hw
>         card 1
> }
> #ctl.iMic {
> #       type hw
> #       card 1
> #}
>
>
> default.pa:
> load-module module-alsa-sink device=intelHDA sink_name=Spkr rate=192000
> load-module module-alsa-sink device=iMic sink_name=HeadPh rate=48000
> load-module module-native-protocol-unix
> load-module module-rescue-streams
> load-module module-suspend-on-idle
> set-default-sink Spkr
>
> output of pulseaudio -vvC
> I: main.c: We're in the group 'realtime', allowing real-time and
> high-priority scheduling.
> I: core-util.c: Successfully gained nice level -11.
> I: main.c: Successfully increased RLIMIT_RTPRIO, giving up CAP_NICE.
> W: main.c: setrlimit(RLIMIT_NICE, (31, 31)) failed: Operation not
> permitted
> I: main.c: Page size is 4096 bytes
> I: main.c: Fresh high-resolution timers available! Bon appetit!
> I: module-alsa-sink.c: Successfully opened device intelHDA.
> I: module-alsa-sink.c: Successfully enabled mmap() mode.
> I: alsa-util.c: Successfully attached to mixer 'intelHDA'
> I: alsa-util.c: Using mixer control "Master".
> I: sink.c: Created sink 0 "Spkr" with sample spec "s16le 2ch 192000Hz"
> I: source.c: Created source 0 "Spkr.monitor" with sample spec "s16le 2ch
> 192000Hz"
> I: module-alsa-sink.c: Using 3 fragments of size 19200 bytes.
> I: alsa-util.c: All 2 channels can be mapped to mixer channels. Using
> hardware volume control.
> D: module-alsa-sink.c: Thread starting up
> I: core-util.c : Successfully enabled SCHED_FIFO scheduling for thread,
> with priority 5.
> D: rtpoll.c: Acquired POSIX realtime signal SIGRTMIN+29
> I: module-alsa-sink.c: Starting playback.
> I: module.c: Loaded "module-alsa-sink" (index: #0; argument:
> "device=intelHDA sink_name=Spkr rate=192000").
> I: module-alsa-sink.c: Successfully opened device iMic.
> I: module-alsa-sink.c: Successfully enabled mmap() mode.
> ALSA lib control.c:909:(snd_ctl_open_noupdate) Invalid CTL iMic
> I: alsa-util.c: Unable to attach to mixer iMic: No such file or directory
> I: alsa-util.c: Unable to attach to mixer hw:(null): No such device
> I: sink.c: Created sink 1 "HeadPh" with sample spec "s16le 2ch 48000Hz"
> I: source.c: Created source 1 "HeadPh.monitor " with sample spec "s16le
> 2ch 48000Hz"
> I: module-alsa-sink.c: Using 4 fragments of size 4796 bytes.
> D: module-alsa-sink.c: Thread starting up
> I: core-util.c: Successfully enabled SCHED_FIFO scheduling for thread,
> with priority 5.
> D: rtpoll.c: Acquired POSIX realtime signal SIGRTMIN+28
> I: module-alsa-sink.c: Starting playback.
> I: module.c: Loaded "module-alsa-sink" (index: #1; argument: "device=iMic
> sink_name=HeadPh rate=48000").
> I: protocol-native.c: loading cookie from disk.
> I: module.c: Loaded "module-native-protocol-unix" (index: #2; argument:
> "").
> I: module.c: Loaded "module-rescue-streams" (index: #3; argument: "").
> D: module-suspend-on-idle.c : Sink Spkr becomes idle.
> D: module-suspend-on-idle.c: Sink HeadPh becomes idle.
> D: module-suspend-on-idle.c: Source Spkr.monitor becomes idle.
> D: module-suspend-on-idle.c: Source HeadPh.monitor becomes idle.
> I: module.c: Loaded "module-suspend-on-idle" (index: #4; argument: "").
> I: client.c: Created 0 "STDIN/STDOUT client"
> I: module.c: Loaded "module-cli" (index: #5; argument: "exit_on_eof=1").
> I: main.c: Daemon startup complete.
> Welcome to PulseAudio! Use "help" for usage information.
> >>> I: module-suspend-on-idle.c: Sink Spkr idle for too long, suspending
> ...
> I: module-alsa-sink.c : Device suspended...
> I: module-suspend-on-idle.c: Source HeadPh.monitor idle for too long,
> suspending ...
> I: module-suspend-on-idle.c: Source Spkr.monitor idle for too long,
> suspending ...
> I: module-suspend-on-idle.c : Sink HeadPh idle for too long, suspending
> ...
> I: module-alsa-sink.c: Device suspended...
>
> I also tried appending fragments and fragment_size options at the end of
> the intelHDA alsa sink configuration but it still reports "Using 3 fragments
> of size 19200 bytes.". I was hoping to improve buffering but it seems I am
> hitting on a bug here.
>
> I used to run dmix with my intelHDA running at rate 192000Hz without any
> problems. Plus, the cracks and pops come using both alsa-pulse and
> gst-pulse.
>
> Thanks in advance for the help.
>

I am surprised... *no one* faced this problem?

_r
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20080104/2b9008c7/attachment.htm>