Ubuntu Lucid / PulseAudio Alsa-Plugin : 2 sec delay
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
pulseaudio (Ubuntu) |
Expired
|
Undecided
|
Unassigned |
Bug Description
Binary package hint: pulseaudio
I installed a fresh Ubuntu Lucid, and updated from Lucid-proposed.
Kernel is 2.6.32-22-generic. Did not installed anything particular.
Didn't add any fancy repo or ppa...
I'm using xdtv to watch tv, and a descrambler based on alsa.
Works nice in Karmic and Jaunty. No noticable latency...
But in Lucid I get a 2 sec delay between audio and video.
with pulseaudio in verbose mode, I notice very few differences
between Lucid and Karmic, when I launch the tv program:
The main difference is the order in which "source alsa_input"
and "Sink alsa_output" are processed. And there's a 2000 ms
latency request here that seems to be my problem.
I tried many things from related bugs-reports I found around here
starting with checking openal1 from proposed, re-compiling alsa from source,
using kernel2.34, audio-dev-team ppa or ricotz ppa for newer alsa and pulseaudio
None of which succeeded...
Anyone has a clue ?
This is my first bug report on launchpad, so I'm sorry if I mispost here or mis-whatever
And sorry also for my poor english !
PS : my soundboard is an AC'97, always worked perfectly 9.10, 9.04 8.10...etc
Changed in pulseaudio (Ubuntu): | |
status: | New → Confirmed |
I don't know what kind of relevant log I could add to this report...
Here's attached, what happens in syslog when I launch xdtv and its alsa plug-in
with pulseaudio in debug mode.
lshw :
capabilities: bus_master cap_list
configuration: driver=Intel ICH latency=32 maxlatency=11 mingnt=52 dc00(size= 256) ioport: d800(size= 128)
*-multimedia:0
description: Multimedia audio controller
product: AC'97 Sound Controller
vendor: Silicon Integrated Systems [SiS]
physical id: 2.7
bus info: pci@0000:00:02.7
version: a0
width: 32 bits
clock: 33MHz
resources: irq:18 ioport:
lsmod : lib,snd_ seq_midi oss,snd_ seq_midi dummy,snd_ seq_oss, snd_seq_ midi,snd_ seq_midi_ event audio,snd_ intel8x0, snd_ac97_ codec,snd_ bt87x,snd_ pcm_oss dummy,snd_ seq_oss, snd_seq_ midi,snd_ rawmidi, snd_seq audio,snd_ intel8x0, snd_hwdep, snd_usb_ lib,snd_ ac97_codec, snd_seq_ dummy,snd_ seq_oss, snd_seq_ midi,snd_ rawmidi, snd_bt87x, snd_pcm_ oss,snd_ mixer_oss, snd_seq, snd_pcm, snd_seq_ device, snd_timer snd_bt87x, snd_pcm
snd_usb_audio 75826 2
snd_intel8x0 25499 3
snd_hwdep 5604 1 snd_usb_audio
snd_usb_lib 16066 1 snd_usb_audio
snd_ac97_codec 100687 1 snd_intel8x0
ac97_bus 1002 1 snd_ac97_codec
snd_seq_dummy 1434 0
snd_seq_oss 27210 0
snd_seq_midi 4557 0
snd_rawmidi 19077 2 snd_usb_
snd_bt87x 9602 2
snd_pcm_oss 34571 0
snd_seq_midi_event 6003 2 snd_seq_
snd_mixer_oss 13865 1 snd_pcm_oss
snd_seq 47562 6 snd_seq_
snd_pcm 70947 5 snd_usb_
snd_seq_device 5988 5 snd_seq_
snd_timer 18656 2 snd_seq,snd_pcm
snd 55491 30 snd_usb_
snd_page_alloc 7076 3 snd_intel8x0,
soundcore 6620 1 snd